Page 1: Service Manual
GT-3 Series Service Manual Please read this manual before making any adjustments. GARMENT PRINTER GT-3 Series US suppo rt homepage http://www.brother-u sa.com/Garmentprinters/...
Page 2: Safety Instructions
This service manual is intended for GT-3 series; be sure to read the GT-3 Series instruction manual before this manual. Carefully read the “SAFETY INSTRUCTIONS” below and the whole of this manual to understand this product before you start maintenance.
Page 3: Environmental Requirements
If any liquid gets inside the printer, immediately turn off the power switch and disconnect the power cord. Contact Brother to arrange a service call to resolve. CAUTION Environmental requirements Use the printer in an area which is free from The ambient temperature should be within the range of 18 ...
Page 4 If the grease gets into your eyes or onto your skin, inflammation can result. Ask your Brother dealer or a qualified electrician to Furthermore, do not drink or eat the grease. They carry out any maintenance and inspection of the may cause diarrhea or vomiting.
Page 5 The following warning labels appear on the printer. Please follow the instructions on the labels at all times when using the printer. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer. Watch your fingers, or you may be injured.
Page 6 Grease Wash Liquid Waste Ink Tank (20kg) Pretreatment (5kg) Maintenance Solution Ink Cartridge Pretreatment (5kg) 0085Y GT-3 Series...
Page 7: Table Of Contents
3-1-2-3. Tube Cleaning........... 77 2-3. Levelling GT-3............ 18 3-1-3. How to go to Advanced Menu ....... 77 2-4. Setting up GT-3 Series........19 3-1-4. List of Advanced Menu ........77 2-4-1. Installing the Print Heads ....... 19 3-1-5. Description of the Advanced Menu ....78 2-5.
Page 8 6-1-11. Leveling of the Platen Top Plate....150 6-2-9. Speaker............322 6-1-12. Carriage Motor..........153 6-2-10. Power Unit ............ 323 6-1-13. Carriage Driving Parts........155 6-2-11. Surge Absorber PCB Assy ......324 6-1-14. Encoder Strip..........158 6-2-12. Control Box Assy.......... 325 GT-3 Series...
Page 9 6-2-22. FFC ............... 343 7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage ····································································346 7-1. Transporting the GT-3 Series ......346 7-2. Required Maintenance for Long-term Storage ..............350 8. Error Code List ··········································354 8-1. Interpreting the Display........354 8-2.
Page 10: About Gt-3 Series
1. About GT-3 Series 1. About GT-3 Series 1-1. Specifications 仕様 Printing method Direct-to-Garment Color Inkjet Printer Dimensions 1370 (W) ×1045 (D) × 660 (H) mm (53.9” × 41.1” × 26.0”) Machine weight Approx. 111 Kg (245 lb) Maximum print area 355.6 mm ×...
Page 11: Identifying Your Printer's Parts
1. About GT-3 Series 1-3. Identifying Your Printer’s Parts 1-3-1. Front 0043Y Name Description Platen Holds the T-shirt to be printed. Platen Sheet Prevents a T-shirt from slipping so that an image is printed on your desired position. T-shirt Tray Keeps the T-shirt parts hanging from the Platen (e.g.
Page 12: Right
1. About GT-3 Series 1-3-2. Right 0044Y Name Description Exhaust slot The outlet of the Exhaust Fan. Do not cover; Leave the space of 20 cm or more to release the exhaust air. 1-3-3. Rear 0045Y Name Description AC cord socket Inserts AC cord.
Page 13: Inside Of The
1. About GT-3 Series 1-3-4. Inside of the Front Cover Cancel any operation, restore the Platens and turn off your printer before opening the Front Cover. Lift the Front Cover with both hands until the lock is set when opening. Keep pushing the Stop Lever to release the lock and close the Front Cover with both hands.
Page 14: Upper Part Of The Maintenance Unit
1. About GT-3 Series 1-3-5. Upper part of the Maintenance Unit 0048Y Name Description Caps (Front: Color side) Cover the surface of the Print Heads and absorb ink in head cleaning. From the left black, magenta, cyan, and yellow. Caps (Back: White side) Cover the surface of the Print Heads and absorb ink in head cleaning.
Page 15: Under The Platen
1. About GT-3 Series 1-3-6. Under the Platen 0049Y Name Description Platen Fixing Lever Fixes the Platen. Tighten/Loosen this lever to install/uninstall the Platen and to adjust the Platen height. <In case [B] that you cannot rotate Platen Fix Lever (1) by hitting the Platen (3)>...
Page 16: Control Panel
1. About GT-3 Series 1-3-7. Control Panel 0050Y Name Description Error Lamp OFF: no errors ON: one or more errors have been detected. See "8. Error Code List". Power Lamp ON: shows the power is ON. Head Cleaning Cleans all the Print Heads with normal cleaning. (The number of cleaning Button depends on the model).
Page 17: Display
1. About GT-3 Series 1-3-7-1. Display The following image indicates that GT-3 has received a print data and ready to print. The Display indicates Job, printer status and the information needed for printing operations. 01e0026Y Item Shown Description Shows the indentified name of the print data, which is automatically set by Job Name Printer Driver.
Page 18: Menu List
1. About GT-3 Series 1-3-7-2. Menu List Push either one of the OK Button, Up Button, Down Button and Back Button to go into the Menu. Menu Content Executes Head Cleaning of either one by one or of all four Print Heads.
Page 19 1. About GT-3 Series Menu Content Goes into the Printer Setting. LCD Contrast: Adjusts the Display contrast. See "3-4-1. Adjusting the Display Contrast" in the Instruction Manual. Speaker Volume: Adjusts the speaker volume. See "3-4-2. Adjusting the Speaker Volume" in the Instruction Manual.
Page 20: Setting Up Gt-3 Series
0051Y Locate your printer taking the following into account The printer in installed in environmentally-acceptable conditions. (Refer to “1. About GT-3 Series”.) Avoid exposure to direct sunlight, dust, extremes of humidity. (Using the humidifier in dry conditions is strongly recommended for print quality).
Page 21: Required Tools
2. Setting up GT-3 Series 2-1-2. Required Tools Prepare the following tools.  Phillips screwdriver: M3 to M5  Socket Wrench or Ring spanner: 8 mm  Wrench: 17 mm  Spirit Level  Anti-static Wrist Band 2-1-3. Other Requirements Prepare the devices and tools that meet the following requirements.
Page 22: Consumable Requirements And Options
2. Setting up GT-3 Series 2-1-4. Consumable Requirements and Options Make the customers use the following Brother genuine items. Consumables Parts Code Maintenance/Replacement parts Parts Code Black Ink Cartridge 180 cc GC-30K18 Print Head SB3184 380 cc GC-30K38 Wiper Cleaner...
Page 23: Unpacking
2. Setting up GT-3 Series 2-2. Unpacking 2-2-1. Unpacking Procedure Unpack the printer by following the steps 1 to 8. <Note> Do not turn ON the printer until you finish the steps "2-2-4. Removing protection material” or the printer may be damaged by unexpected motion.
Page 24: Transportation Of Gt-3
2. Setting up GT-3 Series 2-2-2. Transportation of GT-3 CAUTION The printer machine weighs approximately 111 kg (245 lb). Transporting and setting up of the printer should be held in proper way. The machine may fall down and cause injury.
Page 25: Installing Waste Ink Tank
2. Setting up GT-3 Series 2-2-3. Installing Waste Ink Tank Before turning ON the printer, be sure to fix the Waste Ink Tank (1) to the table with the two straps, etc. After fixing it with the straps, insert the Waste Ink Tube (2) into the Waste Ink Tank (1).
Page 26 2. Setting up GT-3 Series < Cushioning Removal > Remove the Cushioning (2) from the Ink Cartridge Storage Rack. 0164Y Separate the Cushioning in two pieces. 0163Y Flatten and tilt it to pull it out. 0166Y Follow the same steps for the other piece.
Page 27: Levelling Gt-3
2. Setting up GT-3 Series 2-3. Levelling GT-3 Use a spirit level to level the GT-3. Place the spirit level (1) on the Platen in the lateral direction as shown below. Loosen the four nuts (3) of the Adjusters (2) at the bottom of the Main Frame.
Page 28: Setting Up Gt-3 Series
2. Setting up GT-3 Series Place the spirit level (1) longitudinally on the Platen as shown below. Rotate the Adjusters (2) to adjust the levelness in the lateral direction by less than 1 mm/. Place the spirit level on the Platen in the lateral direction again to verify whether the printer is still level in both directions.
Page 29 2. Setting up GT-3 Series Move the Carriage to where the Print Heads can be mounted. Go to the Advanced Menu and select [Output Check]. Select the [Carriage Test] and [To Flushing Position]. The Carriage moves to the Flushing position when you push the OK Button.
Page 30 2. Setting up GT-3 Series Rotate the Lever (5) to your side that fixes the Print Head. Mount the new Print Head on the printer. Fit the V-shaped groove (1) to the Positioning Pin (2) (right) at the back of the mounting position.
Page 31 2. Setting up GT-3 Series Remove the protection film. 12. Remove the black rubber cap on the edge of the Tube, connect the Tube to the Print Head and fix the Tube by rotating the Tube Connector by 90 degrees.
Page 32 2. Setting up GT-3 Series Repeat the steps 6 to 12 and mount all the Print Heads. Color side Color FFCs should go through the right side of the Tubes. Tube FFC area (right side of the Tube) Run the FFCs through the back of the metal plate.
Page 33 2. Setting up GT-3 Series 14. Mount the Plastic Cover over the Carriage PCB. Put it on the Carriage PCB in curl (left), and make the Condenser (big black part on the Carriage PCB) go through the hole of the Plastic Cover (right).
Page 34: Preparing Your Pc
This section describes how to install the GT-3 Printer Driver (FileOutput), manuals (Basic Operation Manual/ Instruction Manual), Brother GT-3 File Viewer, and other tools. Make sure the steps because there are some different dialogs shown in Windows XP/ Vista / Windows 7 / Windows 8.
Page 35: Connection With Usb 2.0 Cable: For Windows Xp
2. Setting up GT-3 Series 2-5-3. Connection with USB 2.0 Cable: for Windows XP Connect the USB 2.0 cable to your printer (power OFF). <Note> We do not recommend connection via a USB hub to the printer. Connect the other end of the USB 2.0 Cable to your PC.
Page 36 Click "Finish" when "Completing the Found New Hardware Wizard" dialog. Open "Printers and Faxes" in "Control Panel". Click either "Brother GT-3" "Brother GT-3 FileOutput" icon and select "Set as Default Printer" on “File” menu. This will help to do the layout with your application software.
Page 37: Network Settings: For Windows Xp
2. Setting up GT-3 Series 2-5-4. Network Setting: For Windows XP 2-5-4-1. Assignment of your computer’s IP Address <Note> Jump to “2-5-4-2. Assignment of GT-3’s IP Address” if you r PC has already been assigned IP address. Select [ Network and Internet Connection] in the Control Panel.
Page 38 2. Setting up GT-3 Series Select [ Local Area Connection ]. Click the [ Properties ] Button. GT-3 Series...
Page 39 2. Setting up GT-3 Series Select [ Internet Protocol (TCP/IP) ] and click the [ Properties] Button. Assign the defined number of IP address, Subnet mask and Default gateway to your PC and click [ OK ] button. (The numbers below are examples.)
Page 40: Assignment Of Gt-3'S Ip Address
2. Setting up GT-3 Series 2-5-4-2. Assignment of GT-3’s IP Address Assign the GT-3’s IP address after you finish assigning your computer’s IP address. Turn ON the GT-3 with your PC and GT-3 are connected with USB 2.0 cable. Execute the GT-3 Maintenance and select [ IP address Assignment ].
Page 41 2. Setting up GT-3 Series IP address is successfully assigned to GT-3. The error dialog appears if some irregular numbers are assigned as IP address in the step (2), Subset mask or Default gateway. Confirm the numbers and re-enter. GT-3 Series...
Page 42: Setting On The Lan
2. Setting up GT-3 Series 2-5-4-3. GT-3 Setting on the LAN Connect your PC with GT-3 with LAN cable and turn ON the printer. Select [ Printers and Faxes ] and select [ File ] > [ Add Printer ].
Page 43 2. Setting up GT-3 Series Select the [ Local printer attached to this computer ] and click the [ Next ] Button. Select [ Create a new port] and [ Standard TCP/IP Port ] as the Type of port. Click the [ Next ] Button.
Page 44 2. Setting up GT-3 Series The Wizard starts. Click the [ Next ] Button. Input the IP address that you assigned in the Step (2) of “2-5-4-2. Assignment of GT-3’s IP Address” and click the [ Next ] Button. GT-3 Series...
Page 45 2. Setting up GT-3 Series Wait for a while and then the dialog changes to the following [ Add Standard TCP/IP Printer Port Wizard ]. Select [ Custom ] in the Device Type and click the [ Settings… ] Button.
Page 46 2. Setting up GT-3 Series [ Add Standard TCP/IP Printer Port Wizard ] is finished. Click the [ Finish ] Button. The dialog goes back to the [ Add Printer Wizard ] and the Install Printer Software starts. Click the [ Have Disk ] Button.
Page 47 Click the [ Browse… ] Button and select the [ 32bit_OS ] folder in the Installer, and then click the [ OK ] Button. (Only 32 bit OS is available for Windows XP.) Confirm that [ Brother GT-3 ] should be selected in the Printers, and click the [ Next ] Button. GT-3 Series...
Page 48 2. Setting up GT-3 Series Select [ Replace existing driver ] and click the [ Next ] Button. The dialog shows "Set as Default Printer (better to select GT-3 File Output Printer Driver as Default Printer)", “Share name: Not shared” and “Test Page: No” and click the [ Next ] Button.
Page 49: Pc Preparation: For Windows Vista / Windows 7 / Windows 8 (32 Bit / 64 Bit)
Refer first to "2-5-2. PC preparation: For Windows XP (32 bit)" and confirm the process. Install the file Output Printer Driver "Brother GT-3 FileOutput" first to your PC. Tools and manuals are installed together from Install CD, and PC must be restarted. Then PC is connected to USB 2.0 cable, the printer turned ON, and USB 2.0 cable connected to the printer.
Page 50: Connection With Usb 2.0 Cable: Windows Vista / Windows 7 / Windows 8
After installation, open "Printers" in "Control Panel" of PC. Click either "Brother GT-3" or Brother GT-3 FileOutput icon and select "Set as Default Printer" on “File” menu. This will help to do the layout with your application software. The PC setup is now completed.
Page 51: Network Settings: For Windows Vista / Windows 7 / Windows 8
2. Setting up GT-3 Series 2-5-7. Network Setting: For Windows Vista / Windows 7 / Windows 8 2-5-7-1. Assignment of your computer’s IP address <Note> Jump to “2-5-7-2. Assignment of GT-3’s IP Address” if you r PC has already been assigned IP address.
Page 52 2. Setting up GT-3 Series Click the [ Properties ] Button. The following caution appears when [ User Account Control ] is ON. Select [ Continue ] Button to go next. GT-3 Series...
Page 53 2. Setting up GT-3 Series Select [ Internet Protocol Version 4 (TCP/IPv4) ] and click the [ Properties ] Button. Assign the defined number of IP address, Subnet mask and Default gateway to your PC and click [ OK ] button.
Page 54: Assignment Of Gt-3'S Ip Address
2. Setting up GT-3 Series 2-5-7-2. Assignment of GT-3’s IP Address Assign the GT-3’s IP address after you finish assigning your computer’s IP address. The following caution appears when [ User Account Control ] is ON. Select [ Allow ] Button to go next.
Page 55 2. Setting up GT-3 Series Assign the defined number of IP address, Subnet mask and Default gateway to GT-3,and click [ OK ] button. (The numbers below are examples.) IP address is successfully assigned to GT-3. The error dialog appears if some irregular numbers are assigned as IP address in the step 3, Subset mask or Default gateway.
Page 56: Setting On The Lan
2. Setting up GT-3 Series 2-5-7-3. GT-3 Setting on the LAN Connect your PC with GT-3 with LAN cable and turn ON the printer. Windows Vista: Select [ Printers ] from the [ Control Panel ]. Windows 7: Select [ Devices and Printers ] from the [ Control Panel ].
Page 57 2. Setting up GT-3 Series Select [ Create a new port ] and [ Standard TCP/IP Port ] as the Type of port. Click the [ Next ] Button. Input the IP address that you assigned in the Step (3) of “2-5-7-2. Assignment of GT-3’s IP Address”, and turn OFF the check box [ Query the printer and automatically select the driver to use ].
Page 58 2. Setting up GT-3 Series The following “Detecting TCP/IP Port” dialog appears and then it changes automatically to “Add Printer”. The message “The device is not found on the network” appears. Select [ Custom ] and click the [ Settings… ] Button.
Page 59 2. Setting up GT-3 Series Select [ LRP ] in Protocol, input [ BINARY_P1 ] in Queue Name of LPR Settings, and click the [ OK ] Button. The Wizard will soon go back to the Step 6. Click the [ Next ] Button.
Page 60 2. Setting up GT-3 Series The dialog goes back to the [ Add Printer ] and the Install Printer Software starts. Click the [ Have Disk ] Button. Click the [ Browse… ] Button and select either [ 32bit_OS ] or [ 64bit_OS ] folder in the Installer depending on your PC, and then click the [ OK ] Button.
Page 61 2. Setting up GT-3 Series Confirm that [ Brother GT-3 ] should be selected in the Printers, and click the [ Next ] Button. Select [ Replace the current driver ] and click the [ Next ] Button. The dialog shows “Printer Name”, "Set as Default Printer (better to select GT-3 File Output Printer Driver as Default Printer)", “Share name: Not shared”.
Page 62 2. Setting up GT-3 Series The final dialog appears to show that GT-3 has successfully added to your PC. Click [ Finish ] Button to finish the Wizard. GT-3 Series...
Page 63: Troubleshooting
PC with USB cable Issue: The following may occur when you install the Brother GT-3 Printer Driver for the first time on your PC. If the installation fails, Windows 7 / Windows 8 sometimes regard GT-3 as an "Unspecified Device".
Page 64 2. Setting up GT-3 Series How to recover: Open the Control Panel and select Devices and Printers icon. Select and Right-Click on the Garment Printer (GT-3) in the “Unspecified" category and left click on Properties in the drop-down menu. GT-3 Series...
Page 65 2. Setting up GT-3 Series The following Garment Printer Properties windows will be displayed. Click the Hardware tab and select the Brother GT-3 in the "Device Functions:" list. Then left click on the Properties button on the bottom right. The following GT-3 Properties window will appear. Left click on the Change settings button on the left bottom.
Page 66 2. Setting up GT-3 Series The Garment Printer Properties window for the BrotherGT-3 Properties disappears once and then will return, possibly in a different position on your monitor. Sometimes the position of the Dialog may shift. Click the Driver tab in the redisplayed window. Then click the Update Driver button.
Page 67 2. Setting up GT-3 Series Insert the GT-3 Installation CD in your PC driver and click the Browse button. Select the folder that the printer driver is saved in, on the installation CD. Select either [ 32bit_OS ] or [ 64bit_OS ] folder depending on your OS. The following image is an example that the driver id is D: and Windows 32 bit OS.
Page 68 “Printers and Faxes" category. If that window is kept open while updating, select View and Refresh to update the contents of the written window. The Brother GT-3 Printer Driver has been successfully recognized as a printer. GT-3 Series...
Page 69: Preparation And Check Before Use
Keep the Filter Cartridges near the printer; they are necessary for the maintenance process of Tube Cleaning, Print Head replacement and the power on of the printer. (Refer to “4-1-4. Cleaning the Tubes and Print Heads”, “6-1-38. Replacing the Print Head”, “7-1. Transporting GT-3 Series / Maintenance Required for Long-term Storage”).
Page 70 Confirm the color of the ink cartridge. Loading a wrong color causes serious damage to print quality, and could damage to the Print Heads. If you have installed a wrong color, immediately contact Brother or your dealer for a service call.
Page 71: Installing Ink
2. Setting up GT-3 Series 2-6-2. Installing Ink The following procedures are the steps of installing the Ink. Mount the Print Heads first by “2-4-1. Installing the Print Heads” first. Install the Color Ink on GT-341; both Color and White on GT-381 and GT-361.The process is not identical between the Color and White.
Page 72 2. Setting up GT-3 Series Put on the Bottle on the Cover Cartridge. 0192Y Confirm that the printer is either [ Standby ] or [ Ready ]. 10. Select [ Maintenance ] > [ Initial Cleaning ] and ［ White ］from the menu and press OK Button.
Page 73 2. Setting up GT-3 Series Installing the Color Ink Remove the Color Filter Cartridges. Insert the Color Ink Cartridges into the slots. Confirm the color of the Label on the Cartridge Holder and the color of the ink cartridge. Insert them in the proper slots.
Page 74: Test Print
2. Setting up GT-3 Series 2-6-3. Test Print You can identify which Print Head has the problem by using the Nozzle Check Pattern. Print it when some "white" blank lines can be seen in the print data or white is not white enough.
Page 75 2. Setting up GT-3 Series CMYK: If there is stripes (arrow 1) or line breaks (arrow 2), the Print Head of the color (in the following example: Magenta) has the problem. The Print Heads need to be cleaned (see “2-6-4. Head Cleaning”).
Page 76: Head Cleaning
2. Setting up GT-3 Series Execute Head Cleaning if you have the print as shown in the below: Several continuous nozzles are The same positions printed by the missing like a "band". multiple Print Heads are missing (W1 and W3).
Page 77: Firing Adjustment Of The Print Heads
Prepare several sheets of A4 or letter-sized white paper in executing Color Print Head adjustment. Prepare several sheets of A4 or letter-sized black paper in executing White Print Head adjustment. Prepare a PC that GT-3 Printer Driver is installed; where the GT-3 Maintenance Tool is in [Brother GT-3 Tools].
Page 78 2. Setting up GT-3 Series For [Step 2:] to [Step 3:], follow the instructions displayed on the dialog and execute a test print. The following examples are shown in Color adjustment; the same process for White adjustment. Check the print result in [ Step 4: ].
Page 79 2. Setting up GT-3 Series For [Step 5:] to [Step 6:], follow the instructions displayed on the dialog, perform a test print again, and check whether adjustment has been performed successfully. If the pattern is uniform at number 4, 5 or 6, and 1 right vertical bar is visible, adjustment will be complete for that combination of Platen and Print Head.
Page 80 2. Setting up GT-3 Series 10. At [Step 6:], select “YES” if adjustment is complete, or “NO” if incomplete. If “YES” is selected, follow the dialog instructions and then click [Next]. If “NO” is selected, click the [Re-adjust] button that appears.
Page 81: Aligning The Print Position Of White / Color Print Heads
When Firing Adjustment is complete, align the White and Color print positions. On the GT-3 Series, the White Print Heads apply a base coat and the Color Print Heads are then used to draw the design. For that reason, if the print positions of the White and Color are not perfectly aligned, the base White Ink will be printed outside the target print surface, Color Ink will be applied to material to which no White Ink has been applied, resulting in such problems as dull colors.
Page 82 2. Setting up GT-3 Series Enter the coordinates of the selected square at the [ Step 3:] dialog and click [ Next ]. For [Step 4:] to [Step 5:], follow the instructions displayed on the dialog and print the test pattern again, and check if the adjustment has been done successfully.
Page 83 2. Setting up GT-3 Series In [ Step 5:], select “YES” if adjustment is complete, or “NO” if incomplete. If “YES” is selected, follow the instructions on the dialog and then click [ Next ]. If “NO” is selected, click the [ Re-adjust ] button that appears.
Page 84: Operation
Special operation is necessary to go to the Advanced Menu. Do not release these functions to customers. 3-1-2. Supplementary description of the User Menu Refer to the Instruction Manual for each function of the User Menu. The following pages show the additional information. GT-3 Series...
Page 85: Test Print
Execute the necessary maintenance when those messages are indicated:  Replace the Wiper Cleaners to new  Clean the Caps and Wipers  Replace the Flushing Felt and Flushing Sponge to new  Replace the Fan Filter to new  Replace the Carriage Felts to new GT-3 Series...
Page 86: Tube Cleaning
Print the Solid Patterns to confirm the clogging of Print Head. 7 Log Level No operation necessary Measures the suction of the pump in the Maintenance Unit. Check the 8 Pump Pressure function of the Maintenance Unit if the Waste Ink Tubes should leak or be clogged. GT-3 Series...
Page 87: Description Of The Advanced Menu
This operation is to make the Carriage free and confirm the position of the Encoder Sensor. Indicates the status ON/OFF of Wiper Origin Sensor, Cap Origin Maintenance Unit Sensor, Pump Rotation Sensor, Wiper Cleaner SW of White/Color. GT-3 Series...
Page 88: Temperature Adjustment
This menu is to confirm the issues. Use it as-is: “Standard Information”. When you are requested by the manufacturer, select “Detailed Information”, which can record in a very short period of time. Set the menu to “Standard Information” soon after the necessary log data is exported. GT-3 Series...
Page 89: Pump Pressure
Tube (φ2mm) of 60 cm long (3) and the Bottle with Maintenance Solution (4). The Joint (2) is not used for GT-3 Series; Male Luer Slip to 2 00 Series Barb, 1/16 “(1.5 mm) ID Tubing MTLS210-6 made by VALUE PLASTICS, INC.
Page 90 => The Waste Ink Tubes may be clogged if the current weight is decreased by less than 30g from the original. Or the Tube Pump may not work properly. Confirm the inside of the Maintenance Unit and modify the parts (cleaning, exchanging parts). GT-3 Series...
Page 91: Firmware Update
FIRMWARE WHILE UPDATING. If the power is off while updating, go to the step “3-2-3” in the next page and follow the steps. The firmware is updated successfully when you see the message below in the Display. Remove the USB Flash Drive and turn OFF and ON the printer. GT-3 Series...
Page 92: Countermeasure For Cancelled Update
6. The update is finished when the message is shown on the Display properly. Turn OFF the printer. 7. Remove the USB Flash Drive from the printer and then turn ON the printer again. Confirm the version. GT-3 Series...
Page 93: Upgrade In Flash Rom Writing Error
After the printer is successfully initialized, remove the USB flash drive and turn OFF, and then turn ON the printer again. The firmware in the printer is still the old version. Upgrade the firmware in the normal way, eiher from PC or from USB flash drive to the current version. GT-3 Series...
Page 94: Service Tool
Ensure that the PC is connected directly to GT-3 with a USB cable. <Note> This adjustment is not possible if connected via a USB print server. Turn ON the printer. <Note> Always complete the printer driver installation once it has been started. GT-3 Series...
Page 95: Demonstration Mode
Before acquiring logs from the customer’s GT-3, explain to customers and make sure they understand that “log files are used only to analyze trouble and gain an understanding of the operating status, and are not to be used for purposes other than these”. GT-3 Series...
Page 96: Getting Log File
You do not have to install GT-3 Printer Driver in your PC or the actual printer if you just view the Log File. Execute the GT-3 Service Tool and select [View Log and Settings in Saved Log File] and click [Next]. GT-3 Series...
Page 97 Select the Buttons so you can view the log file from different viewpoint. <Note> The time recorded in the Log file is by the internal clock inside the GT-3 Series. The time may be shifted from the real operation time.
Page 98: Solving Print Quality Problems
Do not move the Platen by hand. The Printer may be seriously damaged by this. Do not put your hands inside the covers while the printer’s power is turned on, otherwise your hands may touch against moving parts and this may result in injury. GT-3 Series...
Page 99: Checking The Cause Of Misfiring
Check ink in cap just after moving in the Tube. pump and waste ink tubes. Repair！ Do Normal HC, Print Nozzle CP for several times. CR position, Waste Ink Tube and pump in Maintenance Unit, Replace Heads and Tubes. Better? Print OK GT-3 Series...
Page 100: Detailed Check Flow
・ The following problems cannot be checked by referring to these check flows: ・ PCB defects ・ Clogging in Maintenance Pump Tube, Suction Tube, or Branch Plugs ・ “FFC” in the following diagrams refers to Flat Cables and “PH” refers to Print Heads. GT-3 Series...
Page 101 Max. 12.5 cc of ink used. Print a check pattern and count the number of misfiring nozzles. All nozzles firing? Repeating "Powerful" Head cleaning 5 times does not resolve the problem. Go to Flow 3. Problem solved. (No PH replacement) GT-3 Series...
Page 102 Max. 25 cc of ink used. Print a check pattern and count the number of misfiring nozzles. Go to Flow 4. All nozzles firing? Repeating "Powerful" cleaning 5 times does not resolve the problem. Problem solved. (No PH replacement) GT-3 Series...
Page 103 The Print Head Nozzle is clogged, or there is an electrical problem with the Print Head. Problem solved. All nozzles firing? (No PH replacement) Repeating "Powerful" cleaning 10 times does not resolve the problem. Problem solved. (No PH replacement) GT-3 Series...
Page 104 Max. 12.5 cc of ink used. Print a check pattern and count the number of misfiring nozzles. All nozzles firing? Repeating "Powerful" cleaning 5 times does not resolve the Go to Flow 3. problem. Problem solved. (No PH replacement) GT-3 Series...
Page 105 Print a check pattern and count the number of misfiring nozzles. Connect PH and Tube Pump Tube. All nozzles Go to Flow 3. firing? Repeating "Powerful" Head cleaning 5 times does not resolve the problem. Problem solved. (No PH replacement) GT-3 Series...
Page 106 Tubes and Joints? Wait 10 minutes to remove air. Execute “Powerful” cleaning and print Nozzle CP Up to 10 times, Max. 25 cc of ink used Problem solved. All nozzles (No PH replacement) firing? Replace the Print Head. GT-3 Series...
Page 107: Heavy Misfiring In Printing (Checking Cracks Inside The Tube)
“Solid_Y (yellow)”, or “Solid_W* (white, *: 1 to 4)”. By pressing the OK button, the solid print pattern is loaded and “Ready” appears on the display. (The example shown below is for a black pattern.) Example: Solid K (Black pattern) GT-3 Series...
Page 108 Print Nozzle Check Pattern (Refer to “2-6-3. Test Print”) and confirm the print quality of the Print Head. Print the A3-sized solid print pattern (Solid K. Solid M, Solid C, Solid Y or Solid W*) again. The troubleshooting is done successfully when no banding occurs. GT-3 Series...
Page 109: Faded Print By Dryness (Changing The Wipe Frequency)
Decrease the Flushing Interval (=increase the number of Flushing) with [Flushing Interval] menu when the print quality is not good while printing. On the other hand, increase the Flushing Volume with [Flushing Volume] menu when the print quality is not good at the beginning of the print. GT-3 Series...
Page 110: Cleaning The Tubes And Print Heads (White/Color Tube Cleaning)
Rotate the bottle as shown in the image below by three times, to rinse the bottom, the side of the bottle with the Maintenance Solution. <Note> Do not shake the bottle; the bubbles cannot flush the surface of the bottles easily. Just rotate the bottle slowly to rinse the inside. 4726M GT-3 Series...
Page 111 Select [ Maintenance ] > [ White Tube Cleaning ] from the menu and press OK Button. Select [ All Whites ] then White Ink retrieval starts and the countdown is indicated on the Display. Please wait until the retrieval finishes (4 minutes). GT-3 Series...
Page 112 10. With the peep sounds, the message [ Insert Maintenance Cartridge ] is indicated on the Control Panel. Remove the Filter Cartridge of the W1 and insert the Maintenance Cartridge again and press the OK button. Make sure that the tube from the Maintenance Cartridge can reach the bottom of the bottle with Maintenance Solution. GT-3 Series...
Page 113 After refilling the Maintenance Solution, the message of selecting Print Head menu is indicated. Remove the Maintenance Cartridge from W1 slot and insert well-shaken White Ink Cartridge. Tube Cleaning W1 is finished successfully. Repeat the steps 5 and 7 (this step) to clean other Tubes. GT-3 Series...
Page 114 When you load the Color Ink again, replace the Color Maintenance Cartridge to the Color Filter Cartridge, select [ Maintenance ] > [ Color Tube Cleaning ] to remove the Maintenance Solution from the Tube. Then load the Color ink by referring to “2-6-2. Installing Ink”. GT-3 Series...
Page 115: Regular Maintenance
CAUTION Setting up and moving of the printer should only be carried out by a qualified technician. Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system. Turn off the power switch and disconnect the power cord before carrying out the following operations.
Page 116 If the grease gets into your eyes or onto your skin, inflammation can result. Furthermore, do not drink or eat the grease. They may cause diarrhea or vomiting. Keep the grease out of the reach of children. GT-3 Series...
Page 117: Cleaning
Use only the Wash Liquid included to wet the Clean Stick; using other liquid will cause damage to the Print Heads. Use the one side of wet Clean Stick to clean the front side of the Wiper Blade. GT-3 Series...
Page 118 The Warning “Exchange Maintenance Parts” is indicated by counting the number of Head Cleaning.  Nozzle may be dried by being left uncapped. Execute Normal Head Cleaning for all Print Heads and confirm the print quality with printing Nozzle Check Pattern after cleaning. (Refer to “2-6-3. Test Print”.) GT-3 Series...
Page 119: Cleaning The Print Head Nozzles
Cleaning Kit (green grip with flat form).  Wet a Clean Applicator only with Wash Liquid; do not rub the Print Head with other liquid (e.g. water). Print Head may be seriously damaged. Fully wet with Wash Liquid GT-3 Series...
Page 120 10. Execute Powerful Cleaning 10. Execute Powerful Cleaning of all the Print Heads to remove the air bubbles in the nozzles. Print Nozzle Check Pattern to confirm the print quality. (See "2-6-3. Test Print"). Execute Head Cleaning if necessary. GT-3 Series...
Page 121: White Ink Maintenance
Cleaning. It takes time but you can save the cost. If you select the Tube one by one then the White Ink will not be retrieved. Refer to “4-1-4. Cleaning the Tubes and Print Heads (white/Color Tube Cleaning)”. GT-3 Series...
Page 122: Cleaning The Inside Of The Printer
Move the Carriage slowly to the rightmost position by hand. <Note> Ink may stain the Platen and other places while moving the Carriage, the bottom surface may be wet and dirty with ink. Loosen the four Screws with a coin as shown below. 0072Y GT-3 Series...
Page 123 10. Put the Encoder Cleaner to the Encoder Strip so that the Encoder Strip (4) should run between the felts straightly, and the bottom part of the felt should touch the inside of the Encoder Cover. The felts catch the Encoder Strip when you release your finger. 0075Y GT-3 Series...
Page 124 18. Push the Stop Lever to release the lock when you close the Front Cover with both hands. Watch your fingers not caught in the Front Cover. Turn ON the printer. The cleaning is success when the initialization of the printer is done with no errors indicated. GT-3 Series...
Page 125: Replacing Parts
CAUTION Setting up and moving of the printer should only be carried out by a qualified technician. Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system. Turn off the power switch and disconnect the power cord before carrying out the following operations.
Page 126: Replacing The Printer Parts
Prepare the following tools in dealing with Print Heads and PCBs.  Anti-static Wrist Band  Small mirror (to check the nozzle surface of Print Heads) Refer to the section beforehand and prepare the necessary measuring apparatus and jigs. GT-3 Series...
Page 127: Assembling/Disassembling The Covers
Remove the Link Spring L (2) and Link Spring R (3). Hold the Front Cover UF (1) with both hands and close it slowly. <Note> Without Link Springs, the Front Cover UL closes quicker than the normal condition. GT-3 Series...
Page 128 Remove the four screws (7) and dismount the Cover UB (8) by moving backward. <Note> Pay attention to the Tubes not to bend in operation. Remove the screw (9) and dismount the cover switch (10) by moving backward. Remove the two screws (11) and dismount the Front Cover UF (1). GT-3 Series...
Page 129 Open the Front Cover UF (1) slowly with your both hands. <Note> Without Link Springs, you feel the Front Cover UL heavier than the normal condition. Mount the Link Spring L (2) and Link Spring R (3). 0181Y Close the Front Cover UF (1). GT-3 Series...
Page 130 6. Replacing Parts Bottom Parts of the Covers 0182Y 0183Y GT-3 Series...
Page 131 Pass the Waste Ink Tube through the groove (C) of the Cover DB (26). Hook it 0185Y Hook the holes on the Cover PB (24) on the claws of the printer and fix it with the Truss screw (23). GT-3 Series...
Page 132: Assembling/Disassembling Of The Platen
Disconnect the Connector [CN4] (1) between the Main PCB and the Platen Motor. Move the Platen (3) to your side, unscrew the Clamp Lever (2) and remove the Platen (3) Remove the Screw Bind M4x6 (4), the Height Adjustment Lever (5), six Screws (6) and remove the T-shirt Tray (7). GT-3 Series...
Page 133 Unscrew the four Screws (11) and remove the Bellows Guide Plate R (12) and the Bellows Guide Plate L (13). (13) (12) (13) (12) (11) (11) Unscrew the four Screws (14) and remove the Bellows (15) and two Bellows Setting Plates (16). (16) (14) (14) (15) (16) GT-3 Series...
Page 134 Keep those three parts as shown in the step 1 and put the Bellows Guide Plate R (1) through the Bellows Support Plate (4) and set it to the position, from the back side first then the front side. Put them through (4) Setting Position Setting Position The back side The front side GT-3 Series...
Page 135 Tighten the Bellows Guide Plate R (1) and the Bellows Guide Plate L (2) with the four Screws (5). <Note> Tighten temporarily the backward screws first as the reference of positioning. Hold the Bellows (3) with the two Bellows Setting Plates (6) and tighten them with four Screws (8). GT-3 Series...
Page 136 Height Adjustment Lever, Clamp Lever, Cover DR, Cover DL, Cover PF, Cover PB and Cover DB. <Note> Make sure that the Connector is firmly connected before you put covers. (12) Adjustment of Platen Stopping Mechanism The space (13) should be within 32.8±0.5mm. 32.8±0.5 (13) GT-3 Series...
Page 137: Platen Belt And Reduction Belt
Disassembling Loosen the two Bolts Socket (S/P Washer) M4x14 (1). Loosen the Nut 2 M4 (2) and loosen the Bolt Socket (3) for adjusting the tension. Remove two Bolt Sockets (4) and remove the Bellows Support Plate (5). GT-3 Series...
Page 138 Remove the four Bolt Sockets (9) and remove the Belt Holder (10). (10) Remove the Platen Belt. <Note> Go to the page “Replacing the Reduction Belt” and follow “Disassembling” when you replace the Reduction Belt at the same time. GT-3 Series...
Page 139 Fix the Belt Setting Plate (1) to the Platen Arm (6) with the two Bolt Sockets (5). <Note> Fix the Belt Setting Plate by pushing the machined surface of the Platen Arm. Adjust the tension of the Belt. (Refer to “6-1-5. Adjusting the tension of Platen Belt and Reduction Belt”.) GT-3 Series...
Page 140 Loosen the four Bolt Sockets (1). Loosen the Nut 2 M4 (2) and loosen the Bolt Socket (3) for adjusting the tension. Remove the two Ball Bearings Radial 688ZZ and the two Retaining Rings E6. Prepare the new Retaining Rings, no reuse. GT-3 Series...
Page 141 Assemble the two Ball Bearings Radial 688ZZ and the two new Retaining Rings E6. Prepare the new Retaining Rings, no reuse. Hook the Reduction Belt on the Motor Pulley. Adjust the tension of the Reduction Belt. (Refer to “6-1-5. Adjusting the tension of Platen Belt and Reduction Belt”.) GT-3 Series...
Page 142: Adjusting The Tension Of Platen Belt And Reduction Belt
Screw the Nut 2 M4 (2) and the two Bolt Sockets (1), load and unload the Platen by hand to make it move smooth, and then check the tension again. <Note> Repeat the steps 1 to 3 if the tension is out of the reference value. Connect the connector from the Platen Motor to the Main PCB. GT-3 Series...
Page 143 Screw the Nut 2 M4 (2) and the two Bolt Sockets (1), load and unload the Platen by hand to make it move smooth, and then check the tension again. <Note> Repeat the steps 1 to 3 if the tension is out of the reference value. Connect the connector from the Platen Motor to the Main PCB. GT-3 Series...
Page 144: Platen Motor
Disconnect the Harness (4) and remove it from the clamps below. Disconnect the Platen Motor Connector (CN4). Clamps Clamp Connector for Platen Motor (CN4) Remove the Nut 2 M4 (5) and the Bolt Socket (6) for adjusting the tension of the Belt. GT-3 Series...
Page 145 Shift the Reduction Belt (8) from the Pulley. Remove the Platen Pulse Motor (9) together with the Motor Bracket (10). Remove the one Screw (11) and Cord Holder 5N (3) (10) (11) Remove the four Bolt Sockets (12). (12) GT-3 Series...
Page 146 - The covering of the Harness should go to the Motor side by 10 mm (see the right photo). 10 mm 45° Covering goes to the Motor by 10 mm. Assemble the Motor Bracket (2) to the Motor Connecting Plate (bottom) with the four Bolt Sockets (7). GT-3 Series...
Page 147 Assemble the Reduction Belt and adjust the Tension.（See “6-1-5. Adjusting the tension of Platen Belt and Reduction Belt”.） Fix the Harness (8) with clamps shown below, and connect the Platen Motor Connector to the Main PCB [CN4]. Clamp Clamps Connector (CN4) GT-3 Series...
Page 148: Platen Pulley Ball Bearing
Remove the Platen Belt. (Refer to “6-1-4. Platen Belt and Reduction Belt”.) Remove the two Bolt Sockets (4). Remove the Pulley Base (5). Remove the two Ball Bearing Radial 688ZZs (6) and the two Retaining Rings (7). <Note> Prepare new Retaining Rings (7) for replacement, you cannot reuse. GT-3 Series...
Page 149 6. Replacing Parts Assembling Front side Mount the two Ball Bearing Radial 688ZZs (1) and the two Retaining Rings (2). <Note> Prepare new Retaining Rings for replacement, you cannot reuse. Confirm that the F Pulley Assy (3) can rotate smoothly. GT-3 Series...
Page 150 <Note> Prepare new Retaining Rings for replacement, you cannot reuse. Confirm that the R Pulley Assy (6) can rotate smoothly. Mount the Pulley Base (7) and the Platen Belt, and adjust the Belt Tension. (Refer to ”6-1-5. Adjusting the tension of Platen Belt and Reduction Belt”.) GT-3 Series...
Page 151: Platen Origin Sensor
6-1-8. Platen Origin Sensor Disassembling Remove the Screw (1) and remove the Sensor Holder (2). Disconnect the Harness: Platen Origin (3) from the connector (4). Remove the Origin Sensor (6) from the Sensor Holder (7) by pushing the claws (5). GT-3 Series...
Page 152 Fix the Sensor Holder (5) with the one Screw (6). <Note> Mount the Sensor Holder with fitting the two projecting points of the Sensor Holder (B) with the two positioning holes (A) on the Guide Support Plate R. GT-3 Series...
Page 153: Adjustment Of The Platen Sensor Dog
Cover the Platen with paper, e.g. four sheets of A4 Paper as shown below. The edges should be aligned with the Platen. Print the Grid14x16.ar3 data in the [ Useful tools ] of [Brother GT-3 Tools ] in your PC. (Refer to the “3-3-7. Opening the Useful Tools” in the Instruction Manual”.)
Page 154 Fix the Platen Sensor Dog by pushing it to the machining surface (arrow direction) of the Platen Arm (3). The standard top/bottom positions of the Platen Sensor Dog should be described in Fig A. Adjust it within the ±2 mm or less. 0 ± 2 mm Adjust GT-3 Series...
Page 155 Sensor Dog backward by 2mm Adjust the top/bottom margins almost equal, the differences within 3 mm, by repeating the step (2) to (5) in the above. Mount the Cover PF and Cover DL. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.） GT-3 Series...
Page 156: Platen Top Plate And Shoulder Bar
Peel off the Platen Sheet as well as the adhesive tape from the Platen surface. <Note> Prepare a new Platen Sheet for replacement, you cannot reuse. 0077Ｙ Remove the four Screws (3) and remove the Shoulder Bar (4). GT-3 Series...
Page 157 Mount the new Platen Top Plate (7) on the Platen Shaft (8). <Note> Insert the Platen Shaft to the hole on the Platen Top Plate. Fix the Platen Top Plate (7) with the one Screw (5) in the center and the four Screws (6) at the corners. GT-3 Series...
Page 158 <Note> Put the Platen Sheet straight against the Platen without making creases. 0078Ｙ 12. Confirm the level of the Platen Top Plate. (Refer to “6-1-11. Leveling of the Platen Top Plate”.) GT-3 Series...
Page 159: Leveling Of The Platen Top Plate
<Note> Confirm the height from the bottom of the Head Holder Assy (C) to the surface of the Platen Top Plate (D) should be 9.8 ± 0.2 mm when the Height Adjustment Lever (4) is at the A position. 10 mm 9.6 mm 9.8 ± 0.2 GT-3 Series...
Page 160 <Note> Rotate the Height Adjustment Screw by 1/4 or even 1/8 so that you can understand how much you have adjusted. Fix the Nut M8 P1 (3) with the MINUS driver set in the groove of the Height Adjustment Screw. GT-3 Series...
Page 161 Tighten the Screw (1). Adjust the level of the Platen Top Plate by the levelness of the four (B)’s should be 0.5 mm or less, by repeating the steps 1 to 5 with the center (A) as the standard. GT-3 Series...
Page 162: Carriage Motor
Feel some play (backlash) with the Gear of the Pulley side when you fix the Gear of the Motor side. Confirm that there should be 0.01mm – 0.1mm backlash all around the Gear of the Pulley side (perimeter). <Note> Less or no backlash may damage the Motor Shaft and make the lifetime shorter than the normal condition. GT-3 Series...
Page 163 Firmware Adjustment with GT-3 Service Tool --- Adjust CR Speed & CR Motor Date. Turn ON the printer. Execute GT-3ServiceTool.exe by double-clicking. Select [ Printer Parts Exchange ] and click [ Next ]. Select [ Carriage Motor ] and click [ Next ]. Follow the wizard and adjust the firmware. GT-3 Series...
Page 164: Carriage Driving Parts
If you replace the Belt only, disassembling is finished here. Go to the step 4 in Assembling. Disconnect the Connector (A) of the Motor. Remove the Bolt Socket (5) and remove the CR Drive Unit ASSY (6). Remove the Bolt Socket (1) and remove the CR Follow Unit Assy (7). GT-3 Series...
Page 165 5.3 ~ 5.9 N Repeat the step 1 and 2 above until the tension should be as shown below: New Belt: tension 80-90 N (force pushing by hand: 5.3-5.9N) Used Belt: the original tension measured before you disassembled. GT-3 Series...
Page 166 Turn ON the printer. Execute GT-3ServiceTool.exe by double-clicking. Select [ Printer Parts Exchange ] and click [ Next ]. Select [ Carriage Belt or tension adjustment ] and click [ Next ]. Follow the wizard and adjust the firmware. GT-3 Series...
Page 167: Encoder Strip
Remove the four Bolt Sockets (3), two Screws (4) and shift the Carriage Back Plate (6) so that you can see the Encoder Strip (5) inside. <Note> Take care not to bend or crush the Tubes; they are very fragile. Shift GT-3 Series...
Page 168 Remove the Spring (7) and Resin Rivet (8), and then remove the Encoder Strip (5). Push the tip of the Resin Rivet (8) and pull out the core to remove. <Note> Take care not to give any damage to the Encoder Strip (5). Pull out the core 芯を抜く Push 押す GT-3 Series...
Page 169 Align the Encoder Strip (5) in the front (D) of the support plate when you hook the Spring (7). <Note> Take care not to give any damage to the Encoder Strip (5); it is OK if the support plate gets damaged. (Following to the next page) GT-3 Series...
Page 170 Mount the Cover UB and UF. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Adjustment Execute CR Origin Sensor Adjustment. (Refer to “3-1-5-1. CR Origin Sensor Adjustment”.) If read error occurs, e.g. printing position shift, clean the Encoder Strip. (Refer to “5-1-5. Cleaning the Encoder Strip”.) GT-3 Series...
Page 171: Sensor Flap
Remove the Screw (3), the Bolt Socket (4) and remove the Sensor Flap Shaft (5) and the Sensor Plate Support Plate L (6). Remove the Connector (A) that connects to the Flap Sensor and the Flap Solenoid. Remove the Bolt Socket (7) and remove the Sensor Plate Support Plate R (8). GT-3 Series...
Page 172 Mount the Cover DR. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Fix the Sensor Flap with the three screws. Mount the Cover DL and the Cover PF (refer to “6-1-2. Assembling/Disassembling of the Covers”.), and close the Front Cover UF. GT-3 Series...
Page 173 OFF when the Sensor Flap moves by approx. 0.5mm naturally when you release your hand. If the Flap Sensor will not switch OFF/ON, then loosen the Nut (11) and rotate the Bolt Socket (12) to adjust the switching position. Lower the Flap to the lowest bottom It moves back naturally by 0.5 mm. GT-3 Series...
Page 174: Assembling / Disassembling Of The Maintenance Unit
Nozzles clean and wipe softly the Nozzle Plate (1) with the Clean Applicator. ・ Use one Clean Applicator for one Print Head. ・ Wipe off the dirty ink on the sponge with clean and soft cloth. Wet with Wash Liquid and wipe off. 00161Y,0052Y GT-3 Series...
Page 175 “6-1-2. Assembling/Disassembling of the Covers”. Disconnect the connector (2) from the Maintenance PCB (1). Remove the Connector (2) and the Cord Clamp (3) to make the Harness free. Remove the four Bolt Sockets (4) that fix the Maintenance Unit with the printer. GT-3 Series...
Page 176 U-shaped grooves (1). It is easier to guide the position by inserting the M4 screws. Tighten the four Bolt Sockets temporarily to adjust the Maintenance Unit back and forth. <Note> Pay attention that the Waste Ink Tube (2) should not be bent. GT-3 Series...
Page 177 Rotate the CL Drive Cam (1) with a finger and move the Cap Rubbers (2) to the down position. Maintenance Unit Set the Maintenance Unit Check Gauge (3) on the Shaft (4) and the Frame (5) under the Belt. Cross the Check Gauge and the Shaft at right angles (perpendicularly). GT-3 Series...
Page 178 Rotate the CL Cam with a finger and move the Cap Rubbers to the up position. Additionally rotate the CL Cam to move the Cap Rubbers at the bottom position. Move the Carriage between the Flushing Plate and the Platen, so that you can see the surface of the Print Heads. GT-3 Series...
Page 179 (11) (10) (10) Mount the Flushing Plate. 10. Mount the Covers. Refer to “6-1-2. Assembling/Disassembling of the Covers”. 11. Remove the Print Head Protection Films. 12. Turn ON the printer. 13. Confirm the initialization. Turn OFF the printer. GT-3 Series...
Page 180: Wiper Cleaner
Move the Wiper Cleaner slightly to the left (1-2 mm) to release the claw in the left. Pay attention not to tilt the Wiper Cleaner or the waste ink may drop. Keep flat and move slowly. <Note> Do not tilt the Wiper Cleaner, ink may get on your hands or clothing. 0059Y GT-3 Series...
Page 181 If your printer turns on with no errors, replacement of the Wiper Cleaner has been completed successfully. Turn off your printer and check if the Wiper Cleaner is correctly mounted if something irregular occurs, e.g. abnormal noise or error "No Wiper Cleaner (CMYK/White)". 0066Y GT-3 Series...
Page 182: Checking And Adjusting The Wiper Blade Assy
Cover your right hand with a plastic bag so that you can hold the used Wiper Cleaner safe and clean. Pick the right edge of the Wiper Cleaner and move slightly to the right (1-2 mm) by your right hand, the claw in the right will be released. 0058Y GT-3 Series...
Page 183 Pick the plastic bag on your right hand with your left hand, and wrap the Wiper Cleaner with the plastic bag. 0060Y Remove the wrapped Wiper Cleaner carefully, not to drop waste ink and dispose in according with local regulations. 0061Y <Note> Pay attention not to soil the Timing Belt and the other parts with waste ink. GT-3 Series...
Page 184 6. Replacing Parts Clean the Caps and Wipers with Maintenance Cleaning Kit if necessary. Wear the plastic gloves (the ones in the Maintenance Cleaning Kit). 0063Y.0064Y.0065Y GT-3 Series...
Page 185 <Note> Do not stretch the Wiper Drive Plate by force, it may be damaged. Wiper Blade Assy Wiper Drive Plates In the left side 11. Insert the projections (4) of the new Wiper Blade Assy to the oval holes on the left Wiper Drive Plate. GT-3 Series...
Page 186 If an abnormal sound is emitted or some errors appear when you turn ON the printer, there is a possibility that the Wiper Blade and the Wiper Cleaner may be touching. Confirm the positions and the situation that the Wiper Cleaner is properly mounted. GT-3 Series...
Page 187: Pump Tube
Remove the Cover DB and the Cover PB in the back, and the Cover DL and the Cover PF in the front. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Suction Pump Assy Remove the two Screws (1) that fix the Pump Holder. Disconnect the Pump Tube (3) that is connected to the Drain Plug (2). GT-3 Series...
Page 188 Cut the Band (4) with the nippers and remove the Pump Tube (3) from the T Plug (5). Remove the two Screws (7) that fix the Pump Rotor Holder (6). Remove the Pump Rotor Holder (6) by lifting the left edge to your side by 2mm. GT-3 Series...
Page 189 Insert the new Pump Tube (9) in the U-shaped groove. 10. Apply some grease (SB3229001GREASE EM-30L) slightly to the new Pump Tube (9), 30-140mm long from the edge of the Band, approx 0.3 gram. Take care not to apply too much grease. 30 mm 140 mm GT-3 Series...
Page 190 12. Fix the Pump Rotor Holder (6) with the two Screws (7) with tightening torque 0.3 N·m. Do not push the Pump Rotor Holder to the right side. 13. Insert the Pump Tube (3) to the T Plug (5). Bind it with the Band (4) not to slip the Pump Tube from the T Plug (5). GT-3 Series...
Page 191 16. Insert the Pump Holder to the Frame and fix it with the left/right Screws (1) with tightening torque 1.5 N·m. 17. Attach the Covers. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) 18. Adjust the firmware (Tube pump) with GT-3 Service Tool. Refer to the end of “6-1-20.Suction Pump Assy”. GT-3 Series...
Page 192: Suction Pump Assy
(Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Suction Pump Assy Remove the Maintenance Unit. Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”. Disconnect the Connector of the Harness:MNT Motor P (1) from the Maintenance PCB (2). GT-3 Series...
Page 193 Remove the sensor (4) from the Harness: MNT Sensor (3). Cut the Band (5) with nippers and remove the Pump Tube (7) from the T Plug (6). Remove the two Screws (9) that fix the Pump Holder (8). GT-3 Series...
Page 194 10. Insert the Pump Holder (8) to the Frame (16) and fix it with the left/right Screws (9) with tightening torque 1.5 N·m. Pass through the Pump Tube (7) at the side of the Frame. Pay attention that the Pump Tube should not bend around the outlet. (16) GT-3 Series...
Page 195 13. Connect the Connector of the Harness:MNT Motor P (1) from the Maintenance PCB (2). 14. Mount the Maintenance Unit. Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”. 15. Attach the Covers. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) GT-3 Series...
Page 196 Firmware adjustment with GT-3 Service Tool Turn ON the printer. Execute GT-3ServiceTool.exe by double-clicking. Select [ Printer Parts Exchange ] and click [ Next ]. Select the [ Tubepump ] and click [ Next ]. Follow the wizard and adjust the firmware. GT-3 Series...
Page 197: Replace The Pump Sensor
Turn OFF the printer. Remove the Cover PB and DB. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Suction Pump Assy Remove the connector (1) and remove the two Screws (2) that fix the Sensor Holder of the Suction Pump. GT-3 Series...
Page 198 (There is a hole in the circumferential of the Pump Rotor Gear; the sensor is ON at the hole.) Turn OFF the printer after the initial operation is confirmed. Attach the Covers. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) GT-3 Series...
Page 199: Cap Rubber
Checking and Adjusting the Wiper Blade Assy”.) Move the Wiper Blade Assys to the both edges. Cap Lifter Frame Remove the Cap Rubber (1) from the Cap Rubber Holder (3). Pay attention not to break the claws (4) of the Cap Rubber Holder. GT-3 Series...
Page 200 Confirm that the six claws (3) are properly hooked, and push the Rubber Cap from the top to make the Cap Rubber flat and fixed. Mount the Wiper Cleaner. Close the Front Cover UB. Turn ON the printer. Turn OFF the printer after the initial operation is confirmed. GT-3 Series...
Page 201: Cassette Sw Harness Assy
Mount the new Cassette SW Harness Assy (1), with the hinge part of the Sensor to the top, at the boss inserted on the groove (3) of the Cleaner Sensor Holder (2). Do the other side as the same way. GT-3 Series...
Page 202 13 mm Mount the Wiper Blade Assys and the Wiper Cleaners. Mount the Maintenance Unit. (Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”. ) Confirm the initial operation, which is OK with no Wiper errors occur. GT-3 Series...
Page 203: Sensor For The Cl Drive Cam
Remove the Screw (2) that fixes the Cap Sensor Holder. Remove the Connector (3) and the Sensor (4). Replacement & Assembling Replace to the new Sensor (4) and connect the Connector (3). Confirm that the claws (5) of the Sensor are fixed properly. Inlet of the connector GT-3 Series...
Page 204 Replace to the new Sensor and connect the Connector. Make sure that the all the claws of the sensor are properly hooked. Fix the Cap Sensor Holder (3) with the Screw (4) with tightening torque 1.5 N·m. Mount the Maintenance Cover (1) with the Screw (2) with tightening torque 0.5 N·m. GT-3 Series...
Page 205: Motor Of The Cl Drive Cam
Replace to the new Motor (1) and connect the Connector (3). Fix the Motor (1) with the Screw (2) (see the photo at the top) with tightening torque 0.8 N·m. Connect the Connecter (3) with the bottom up. GT-3 Series...
Page 206 Confirm that the Caps should move Up/Down properly, with no errors. Turn OFF the printer and turn ON again, to initialize the Carriage position to the Maintenance Unit and turn OFF. Attach the Maintenance Unit and the Covers. (Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”.) GT-3 Series...
Page 207: Wiper Sensor
Remove the Maintenance Unit. (Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”.) Remove the Connector (1). Remove the Screw (3) that fixes the W Sensor Holder (2). Replacement & Assembling Replace the Sensor (4). Confirm that the claws (5) of the Sensor are hooked firmly. GT-3 Series...
Page 208 Move the Carriage out of the Maintenance Unit by hand when the Caps are down, and confirm that the Wiper should move [ to Center ] or [ to Both Ends ] properly. Push the Stop Button to move the Carriage to the home position and turn OFF the printer. GT-3 Series...
Page 209: Adjusting The Height Of Wiper Blade
Pass the Maintenance Unit Check Gauge (3) under the Belt (4) and put its both edges on both the Shaft (5) and the Frame as shown in the image below. Confirm that the Maintenance Unit Check Gauge should cross the Shaft vertically. GT-3 Series...
Page 210 0 ± 0.3 mm. Confirm by moving the WL Cam Bracket L parallel. (Screw (S/P Washer) M3x8 with tightening torque 0.5 N·m, Screw (S/P Washer) M4x8 with tightening torque 1.5 N·m) (Continued to the next page) GT-3 Series...
Page 211 18. Push the Stop Lever to release the lock when you close the Front Cover (Cover UF) with both hands. 19. Turn ON the printer, and initialization will start and the Carriage will move to the original position (on the Maintenance Unit). 20. Turn OFF the printer. GT-3 Series...
Page 212: Adjusting The Position Of Wiper Blades
CL Guide Lower (approx. 0.3 mm). 0.3 mm Center line Tighten the screws (2) that fix the W Motor Base Lower (1), with tightening torque 1.5 N·m. Mount the Maintenance Unit. (Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”.) GT-3 Series...
Page 213 Move the Carriage out of the Maintenance Unit by hand when the Caps are down, and confirm that the Wiper should move [ to Center ] or [ to Both Ends ] properly. Push the Stop Button to move the Carriage to the home position and turn OFF the printer. GT-3 Series...
Page 214: Wiper Motor
Move the Carriage out of the Maintenance Unit by hand when the Caps are down, and confirm that the Wiper should move [ to Center ] or [ to Both Ends ] properly. Push the Stop Button to move the Carriage to the home position and turn OFF the printer. GT-3 Series...
Page 215: Waste Ink Tubes
Head (7) by pushing down. Pass through the new Capping Tube through the Bush (8) by pushing down the Plunger Head (7) and connect the Tube Joint (6). The length of the Capping Tube should be 110 ± 5 mm from the edge of the Solenoid to the Pump side. GT-3 Series...
Page 216 Remove the eight Capping Tubes (10) from the Y-shaped Tube Joints (9). Remove the Capping Tube (10) by pushing down the Plunger Head (7) by hand. (10) Solenoid Remove the Capping Tube (12) by pulling out the Cap Rubber Holder (11). (11) (12) (13) GT-3 Series...
Page 217 180 ± 5 mm from the Cap to here 247 ± 5 mm from the Cap to here Confirm the tube crossing as shown below. Or the outer tubes of Color side may sag. GT-3 Series...
Page 218 Connect the Y-shaped Tube Joints (4) and the Capping Tubes (6). Make sure that those tubes should cross as shown below. 1mm or less 0025N Connect the T-shaped Tube Joint (7) and the Connecting Tube (8), and the Capping Tube (9). GT-3 Series...
Page 219 Insert the Pump Holder to the Frame and fix it with the two screws (10) from the both side, with tightening torque 1.5 N·m. (10) (10) Mount the Maintenance Unit. (Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”.) GT-3 Series...
Page 220: Solenoid For Head Cleaning
Remove the Harness: MNT Solenoid (1) from the Clip: CS-6U (2) and the Cord Clamp 13-L (3) バルブ and remove the eight Connectors (4). Remove the eight Capping Tubes from the Y-shaped Tube Joint. (Refer to the step 5 in “6-1-30. Waste Ink Tubes”.) Remove the four screws (5). GT-3 Series...
Page 221 Fix the Harness: MNT Solenoid with the Clips CS-6U and the Cord Clamp 13-L. Connect the eight Capping Tubes. (Refer to the Replacement & Assembling in “6-1-35. Waste Ink Tubes”.) Mount the Maintenance Unit. (Refer to “6-1-16. Assembling / Disassembling of the Maintenance Unit”.) GT-3 Series...
Page 222: Ink Supply Mechanism
 Confirm all Tubes are empty by opening the Front Cover UF.  If the ink still remains, then close the Front Cover UF and execute the steps 3 and 4 again. Dismount the Cover Cartridge. (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) GT-3 Series...
Page 223 Remove the four Screws (5) to loose the two Tube Holder Fixes (6). Remove the four Screws (5) to loose the two Tube Holder Fixes (6). <Note> Do not disassemble the Tubes from the Tube Holder Fixes. <Note> Do not disassemble the Tubes from the Tube Holder Fixes. GT-3 Series...
Page 224 The weight of the Ink Cartridge Base Unit plus eight Ink Cartridges will be approx. 10 kg. Handle with The weight of the Ink Cartridge Base Unit plus eight Ink Cartridges will be approx. 10 kg. Handle with care. care. 10 kg (11) (12) (13) (10) (14) GT-3 Series...
Page 225 Remove the three Screws (5) and dismount the Needle Bracket (6). <Note>  Pay attention not to put dust or dirt into the Needles. Cover the edge of the Tubes with the Caps listed below.  Disassemble the Needle Bracket (6) here if necessary. (Refer to “6-1-36. Needles”.) GT-3 Series...
Page 226 ・ Follow the order of the screwing the three screws (5) when you assemble the Needle Bracket (6); first tighten the screws of both sides, then tighten the center screw. <Note> The tightening torque of the screws should be 0.5 N·m. GT-3 Series...
Page 227 Follow the order of the screwing the six screws (3) when you assemble the Ink Switch PCB Assy (2); first mount the screws of both sides ((3) in the photo below), then tighten the rest of four screws. <Note> The tightening torque of the screws should be 0.5 N·m. GT-3 Series...
Page 228 “2-6-2. Installing Ink”. Prepare the Maintenance Cartridge W and Maintenance Solution for White Ink. When all the inks are filled with the Tubes, print the Nozzle Check Pattern to confirm the print quality. (Refer to “2-6-3. Test Print”). GT-3 Series...
Page 229: Replacing The Filter On The Print Head
Put on the gloves. Cover the Print Heads and the Carriage with a soft and clean cloth (1) so that the ink may not make them dirty as well as some parts may not drop inside the printer. The printed surface on the top 77 mm 67 mm GT-3 Series...
Page 230 Prepare the new Filter. Insert the Filter to the upper tube and rotate the two joints (upper and the bottom of the Filter) by 30-45 degrees. <Note> Confirm the connection; there may be cause loose (slow) ink introduction or missing nozzles. Rotate the top and the bottom of the Filter. GT-3 Series...
Page 231 There may be air coming from the joint part of the Filter after you replace and find missing nozzles in operation. Confirm if the Tube is filled with ink with no air, the connection is firmly fixed. Execute the previous steps 10 and 11 to re-load the ink. GT-3 Series...
Page 232: Replacing The Filter For White
After 30 seconds, when the peep sounds ring, the message [ Open Air-in Cap ] is indicated on the Control Panel. Uncap (open) the air-in cap and press OK button. The air goes into the tube and washes away the remained White Ink. It takes about 10 minutes to wash one tube. 0194Y GT-3 Series...
Page 233 12. Rotate the Tube Connector (2) (small white part over the Print Head) by 90 degrees (left figure), lift it straight up slowly and remove the Tube from the Print Head. Remove the Tube Connector (2). 13. Remove the Filter Assy mounted on the printer. Disconnect the connection by rotating the top of the Joint. GT-3 Series...
Page 234 Confirm if the Tube is filled with ink with no air, if the ink is filled to the replaced Print Head, if the connection of the top and the bottom of the Filter is firmly fixed. Execute the previous steps 19 and 20 to re-load the ink. GT-3 Series...
Page 235: Ink Switch Dog
(center photo) and Pattern 3: the Right type (right photo). Confirm before you unscrew, and be sure to fix them as they were. Left type Center type Right type Pattern 3 Pattern 1 Pattern 2 (Right type) (Center type) (Left type) GT-3 Series...
Page 236 Remove the four Screws (5) and make the two Tube Holder Fixes (6) free. Do not remove the Tubes from the Tube Holder Fixes. Remove the eight Connectors (8) of the Harness: Ink Sensor from the Ink Sensor PCB Assy (7). GT-3 Series...
Page 237 Remove the Connector (1) of the Harness: Ink MNT from the Ink Switch PCB Assy (9). (10) Remove the two Screws (11). (11) (11) Hold the Ink Sensor Switch Dog Unit with your hand shown in the photo below, and remove the two Screws (12) at the both ends. (12) (12) GT-3 Series...
Page 238 11. Remove the Ink Switch Spring Support (16), Spring Compression 4.1X15.9 (17) and the Ink Switch Dog (18) in order. Remove the Retaining Ring CSTW-12 (20) from the Ink Switch Guide Bushing (19) and remove it from Ink Switch 1 Bracket (21). (19) (21) (20) (18) (17) (16) GT-3 Series...
Page 239 Assemble the Ink Switch Dog and then the Spring Compression 4.1X15.9 as shown in the photos below. Insert and fix the convex part of the Ink Switch Guide Bush to the groove on the Ink Switch Spring Support. GT-3 Series...
Page 240 (2) Pull out the target Ink Cartridge by 5 cm and confirm if the indication on the Display shows No ink cartridge. (3) Insert the Ink Cartridge to the end and confirm if the indication on the Display shows the cartridge is in. GT-3 Series...
Page 241: Tubes
・For covering: Tube Joint 2 *VRFP6 (SA5905) (1) Tube Joint VRSP6 (SB0644) (2) VRFP6 VRSP6 <Note> Wash the ink and dust and flush with distilled water before you re-use the Tube Joints. Keep away from the dust in storage. GT-3 Series...
Page 242 6. Replacing Parts Follow the Tube Layout Chart and mark the positions on the new Tube. <Note> There are two types of marking layout; for the Color side and the White side. GT-3 Series...
Page 243 ・If you find the ink is left inside the Tube, close the Front Cover UF and repeat the step 2 to 6 until all the ink is flushed out. Remove the Front Cover UF, Cover UB and Cover Cartridge. (Refer to “6-1-2. Assembling/ Disassembling of the Covers”.) Unlock the (1) as shown in the photo below. Remove the two Screws (2). GT-3 Series...
Page 244 ・Pay attention to the ink flowing out from the Tube in disconnecting; it may give damage to your hands, the printer and the table. Do not give stress to the upper and lower Tubes in disconnecting; it may be damaged. GT-3 Series...
Page 245 14. Remove the one Bolt Socket (8) and pull up the Tube Holder Support (10) from the Tube Holder Support Shaft (9). <Note> Pay attention not to hook the Tubes in operation. (10) 15. Remove the two Screws (11). (11) GT-3 Series...
Page 246 <Removing the two Clamps NK-18N (14) and the two Tube Holder Fixes (15)> (15) (14) (14) (15) <Note> Do not drop Two Washers (17). 17. Remove the one Screw (16) and remove the Clamp NK-18N (14). <Note> Do not drop the two Washers (17) at the bottom. (14) (16) (17) GT-3 Series...
Page 247 19. Remove the one Screw (19) and Clamp NK-18N (14). <Note> The recent productions have neither Screw (19) nor Clamp, NK-18N (14) mounted. (14) (19) 20. Remove the two Screws (20) and remove the Tube Holder Fix (15). (20) (15) GT-3 Series...
Page 248 23. Cover the needle with the protection (cut tube) to protect from the dust and threads. Tube Joint 2:*VRFP6 Protection (cut tube) 24. Remove the old Tube from the printer. <Note> Pay attention not to pull out the other Tubes; do not give damage to the other Tubes in operation. GT-3 Series...
Page 249 Grip the new Tube with the Middle Tube (2) and the Round Tube Holder (1). <Note> Confirm that the slit of the Middle Tube (2) should be in the center of the open space of the Round Tube Holder (1). GT-3 Series...
Page 250 Remove the Joint VRSP6 (7) to cover the Tube and connect the Tube to the Joint VRFT6 (4). <Note> Rotate the Joint by 30-40 degrees where you insert. Do not twist or push in, otherwise the Joint may be damaged. Fix the Tube with the Wire Saddle (5). GT-3 Series...
Page 251 6. Replacing Parts Follow the Tube layout as shown in the bottom photos. Ｗ4 Ｗ3 Ｗ2 Ｗ1 Ｗ1 Ｗ2 Ｗ3 Ｗ4 Ｗ1 Ｗ2 Ｗ3 Ｗ4 Ｗ4 Ｗ3 Ｗ2 Ｗ1 GT-3 Series...
Page 252 Fix them with the two Screws (8). 10. Mount the Tube Holder Support (9) on the Tube Holder Support Shaft (10) and fix them with the one Bolt Socket (11). <Note> Pay attention not to hook the Tubes in operation. (11) (10) GT-3 Series...
Page 253 The Slit of the Round Tube Holder 12. Fix the Tube Holder Fix (12) with the two Screws (13). (12) (13) 3~7 mm 13. Fix the other Tube Holder Fix (12) with the two Screws (14). (14) (12) GT-3 Series...
Page 254 The recent productions have neither Screw (18) nor Clamp, NK-18N (15) mounted. (15) (18) NG (Jammed) 16. Remove the protection of the needle and insert the Tube. <Note> Pay attention not to get the dust and threads into the inside of the needle. GT-3 Series...
Page 255 <Note> Insert the Tube and Tube Clamp D3 (19) until the edge of the Tube Clamp D will touch the nut 8 (20). (20) (19) (19) Until both edges can touch each other 19. Remove the two Screws (21) and remove the Maintenance Cover (22). (22) (21) GT-3 Series...
Page 256 20. Rotate the Gear (23) inside with your hand to move the Caps down. (23) 21. Move the Carriage (24) with your hand and confirm if the Tubes are moving smoothly; no kink, no stretch, no touching or no damage. (24) Confirm not to touch with other parts GT-3 Series...
Page 257 24. Mount the Front Cover UF, Cover UB and the Cover Cartridge. (Refer to “6-1-2. Assembling/ Disassembling of the Covers”.) 25. Turn ON the printer. 26. Load the Maintenance Solution first and then load the White Ink. (Refer to “2-6-2.Installing Ink”.) GT-3 Series...
Page 258 Front Cover UF. If you find the ink is left inside the Tube, close the Front Cover UF and repeat the step 2 to 6 until all the ink is flushed out. Remove the Front Cover UF, Cover UB and Cover Cartridge. (Refer to “6-1-2. Assembling / Disassembling of the Covers”.) GT-3 Series...
Page 259 Remove the one screw (3) and remove the Tube Holder Outside (4). 10. Shift the Tube from the U groove (5) in the Tube Holder Inside. <Note> Hold the Tube Holder Outside (4) temporarily with TAPTITE Band P M3X8 (3) to prevent Tubes from slipping. GT-3 Series...
Page 260 11. Remove the one Bolt Socket (6) and pull up the Tube Holder Support (7) from the Tube Holder Support Shaft. <Note> Pay attention not to hook the Tubes in operation. Remove the two Screws (8). Remove the one screw (9) and remove the Tube Holder Outside (10). (10) GT-3 Series...
Page 261 Remove the one Screw (13) and remove the Clamp NK-18N (11). <Note> Do not drop the two Washer Plains M4 (14) at the bottom. (11) (13) (14) Remove the two Screws (15) and remove the Tube Holder Fix (12). (15) (12) GT-3 Series...
Page 262 The recent productions have neither Screw (16) nor Clamp, NK-18N (11) mounted. . (11) (16) Remove the two Screws (17) and remove the Tube Holder Fix (12). (17) (12) 18. Remove the Tube from the Tube Holder Fix (12). (12) GT-3 Series...
Page 263 (18) Cover the needle with the protection (cut tube) to protect from the dust and threads. Protection (cut tube) Tube Joint2 *VRFP6 21. Unlock the Wire Saddle (19) as shown in the photo below. (19) (19) GT-3 Series...
Page 264 Tubes in disconnecting; it may be damaged. Insert the Tube Joint VRSP6 (21) for protection into the Joint VRFE6 (20). (21) 24. Remove the old Tube from the printer. <Note> Pay attention not to hook the Tubes in operation. GT-3 Series...
Page 265 <Note> Confirm that the slit of the Middle Tube (2) should be in the center of the open space of the Round Tube Holder (1). Mount the Spiral 258 (3) on the Tube. <Note> Wrap the Spiral 258 (3) over the Middle Tube (2) and prevent its edge from touching the Tube directly. GT-3 Series...
Page 266 <Note> Rotate the Joint by 30-40 degrees where you insert. Do not twist or push in, otherwise the Joint may be damaged. Do not give stress to the Tube in operation. Fix the Tube with the Wire Saddle (5). Follow the Tube layout as shown in the bottom photos. (Continues to the next page) GT-3 Series...
Page 267 6. Replacing Parts Mount the Tube Holder Outside (6) with the one screw (7). Fix them with the two Screws (8). GT-3 Series...
Page 268 (10) 11. Wrap the Tube with the Tube Holder Unit as shown in the figure below. The Slit of the Round Tube Holder Fix the Tube Holder Fix (12) with the two Screws (13). (13) (12) 3~7 mm GT-3 Series...
Page 269 (17) Fix the other Clamp NK-18N (15) with the one Screw (18). <Note> Pay attention not to hook the Tubes in operation. The recent productions have neither Screw (18) nor Clamp, NK-18N (15) mounted. (15) (18) NG (Jammed) GT-3 Series...
Page 270 18. Fix the Tube with the Tube Clamp D3 (19). <Note> Insert the Tube and Tube Clamp D3 (19) until the edge of the Tube Clamp D will hit the nut 8 (20). (20) (19) (19) Until both edges can touch each other GT-3 Series...
Page 271 20. Rotate the Gear (23) inside with your hand to move the Caps down. (23) 21. Move the Carriage (24) with your hand and confirm if the Tubes are moving smoothly; no kink, no stretch, no touching or no damage. (24) (Continues to the next page) GT-3 Series...
Page 272 24. Mount the Front Cover UF, Cover UB and the Cover Cartridge. (Refer to “6-1-2. Assembling/ Disassembling of the Covers”.) 25. Turn ON the printer. 26. Load the Maintenance Solution first and then load the White Ink. (Refer to “2-6-2.Ink Installation”.) GT-3 Series...
Page 273 Tube from the Print Head (right figure). Remove the Tube Connector (2). <Note> You can decrease the ink drop coming out of the Tube when you wait about 20 seconds before going to the next step 4. (The following photos show the Yellow as the example.) GT-3 Series...
Page 274 Prepare the assembly of the new Tube and the new Filter. Rotate the Joint by 30-40 degrees where you insert. Hold the Tubes and Filters gently. <Note> Do not twist or push in, otherwise the Joint may be damaged. GT-3 Series...
Page 275 Rotate the Tube Connector (2) by 90 degrees (right figure) to fix the Tube. Turn ON the Printer. Load the ink to the replaced Tube. (Refer to “2-6-2. Introducing Ink”.) Print Nozzle Check Pattern to confirm the print quality. (Refer to “2-6-3. Test Print”.) GT-3 Series...
Page 276: Needles
Do not remove the PCV cap (3) until you connect the Tube to keep the inside clean. Do not remove the Needle-Tip Tube (4) until you insert the Filter Cartridge or Ink Cartridge. Flange of the Needle (B) GT-3 Series...
Page 277 The following procedure is for replacing Magenta Tube. Follow the process when you replace the Tubes of other colors (Black, Cyan, Yellow, W1, W2, W3 and W4). Put on the plastic gloves. Loosen the Tube Clamp D3 (1) that fixes the Needle and the Tube, and then remove the Tube. GT-3 Series...
Page 278 <Note> Watch your fingers when you insert your hand to the Needle Bracket; the tip of the Needle is really sharp and easy to get injured. Slide back the Needle to the Ink Cartridge Holder and remove the Needle from the Needle Bracket (8). GT-3 Series...
Page 279 <Note> The tightening torque of the Nut 8 should be 1 N·m. Reconfirmation Confirm from the bottom side if the Needle should be fixed on the Needle Bracket with no space left. No space here Remove the Needle-Tip Tube (5) and insert the Filter Cartridge (6). GT-3 Series...
Page 280 ・Insert the Tube and the Tube Clamp D3 until the edge will hit the Nut 8. Until the touch the both edges Remove the Filter Cartridge (6) and insert the Ink Cartridge (9). GT-3 Series...
Page 281 Color Ink and the White Ink. Follow the process in “2-6-2. Installing Ink”. Prepare the Maintenance Cartridge W and Maintenance Solution for White Ink. Print the Nozzle Check Pattern to confirm the print quality. (Refer to “2-6-2. Test Print”) GT-3 Series...
Page 282: Ink Retrieval Unit (Gt-381/Gt-361 Only)
Turn OFF the printer when finished. ・Open the Front Cover UF to confirm if the ink inside the Tube is flushed. ・If the ink remains, close the Front Cover UF and execute the steps (3) and (4) again. Turn OFF the printer. GT-3 Series...
Page 283 Remove the Tubes (5) connected to the Ink Return Valve Assy (4); four for GT-381, two for GT-361. Rotate the tapped part (A) of the Tube Joint in Tube D3XL200 Supply (6) to the direction shown in the arrow, and then remove it from the Joint VRFT6 (7); four for GT-381, two for GT-361. GT-3 Series...
Page 284 Mount the new Tube D3XL200 Supply (5). Insert the tapped part (A) of the Tube Joint into the Tube D3XL200 Supply (6) and fix it by rotating the Joint to the direction shown in the arrow, by 30-45 degrees. Four for GT-381, two for GT-361. GT-3 Series...
Page 285 Load the Ink inside the Tubes. Prepare the Maintenance Cartridge W and Maintenance Solution for White Ink and follow the process in “2-6-2. Installing Ink”. Print the Nozzle Check Pattern to confirm the print quality. (Refer to “2-6-2. Test Print”) GT-3 Series...
Page 286 Remove the two Bolt Sockets (3) and dismount the Solenoid Ink Return Assy (4). Mount the new Solenoid Ink Return Assy in the reverse process of step 6 above. Push the Stop Lever to release the lock and close the Front Cover UF with both hands. GT-3 Series...
Page 287 <Note> The groove (A) on the Pin Spring Roll AW3 (8) should be horizontal as shown in the figure below when you assemble the Plunger of the GT3 Solenoid W_Ret Assy (4) and the Solenoid Valve Lever (7). GT-3 Series...
Page 288: Print Heads
Open the new Print Head. Put the gloves on your hands not to touch the electronic parts and remove the fitting and the cover. The fitting (A) on the Print Head (see the arrow below) will be used during operation. GT-3 Series...
Page 289 10. Take off the gloves and touch some metallic part to dissipate static electricity (e.g. Covers). Better to put on the Wrist Strap. 11. Remove the plastic cover on the Carriage PCB. Disconnect the white cable (left) and remove the four claws on the both edges (right). GT-3 Series...
Page 290 13. Pull out the black tabs at the both edges of Flat Cable of the Print Head to the front side of the printer, and remove the Flat Cable (the following example: Black). 14. Rotate the Lever (3) to your side that fixes the Print Head. Move it to your side. GT-3 Series...
Page 291 17. Hold the knob (6) of the Print Head (left) and push it downward so that the V-shaped groove can fit the Positioning Pin (5). Push down the Print Head to fix the corner of the Print Head by the Flat Spring (7) (right). Slide the Print Head into the Flat Spring from the right to the left. GT-3 Series...
Page 292 Condenser (big black part on the Carriage PCB) go through the hole of the Plastic Cover (right). 23. Put the Plastic Cover so that the fold at the back should cover the metal plate under the Carriage PCB. GT-3 Series...
Page 293 32. If the quality is OK go on to the next section "2-6-5. Firing Adjustment of the Print Heads" and “2-6-6. Aligning the Print Position of White / Color Print Heads” to complete the adjustment after the Print Head replacement. If you still see the problem in print quality, troubleshoot to improve the print quality. GT-3 Series...
Page 294 Print Head before you remove it. <Note> Pay attention to the dropped ink when you pack and send the Print Head in the box. Select [Maintenance] > [Head Replacement] of the menu and press the OK Button. GT-3 Series...
Page 295 Carriage by leaning the Print Head backward and moving it from the upper left. Do not hit the surface of the Print Head to the other parts or it may be seriously damaged. Do not break or bend the Tubes. GT-3 Series...
Page 296 24. If the quality is OK go on to the next section "2-6-5. Firing Adjustment of the Print Heads" and “2-6-6. Aligning the Print Position of White / Color Print Heads” to complete the adjustment after the Print Head replacement. If you still see the problem in print quality, troubleshoot to improve the print quality. GT-3 Series...
Page 297: Print Head Ffc
Remove the screw on the top. Remove the plastic cover. (1) Pull out the side of the Plastic Cover from the space under the Print Head knob. (2) Pull out the top of the Plastic Cover between the PCB and the metal plate. GT-3 Series...
Page 298 (3) Remove the Plastic Cover by pulling out the FFC from the Slit. Unlock the lock of the FFC Connector and remove the FFC. Crease the new FFC; mark the position of 15 mm from the edge of the FFC and fold it. GT-3 Series...
Page 299 Do not put water around the connectors and metal parts; they may short-circuit and give serious damage to the PCBs. Mount the Cover on the Print Head. (1) Insert the FFC into the slit of the Plastic Cover. (2) Pass the edge of the Plastic Cover between the Heat Sink and the PCB. GT-3 Series...
Page 300 (4) Insert the convex part (4) of the Plastic Cover into the hole (5) on the Damper Case. (5) Insert the side of the Plastic Cover into the bottom of the Print Head Knob. Tighten the screw on the top of the Print Head. GT-3 Series...
Page 301: Waste Ink Units
Pull out the Pump Tube (3) and the Joint (4) from the Waste Ink Joint (2) and remove the screw (5). Move down the Maintenance Unit and disconnect the Maintenance Middle Tube 2 (6) from the Waste Ink Joint (2). GT-3 Series...
Page 302 Disconnect the Waste Ink Tube 1 (8) from the Cord Clamp 13-L (7). Disconnect the Waste Ink Tube 1 (8) from the Ink Tray (9). Remove the four screws (10) and remove the Cap Felt (11). (11) (10) GT-3 Series...
Page 303 6. Replacing Parts Remove the two screws (12). (12) Lift up the CL Guide Lower (13) and remove the Ink Tray (9). (13) (13) GT-3 Series...
Page 304 Mount the Spacer M3-30 (2) on the new Ink Tray (1), with tightening torque 0.5 N·m. Lift up the CL Guide Lower (3) and hold the Ink Tray (1) in the middle of the four Cap Tubes (4). GT-3 Series...
Page 305 Tighten the two screws (6) with tightening torque 0.5 N·m, and mount the Cap Felt (7) facing to the bent portion of the CL Guide Lower (position A). Fix the Waste Ink Tube 1 (8) to the Ink Tray (1) with the Band (9) to the end, less than 1 mm margin from the root. GT-3 Series...
Page 306 Fix the Waste Ink Joint (11) on the Pump Holder (13) with the screw (14), with tightening torque 0.5 N·m, and insert the Pump Tube (15) and the Joint (16) until to the end, less than 1 mm margin from the root. (14) (15) (16) (11) (14) (13) GT-3 Series...
Page 307 10. Mount the Pump Holder on the Frame and fix it with the right/left screws (17), with tightening torque 1.5 N·m. (17) (17) 11. Mount the Maintenance Unit on the printer. (Refer to “6-1-16. Assembling/Disassembling of the Maintenance Unit”.) GT-3 Series...
Page 308: Exhaust Fan
Put the gloves on your both hands, and put your left hand from the space before the Timing Belt to reach the Filter Cover. Lift up the Lock (1) of the Filter Cover by removing the Guide Holes from the projections. 0068Y <Note> Pay attention not to hit the Filter Cover to the Timing Belt. GT-3 Series...
Page 309 Mount the Cover DR in the reverse process in Disassembling step 5 above. Mount the Filter Cover in the reverse process in Disassembling step 6 above. Push the Stop Lever to release the lock when you close the Front Cover UF with both hands. GT-3 Series...
Page 310: Removing The Needle Felt
Remove the two Screws (3) on the top of the Cover Cartridge. Pull out the Cover Cartridge in the direction of the arrow (right photo). Pay attention not to give damage to the Tubes in operation. Keep the Cartridge Cover on the safe and flat place. GT-3 Series...
Page 311 <Note> The recent productions have neither Screws (7) nor Clamps, NK-18N (8) mounted. Remove the four Screws (9) and make the two Tube Holder Fixes (10) movable. Keep mounting the Tubes on the Tube Holder Fixes. (10) (10) GT-3 Series...
Page 312 Pluck all the Needle Felt with Tweezers (photo D). <Note> Do not pull out the Needle Felt (12) from the tip (b) of the Needle; the small fiber may go into the Needle and give damage to the Print Head. (12) GT-3 Series...
Page 313 10. Mount the two Tube Holder Fix (2) and the two Clamps, NK-18N in the reverse process of the step 4-5. <Note>  The recent productions have neither those Screws nor Clamps, NK-18N mounted.  Pay very much attention to the Tubes in the position (f) as shown in the photos below. GT-3 Series...
Page 314 Pull out the Ink Cartridges to your side that you are going to operate by approx. 5 cm. Remove the Ink Cartridges of the both sides in the same way if the operation is not easy. GT-3 Series...
Page 315 Use the Mirror to confirm if the Needle should be clean. Confirm if all the Needles are clean with no Needle Felts remained, then agitate the White Ink Cartridges and load the Ink inside the Tubes. Follow the steps 11-14 in the Process 1. GT-3 Series...
Page 316: Felts On Cartridge Base
・Apply one Felts on GT-341 for Color side. Pattern 1 for GT-341: Cartridge Base (round holes) Remove all the eight round Felts (2) with dirty ink. Apply the new square Felt (2) as shown in the right photo. Pattern 1 forGT-341 GT-3 Series...
Page 317 Better to put 3 marks on the Cartridge Base (1) first and then align the edges of the Felts (2) to Mark Mark those marks. Top position of the tape Mount the Cover Cartridge. (Refer to “6-1-2. Assembling/ Disassembling of the Covers”.) GT-3 Series...
Page 318: Replacing The Electrical Parts
Take care not to cut fingers on metal parts such as heat sinks or covers when inserting and removing connectors or measuring. CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS CAUTION DOUBLE POLE/NEUTRAL FUSING GT-3 Series...
Page 319: Control Box, Operation Panel, Pcbs
Located on the top of the Carriage Assy on which the Print Heads are mounted, to control ink firing for maximum 8 print heads by each. Ink Sensor PCB, Ink Switch PCB Located at the back of the Ink Cartridge to detect the Cartridge and the amount of ink remained. GT-3 Series...
Page 320: Motors, Solenoids, Sensors And Switches
Located at the back of the printer to plug AC Cord into the inlet. 10. Platen Origin Sensor Located in the printer to detect the origin of the Platen. 11. Exhaust Fan Located in the printer to exhaust the mist. GT-3 Series...
Page 321 Located in the middle. This unit is normally closed and opened when the pump takes in the waste ink. GT3 Solenoid Vent Assy Located at the lower right back. This unit is normally closed and opened when the pump takes in the waste ink. GT-3 Series...
Page 322: Control Box Assy
The following parts and units are located in the Control Box. Main PCB Assy Power Supply Unit Located under the Power Cover (A). Surge Absorber PCB Assy Located under the Power Cover (A). Speaker Noise Filter Primary Fuse Located under the Power Cover (A). Secondary Fuse GT-3 Series...
Page 323: Connectors
6-2-6. Connector Locations Main PCB CN11 CN12 CN14 CN15 DC_IN PT_MOT HEAD_PW SPEAK CR_CTRL PT_ORG USB_H CN23 USB_F CN10 CN17 CN22 JAM&CR_MOT PNL_PW EX_IN EX_OUT H_MEN ETHER_1 Panel PCB CN3 BACK LIGHT (backside) CN1 MAIN (backside) CN2 PRINT SW (backside) GT-3 Series...
Page 324 6. Replacing Parts LCD Unit & USB PCB LCD Unit USB PCB BACK LIGHT Power Supply Unit Surge Absorber PCB Assy GT-3 Series...
Page 325 CN1 CAP MOTOR CN2, 3 ORG SENS CN5 MAIN PCB PUMP MOTOR WIPE MOTOR CN12 SENS CN10 VALVE Carriage PCB Assy CN2 WHITE2 CN1 WHITE1 CN3 WHITE3 CN4 WHITE4 CN8 HEAD POWER CN12 YELLOW CN11 CYAN CN9 BLACK CN10 MAGENTA GT-3 Series...
Page 326 Encoder PCB Assy Ink Sensor PCB Assy CN101 INC SENS Ink Switch PCB Assy CN1 MNT CN4 M SENS CN2 Y SENS CN5 K SENS CN7 W3 CN8 W2 CN9 W1 CN6 W4 CN3 C SENS SENS SENS SENS SENS GT-3 Series...
Page 327: Main Pcb Assy
Remove the AC Cord (1). Remove the Cover DR (right side). (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Remove the Harness: Panel Com (3) with the Ferrite Core (2) together from the Cord Clamp (4). Main PCB Assy GT-3 Series...
Page 328 Connect the FFC by inserting the FFC first and then pushing the “black plastic claws” together to lock. <Note> ・ Never make the contact area (metal) damaged or wasted with grease. ・ Do not touch the contact area (metal) with your fingers. GT-3 Series...
Page 329 Make the Main PCB Assy (5) slide to the left until the LAN Connector (10) is out of the Control Box. Rotate the right side of the Main PCB Assy to your side with your left hand and remove it from the Control Box. (10) (10) GT-3 Series...
Page 330 LAN connection. If the customer does not use LAN connection, follow the troubleshooting below; input the “0” to all. Execute GT-3 Maintenance in [Brother GT-3 Tools] and select [ IP Address Assignment ]. Assign all the settings as shown below and select [ Next ] to finish the assignment.
Page 331: Emc Filter
Remove the Cover DR (right side). (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Remove the Connector (1) that connects to the Speaker. Loosen the two screws (3) that fix the Speaker Holder (2) and remove the Speaker (4). Follow the reverse steps in reassembling. GT-3 Series...
Page 332: Power Unit
Pull out the Power Cover (1) to your side and lift it to remove. Remove the two connectors (3) that connect to the Power Unit. Remove the four screws (4) that fix the Power Unit. Remove the Power Unit. Follow the reverse steps in reassembling. GT-3 Series...
Page 333: Surge Absorber Pcb Assy
Remove the two Connectors (2) that connect to Surge Absorber PCB Assy (1). Remove the two screws (3) that fix the Surge Absorber PCB Assy (1). Remove the one screw (4) that connects the Ground Wire (green/yellow) from the PCB. Disconnect and remove the Surge Absorber PCB Assy. Follow the reverse steps in reassembling. GT-3 Series...
Page 334: Control Box Assy
Remove the one Connector (1) and the two Faston Terminals (2). Remove the two screws (3) that connect the Ground Wire (green/yellow). Loosen the one screw (5) on the Harness (AC Power) cover (4) of the primary side and the remove the Cover (4). GT-3 Series...
Page 335 Refer to the page “How to connect/disconnect the FFC Connector” in “6-2-18. Replacing the Carriage PCB Assy” when you handle FFC Connectors. Remove the one Connector (9) that connects to the Maintenance PCB Assy. Remove the two Cord Clamps (10) and disconnect the Harness. (10) GT-3 Series...
Page 336 Remove the Panel Upper Cover (14). (Refer to the (1) in “6-2-14. Panel PCB Assy”) Remove the one Connector (15) that connects the Panel PCB Assy. Remove the one Connector (16) that connects the USB Host PCB Assy. (14) (15) (16) GT-3 Series...
Page 337 10. Remove the Connector (18) that connects to the Exhaust Fan (17). (17) (18) 11. Remove the Connector (20) that connects the Carriage Motor (19). (19) (20) 12. Remove the Connector for Flap Sensor (21) and the Connector for the Flap Solenoid (22). (21) (22) GT-3 Series...
Page 338 15. Rotate the Control box by 90 degrees, the right side of the Control Box to backward, and the left side to front side, and then remove the Box. Pay attention not to get damaged to those Harnesses. 16. Follow the reverse steps in reassembling. GT-3 Series...
Page 339: Panel Body Assy
Remove the twelve Screws (2) that fix the Cover PF (1). Pull out the Cover PF slowly to your side. Remove the four Bolt Sockets (3) on the both sides of the Panel Body Assy with the Hexagonal wrench. GT-3 Series...
Page 340 Remove the one connector (6) and the two Faston Terminals (7) connected in the Control Box Assy. Remove the two Screws (8) that fix the Ground Wires. Remove the Cover (9) by loosing the Screw (10). (10) (10) Remove the Panel Body Assy. Follow the reverse steps in reassembling. GT-3 Series...
Page 341: Panel Pcb Assy
Rotate the Print Button (1) counterclockwise with pushing to remove the green part. Loosen the two Screws (2) on the both side of the Panel Body Assy. Remove the two Screws (3) at the bottom of the Panel Body Assy. GT-3 Series...
Page 342 Hold the both ends to unlock the lock in disconnecting the FFC (CN4) Remove the four screws with the white collars together that fix the Panel PCB Assy (5). Replace the Panel PCB Assy (5) to the new one. 10. Follow the reverse steps in reassembling. GT-3 Series...
Page 343: Usb Host Pcb Assy
Remove the plastic Panel Upper Cover (4) on the top of the Panel Body Assy. (Refer to “6-2-14. Panel PCB Assy”.) Remove the one Connector (2) and remove the two screws that fix the PCB. Remove the USB Host PCB Assy (1). Follow the reverse steps in reassembling. GT-3 Series...
Page 344: Encoder Pcb Assy
Loosen the four Screws (2) on the Encoder Cover F (3) by pulling out to your side. Remove the Harness: Encoder (6) from the Connector (5) on the Encoder PCB Assy (4), and then remove the two Screws (7). Remove the Encoder PCB Assy (4). Follow the reverse steps in reassembling. GT-3 Series...
Page 345: Maintenance Pcb Assy
Disconnect the AC Cord and remove the Cover PB and Cover DB. (Refer to “6-2-12. Control Box Assy”.) Maintenance PCB Assy Remove the seven connectors on the Maintenance PCB. Remove the PCB from the four Supports, 6NS (plastic spacer). CN12 CN11 Follow the reverse steps in reassembling. GT-3 Series...
Page 346: Carriage Pcb Assy
Remove the two Fixing Tubes (2) and remove the Carriage PCB Upper Cover (3) Disconnect all the FFCs (4) that connect to the Carriage PCB. <Note>The FFCs (5) in blue frame are not available, depending on the models. GT-3 Series...
Page 347 ・ Make sure that the contact (metal side) of the FFC should be clean and safe, free of grease and damage. ・ Do not touch the contact (metal side) with your fingers. Remove the four Screws (7) that fix the Carriage PCB Assy. Remove the Carriage PCB Assy. Follow the reverse steps in reassembling. GT-3 Series...
Page 348: Ink Sensor Pcb Assy
Disconnect the Harness: Ink Sensor (5) from the Connector (4) on the Ink Sensor PCB Assy (3). Remove the one Screw (6) that fixes the PCB. Remove the Ink Sensor PCB Assy (3). Follow the reverse steps in reassembling. GT-3 Series...
Page 349: Ink Switch Pcb Assy
Remove the Cover Cartridge. (Refer to “6-2-19. Ink Sensor PCB Assy”.） Remove the six Screws (1) that fix the Tube Clamp. Remove all the nine Connectors (4) on the Ink Switch PCB Assy (3). Ink Switch 1 Bracket GT-3 Series...
Page 350 Move the Ink Switch 1 Bracket (6) along with the Tubes, with the Ink Switch PCB Assy mounted, and remove it after it is above the Cartridges. Disassemble the Ink Switch PCB Assy by removing the six Screws (7) that fix the Ink Switch PCB Assy. Follow the reverse steps in reassembling. GT-3 Series...
Page 351: Lithium Battery
Remove the Cover DR (right side). (Refer to “6-1-2. Assembling/Disassembling of the Covers”.) Remove the Lithium Battery (1) by pulling out the holder in the direction of the arrow. Pickup the Lithium Battery (1) to the direction of the arrow. Follow the reverse steps in reassembling. GT-3 Series...
Page 352: Ffc
Remove the two FFC Connectors (4) that are connected to Carriage PCB Assy. Remove the FFC Cable by removing all the nine Clamps (5) for fixing the FFC. <Note> Refer to the page “How to connect/disconnect the FFC Connector” in “6-2-18. Carriage PCB Assy” when you handle FFC Connectors. GT-3 Series...
Page 353 3. Fold the FFC not to give too much tension to Connectors. 1. Connect the FFC Connectors to CN9 and CN23 on the Main PCB. 2. The Length of FFC until folding ) position : 210 mm : 260 mm GT-3 Series...
Page 354 8. Connect the FFC to the CN6 and CN8 on the Carriage PCB. Mount the Exhaust fan with four Screws and connect the Connecter if it is removed for smooth operation. Follow the reverse steps in reassembling. GT-3 Series...
Page 355: Transporting The Gt-3 Series / Required Maintenance For Long-Term Storage
7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage 7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage This chapter describes the measures required before transportation, moving the printer to another location, and the maintenance required for long-term storage.
Page 356 7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage Tube Cleaning (Firmware Version 2.10 or higher) Execute the flushing ink and cleaning Tubes by the sequence of the Tube Cleaning. After you clean all the Tubes, turn OFF the printer and confirm if the inside of the Tubes, especially the short Tubes between the Filters and Print Heads.
Page 357 7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage Turn ON the printer and move the Platen to the inside of the printer with Platen Button. Select [ Maintenance ] > [ Head Replacement ] of the menu, select any Print Head and press the OK Button.
Page 358 * Be careful in crating; pack the printer in proper way. No stress to the covers or they may be seriously damaged in transportation. * Refer to "2. Setting up GT-3 Series", and arrange all the settings done by specified technicians. GT-3 Series...
Page 359: Storage
7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage 7-2. Required Maintenance for the Long Storage There are two types of storage: “A. Only Color Ink is printed with GT-381/GT-361” and “B. In case you do not run the printer at all” and each requires different maintenance.
Page 360 7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage A. Only Color Ink is printed with GT-381/GT-361 Preparation before storage Execute White Tube Cleaning; select [ All Whites ] to retrieve White Ink. Refer to “4-1-4. Cleaning the Tubes and Print Heads (white/Color Tube Cleaning)”...
Page 361 7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage B. In case you do not run the printer at all Preparation before storage Execute White Tube Cleaning; select [ All Whites ] to retrieve White Ink. Refer to “4-1-4. Cleaning the Tubes and Print Heads (white/Color Tube Cleaning)”...
Page 362 7. Transporting the GT-3 Series / Required Maintenance for Long-term Storage C. Restart after 2 weeks’ storage Insert the well-agitated White Ink Cartridges by replacing from either Capping Cartridges or ‘almost empty but not expired’ White Ink Cartridges. If the Tubes are filled with Maintenance Solution with no air inside, then install the White Ink by referring to the steps in “4-1-4.
Page 363: Error Code List
Head is increasing. W3 Head Temp Temperature of White-3 Print 1036 Rising Head is increasing. W4 Head Temp Temperature of White-4 Print 1037 Rising Head is increasing. 1051 CR Motor Life The Carriage Motor is worn. Replace the Carriage Motor. GT-3 Series...
Page 364 K/C Filter needs to be Replace with the new K/C Filter on the C Print Head. replaced. 1223 Exchange Filter Y M/Y Filter needs to be Replace with the new M/Y Filter on the Y Print Head. replaced. GT-3 Series...
Page 365: Error Messages
Host PCB Assy and Main PCB. Check the free space of the USB flash drive with The USB flash drive does not have 2101 Not Enough Area enough area for saving. Mount a USB flash drive with free area available. GT-3 Series...
Page 366 GT-361 received the print data Confirm that the Machine Mode is GT-361 by PC Data Error (381 with 4 White Print Head data Printer Driver. GT-361 cannot receive the print data 3101 mode) included. with four White Print Head data included. GT-3 Series...
Page 367 Confirm the proper file is saved in the USB flash drive. Confirm the file format or extension (ar3). 4110 No Files No file is found. Copy the print data to the USB flash drive. Remake the print data on PC. GT-3 Series...
Page 368 5101 Machine Error Illegal print area of the print data Replace the Main PCB. Turn OFF and ON the printer. 5102 Machine Error Failure of unfolding print data The issue is in firmware; contact Brother via your dealer. GT-3 Series...
Page 369 Main PCB COM between Main PCB and Maintenance PCB. 5301 Turn OFF and ON the printer. Machine Error Illegal maintenance sequence The issue is in firmware; contact Brother via your 5302 dealer. W1 Ink Sensor malfunction 5311 W2 Ink Sensor malfunction...
Page 370 5478 Turn OFF and ON the printer. 5491 Machine Error Internal Error of Maintenance Unit The issue is in firmware; contact Brother via your dealer. Confirm the motions of Solenoid Jam Assy, the Clearance Sensor 6004 Malfunction of Clearance Sensor Sensor Flap Dog and Photo Interrupter.
Page 371 Fail: Panel Button malfunctioning. In initialization: confirm the connection of the Head Detection Memory and turn OFF and ON the printer. The issue is in firmware; contact Brother via your dealer. In operation: this may occur by other malfunction. 6040...
Page 372 6124 Print Head sink is cool enough, or just after setup. Abnormal temperature of 6125 White-2Print Head Abnormal temperature of White-3 6126 Print Head Abnormal temperature of White-4 6127 Print Head GT-3 Series...
Page 373 PCB and Main PCB. Replace the Carriage PCB. 7000 Machine Error System Call error Reboot the printer. The issue is in firmware; contact Brother via your dealer. 7013 Machine Error General Program Error Print Data not received with no 7014...
Page 374: Block Diagram Of The Control Circuit
CN1(10p) GT3 SOLENOID W3 ASSY SB2849 BACK LIGHT MODULE ALFB LG6550 GT3 SOLENOID W4 ASSY SB2850 LCD:TSE2G0230 GT3 SOLENOID VENT ASSY A62027 CN2(4p) SB2851 SWITCH:HW1 L-M410Q4G GT3 SOLENOID W_RET ASSY SB2400 SB2852 HARNESS:PRINT SWITCH SB2395 FRONT SIDE CN1(4p) GT-3 Series...

Brother GT-3 Series Service Manual

1 About GT-3 Series

2 Setting up GT-3 Series

3 Operation

4 Solving Print Quality Problems

5 Regular Maintenance

6 Replacing Parts

Ink Retrieval Unit (GT-381/GT-361 Only)

7 Transporting the GT-3 Series / Required Maintenance for Long-Term Storage

8 Error Code List

9 Block Diagram of the Control Circuit

Quick Links

Service Manual

Related Manuals for Brother GT-3 Series

Summary of Contents for Brother GT-3 Series

Table of Contents