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Brother HL HL-1060 Service Manual
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Brother HL HL-1060 Service Manual

Brother HL HL-1060 Service Manual

Brother laser printer service manual
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LASER PRINTER

SERVICE MANUAL

MODEL:HL-1060

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Summary of Contents for Brother HL HL-1060

  • Page 1: Service Manual

    LASER PRINTER SERVICE MANUAL MODEL:HL-1060...
  • Page 2 Specifications are subject to change without notice. Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd. Apple,the Apple Logo,and Macintosh are trademarks,registered in the United States and other countries,and True Type is a trademark of Apple computer, Inc.
  • Page 3 This service manual contains basic information required for after-sales service of the laser printer (here- in-after referred to as "this machine" or "the printer"). This information is vital to the service technician to maintain the high printing quality and performance of the printer.

  • Page 4: Table Of Contents

    CHAPTER I FEATURES AND SPECIFICATIONS ...I-1 1. FEATURES ...I-1 2. SPECIFICATIONS ...I-3 Printing... I-3 Functions ... I-3 Electrical and Mechanical ... I-4 Paper Specification... I-5 Print Delivery ... I-6 Paper ... I-6 Effective Printing Area ... I-7 3. SAFETY INFORMATION ...I-9 Laser Safety (110 - 120V Model only) ...
  • Page 5 Sensors... II-19 2.3.1 Cover Sensor ... II-19 2.3.2 Toner Empty Sensor ... II-19 Drum Unit... II-20 2.4.1 Photosensitive Drum ... II-20 2.4.2 Primary Charger ... II-20 2.4.3 Developer Roller... II-20 2.4.4 Transfer Roller... II-20 2.4.5 Cleaner Roller... II-20 2.4.6 Erase Lamp ... II-20 Print Process ...
  • Page 6 CHAPTER IV MAINTENANCE AND TROUBLESHOOTING... IV-1 1. INTRODUCTION... IV-1 Initial Check ...IV-1 Basic Procedure ...IV-2 2. CONSUMABLE PARTS ... IV-2 Drum Unit...IV-2 Toner Cartridge...IV-2 Periodical Replacement Parts ...IV-3 3. IMAGE DEFECTS ... IV-4 Image Defect Examples...IV-4 Troubleshooting Image Defects...IV-5 Location of High-voltage Contacts and Grounding Contacts...IV-19 Location of Feed Roller Shaft and Grounding Contacts ...IV-20 4.

  • Page 7: Chapter Ifeatures And Specifications

    Sleep Mode (Power Save Mode): Sleep mode automatically reduces power consumption when the printer is not in use. The printer consumes less than 13W when in sleep mode. ® Windows 3.1 and Windows 95 are available on the floppy...
  • Page 8 When you operate your computer in the DOS (Disk Operating System) environment, this program allows you to easily change the default settings of the printer such as fonts, page setup, emulations and so on.

  • Page 9: Specifications

    8,000 pages at 1 page per job IDT 79R3041-20J 20mhz Automatic emulation selection among HP LaserJet 5P, EPSON FX-850, and IBM Proprinter XL BR-Script (option) Windows 95/Windows 3.1 driver, supporting Brother Native Compression mode and bi-directional capability Optional Macintosh QuickDraw driver (Standard in some ® countries) Bi-directional parallel interface (IEEE 1284 compatible) A RS-422A/RS-232C serial interface is optionally available.

  • Page 10: Electrical And Mechanical

    Electrical and Mechanical Power source Power consumption Noise Temperature Humidity Dimensions (W x D x H) Weight U.S.A. and Canada: AC 110 to 120V, 60Hz Europe and Australia: AC 220 to 240V, 50Hz/60Hz Printing: 280W or less Standing by: 60W or less Sleep: 13W or less Printing:...

  • Page 11: Paper Specification

    Paper Specification Multi-purpose sheet feeder loading < Sheet Feeder 1 (Front)> Paper size: A4, Letter, Legal, B5, A5, A6, and Executive, and other sizes of media that can be handled by the feed mechanism, can be loaded. Feedable paper weight: 60 (16lb.) to 157 (42lb.) g/m Maximum load height : Envelopes : Setting method:...

  • Page 12: Print Delivery

    Print Delivery With the output tray opened Tray capacity : Maximum 100 sheets (80g/m With the output tray closed Tray capacity : 1 sheet (80g/m Note: Face down: Environment : 23°C Paper Types of paper <Sheet Feeder 1 (Front)> Normal paper (60 to 157g/m •...

  • Page 13: Effective Printing Area

    Paper feed conditions Type Normal paper (cut sheet) Special paper (cut sheet) Effective Printing Area Printable area The effective printing area means the area within which the printing of all the data received without any omissions can be guaranteed. Name 60 to 80 g/m 80 g/m paper (Legal)
  • Page 14 The table below shows the effective printing areas. Size 210.0mm 8.27” (2,480 dots) 215.9mm Letter 8.5” (2,550 dots) 215.9mm Legal 8.5” (2,550 dots) 182.0mm B 5 (JIS) 7.16” (2,149 dots) 176.0mm B 5 (ISO) 6.93” (2,078 dots) 184.15mm Executive 7.25” (2,175 dots) 148.5mm 5.85”...

  • Page 15: Safety Information

    SAFETY INFORMATION Laser Safety (110 - 120V Model only) This printer is certified as a Class 1 laser product under the US Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser radiation.

  • Page 16: Caution For Laser Product

    Caution for Laser Product (Warnhinweis für Laserdrucker) CAUTION: When the machine during servicing is operated with the cover open, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. CAUTION: In case of any trouble with the laser unit, please replace the laser unit itself. To prevent direct exposure to the laser beam, do not try to open the enclosure of the laser unit.

  • Page 17: Chapter Ii Theory Of Operation

    CHAPTER II THEORY OF OPERATION ELECTRONICS General Block Diagram Fig. 2.1 shows a general block diagram of the HL-1060 printer. Optional ROM (Max. 4Mbytes) Control System Expansion ROM I/O Laser Scanner Unit Drum Unit Developing Block Charging Image Generation System...

  • Page 18: Main Pcb Block Diagram

    Main PCB Block Diagram Fig. 2.2 shows the block diagram of the main PCB. Reset Circuit Program + Font ROM (4Mbytes) Optional ROM (Max. 4Mbytes) (2Mbytes) Option RAM (SIMM) (Max. 32Mbytes) Option Serial I/O (RS232C & RS422A) EEPROM (512 x 8bits) Motor Driver CPU Core R3041...

  • Page 19: Main Pcb

    Main PCB 1.3.1 CPU Core Fig. 2.3. shows the CPU circuit block on the main PCB. The CPU is an IDT 79R3041-20J which is driven at a clock frequency of 20MHz. This clock frequency is made by dividing the source clock frequency of 40.0MHz by two. The address and data bus are both 32bits consisting of AD0 to AD31.

  • Page 20: Asic

    1.3.2 ASIC The ASIC is composed of a Cell Based IC that contains the following functional blocks. Oscillator circuit Generates the main clock for the CPU by dividing the source clock frequency by two. Address Generator Generates the address bus by latching the AD bus with the ALE signal. Address decoder Generates the CS signal for each device.
  • Page 21 Parallel I/O <Data receive Mode> There are two modes in this unit. One is the CPU receive mode and the other is the DMA receive mode. In the CPU receive mode the CPU receives the command data from the PC, and after the CPU is switched to the DMA mode, it receives the image data and writes it to the DRAM directly.
  • Page 22 (12) Engine control I/O This I/O is used for the connection to the driver PCB. It controls the main motor, solenoid, sensors, etc. Fig. 2.4 CHAPTER II -6...

  • Page 23: Rom

    1.3.3 The program and the font data are stored in 4Mbytes of ROM. The ROM is composed of two 16Mbit masked ROMs which are mounted in 42-pin IC sockets. 1.3.4 Optional ROM The program and the font data are stored in 4Mbytes of ROM. The ROM is composed of two 16Mbit masked ROMs which are mounted in 42-pin IC sockets.

  • Page 24: Dram

    1.3.5 DRAM Four 4Mbit DRAM (x 8bit) are used as the printer memory. Fig. 2.7 CHAPTER II -8...

  • Page 25: Optional Ram

    1.3.6 Optional RAM A 32bit SIMM (72 pin) can be fitted as optional RAM. The main PCB has one slot and its capacity is for SIMM from 1Mbytes to 32Mbytes. Fig. 2.8 CHAPTER II -9...

  • Page 26: Optional Serial I/O

    1.3.7 Optional Serial I/O The interrupt of the serial I/O is input to the EXINT terminal of the ASIC, and recognized by the CPU. A 32-byte space for a register is provided for this I/O, which is read and written to by the CPU.

  • Page 27: Reset Circuit

    1.3.9 Reset Circuit The reset IC is a PST591DMT. The reset voltage is 4.2V (typ.) and the LOW period of the reset signal is 50ms (typ.). 1.3.10 Parallel I/O Fig. 2.12 shows the parallel interface circuit. Fig. 2.11 Fig. 2.12 CHAPTER II -11...

  • Page 28: Engine I/O

    1.3.11 Engine I/O Fig. 2.13 shows the engine interface circuit. Fig. 2.13 CHAPTER II -12...

  • Page 29: Paper Feed Motor Drive Circuit

    1.3.12 Paper Feed Motor Drive Circuit A DC motor is used for paper feeding. Driver PCB The following parts are mounted on the driver PCB. • Connectors ...Low-voltage, high-voltage, solenoid, main motor, toner sensor, • Registration sensor SW Panel PCB The following parts are mounted on the SW panel PCB.

  • Page 30: Power Supply

    Power Supply 1.6.1 Low-voltage Power Supply The power supply uses a switching regulation system to generate the regulated DC power (+5V and +24V), which are converted from the AC line. Fuse Line Filter Lightning Surge Heater Absorber Circuit Fuse Rectifier Oscillator Regulation Circuit...

  • Page 31: High-Voltage Power Supply, Sr Pcb

    1.6.2 High-voltage Power Supply, SR PCB This generates and outputs the voltages and currents for the charging, development and transfer functions. IC PROTECTOR IP001 Current 24VI Regulator T101 Voltage Regulator VR201 VR202 Current Regulator T601 Q602 Voltage Regulator T701 Q702 PAPER SENSOR Voltage...

  • Page 32: Mechanics

    MECHANICS Overview of Printing Mechanism MP Feeder 2 cover Multi-purpose Sheet Feeder 2 Papers Hopper Plate Pinch Roller Paper Pick-up Roller Paper Feed Roller Registration Sensor Lever Polygon Mirror Main Cotrol PCB Papers Multi-purpose Sheet Feeder 1 Manual Paper Path MP Feeder 1 Cover Hopper Plate...

  • Page 33: Paper Transfer

    Paper Transfer 2.2.1 Paper Supply The pick-up roller picks up one sheet of paper from the paper feeder every time it is rotated and feeds it to the paper feed roller. Hopper plate The paper is gripped between the pick-up roller and the separation pad and separated into individual sheets.

  • Page 34: Paper Eject

    2.2.3 Paper Eject The completion of paper eject is detected in the following manner: When the leading edge of the paper pushes down the eject sensor actuator located in the fixing unit, the photo sensor (photo interrupter) is opened and detects the start of paper eject.

  • Page 35: Sensors

    Sensors 2.3.1 Cover Sensor Detects opening and closing of the top cover. Top Cover 2.3.2 Toner Empty Sensor Detects if there is toner in the toner cartridge. It also detects whether or not the drum unit is installed. (The toner cartridge is installed in the drum unit). Toner Empty Sensor Cover Switch...

  • Page 36: Drum Unit

    The primary charge uses a corona wire, but since the drum is positively charged, only less than 1/10 of the usual quantity of ozone is generated compared with the negatively charged drum. The level of ozone expelled from the printer is therefore not harmful to the human body. Applicable safety standards have been complied with.

  • Page 37: Exposure Stage

    2.5.2 Exposure Stage After the drum is positively charged, it is exposed to the light emitted from the laser unit. Laser detector Laser diode Lens The area exposed to the laser beam is the image to be printed. The surface potential of the exposed area is +1000 +700...

  • Page 38: Developing

    2.5.3 Developing Developing causes the toner to be attracted to the electrostatic image on the drum so as to transform it into a visible image. The developer consists of a non-magnetic toner. The development roller is made of conductive rubber and the supply roller which is also made of conductive sponge rotate against each other.

  • Page 39: 2.5.5 Drum Cleaning Stage

    2.5.5 Drum Cleaning Stage In the image transfer stage, not all the toner on the photosensitive drum is transferred onto the paper but some remains on the drum. In the drum cleaning stage, the drum surface is cleaned by the cleaning roller, so that residual toner on the drum surface is removed and collected on the cleaning roller itself.

  • Page 40: Chapter Iii Disassembly And Reassembly

    Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. Be careful not to lose screws, washers, or other parts removed. Be sure to apply grease to the gears and applicable positions specified in this chapter.

  • Page 41: Disassembly Flow

    DISASSEMBLY FLOW III-2...

  • Page 42: Disassembly Procedure

    DISASSEMBLY PROCEDURE Drum Unit Open the top cover. Lift out the drum unit. Main cover Output Tray ASSY Press the hinges at the left and right ends of the output tray inwards to release the output tray from the main cover. Main cover Drum unit Fig.

  • Page 43: Top Cover

    Top Cover Open the top cover. Press the hinges at the left and right ends of the top cover inwards to release the top cover from the main cover. Note: If it is impossible to release the top cover in the above way, press the side of the top cover ( Main cover MP Sheet Feeder 1 ASSY...
  • Page 44 Raise the pick-up roller cover ( Remove the MP feeder cover ( MP feeder cover Remove the tray side covers R and L by releasing the three hooks inside each of the covers as the following order. Top side cover L ) and remove it ( Pick-up roller cover...
  • Page 45 After removing the sector gear, paper feed bearing, and bearing 6, take off the paper pick-up roller unit. Paper feed bearing Sector gear Raise the pressure plate toward you and press both sides of the pad inward to release it by pressing the separation pad holder. Then take off the spring. Note: If it is impossible to release the pressure plate in the above way, press the side of the pressure plate (...

  • Page 46: Mp Sheet Feeder 2 Assy

    MP Sheet Feeder 2 ASSY Remove the four screws. Disassemble any other parts of MP sheet feeder 2 in the same way as described for MP sheet feeder 1. Screws Main cover Under Shoot ASSY Disconnect the two cable harnesses from the relay PCB. MP sheet feeder 2 Fig.
  • Page 47 Remove the two screws. Lift the rear portion of the under shoot assy to remove it. Main cover Note: Follow the number above in order when assembling. Under shoot ASSY Fig. 3.11 Feed shaft roller Plate spring Fig. 3.11.1 III-8...

  • Page 48: Sr Pcb / Relay Pcb

    SR PCB / Relay PCB Remove the SR protect sheet. Disconnect the connector of the SR harness ASSY connecting the SR PCB and the driver PCB and remove the high-voltage cover. SR protect sheet Main cover Disconnect the connector of the relay harness ASSY connecting the SR PCB and the relay PCB and remove the two screws on the SR PCB, and remove the SR PCB.

  • Page 49: Fixing Unit

    Fixing Unit Remove the two screws. Lifting the fixing unit, disconnect the two heater harnesses and the thermistor connector on the EL PCB. Fixing unit Screws Thermistor connector Unhook the harness of the thermistor ASSY from the hook of the fixing unit. Remove the screw.
  • Page 50 Note: Follow instructions below when installing the thermistor in the fixing unit. • Place the cleaner felt of the cleaner ASSY under the heat roller. • Place the end of the thermistor on the heat roller. • Insert the boss1 of the thermistor into the hole of the fixing unit frame. •...
  • Page 51 Release the cleaner lock from the cleaner ASSY HR. (10) Remove the cleaner ASSY HR from the fixing unit. Cleaner ASSY HR Screw (11) Release the right side of the paper eject roller shaft. (12) Remove the four eject pinch rollers and the pinch springs from the fixing unit frame.
  • Page 52 Note: Follow instructions below when installing the cleaner ASSY HR. • Put the cleaner ASSY HR on the heat roller. • Rotate the hook of the cleaner ASSY HR as shown in the figure to fit it into the fixing unit frame. •...

  • Page 53: Scanner Unit

    Scanner Unit Remove the three screws. Lift out the scanner unit. Screw Scanner unit Main cover Disconnect the three connectors from the driver PCB. Remove the screw and the tape, and lift the toner sensor PCB from the scanner unit. Note: Never touch the inside of the scanner unit or the mirror when disassembling or reassembling.

  • Page 54: Main Pcb Assy

    Turn the scanner unit upside down and remove the screw to release the toner sensor harness. Scanner unit 3.10 Main PCB ASSY Remove the four screws. Hold the hooks at left and right to pull out the main PCB ASSY. Screw Hook Screws...

  • Page 55: Base Plate Assy

    3.11 Base Plate ASSY Note: Prior to turning the printer upside-down, ensure that the drum unit has been removed from the printer. Turn the printer upside down. Remove the five M4 and four M3 self tapping screws and one screw.

  • Page 56: Driver Pcb Assy

    Note: See the Fig. 3.26 about the position installing the dumping material and the soundproof sponge A,B. <The inside of the base plate> Dumping material 3.12 Driver PCB ASSY Remove the screw securing the driver PCB ASSY. (Slide the PCB A from underneath the main shield.) Screw Driver PCB ASSY...

  • Page 57: Low-Voltage Power Supply Pcb Assy

    Disconnect the eleven connectors from the PCB. (Three connectors have already been disconnected when removing the scanner unit.) Driver PCB ASSY Main frame Note 1: When reassembling, the cable connectors must be inserted securely into the PCB connectors and the PCB must not be stressed by the harnesses. Note 2: The connectors should be inserted by matching the housing color and the number of pins.

  • Page 58: High-Voltage Power Supply Pcb Assy

    3.14 High-voltage Power Supply PCB ASSY Remove the screw securing the high-voltage power supply PCB ASSY. Disconnect the HV flat cable from the PCB. Screw Density dial Note: When reassembling, the flat side of the density dial shaft must be aligned with the flat side of the density dial plastic adjustment cover.

  • Page 59: Drive Unit

    Remove the two screws securing the fan motor. SW panel PCB Fan motor holder 3.16 Drive Unit Unhook the heater harness from the drive unit. Hook Fan motor Fig. 3.32 Heater harness Fig. 3.33 III-20 Screws Drive unit...

  • Page 60: Main Motor Assy

    Release the hook to remove the gear cover. Remove the six screws securing the drive unit. Lift the drive unit while pressing and releasing the static removal plate spring on the drive unit. Screws 3.17 Main Motor ASSY Remove the four screws securing the main motor ASSY. Screws Gear cover Screws...

  • Page 61: Gears And Solenoid

    3.18 Gears and Solenoid Apply grease to the points shown below. Fig. 3.36 III-22...
  • Page 62 Note: Follow instructions below when applying the grease. Sign When applying the grease Before installing the gear. After installing the bending washer, and before installing the gear. Before installing the gear. After installing the drive unit on main body. After installing the drive unit on main body.

  • Page 63: Paper Support

    3.19 Paper Support Pull the paper support down toward you and pull both legs outwards to release it. MP sheet feeder 1,2 3.20 Extension Support Wire Raise the extension support wire toward you, press both legs inward to release it, and then release the paper stopper from the wire.

  • Page 64: Packing

    PACKING Documents Carton, SF assy Dust cover PE sheet Carton Fig. 3.39 III-25...

  • Page 65: Chapter Iv Maintenance And Troubleshooting

    • The printer is not located in a dusty place. • The printer is not exposed to ammonia fumes or other harmful gases. • The printer is not located in a hot or humid area (such as near water or a humidifier).

  • Page 66: Basic Procedure

    If condensation has occurred, wipe the effected units or parts with a dry cloth. If the drum unit is unpacked soon after it is moved from a cold room to a warm room, condensation may occur inside the unit, which may cause incorrect images. Instruct the user to allow the unit to come to room temperature before unpacking it.

  • Page 67: Periodical Replacement Parts

    Periodical Replacement Parts Description Fixing Unit Y (Cleaner ASSY HR) Fixing Unit Y (Cleaner ASSY HR) Scanner Unit Y MP sheet feeder 1 ASSY Y (P pick-up roller shaft ASSY Y) MP sheet feeder 2 ASSY Y (P pick-up roller shaft ASSY Y) Note: The above table shows only estimated value, so these values are subject to change without prior notice.

  • Page 68: Image Defects

    IMAGE DEFECTS Image Defect Examples I-1 Light I-5 Dirt on back of paper I-8 Black vertical streaks I-12 Image distortion I-17 Gray background I-16 Black band I-20 Horizontal lines I-2 Dark I-2 Dark I-3 Completely blank I-6 Black vertical I-6 Black vertical streaks streaks I-10 Faulty...

  • Page 69: Troubleshooting Image Defects

    The wiper of the toner cartridge is defective. Replace the toner cartridge. Clean contact electrodes both in the printer body and on the drum unit. If the connection is normal, replace the high-voltage power supply PCB. Replace the driver PCB or the main PCB.
  • Page 70 Corona failure Is the corona wire dirty? (soiled wire) Corona failure Are the corona electrodes (contact failure) between the printer body and drum unit dirty? Drum unit failure Is the problem solved when the drum unit is replaced? H.V. power...
  • Page 71 Drum unit Are the drum shaft and drum electrode of the printer body connected correctly? Drum unit failure Is the problem solved after the drum unit is replaced? Scanner harness...
  • Page 72 Step Corona failure Is the corona wire of the drum unit broken? Are the electric terminal springs in the printer body and the electrode on the bottom face of the drum unit dirty? Harness Is the scanner unit connected connection with the driver PCB correctly? H.V.
  • Page 73 Dirt on the back of paper Possible cause Step Fixing unit Is the pressure roller dirty? Is any other area in the printer dirty? Dirt in the drum Is the transfer roller dirty? unit is the problem solved after the...
  • Page 74 Black vertical streaks Possible cause Step Corona failure Is the corona wire dirty? Corona failure Is the vertical block streak about 10mm wide? Is the corona wire cleaner not in its home position? Dirt in the paper Is the paper tray or feed system feed system on the drum unit soiled with toner?
  • Page 75 Black vertical streaks (in the gray background) Possible cause Step Translucent Are there any stains? stain on the scanner window White vertical streaks Possible cause Step Scanner window Is the scanner window dirty? dirty Transfer failure Is the transfer roller scratched? I-10 Faulty registration Possible cause...
  • Page 76 I-11 Poor fixing Possible cause Step Printing paper Is thick paper more than 36lb weight in use? Toner sensing Is the problem solved by failure replacing the drum unit or the toner cartridge? (When printing is faint.) Thermistor Is the thermistor fitted failure correctly? Low-voltage...
  • Page 77 Check Result Check Result CHAPTER IV -13 Remedy Place the printer on a flat surface. Remove and shake the drum unit horizontally with care. Clean the scanner window with a dry tissue. Replace the scanner unit. Remedy Shake the drum unit horizontally.
  • Page 78 I-15 Black spots Possible cause Step Drum unit Are the spots at 94mm intervals? The problem is not solved after printing a few pages. Fixing unit Are the spots at 63mm intervals? And the problem is not solved after printing a few pages. SR PCB Is the problem solved after the SR PCB replaced?
  • Page 79 (3) Wipe the surface of the photosensitive drum with a cotton swab until the dust or paper powder on the surface toner lamp comes off. Paper path Separator Cleaning roller Toner cartridge Photo sensitive drum Fig. 4.4 Caution: Don't wipe the surface of the photosensitive drum with something sharp. (ball- point pen etc.) Use the cleaning liquid which is mixed ethyl alcohol and pure water at the rate of each 50%.
  • Page 80 I-16 Black bank Possible cause Step Drum unit Is the wire cleaner positioned at its home position? I-17 Gray background Possible cause Step Density dial Is the problem corrected by adjusting the density dial? Print paper Does the paper being used meet the paper specification (weight, etc.).
  • Page 81 I-18 Hollow print Possible cause Step Print paper Is thick paper of more than 42lb being used or extremely rough surface paper? I-19 Downward fogging of solid black Possible cause Step Drum unit Is the problem solved after replacing the drum unit? SR PCB Is the problem solved after replacing the SR PCB?
  • Page 82 Check Result Make the printer in the light rain test mode as follows before checking; 1. Turn on the power switch and open the top cover. 2. Hold down the panel switch until all the lamps are on, and then release the switch.

  • Page 83: Location Of High-Voltage Contacts And Grounding Contacts

    Location of High-voltage Contacts and Grounding Contacts Grounding contacts Grounding wire Drum shaft For supply roller For supply roller Grounding wire For drum For drum For transfer roller Drum unit For cleaning roller For grid Fig. 4.5 To SR PCB For cleaning For development roller...

  • Page 84: Location Of Feed Roller Shaft And Grounding Contacts

    Location of Feed Roller Shaft and Grounding Contacts Feed shaft roller For feed roller Fig. 4.7 CHAPTER IV -20...

  • Page 85: Paper Jam

    2) Bug Note: How to make the sensors Open the cover. Power on the printer while pressing the panel switch. Release the panel switch. Press and release the panel switch. Results: *Alarm Lamp is ON = Paper feed sensor is turned ON...

  • Page 86: Troubleshooting Malfunctions

    TROUBLESHOOTING MALFUNCTIONS When carrying out countermeasures for malfunctions as described in this section, check connectors for contact failure before measuring the voltage at the specified connector pins. No AC power supplied Possible cause Step Supply voltage Is the correct voltage present at the outlet? Power plug Is the power cord securely...
  • Page 87 Main motor unrotated Possible cause Step Failure of Is the connection of connector connector P12 on the driver PCB correct? Main motor (M1) Disconnect connector P12 from the driver PCB. Measure the resistance between the connector pins of the main motor by using a circuit tester.
  • Page 88 Insufficient output from high-voltage power supply unit Possible cause Step High-voltage Do any of the terminals on the contact high-voltage contacts have dirt or contact burns? Check the connection of the harness between the high- voltage power supply and the driver PCB is OK.
  • Page 89 BD failure Possible cause Step Harness Is connector P4 on the driver connection PCB secured correctly? failure Scanner failure Possible cause Step Harness Is the connection of the connection scanner motor connector P2 on failure the driver PCB secured? Power supply Is the voltage between pins 1 input (+24VDC) and 2 (GND) of...
  • Page 90 Double feeding Possible cause Step Paper Is paper of a recommended type being used? Separation pad Is the surface of the separation pad worn out? Wrinkles Possible cause Step Paper Is paper of a recommended type being used? Is the wrinkle problem solved if new paper is used? Fixing unit Is the entrance guide dirty?

  • Page 91: Inspection Mode

    Details of the factory inspection mode are as follows. This mode is used to check if the sensors in the printer are functioning correctly. In the process of this inspection, the lamps and the switch on the control panel are also checked.
  • Page 92 Close the top cover. Check that the Ready lamp goes OFF. Press the control panel switch. If all the sensors are correct, the printer goes back to the Ready status. If any error is detected, the corresponding lamp stays ON. Paper eject sensor...

  • Page 93: Error Codes

    Error Codes In the event of a printer failure, error codes will be indicated as shown below. All the lamps and the specific lamps are turned ON alternately. The specific combination of lamps that are ON indicates the type of the error.

  • Page 94: Serial No. Descriptions

    The descriptions as below shows how to read labels on each place. < ID for production month > January February March April Printer ...on the main body Process unit ...on the package of the process unit Drum unit ...on the drum unit Toner cartridge ...on the toner cartridge SERIAL NO. DATE MONTH (X: OCT., Y: NOV., Z: DEC.)

  • Page 95: Connection Diagram

    Appendix 2. Connection Diagram V - 2...

  • Page 96: Main Pcb Circuit Diagram, (1/4)

    Appendix 3. Main PCB Circuit Diagram, (1/4) CODE UK3400000 B48K246CIR NAME V - 3...

  • Page 97: Main Pcb Circuit Diagram, (2/4)

    Appendix 4. Main PCB Circuit Diagram, (2/4) CODE UK3400000 B48K246CIR NAME V - 4...

  • Page 98: Main Pcb Circuit Diagram, (3/4)

    Appendix 5. Main PCB Circuit Diagram, (3/4) CODE UK3400000 B48K246CIR NAME V - 5...

  • Page 99: Main Pcb Circuit Diagram, (4/4)

    Appendix 6. Main PCB Circuit Diagram, (4/4) CODE UK3400000 B48K246CIR NAME V - 6...

  • Page 100: Driver Pcb Circuit Diagram

    Appendix 7. Driver PCB Circuit Diagram CODE UK3634000 B48K280CIR NAME V - 7...

  • Page 101: Switch Panel/Solenoid, Bin/Relay Pcb Circuit Diagram

    Appendix 8. Switch Panel / Solenoid, Bin / Relay PCB Circuit Diagram CODE UK3635000 NAME 281/282/283 CIR V - 8...
  • Page 102 Appendix 9. Low-voltage Power Supply PCB Circuit Diagram (110 - 120V) BEA1 C203 R203 C202 R204 R205 R206 D201 C306 R305 VR301 C101 R201 D104 R204 C301 C302 R301 R302 R113 R114 R304 C303 R110 V - 9 NTC1 R101 D110 R102 R103...

  • Page 103: Low-Voltage Power Supply Pcb Circuit Diagram (220 - 240V

    Appendix 10. Low-voltage Power Supply PCB Circuit Diagram (220 - 240V) BEA1 C203 R203 C202 R204 R205 R206 D201 C306 R305 VR301 C101 R201 D104 R204 C301 C302 R301 R302 R113 R114 R304 C303 R110 V - 10 NTC1 R101 D110 R102 R103...

  • Page 104: High-Voltage Power Supply Pcb Circuit Diagram

    Appendix 11. High-voltage Power Supply PCB Circuit Diagram IP001 R002 R001 R104 R105 R106 PC001 D102 D103 MC101 R225 R222 R101 R107 R108 R103 R110 ZD101 C201 R204 VR202 R209 R201 C202 R202 R203 R507 R504 D501 R501 R502 T101 R215 R216 ZD201...

  • Page 105: Sr Pcb Circuit Diagram

    Appendix 12. SR PCB Circuit Diagram CODE UK3653000 B48K284CIR NAME V - 12...

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