Table of Contents
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19" LCD Color Monitor
Service
Service
Service
Table Of Contents......................................................1
Revision List........................................................2
Important Safety Notice............................................3
1.Monitor Specification...............................................4
2.LCD Monitor Description........................................5
3.Operation Instruction...............................................6
3.1.General Instructions.................................................6
3.2.Control Button......................................................6
3.3.Adjusting the Picture..........................................7
4.Input/Output Specification.......................................9
4.1.Input Signal Connector.........................................9
4.2.Factory Preset Display Modes.........................9
N
4.3.Panel Specification...............................................10
5.Block Diagram........................................................12
5.1.Software Flow Chart...........................................12
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
TABLE OF CONTENTS
Page Description
5.2.Electrical Block Diagram.................................14
6.Schematic...........................................................16
6.1.Main Board.................................................16
6.2.Power Board.....................................................20
7.PCB Layout...........................................................22
7.1.Main Board.......................................................22
7.2.Power Board.........................................................25
7.3.Key Board..........................................................26
8.Maintainability........................................................27
8.1.Equipments and Tools Requirement...............27
8.2.Trouble Shooting..........................................28
9.White-Balance Luminance adjustment..................34
10.Monitor Exploded View.....................................36
11.BOM List................................................................37
12.Different Parts List.................................................47
SAFETY NOTICE
1
Lenovo L193 Wide
Horizontal Frequency
30-81 kHz
Page
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Summary of Contents for Lenovo L193 Wide
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Page 1: Table Of Contents
19” LCD Color Monitor Lenovo L193 Wide Service Service Service Horizontal Frequency 30-81 kHz TABLE OF CONTENTS Description Page Description Page 5.2.Electrical Block Diagram…………………..…..14 Table Of Contents..……......…..1 6.Schematic…………………........…16 Revision List.…........……..2 6.1.Main Board..........16 Important Safety Notice.……......……..3 6.2.Power Board..……….…........20 1.Monitor Specification......………..4 7.PCB Layout..………………........22 2.LCD Monitor Description……………………………..5... -
Page 2: Revision List
19” LCD Color Monitor Lenovo L193 Wide Revision List Revision Date Revision History TPV Model T97MMRNCW7H4NN Sep.-06-07 First Version Release T97GMRNDW7H3NN T97MMRNDW7H3NN Dec.-06-07 Second Release T97MMRNDW7H5NN Jan.-20-08 New model lead in T97MMRNYW7H4NN... -
Page 3: Important Safety Notice
19” LCD Color Monitor Lenovo L193 Wide Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. -
Page 4: Monitor Specification
19” LCD Color Monitor Lenovo L193 Wide 1. Monitor Specifications Items Descriptions Driving system TFT Color LCD Type M190A1-L02 Size 48.14cm (19.05") LCD Panel Pixel pitch 0.285mm( H )x 0.285mm( V ) Viewable angle 170˚ (H) 160˚ (V) (CR≥10) Response time (type) 5 ms for CMO panel Sync. -
Page 5: Lcd Monitor Description
19” LCD Color Monitor Lenovo L193 Wide 2. LCD Monitor Description The LCD MONITOR will contain a main board, a power board and a key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage. -
Page 6: Operation Instruction
19” LCD Color Monitor Lenovo L193 Wide 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The control buttons are located on the right side of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. -
Page 7: Adjusting The Picture
19” LCD Color Monitor Lenovo L193 Wide 3.3 Adjusting the Picture OSD functions... - Page 8 19” LCD Color Monitor Lenovo L193 Wide...
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Page 9: Input/Output Specification
19” LCD Color Monitor Lenovo L193 Wide 4. Input/Output Specification 4.1 Input Signal Connector Pin No. Description Pin No. Description Red Input +5VDC Green Input Blue Input Connection detect H Sync Red GND V Sync Green GND Blue GND VGA connector layout... -
Page 10: Panel Specification
19” LCD Color Monitor Lenovo L193 Wide 4.3 Panel Specification 4.3.1 General Characteristics M190A1-L02 is a 19” wide TFT Liquid Crystal Display module with 4 CCFL Backlight unit and 30 pins 2ch-LVDS interface. This module supports 1440 x 900 WXGA+ mode and can display 16.2M colors. The inverter module for Backlight is not built in. - Page 11 19” LCD Color Monitor Lenovo L193 Wide 4.3.4 Optical Characteristics 4.3.5 Parameter guide line for CCFL Inverter TFT LCD Module: Back Light Unit:...
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Page 12: Block Diagram
19” LCD Color Monitor Lenovo L193 Wide 5. Block Diagram 5.1 Software Flow Chat... - Page 13 19” LCD Color Monitor Lenovo L193 Wide 1) MCU initialize. 2) Is the EPROM blank? 3) Program the EPROM by default values. 4) Get the PWM value of brightness from EPROM. 5) Is the power key pressed? 6) Clear all global flags.
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Page 14: Electrical Block Diagram
19” LCD Color Monitor Lenovo L193 Wide 5.2 Electrical Block Diagram 5.2.1 Main Board LCD Interface (CN301) Scalar TSUM16AWL-LF-1 EEPROM Key Control (Include MCU, ADC, OSD) SST25LF020A Interface (U401) (U203) (CN201) H sync V sync D-Sub Crystal Connector 14.318MHZ (CN101) - Page 15 19” LCD Color Monitor Lenovo L193 Wide 5.2.2 Inverter/Power Board AC input Bridge Rectifier Transformer Rectifier diodes EMI filter and Filter CN902 Start Circuit: R932、R904、R933 Feedback Circuit Control IC ON/OFF Output MOSFET Circuit Transformer Lamp Over ON/OFF Feedback Voltage Control...
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Page 16: Schematic
19" LCD Color Monitor Lenovo L193 Wide 6. Schematic 6.1 Main Board... - Page 17 19" LCD Color Monitor Lenovo L193 Wide...
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Page 20: Power Board
19" LCD Color Monitor Lenovo L193 Wide 6.2 Power Board... - Page 21 19" LCD Color Monitor Lenovo L193 Wide...
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Page 22: Pcb Layout
19" LCD Color Monitor Lenovo L193 Wide 7. PCB Layout 7.1 Main Board... - Page 23 19" LCD Color Monitor Lenovo L193 Wide...
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Page 25: Power Board
19" LCD Color Monitor Lenovo L193 Wide 7.2 Power Board... -
Page 26: Key Board
19" LCD Color Monitor Lenovo L193 Wide 7.3 Key Board... -
Page 27: Maintainability
19" LCD Color Monitor Lenovo L193 Wide 8. Maintainability 8.1 Equipments And Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual. -
Page 28: Trouble Shooting
19" LCD Color Monitor Lenovo L193 Wide 8.2 Trouble Shooting 8.2.1 Main Board No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the Adapter/Inverter section Measure U701 PIN2=3.3V... - Page 29 19" LCD Color Monitor Lenovo L193 Wide No picture (LED orange) No picture The button if X201 oscillate Replace X201 under control waveform is normal Check reset circuit of Check Correspondent component U401 is normal Measure U701 PIN2=3.3V U702 PIN2 =1.8V...
- Page 30 19" LCD Color Monitor Lenovo L193 Wide White screen White screen Measure Q301 base X201 oscillate waveform is normal is low level? Replace X201 Check Q301 and Q302 are Check reset circuit of broken or CN301 solder? U401 is normal...
- Page 31 19" LCD Color Monitor Lenovo L193 Wide 8.2.2 Power/Inverter Board 1.) No power Check CN902 pin5.4= 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C905 (+) Check bridge rectified circuit and F901 circuit...
- Page 32 19" LCD Color Monitor Lenovo L193 Wide 2.) W / LED, No Backlight Check CN902 pin4, 5 = 12V Check adapter or MB Check ON/OFF signal Check Interface board Check IC801 pin12=12V Change ON/OFF Check IC801 PIN9/10 have the output of square wave at short...
- Page 33 19" LCD Color Monitor Lenovo L193 Wide 8.2.3 Keypad Board OSD is unstable or not working Connect Key Pad Board Is Key Pad Board connecting normally? Replace Button Switch Is Button Switch normally? Replace Key Pad Board Is Key Pad Board normally?
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Page 34: White-Balance Luminance Adjustment
= 313 ±30, y = 329 ±30, Y= 230 ±20cd/m 3. Into Factory mode of Lenovo L193W: Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel. - Page 35 19" LCD Color Monitor Lenovo L193 Wide C. Adjust Bluish (9300K) color-temperature 1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM. Channel to Channel 9 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 283 ±30, y = 297 ±30, Y=280±20cd/m cd/m 4.
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Page 36: Monitor Exploded View
19" LCD Color Monitor Lenovo L193 Wide 10. Monitor Exploded View... -
Page 37: Bom List
19" LCD Color Monitor Lenovo L193 Wide 11. BOM List T97MMRNCW7H4NN Location Part NO. Description 023G3155608 4A LOGO 044G600270010A PAPER BOARD 044G9003214 CORNER PAPER 050G 600 1 W WHITE STRAP 050G 600 2 HANDLE1 050G 600 3 HANDLE2 052G 1185 56... - Page 38 19" LCD Color Monitor Lenovo L193 Wide C407 067G 3151014KV EC 105℃ CAP 100UF M 25V EC 105℃ CAP 100UF M 25V C408 067G 3151014KV EC 105℃ CAP 100UF M 25V C303 067G 3151014KV EC 105℃ CAP 100UF M 25V...
- Page 39 19" LCD Color Monitor Lenovo L193 Wide R208 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R413 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R232 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R414 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R401...
- Page 40 19" LCD Color Monitor Lenovo L193 Wide C226 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C225 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C219 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C212 065G0402104 15 MLCC 0402 0.1UF K 16V X5R...
- Page 41 19" LCD Color Monitor Lenovo L193 Wide J33G0022 AI 2L KEY PAD KEPC7QAB KEY BOARD SW104 077G 600 1GCJ TACT SWITCH TSPB-2 -NP SW103 077G 600 1GCJ TACT SWITCH TSPB-2 -NP SW102 077G 600 1GCJ TACT SWITCH TSPB-2 -NP SW101...
- Page 42 19" LCD Color Monitor Lenovo L193 Wide C901 065G305M1022BP Y2 1000PF M 250VAC Y5P C921 065G306M4722BP 4700PF +-20% 400VAC CAP 105℃ 100UF M 450V C905 067G 40Z10115K E.C 105℃ CAP 470UF M 25V ED SERIES C803 067G215D4714KV E.C 105℃ CAP 470UF M 25V ED SERIES...
- Page 43 19" LCD Color Monitor Lenovo L193 Wide R815 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R816 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R818 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R824 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W...
- Page 44 19" LCD Color Monitor Lenovo L193 Wide R850 061G0805220 22&8 1/10W R912 061G0805220 2F RST CHIPR 22 KOHM +-1% 1/8W R915 061G0805224 RST CHIPR 220 KOHM +-5% 1/8W R916 061G0805472 RST CHIPR 4.7 KOHM +-5% 1/8W R837 061G0805473 RST CHIPR 47 KOHM +-5% 1/8W...
- Page 45 19" LCD Color Monitor Lenovo L193 Wide C840 065G0805102 31 1000PF 50V NPO C839 065G0805102 31 1000PF 50V NPO C931 065G0805104 32 CHIP 0.1U 50V X7R C930 065G0805104 32 CHIP 0.1U 50V X7R C916 065G0805104 32 CHIP 0.1U 50V X7R...
- Page 46 19" LCD Color Monitor Lenovo L193 Wide 715G2538 2LEG POWER BOARD PCB Q85G0065 1 S SHIELD L901 S73G17476V LINE FILTER ASS'Y Q15G0017 6 MAIN FRAME Q33G0086 UG 1L STAND COVER Q34G0033 UG 3B REAR COVER 19" Q37G6048 3 HINGE Q40G 19N60819A...
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Page 47: Different Parts List
19" LCD Color Monitor Lenovo L193 Wide 12. Different Parts List Diversity of T97MMRNDW7H3NN compared with T97MMRNCW7H4NN Location Part No. Description 089G414A18N YH POWER CABLE Q40G 19N60816B RATING LABEL Q41G780060822B Q44G9048608 1D CARTON Q41G9002608 6A MANUAL Diversity of T97GMRNDW7H3NN compared with T97MMRNCW7H4NN Location Part No.