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AOC Wipro WA19W, Service Manual

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AOC Wipro WA19W Service Manual Download Page 34

19

″

 LCD Monitor                     

                                                                                  Wipro WA19W 

34                                                                                                                    

8. Maintainability 

8.1 Equipments and Tools Requirement 

1. Voltmeter. 

2. Oscilloscope. 

3. Pattern 

Generator. 

4.  DDC Tool with an IBM Compatible Computer. 

5. Alignment 

Tool. 

6. LCD 

Color 

Analyzer. 

7. Service 

Manual. 

8. User 

Manual. 

8.2 Trouble Shooting 

8.2.1 Main Board 
No power 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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 power section

Check if X401 oscillate 
waveforms are normal

Measure U701 Pin2=3.3V, 

C704(+)=1.8V 

OK 

OK 

NG 

NG 

NG 

Check CN701,U701,Q702,Q703 

Replace U401 

Replace X401 

NG 

OK 

Summary of Contents for Wipro WA19W

Page 1: ...3 Operation Instruction 6 3 1 Control Buttons 6 3 2 Attaching the Cables 7 3 3 Adjusting the Picture 8 4 Input Output Specification 10 4 1 Input Signal Connector 10 4 2 Factory Preset Display Modes 11...

Page 2: ...19 LCD Monitor Wipro WA19W 2 Revision List Revision Date Revision History TPV Model A00 April 16 2009 Initial Release T9RSM6NCX2PUDN...

Page 3: ...acteristics may create shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from AOC AOC assumes no liability express or impl...

Page 4: ...R OFF Mode 1W Input Connector 15 pin D Sub DVI 24 pin Input Video Signal Analog 0 7Vp p standard 75 OHM Positive Digital signal Maximum Screen Size Horizontal 410mm Vertical 256mm Power Source 100 240...

Page 5: ...trol 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 AC IN 100V 240V Monitor Block Diagram Video signal DDC P...

Page 6: ...when OSD is OFF or activate de activate adjustment function when OSD is ON or Exit OSD menu when in Brightness Contrast Adjust OSD status Activates the volume control when the OSD is OFF or navigate t...

Page 7: ...power cord may be connected to either a wall power outlet or the power outlet socket on your PC depending on the type of power cord supplied with your LCD monitor Connecting the D Sub Cable Connect o...

Page 8: ...o adjust any other function repeat steps 2 3 The OSD Message Main Menu Item Main Menu Icon Sub Menu Item Sub Menu Description Brightness Backlight Adjustment Contrast Contrast from Digital register St...

Page 9: ...e Skin Mode Green Field on or off Disable or Enable Green Field Mode Sky blue on or off Disable or Enable Sky blue Mode AutoDetect on or off Disable or Enable AutoDetect Mode Color Boost Demo on or of...

Page 10: ...ck 8 B Ground 15 Pin Color Display Signal Cable 1 5 6 10 11 15 Pin No Description Pin No Description 1 TMDS Data 2 13 TMDS Data 3 2 TMDS Data 2 14 5V Power 3 TMDS Data 2 4 Shield 15 Ground for 5V 4 TM...

Page 11: ...uency Dos mode 720 400 31 47kHz 70 0Hz 640 480 31 47kHz 60 0Hz VGA 640 480 37 50kHz 75 0Hz 800 600 37 879kHz 60 0Hz SVGA 800 600 46 875kHz 75 0Hz 1024 768 48 363kHz 60 0Hz 1024 768 56 476kHz 70 0Hz XG...

Page 12: ...crystal display LCD that uses amorphous silicon TFT Thin Film Transistor as switching components This model is composed of a TFT LCD panel a driver circuit and a back light unit The resolution of a 1...

Page 13: ...19 LCD Monitor Wipro WA19W 13 4 3 2 Optical Characteristics...

Page 14: ...19 LCD Monitor Wipro WA19W 14 4 3 3 Electrical Characteristics TFT LCD Module Back Light Unit...

Page 15: ...19 LCD Monitor Wipro WA19W 15 5 Block Diagram 5 1 Software Flow Chart 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18...

Page 16: ...the LED and set it to green color Scalar initializes 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are there any signals coming 13 Does the scalar send out an interr...

Page 17: ...Diagram 5 2 1 Main Board EEPROM M24C04 U403 Panel Interface CN301 Crystal 14 318MHZ X401 Scalar TSUM5PFHL LF Include MCU ADC OSD U401 H sync V sync RGB D Sub Connector CN101 DVI Connector CN102 Flash...

Page 18: ...IM ON OFF Feedback Circuit Transformer PT801 MOSFET Q805 Q806 Lamp Output Circuit PWM Control OZ9938GN IC801 16V EMI filter Start Resistor R904 R905 R906 PWM Control LD7552DPS IC901 Transformer T901 A...

Page 19: ...1 9 DAT1 10 1 3shield 11 DAT3 12 DAT3 13 5V 14 SYNC GND 15 HPD 16 DAT0 17 DAT0 18 0 5shield 19 DAT5 20 DAT5 21 clk shield 22 clk 23 clk 24 GND 26 GND 25 CN102 JACK R104 1K 1 16W 5 R138 4K7 1 16W 5 FB1...

Page 20: ...C303 NC C304 NC S D R302 4K7 1 16W 5 3 G LVA0P RXE0 715G2883 1 6 RXEC LVACKP LVBCKM RXOC RXO1 LVB1P LVB2M RXO2 RXOC LVBCKP RXO3 LVB3M RXE2 LVA2M 2 4 6 8 10 12 14 1 3 5 7 9 11 13 CN302 RXE0 LVA0P RXO0...

Page 21: ...3 OHM 2W NC Both 223 and 252 foot print NC 3 3 OHM 2W U701 223 223 252 Mute BKLT EN 3 1 2 D702 NC DSUB_5V BKLT VBRI BKLT EN CMVCC BKLT VBRI CMVCC R702 10K 1 16W 5 C706 100UF25V C701 0 1uF 16V R703 10K...

Page 22: ...2 PA3 R429 100R 1 16W 5 C415 0 1uF 16V VCC3 3 VCC3 3 1 C404 0 1uF 16V LED_ORANGE KEY2 PB7 R401 390 OHM 1 16W R440 10K 1 16W 5 C434 0 1uF 16V PB9 R412 10K 1 16W 5 VCC3 3 PB5 VMPLL C416 100NF16V R426 10...

Page 23: ...PMBS3904 R942 1K 1 10W 1 D903 LL4148 C906 1500pF2KV C917 680uF25V C918 680uF25V C930 0 1uF 1 2 FB902 80OHM 1 2 FB901 BEAD R946 150OHM2W 1 4 2 3 L901 30 0mH R902 1M 1 4W C931 0 1uF 5V 1 2 3 4 5 6 7 8...

Page 24: ...V4 LV1 LV3 LV2 LV4 R827 NC Q804 NC C823 NC R846 RST CHIP MAX 0R05 1 10W D802 LL4148 D803 LL4148 D804 LL4148 R801 2 4K OHM 1 10W 3 1 2 D809 BAV99 C801 0 047uF C802 0 047uF R803 5K1 1 8W R806 100R 1 8W...

Page 25: ...11 GND 12 GND 13 ROUT 14 VDD 15 ROUT 16 IC601 APA2069JITUL Q601 PMBS3904 C612 0 1uF 16V R609 10K 1 10W 5 C613 0 1uF 16V ROUT LOUT ROUT R608 0R05 1 8W R606 6 2KOHM 5 1 10W 1 2 FB602 BEAD C606 0 47uF 1...

Page 26: ...715G2835 2 key G2835 2 2 1 3 4 5 SW005 SW SGND 1 2 3 4 5 6 CN001 CONN ZD001 NC UDZS5 6B OK DOWN UP CONNECTOR LED MENU Power C006 NC 0 1uF C008 NC 0 1uF ZD004 NC UDZS5 6B C010 NC 0 1uF ZD003 NC UDZS5 6...

Page 27: ...19 LCD Monitor Wipro WA19W 27 7 PCB Layout 7 1 Main Board 715G2883 1 6...

Page 28: ...19 LCD Monitor Wipro WA19W 28...

Page 29: ...19 LCD Monitor Wipro WA19W 29...

Page 30: ...19 LCD Monitor Wipro WA19W 30 7 2 Power Board 715G2824 2...

Page 31: ...19 LCD Monitor Wipro WA19W 31...

Page 32: ...19 LCD Monitor Wipro WA19W 32...

Page 33: ...19 LCD Monitor Wipro WA19W 33 7 3 Key Board 715G2835 2...

Page 34: ...Color Analyzer 7 Service Manual 8 User Manual 8 2 Trouble Shooting 8 2 1 Main Board No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100 240...

Page 35: ...al Replace U401 Replace X401 Measure U701 Pin2 3 3V C704 1 8V Check Correspondent component Replace U401 Check X401 oscillate waveform is normal Check CN701 U701 Q702 Q703 OK OK OK OK OK NG NG NG NG C...

Page 36: ...base is low level X401 oscillate waveform is normal Check CN301 is solder and Q301 Q302 are OK Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK OK Replace X...

Page 37: ...eck bridge rectified circuit and F901 circuit Check start voltage for the pin3 of IC901 Check R904 R905 R906 Change IC901 NG Check the auxiliary voltage is bigger than 10V and smaller than 20V 1 Check...

Page 38: ...rd or main board NG OK Check IC801 PIN2 16V NG OK Change on off circuit Check IC801 PIN13 have triangle wave NG OK Check IC801 Check IC801 PIN1 PIN15 PWM wave NG OK Check IC801 Check Q805 Q806 Drain w...

Page 39: ...8 2 3 Key Board OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch Y N N Is Key Pad Board normally Replace Key Pa...

Page 40: ...0 y 329 30 Y 180cd m2 3 Entet into the factory mode Turn on power 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 4...

Page 41: ...w x 283 30 y 297 30 Y 150cd m2 4 Adjust the RED on factory window until chroma 7120 indicator reached the value R 100 5 Adjust the GREEN on factory window until chroma 7120 indicator reached the value...

Page 42: ...ion 1 BEZEL 2 LENS 3 KEY PAD 4 KEY BOARD 5 PANEL 6 POW ER BOARD 7 MAIN BOARD 8 MAIN FRAME 9 SPK 10 REAR COVER 11 HINGE 12 STAND TOP 13 STAND 14 BASE 15 FOOT No P N S1 SCREW 0M1G1730 6120 S2 SCREW 0M1G...

Page 43: ...G1740 12 47 CR3 SCREW Q12G6600 6 FOOT Q34G0297AED 1B0100 STAND TOP Q34G0298AED 1B0120 STAND Q34G0299AED 1B0133 BASE8S2 M037 Q37G0067015 HINGE M037 SQ37G0067015 HINGE ASS Y 015F0067510 SUPPORT 015F0067...

Page 44: ...MAX 0R05 1 16W R134 061G0402100 RST CHIPR 10 OHM 5 1 16W R132 061G0402100 RST CHIPR 10 OHM 5 1 16W R131 061G0402100 RST CHIPR 10 OHM 5 1 16W R130 061G0402100 RST CHIPR 10 OHM 5 1 16W R129 061G0402100...

Page 45: ...1G0402472 RST CHIPR 4 7 KOHM 5 1 16W R138 061G0402472 RST CHIPR 4 7 KOHM 5 1 16W R302 061G0402472 RST CHIPR 4 7 KOHM 5 1 16W R704 061G0402472 RST CHIPR 4 7 KOHM 5 1 16W R304 061G0402473 RST CHIPR 47 K...

Page 46: ...22UF 20 80 C420 065G0402470 31 MLCC 0402 CAP 47PF J 50V NPO C421 065G0402470 31 MLCC 0402 CAP 47PF J 50V NPO C102 065G0402473 12 CHIP 0 047UF 16V X7R C106 065G0402473 12 CHIP 0 047UF 16V X7R C108 065...

Page 47: ...HJ TACT SWITCH 2PIN 709G2835 QA001 CONSUMPTIVE ASS Y 715G2835 2 KEY PCB FR 1 S S 116X17MM 709G2835 QS001 CONSUMPTIVE ASS Y PWPC7941MQIK POWER BOARD G2824 2 X X 16 090316 040G 45762412B CBPC LABEL GND1...

Page 48: ...G 30214K DC PHONE JACK 5PIN BD901B 093G 50460900 BRIDGE 4A 800V GBU408 LITEON D907 093G3006 1 1 31DQ06FC3 NIHON INTER CN902 095G 82014E504 WIRE HARNESS 14P SAN 9P 140MM CN902 095G 82014X504 WIRE HARNE...

Page 49: ...3105 RST CHIPR 1M OHM 5 1 10W R826 061G0603105 RST CHIPR 1M OHM 5 1 10W R817 061G0603105 RST CHIPR 1M OHM 5 1 10W C808 061G0603184 RST CHIPR 180 KOHM 5 1 10W R820 061G0603203 RST CHIPR 20 KOHM 5 1 10W...

Page 50: ...100N P C613 065G0603104 12 CER2 0603 X7R 16V 100N P C806 065G060310512K T CAP CHIP 0603 1UF K 16V X7R C807 065G060310512K T CAP CHIP 0603 1UF K 16V X7R C818 065G0603221 31 CER1 0603 NP0 50V 220P P C8...

Page 51: ...2Y62552T SY RST MGFR 6 2MOHM 5 1 2W FUTABA R828 061G212Y62552T SY RST MGFR 6 2MOHM 5 1 2W FUTABA C906 065G 2K152 1T6213 CAP CER 1500PF K 2KV C604 067G215Y1014KT EC CAP 105 C908 067G215Y4707KT 47UF 50V...

Page 52: ...Y 095G 90 23 JUMPER WIRE 709G2824 QS001 CONSUMPTIVE ASS Y 052G 2191 A PAPER TAPE HS1 Q90G6295 3 HEAT SINK L802 S73G17435VA TRANSFORMER ASS Y L801 S73G17435VA TRANSFORMER ASS Y L901 S73L17440VG TRANSFO...

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