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AOC E2795VH Service Download Page 49

 

49 

8.2 Trouble Shooting 

1. No 

Power 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

OK 

NG

No power

 

Check power cable is 

tightened? 

Check Power “On/Off” 

is “On”? 

Re-plug the power cable 

Replace main board and check connections 

Check the LED 
indicate is OK? 

Check the AC power   

Replace the power board and check connections 

OK 

NG

OK 

NG

NG

Turn on the Power “On/Off” switch 

Replace key board and check connections 

NG 

Summary of Contents for E2795VH

Page 1: ...on Instructions 6 3 1 General Instructions 6 3 2 Control Buttons 6 3 3 Adjusting the Picture 7 4 Input Output Specification 20 4 1 Input Signal Connector 20 4 2 Factory Preset Display Modes 22 4 3 Pan...

Page 2: ...sion History TPV Model Name A00 Apr 25 2011 Initial release HFAMNQ6BB8K2DN HFAMNQ6LB83ADN A01 Jul 20 2011 Add new models HFAMNQ6AB8UNDN HFAMNQ6TB81RDN A02 Sep 15 2011 Add new model HFAMNQ6EB8ACDN A03...

Page 3: ...ay 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 implied arising o...

Page 4: ...4 1 Monitor Specification...

Page 5: ...ness 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 Video signal DDC Adapter Board Flat Panel and LE...

Page 6: ...lume adjustment bar Press or to adjust volume 4 3 or wide image ratio When there is no OSD press hotkey continuously to change 4 3 or wide image ratio If the product screen size is 4 3 or input signal...

Page 7: ...ust any other function repeat steps 2 3 4 OSD Lock Function To lock the OSD press and hold the MENU button while the monitor is off and then press power button to turn the monitor on To un lock the OS...

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Page 20: ...20 4 Input Output Specification 4 1 Input Signal Connector D Sub Connector DVI Connector...

Page 21: ...21 HDMI Connector...

Page 22: ...22 4 2 Factory Preset Display Modes...

Page 23: ...rystal Display module with WLED Backlight unit and 30 pins 2ch LVDS interface This module supports 1920 x 1080 Full HD mode and can display up to 16 7M colors The converter module for Backlight is not...

Page 24: ...24 4 3 3 Electrical Characteristics BACKLIGHT UNIT...

Page 25: ...3 VCC1 2 PB 0 9 HSYNC GIN VSYNC GNDG BIN GNDR RIN GNDB DDCA_SDA DDCA_SCL HDMI1_SDA HDMI1_SCL on_PANEL 5V PA 0 9 DET_VGA AOUT_L AOUT_R on_BACKLIGHT adj_BACKLIGHT MUTE VOL DVI_HPD HDMI_HPD DET_HDMI DET...

Page 26: ...filter Start Resistor R904 R905 R906 PWM Control IC901 Transformer AC input 16V Bridge Rectifier and Filter Feedback Circuit Rectifier diodes Power Switch Q901 Photo coupler IC903 5V D801 LED CN806 P...

Page 27: ...6B HDMI1_D1 4 D SUBSOG R146 10K1 16W DVI5V 7 DDC CLK ESD_5V C118 100N 16V D103 BAV99 3 1 2 DVI_HPD 4 DDC CLK ESD_5V U108 RClamp0524P TCT 1 2 3 4 5 6 7 8 9 10 IN1 IN2 GND IN3 IN4 OUT4 OUT3 GND OUT2 OU...

Page 28: ...PIN1 Volume DET_DVI 3 R410 1K1 16W D405 RLZ5 6B C422 100N 16V VCC3 3 7 CN407_PIN2 Q402_C C403 100N 16V PA 0 9 5 RSTB PA4 R449 NC 100R 1 16W 5 DVI_VCC U402_WP FB405 120 OHM 1 2 MUTE 6 LEDG U401_PIN101...

Page 29: ...5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 RXE1 RXO3 PB1 PB1 PB8 RXE3 R435 220 OHM 1 4W PA1 RXE0 1 A 5 7 Wednesday March 23 2011 715G3502 1 4 0 PANEL INTERFACE G3502 1 A1...

Page 30: ...LOUTP VDD LOUTN GND GND ROUTN VDD ROUTP 5V_AUDIO 5V_AUDIO R CN602_PIN1 R612 1K1 16W R609 0R05OHM1 16W AINL 4 CN602 NC CONN 1 2 3 4 5V_AUDIO U602 LM358D 1 8 2 7 3 6 4 5 OUT1 VDD IN1 OUT2 IN1 IN2 GND IN...

Page 31: ...3 VSS VOUT VIN PC5V 3 C701 100N 16V C716 10U 16V D705 NC LL4148 U703 NC AZ1117D 1 2TRE1 1 2 3 ADJ GND OUTPUT INPUT Q702 2N3904S RTK PS 5V R712 10K1 16W 5V CN702 NC CONN 1 2 R706 2 2 OHM 2W C718 100N 1...

Page 32: ...A NC C918 680UF25V IC904 AS431AZTR E1 R922 NC F901 FUSE 4A 250V R927 3 3K 1 1 10W R926 3KOHM 1 10W C921 NC 1000PF 250VAC HV C916 680UF25V Q901 SMK0870F C912 2200pF 500V C913 47N 50V 4A 250V 16V R910 1...

Page 33: ...ate 14 5V D801 SK310B 1 2 Q803 NC DR R821 NC L801 47uH C804 470N 25V ON OFF R829 NC R804 100K 1 10W R823 0R05OHM1 8W R830 NC ON OFF DIM R825 NC OVP R811 1 OHM 5 1 8W R826 3 3R 1 8W 5 C807 4 7UF 100V C...

Page 34: ...TOR 3 2 1 6 5 4 CN706 CONNNECTOR 3 2 1 6 5 4 A A 1 9 Thursday March 20 2008 715G2727 D 1 USB G2727 D X X 1 080318 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co L...

Page 35: ...757 NC UGND R758 NC 10K 1 10W 5 R761 NC UGND R755 NC FB752 120 OHM 1 2 UGND L754 90 OHM 1 2 3 4 DP3 FB757 120 OHM 1 2 R781 3 6K 1 10W FB751 120 OHM 1 2 USB_POWER VBUS4 DM3 R763 NC C786 NC R762 100KOHM...

Page 36: ...DEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component R005 1K 1 10W 5 OK LED_1 Power LED_1 LED_2 LED DC_POWERON LED01 LED 3 4 1 2 LBADC2 LBADC1 UP R002 2K 1 10W 5 MENU C004 0 1uF 50V SGND C0...

Page 37: ...37 7 PCB Layout 7 1 Main Board 715G3502 1...

Page 38: ...38...

Page 39: ...39...

Page 40: ...40 7 2 Power Board 715G3727P01004003H...

Page 41: ...41...

Page 42: ...42...

Page 43: ...43 715G4013P03001004S...

Page 44: ...44...

Page 45: ...45 7 3 USB Board 715G2727 1 HF...

Page 46: ...46 715G3552T02000004S...

Page 47: ...47 7 4 Key Board 715G3584K01000004K...

Page 48: ...ntainability 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 Use...

Page 49: ...ned Check Power On Off is On Re plug the power cable Replace main board and check connections Check the LED indicate is OK Check the AC power Replace the power board and check connections OK NG OK NG...

Page 50: ...s the power button is OK Check the LVDS FFC cable or panel The end NG OK OK NG Replace the main board Replace the power board and connection Replace the LVDS FFC cable or panel NG The end Replace the...

Page 51: ...y mode Set to the optimal frequency select the recommended frequency Pull out signal cable and check Self Test Feature Check is ok Check the signal cable and the PC Readjust the phase and pixel clock...

Page 52: ...shift Replace the signal cable Pull out the signal cable and check the screen color display is normal The end Replace the signal cable or PC Reset the factory mode In the user mode set the color sett...

Page 53: ...al color temp parameter is x 301 30 y 317 30 C MEM CHANNEL 9 Cool color Cool color temp parameter is x 283 30 y 297 30 D MEM CHANNEL 10 sRGB color sRGB color temp parameter is x 313 30 y 329 30 3 Ente...

Page 54: ...x 283 30 y 297 30 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 G 100 6 Adju...

Page 55: ...55 10 Monitor Exploded View...

Page 56: ...2 MAIN_FRAME 13 SPK 14 MAINFRAME SHIELDING 15 HINGE BRACKET 16 REAR COVER 27 17 HINGE ASS Y 18 STAND No Part No Description 20 BASE 6 0G1G1030 6120 SCREW FOR PB MAIN_FRAME 21 FOOT 8 0M1G1030 6120 SCRE...

Page 57: ...15N IS AC POWER CORD 1500 E09502 095G8014 6DH82 HARNESS 6P 2008 6P A1253HA HR 220MM 2nd Source E09502 095G8014 6XH82 HARNESS 6P 2008 6P A1253HA HR 220MM 095G8014 8D 84 HARNESS 8P 8P 140MM E09501 095G8...

Page 58: ...210T 01 METAL WASHERS12 0 4 72 1 0T 028F0618070 SHAFTS 002F0604100 00 NUTS 0M1F 130 6120 SCREW 802GQA34513 L27WA 10T2 10S2 E2795VH REAR ASS Y 0M1G 140 8 47 CR3 SCREW M034 Q34G7424 GM 2B0100 REAR COVER...

Page 59: ...4 2 2 OHM 2W 5 MOF C416 067G215V470 4R NO SUGGEST 47UF 20 25V CN603 088G 30255S PHONE JACK TWO LAYER 3 5MM 5P BLK CN101 088G 35315F HD D SUB CONN F ATTACHED SCREW CN102 088G 35424F D DVI 24PIN CONN F...

Page 60: ...111 056G1133918 NO SUGGEST AT24C02BN SH T 2KB SO 8 U402 056G2233 11 IC PM25LD020C SCE SIOC 8 150MIL 2M Q102 057G 417 4 PMBS3904 PHILIPS SMT 04 Q103 057G 417 4 PMBS3904 PHILIPS SMT 04 Q101 057G 417 6 P...

Page 61: ...YUAN R154 061G0402100 JI TEST ONLY RST 0402 10R 5 1 16W TA I R153 061G0402100 JI TEST ONLY RST 0402 10R 5 1 16W TA I R152 061G0402100 JI TEST ONLY RST 0402 10R 5 1 16W TA I R151 061G0402100 JI TEST ON...

Page 62: ...5 TZAI YUAN R702 061G0402101 JT RST CHIP 100R 1 16W 5 TZAI YUAN R120 061G0402101 JT RST CHIP 100R 1 16W 5 TZAI YUAN R119 061G0402101 JT RST CHIP 100R 1 16W 5 TZAI YUAN R110 061G0402101 JT RST CHIP 10...

Page 63: ...0402103 JI TEST ONLY RST 0402 10K 5 1 16W TA I R707 061G0402103 JI TEST ONLY RST 0402 10K 5 1 16W TA I R703 061G0402103 JI TEST ONLY RST 0402 10K 5 1 16W TA I R701 061G0402103 JI TEST ONLY RST 0402 10...

Page 64: ...61G0402220 JI RST 0402 22R 5 1 16W TA I R111 061G0402220 JT RST CHIP 22R 1 16W 5 TZAI YUAN R112 061G0402220 JT RST CHIP 22R 1 16W 5 TZAI YUAN R122 061G0402223 JI TEST ONLY RST 0402 22K 5 1 16W TA I R4...

Page 65: ...1 16W YAGEO R115 061G0402472 JY RST CHIPR 4 7KOHM 5 1 16W YAGEO R123 061G0402472 JY RST CHIPR 4 7KOHM 5 1 16W YAGEO R124 061G0402472 JY RST CHIPR 4 7KOHM 5 1 16W YAGEO R137 061G0402472 JY RST CHIPR 4...

Page 66: ...5 OHM 5 1 4W YAGEO C412 065G040210412K A CAP CHIP 0402 100NF K 16V X7R C414 065G040210412K A CAP CHIP 0402 100NF K 16V X7R C418 065G040210412K A CAP CHIP 0402 100NF K 16V X7R C419 065G040210412K A CAP...

Page 67: ...5G040210412K M CAP 0402 0 1UF 10 16V X7R C134 065G040210412K M CAP 0402 0 1UF 10 16V X7R C128 065G040210412K M CAP 0402 0 1UF 10 16V X7R C127 065G040210412K M CAP 0402 0 1UF 10 16V X7R C126 065G040210...

Page 68: ...0V Y5V 0805 C435 065G0805106 A7 CHIP 10UF 10V Y5V 0805 C605 065G080522512K M CAP 0805 2 2UF 10 16V X7R U402 070GHDCP500HDC HDCP CODE FB407 071G 56K121 CHIP BEAD FB405 071G 56K121 CHIP BEAD FB404 071G...

Page 69: ...1G SOT 23 LRC D117 093G 6433P BAV99 D116 093G 6433P BAV99 D115 093G 6433P BAV99 D114 093G 6433P BAV99 D113 093G 6433P BAV99 D112 093G 6433P BAV99 D111 093G 6433P BAV99 D110 093G 6433P BAV99 D103 093G...

Page 70: ...84K01000004F KEY PCB FR4 130X11X1 6MM DS 2nd Source E715 715G3584K01000004K KEY PCB FR4 130X11X1 6MM DS R005 061G0603102 JT RST CHIP 1K 1 10W 5 TZAI YUAN USB8QD1 USB BOARD G2727 D X X 1 080421 CN707 0...

Page 71: ...F751 061G 56A075 LT HF SMD PTC 0 75A 1206L075THYR R775 061G0402103 JY RST CHIPR 10KOHM 5 1 16W YAGEO R774 061G0402103 JY RST CHIPR 10KOHM 5 1 16W YAGEO R773 061G0402103 JY RST CHIPR 10KOHM 5 1 16W YAG...

Page 72: ...0 16V X7R C782 065G040210412K M CAP 0402 0 1UF 10 16V X7R C780 065G040210412K M CAP 0402 0 1UF 10 16V X7R C778 065G040210412K M CAP 0402 0 1UF 10 16V X7R C775 065G040210412K M CAP 0402 0 1UF 10 16V X7...

Page 73: ...CHIP BEAD FB754 071G 56K121 CHIP BEAD FB753 071G 56K121 CHIP BEAD FB752 071G 56K121 CHIP BEAD FB751 071G 56K121 CHIP BEAD FB751 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012 120T LF FB752 071G 56K121 M C...

Page 74: ...820OHM 5 2W C903 063G107K474 6S 0 47UF 10 C903 063G107K474 UM CAP X2 470NF 10 275VAC MPX C901 065G306M1022BP CAP Y1 1NF 20 250V Y5U C902 065G306M1022BP CAP Y1 1NF 20 250V Y5U C902 065G306M1023BW CAP...

Page 75: ...502 HARNESS 4P SAN 3P 2008 380MM CN902 095G 82511D906 HARNESS 11P SCN 10P 160MM FQE91185I CN902 095G 82511W906 HARNESS 11P SCN 10P 160MM WDK09082701 2nd Source 705GQ993088 D909 ASS Y D909 093G 60247 F...

Page 76: ...W TZAI YUAN R910 061G1206100 JT RST CHIPR 10 OHM 5 1 4W TZAI YUAN R918 061G1206101 JF RST CHIPR 100 OHM 5 1 4W FENGHUA R919 061G1206101 JF RST CHIPR 100 OHM 5 1 4W FENGHUA R920 061G1206101 JF RST CHIP...

Page 77: ...F J 50V NPO C909 065G080522131J Y CAP CHIP 0805 220P 50V NP0 5 C913 065G080547332K 3 CAP CHIP 0805 47N 50V X7R 10 C924 065G080547332K 3 CAP CHIP 0805 47N 50V X7R 10 C913 065G080547332K Y CAP CHIP 0805...

Page 78: ...18 095G 90 23 JUMPER WIRE J913 095G 90 23 JUMPER WIRE J910 095G 90 23 JUMPER WIRE J909 095G 90 23 JUMPER WIRE J908 095G 90 23 JUMPER WIRE J904 095G 90 23 JUMPER WIRE J903 095G 90 23 JUMPER WIRE J806 0...

Page 79: ...HM 5 1 8W FENGHUA R823 061G0805000 JF RST CHIPR 0 OHM 5 1 8W FENGHUA R823 061G0805000 JY RST CHIPR MAX 0R05 OHM 1 8W YAGEO R815 061G0805000 JY RST CHIPR MAX 0R05 OHM 1 8W YAGEO R832 061G0805109 JF RST...

Page 80: ...IP 0805 100PF J 50V NPO C805 065G080510131J M CAP CHIP 0805 100PF J 50V NPO C801 065G080522432K A CAP 0805 220NF 10 50V X7R C803 065G080522432K A CAP 0805 220NF 10 50V X7R C804 065G080522432K A CAP 08...

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