ViewSonic Va703m4 Service Manual
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ViewSonic Corporation 48 6. Troubleshooting Flow Chart Main Procedure Start Connect all of devices to the LCD monitor Power On Is indicator LED light?A. Power Circuit Troubleshooting Yes No 1 Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 49 Is backlight on? Display Performance O.K.? Function AdjustmentO.K.? Audio Function O.K.? No Trouble Found End B. Backlight Troubleshooting C. Performance Troubleshooting D. Function Troubleshooting E. Audio Troubleshooting Yes Yes Yes No No No No 1 Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 50 A. Power Circuit Troubleshooting Start Change AC/ DC Adapter Retry Power On Change Main Board & Retry No Trouble Found End End End Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 51 B. Backlight Troubleshooting Start Change Inverter and Retry No Trouble Found End End End EndBacklightChangeModule Change Main Board& Retry Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 52 C. Performance Troubleshooting Start Screen is flickering? Change VGA Cable Change Main Board Bad Uniformity? Is screen white? NO NO Screen is scrolling? LCD Line Defect? Change Inverter Board Change LCD Module Change LCDModule Check ConnectorChange Main Board Change LCD Module NO YesNoChange Main Board NO NO 2 NO YES YES YESNO YES YES YES NO YES YES YES YES YES YESYES Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 53 2 Screen with noise or line bar?Prss Reset Button fromfront panel controlEnd Change Main Board Screen is smaller?Make sure relution is set at default Reset O.K.? Change MainBoard No Trouble Found End No No Yes No Yes No Yes No YesYes Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 54 D. Function Troubleshooting Start Control Menu not Functioning? Change Control Board and Retry? Change Main Board No Trouble Found End No No Yes Yes Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 55 E. Audio Troubleshooting Start Make sure sound output, Audio cable is OK. No SoundChange Speaker Change Speaker Change Main Board Sound is broken? Volume Unadjustable? No Trouble Found End No Yes Yes No Yes No Confidential - Do Not Copy VA703b-4_VA703m-4
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ViewSonic Corporation 56 7. Recommended Spare Parts List Confidential - Do Not Copy VA703b-4_VA703m-4 ViewSonic Model Number:VS11366 Serial No. Prifix:QAN Rev: 1a ItemECR/ECN ViewSonic P/N Ref. P/N Location Universal number#1Accessories: AC POWER CORD 美規 22AWG A-00006505 W402221509531 2 MAIN BOARD ASSY B-00006501 XLM191A040002 3 KEY BOARD ASSY B-00006502 XLM191A050001 4 POWER BOARD+INVERTER BOARD ASSY B-00006503 XLM1700390010 5 BEZEL ASSY LM/MR17I-AA C-00006508 XLM171A100004 6 HOUSING ASSY...
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ViewSonic Corporation 57 Confidential - Do Not Copy VA703b-4_VA703m-4 Serial No. Prefix:QAP Rev: 1aItemECR/ECN ViewSonic P/N Ref. P/N Location Universal number# 1Accessories: AC POWER CORD UL 22AWG L150cm BLACK YISHENG A-00006505W402221509531 2 MAIN BOARD ASSY LM/MR19I-AAB-00006501 XLM191A040002 3 KEY BOARD ASSY LM/MR19I-AAA B-00006502 XLM191A050001 4 POWER BOARD+INVERTER BOARD ASSY B-00006503 XLM1700390010 5 BASE ASSY(midnight gray) LM/MR17I-AA BASE+RUBBE RC-00006583 XLM171A280003 6 HOUSING ASSY...