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Sharp QA-1650 Service Manual
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TROUBLESHOOTING CHARTSTARTHandle TFT-LCD panel with care,because it is very expensive parts.POWER ON ie LED lighting? >S2YEIs power supplyoltage OK described below:Go to Power SourceCircuit Check.Input digital videosignal.(CGA,14.318MHz)Press the RESETSW on the panel.ls normal display madeby phase adjustment?Input analog videosignal.(VGA,25.175MHz) input digital videosignal.(CGA,14.318MHz)Is display normal?YES|Press tha RESETSW on the panel.Is normal display madeby phase adjustment?Press the RESETSW on the panel.ls normal display madeby phase adjustment?Does screen conditionchanges when thresholdvalue is changed?Go to Analog Video Signal Go to LCD DisplayDisplay Failure Check. © Failure Check@Go to Analog Video SignalDisplay Failure Check. ©Input composite sync.signal.(MAC 1 ,31.24MHz)is display normal?YES) Press the RESETSW on the panel.TP206 (VCPU) 5.1VTP207 (VLCD) 5VTP20g(VCC) 5VTP205 -10VCN201-@ 12VTP(A-VCC) 5VTP210(A-VCC) 5V\s normal display madeby phase adjustment?Go to Cimposite Sync.(8) Signal Display Failure Chéck.@4 |
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