Sharp Aquos LC-37D44U, Руководство по обслуживанию

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LC-37D44U
6 – 2
No video (1)
COMPONENT: No external input video
[INPUT-1]
COMPONENT: No external input video
[INPUT-3]
Is INPUT-1 selected on the input select menu screen? Is INPUT-3 selected on the input select menu screen?
YES
NO
YES
NO
Is the video signal detection function normal?
Check the line between pin(2) of J502 and pin AC7 of
IC8001 Is the video signal detection function normal?
Check the line between pin(2) of J509 and pin AE1 of
IC8001
Are component video signals fed to pins AM21, AN21 and
AL21(Y,PB,PR) of IC8001 via each L.P.F composed of capacitor
and inductor between (Q501,Q506,Q504) and (Q515,Q516,Q517)
respectively? Are component video signals fed to pins AN22, AP22 and
AL22(Y,PB,PR) of IC8001 via each L.P.F composed of capacitor and
inductor between (Q502,Q503,Q505) and (Q518,Q519,Q520) respec-
tively?
YES
NO
YES
NO
Check the line between each pin of J502 and each
input pin of IC8001. Check the line between each pin of J509 and each input pin
of IC8001.
Are digital video (LVDS) signals sent from pins B5~7, C5~7, D5~7, and E5~7 of IC8001?
YES
NO
Check the line between IC8001 and IC5103.
Check IC8001 and peripheral circuits.
Are digital video (RSDS) signals sent from IC5103 to SC5201 and
SC5202? NO Check the line between IC5103 and SC5201 and SC5202.
YES
Check IC5103 and peripheral circuits.
Check between (SC5201, SC5202) and LCD Panel.