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CHAPTER 4.
TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
COMPOSITE: No external input video
[INPUT-1]
Is INPUT-1 selected on the input select menu screen?
Is the video signal detection function normal?
Check the line between pin (2) of J501 and pin AD4 of
IC8001
YES
Is video signal fed to AN16 of IC8001 via L.P.F composed of capac-
itor and inductor between Q511 and Q521?
Check the line between pin (3) of J501 and pin AN16 of
IC8001.
YES
Are digital video (LVDS) signals sent from pins B5~7, C5~7, D5~7, and E5~7 of IC8001?
Are digital video (RSDS) signals sent from IC5103 to SC5201 and
SC5202?
Check between (SC5201, SC5202) and LCD Panel.
No video (1)
NO
NO
YES
YES
COMPOSITE: No external input video
Is INPUT-2 selected on the input select menu screen?
Is the video signal detection function normal?
Check the line between pin (2) of J503 and pin AC6 of
IC8001
YES
Is video signal fed to AN17 of IC8001 via L.P.F composed of capacitor and
inductor between Q512 and Q522?
Check the line between pin (3) of J503 and pin AN17 of
IC8001.
YES
Check the line between IC8001 and IC5103.
Check IC8001 and peripheral circuits.
NO
Check the line between IC5103 and SC5201 and SC5202.
Check IC5103 and peripheral circuits.
4 – 1
LC-32R24B
[INPUT-2]
NO
NO
NO
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