<Component video signal input> No video output (INPUT-1)
Yes
No
No
Yes
Check between J501 and pins 16,11 and 8 of IC502.
Select INPUT-1 and the input signal on the input switching
menu screen.
No video output from extermal input <<INPUT-1>>
Is video signal fed to pins 16, 11 and 8 of IC502?
Is video signal out from pins 3,5 and 6 of IC502?
Check IC502 and peripheral circuits.
No
Yes
No
Yes
Check IC801 and peripheral circuits.
Check between IC801 and IC502.(Q506, Q507 and Q508)
Is video signal fed to pins J2, L1 and R1 via L.P.F.
composed of Q506, Q507 and Q508?
Are signals from B16, A16, P22, P23, R22, R23, T22,
T23, U22, U23, V22, V23 of IC801 normal?
Check LCD_CONTROL PWB.
Yes
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