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8. Video Volume
Power
supplied correctly
to each IC?
Is video
signal output from
J652 S terminal?
Is signal
output from CN651"2"
and "4"?
Is clock
signal input to
IC551"9"?
Is digital
signal output from
IC551"1" to"8", "10" and
"11"?
Check
IC551.
*
Service tips
(1) The disc playback screen is in the normal condition but graphics in the "ON SCREEN"
mode are abnormal => Replace IC553.
(2) Only 1/4 compressed playback screen of DVD or video-CD is abnormal => Replace IC552.
NO
to Power Supply
Volume
YES
YES
signal output from
J651 composite
terminal?
NO
YES
Check L681,
L682 and IC651.
NO
NO
Check
IC451.
YES
NO
Check
IC451.
YES
*
Is video
Check the insertion of
NO
YES
OK
+5V power for video section is
supplied from IC654.
Check I/O voltage of IC654.
L680, L683, IC651,
IC655 and CN651.
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