49
VC-A422U
VC-H822U
Linear audio playback is impossible.
(Hi-Fi E-E mode is normal).
Are the MH-AA harness and playback AMP.
peripheral parts normal?
Is the AC head surface clean?
Is the AC head height adjusted properly?
Replace the AC head.
Readjust the A/C head height.
Is the audio signal output from pin(11) of IC201?
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
Is it possible to confirm the audio signal (PB EQ)
on pin(100) of IC201?
Replace IC201.
Is pin(99) of IC201 in "L" level?
Check the line between pin(11) of IC201 and
pin(62) of IC651.
FLOW CHART NO.26
Check the periphery of pin(99) of IC201. (R617)
Содержание VC-A422U
Страница 50: ...VC A422U VC H822U VC A422U VC H822U 50 51 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM USMODEL SYSBLO eps ...
Страница 51: ...VC A422U VC H822U VC A422U VC H822U 52 53 SIGNAL FLOW BLOCK DIAGRAM VC A422U ...
Страница 52: ...VC A422U VC H822U VC A422U VC H822U 54 55 SIGNAL FLOW BLOCK DIAGRAM VC H822U ...
Страница 53: ...56 VC A422U VC H822U POWER CIRCUIT BLOCK DIAGRAM ...
Страница 61: ...69 VC A422U VC H822U A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB FOIL PATTERN OPERATION PWB LCD PWB ...
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