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)
Summary of Contents for VC-A422U
Page 51: ...VC A422U VC H822U VC A422U VC H822U 52 53 SIGNAL FLOW BLOCK DIAGRAM VC A422U ...
Page 52: ...VC A422U VC H822U VC A422U VC H822U 54 55 SIGNAL FLOW BLOCK DIAGRAM VC H822U ...
Page 53: ...56 VC A422U VC H822U POWER CIRCUIT BLOCK DIAGRAM ...
Page 63: ...72 VC A422U VC H822U M E M O ...
Page 76: ...85 VC A422U VC H822U M E M O ...