F L O W C H A R T
P
L A
Y B A
C
K
T R O U B L E S H O O
T
I N G
Playback is possible but without
FLOW CHART NO.25 Hi-Fi
I
No Hi-Fi E-E sound heard
I
a signal at pin
of
Replace
Audio signal input from tuner.
input.
YES
Check between pin
of
and all the way up thru to pin (53)
of
NO
Check between pin (55) and all the
way up thru to pin (56) of
(Check C-CCD circuit)
NO
Check peripheral circuits of
and X502.
NO
Check between pin (19) and the
way
to pin (23) of
I
Replace
FLOW CHART NO.24 PLAYBACK MODE
TROUBLESHOOTING
ONLY)
Playback is possible but without
(PAL mode is OK)
I
SELECT
Switch at SECAM position?
NO
unit in
mode.
Check peripheral parts of AZ-ZA
Is there signal at pin (12) of
NO
Check 95301, E-E(L) line, 5301
and peripheral parts.
Is base signal
of
Q5304 biased?
NO
Check SECAM
line.
Is audio signal
Check line
inputted to pins
een
or
and (35)
Decoder circuit and
of
the Hi-Fi circuit.
YES
only)
line
between the IF
unit’s Audio Out
and the Hi-Fi
circuit.
pins
and (16) of
YES
I
Check
and
and all
the way thru between there.
Is the supply voltage of
fed
Check
and
and (27) of
to pins
(21) and
fed to
pin (46) of
lines.
YES
Replace
NO
Line coupling: Is audio signal outputted at pins (47) and (45) of
RF coupling
Is audio signal outputted at pin (48) of
EE mode
There is
about
1.4 at pin (23).
YES
Line coupling Check line ranging from pins (47) and (45) of
audio output terminal.
RF coupling
Check line ranging from pin
of
to the audio input
terminal pin
of tuner
only]
Check peripheral parts of 95304
and
Summary of Contents for VC-MH80
Page 64: ...10 VC MH80 10 VC M H90 8 L I 7 I 8 I 9 I 1 0 I 11 I 1 2 1 68 ...
Page 68: ...180 VC MH80 190 C MH90 c3 Playback Signal m Recording Signal b E E Signal 72 ...
Page 69: ...POWER CIRCUIT BLOCK DIAGRAM yi 2 __ i 1 I 1 VC MH80 VC M H90 73 V Vt _ _ ____ _ _ _ ____ i ...
Page 72: ...VC MH80 VC MH90 I 7 I 8 I 9 I 1 0 I 11 I 1 2 I 76 ...
Page 73: ...I I I I I I 1 I I ...
Page 74: ...VC MH80 VC MH90 78 ...
Page 76: ...VC MH80 VC MH90 1 f I I I I 7 I 8 I 9 I 1 0 I 11 I 1 2 I 80 ...
Page 77: ...RB n f I JI 3 I i I I ...
Page 78: ...VC MH80 VC MH90 I II I I II __ _ i r I 7 I 8 I 9 I 10 I 11 I 1 2 1 5 82 ...
Page 79: ...I I 0 I n I m I 0 I 0 I m I b 1 L I III r ...
Page 80: ...10 IO VC M H80 VC MH90 r 8 a a4 ...
Page 81: ...VC MH80 vc I VC MH90 vc I MAIN CIRCUIT 5 1 2 I 3 I 4 I 5 I 6 I a5 ...
Page 84: ...VC M H80 VC MH90 1362 1 u 404 I I RN I 404 7h RN1404 I 7 I a I 9 I 1 0 I 1 1 I 1 2 I ...
Page 85: ......
Page 86: ...VC MH80 VC MH90 I 7 I a I 9 I 1 0 I 11 I 1 2 I 90 _ _ ...
Page 87: ...VC MH80 VC MH90 OPERATION TIMER CIRCUIT VC MH90 1 I 2 I 3 I 4 I 5 I 6 I ...
Page 88: ...0 VC M H80 0 VC M H90 I I I I 7 I a I 9 I 1 0 I 11 I 1 2 I ...
Page 92: ...VC M H80 VC M H90 LL I I 7 I 8 I 9 I 10 I 11 I 12 I ...
Page 94: ...r L i ...
Page 97: ...VC MH80 vc n VC MHSO vc n PWB FOIL PATTERN I M A I N P W B 2 I 3 I 4 I 5 I 6 I 101 ...
Page 98: ...VC MH80 VC MHSO 102 ...
Page 99: ...VC MH80 VC MH90 IF PWB OPERATION P REC TIP PWE U U TIF I 2 I 3 I 4 I 5 I 6 I 103 ...
Page 123: ...VC MH80 VC MH90 11 EXPLODED VIEWS MECHANISM CHASSIS PARTS I 1 I 2 I 3 I 4 I 5 I 6 1 127 ...
Page 124: ...VC MH80 VC MH90 CASSElTE HOUSING CONTROL PARTS 1 I 2 1 3 I 4 I 5 1 6 I 128 ...
Page 125: ...VC MH80 VC MH90 MECHANICAL PARTS I 1 I 2 I 3 I 4 I 5 I 6 1 ...
