VC-S101U
56
YES
YES
NO
NO
FLOW CHART NO.23 Hi-Fi SOUND MODE TROUBLESHOOTING(3)
Is teh playback envelope signal outputted
at pin(4) of IC6401?
Check the A-H.SW.P. line.
Replace IC6401.
Is there A-H.SW.P. signal at pin( 35) of
IC651?
YES
NO
Is the playback envelope signal inputted
at pin(25) of IC651?
Check line between pin(4) of IC6401 and
pin (25) of IC651.
YES
YES
NO
NO
YES
Are the audio playback signal outputted
at pins(3) and (9) of IC651?
Replace IC651.
Do peripheral circuits of pins(3) and (9)
of IC651oprate normal?.
Check peripheral circuits of pins(3) and (9)
of IC651 (C653,C659).
NO
Are the audio playback signal outputted
at pins(11) and (13) of IC651?
heck line between pins(11) and (13) of IC651
and audio output terminal (J6501).
No Hi-Fi sound playback(E-E mode is possible)
NO
NO
NO
FLOW CHART NO.28 LINEAR SOUND MODE TROUBLESHOOTING (1)
Is the recording audio signal inputted to
pin (16) of IC601?
Is there "H" level at pin (24) of IC601?
YES
YES
No linear sound recording (Hi-Fi E-E mode is possible)
Does the bias oscillation circuit function?
Check line between pin (35) of IC651 and
pin (16) of IC601.
Check BIAS CTL(H) line.
NO
YES
Replace IC601.
Check
bias oscillation circuit.
(T601, Q602, Q603, Q604)
NO
NO
Check
R635, R636 and C652.
YES
Is there recording audio signal superimposed
with the bias signal at pin (3) of IC601?
Is there recording audio signal superimposed
with the bias signal at pin (4) of SC601?
YES
Check the A/C Head harness and A/C head.
Is the recording audio signal outputted at
pin (21) of IC601?
Summary of Contents for VC-S101U
Page 6: ...VC S101U 6 1 3 LOCATION OF MAJOR COMPONENTS AND CONTROL ...
Page 58: ...58 VC S101U 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM ...
Page 59: ...59 VC S101U ...
Page 60: ...60 VC S101U SIGNAL FLOW BLOCK DIAGRAM REC Luminance signal REC Chrominance signal ...
Page 62: ...62 VC S101U AUDIO BLOCK DIAGRAM ...
Page 63: ...63 VC S101U REC Signal PB Signal EE Signal ...
Page 64: ...64 VC S101U POWER CIRCUIT BLOCK DIAGRAM ...
Page 67: ...67 13 12 11 10 9 8 7 VC S101U ...
Page 69: ...69 13 12 11 10 9 8 7 VC S101U ...
Page 71: ...71 13 12 11 10 9 8 7 VC S101U ...
Page 73: ...73 13 12 11 10 9 8 7 VC S101U ...
Page 75: ...75 13 12 11 10 9 8 7 VC S101U ...
Page 77: ...77 13 12 11 10 9 8 7 VC S101U ...
Page 79: ...79 13 12 11 10 9 8 7 VC S101U ...
Page 81: ...81 13 12 11 10 9 8 7 VC S101U ...
Page 83: ...83 13 12 11 10 9 8 7 VC S101U ...
Page 84: ...84 7 6 5 4 3 2 1 A B C D E F G H VC S101U PWB FOIL PATTERN MAIN PWB ...
Page 85: ...85 13 12 11 10 9 8 7 VC S101U ...
Page 86: ...86 7 6 5 4 3 2 1 A B C D E F G H VC S101U Y C PWB SIDE A Y C PWB SIDE B ...
Page 87: ...87 13 12 11 10 9 8 7 VC S101U NR PWB SIDE A NR PWB SIDE B ...
Page 88: ...88 7 6 5 4 3 2 1 A B C D E F G H VC S101U Hi Fi JACK PWB SIDE A SIDE B ...
Page 89: ...89 13 12 11 10 9 8 7 VC S101U OPERATION PWB FRONT A V PWB ...
Page 90: ...90 7 6 5 4 3 2 1 A B C D E F G H VC S101U JACK PWB SIDE A JACK PWB SIDE B ...