16
TROUBLE SHOOTING GUIDE
D-2.
NO SOUND IN THE PB MODE AFTER RECORDING
IN REC MODE
Is signal audio input into
pin71 of IC301?
NO
Check R609, R610 and
JK603
YES
Is +5V applied to pin76
and 47 of IC301?
NO
Check IC802 and adjacent
circuit
YES
Is the voltage above 4V at
pin80 of IC301?
NO
Is CLK and DATA applied
to pin63 and 64 of
IC301?
NO
Check IC501
YES
Is audio signal input into
pin79 of IC301?
NO
Check C212, R215, R214
and C210
YES
YES
YES
Does pin6 of T201
Oscillate?
NO
Is the volatge from 0.7V
to 3.0V at pin5 of IC301?
NO
AC signal is put on the
DC voltage at pin5 of
IC301?
YES
YES
YES
AC signal put on 70KHz
at base of Q201?
Check AC head
YES
Clean head
Check T201's circuit
Is the voltage from 0.7V
to 0.8V at pin6 of IC301?
NO
Check IC301
YES
Check Q205
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Summary of Contents for DV-S103A Series
Page 33: ...32 PRINTED CIRCUIT BOARD 1 PCB MAIN All manuals and user guides at all guides com...
Page 34: ...33 PRINTED CIRCUIT BOARD 2 PCB POWER SMPS All manuals and user guides at all guides com...
Page 40: ...39 EXPLODING VIEWS PARTS LIST 1 PACKING AS All manuals and user guides at all guides com...
