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
Summary of Contents for DV-S123W Series
Page 33: ...32 PRINTED CIRCUIT BOARD 1 PCB MAIN ...
Page 34: ...33 PRINTED CIRCUIT BOARD 2 PCB POWER SMPS ...
Page 35: ...34 CIRCUIT DIAGRAM 1 CONNECTION DIAGRAM DV S103W S103A S103N ...
Page 36: ...35 CIRCUIT DIAGRAM 2 POWER CIRCUIT DV S103W ...
Page 37: ...36 CIRCUIT DIAGRAM 3 SERVO SYSCON CIRCUIT DV S103W ...
Page 38: ...37 CIRCUIT DIAGRAM 4 AV INPUT OUTPUT CIRCUIT DV S103W ...
Page 39: ...38 CIRCUIT DIAGRAM 5 VIDEO AUDIO CIRCUIT DV S103W S103A S103N S103S ...
Page 40: ...39 EXPLODING VIEWS PARTS LIST 1 PACKING AS ...
Page 41: ...40 EXPLODING VIEWS PARTS LIST 2 SET TOTAL ASSEMBLY ...
Page 42: ...41 EXPLODING VIEWS PARTS LIST 3 FRONT PANEL ASSEMBLY DV S103W FRONT PANEL ASSEMBLY ...
Page 43: ...42 EXPLODING VIEWS PARTS LIST DV S123W FRONT PANEL ASSEMBLY ...