23
TROUBLE SHOOTING GUIDE
E-6.
LUMINANCE SIGNAL IN THE RECORD MODE
Is ON/OFFF 5V supplied
to pin36 and 47 of IC301?
NO
Check the ON/OFF 5V
YES
Is the obtained from pin34
of IC301?
NO
TO EE MODE
YES
Is the signal from pin34 of
IC301 fed to pin25 of
IC301?
NO
Is C319 correct?
NO
Change damaged
Compoents
YES
YES
Check IC301
Is the luminance signal
from pin25 fed to pin26 of
IC301?
NO
Are Q302, C312, C313,
C342, R307, R308, R309
and R310 correct?
NO
Changed damaged
Components
YES
YES
Check IC301
Is the luminance signal
from pin26 fed to pin18
of IC301?
NO
Check IC301
YES
Is the modulated lumi-
nance
signal from pin18 of IC301
fed to pin9 of IC401?
NO
Check R305 and C405
YES
To preamp circuit in the rec
mode
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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...