22
TROUBLE SHOOTING GUIDE
E-5.
PREAMP CIRCUIT IN THE RECORD MODE
Is the Y.FM signal from
pin18 of IC301 fed to
pin9 of IC401?
NO
Check R305, C405
correct?
NO
Change damaged
components
YES
YES
TO LUMINANCE
SIGNAL IN THE REC
MODE
Is the down converted
Colour signal from pin14
of IC301 fed to pin10 of
IC401?
NO
Check C406 correct?
NO
Changed damaged
Components
YES
YES
TO COLOUR SIGNAL
IN THE REC MODE
Is ON/OFF 5V supplied to
pin13 of IC401 at 5V?
NO
Check ON/OFF 5V
YES
Is REC(H) supplied to
pin11 of IC401 at 5V?
NO
Check REC(H) or Q503,
Q504 and adjacent circuit
YES
Is the signal from pin9 and
10 fed to pin17 of IC401?
NO
Changed IC401
YES
Change DRUM
NO
Check Q401 and PCB
pattern
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 ...