17
TROUBLESHOOTING FLOW CHART
C. TROUBLESHOOTING OF LUMINANCE SIGNAL IN THE RECORD MODE
NO
NO
NO
NO
Is the video signal obtained
from pin 21 of IC601
(AV SW circuit)?
Is the video signal from
pin 21 of IC601
fed to pin 36 of IC301?
Is ON/OFF 5V supplied to
IC301 at 5 volts?
YES
YES
Check PCB pattern and
adjacent circuits.
Check ON/OFF 5V
Check IC301
Check Q302, C311,
R311 and R312
NO
Check AV SW circuit
YES
Is the video signal from
pin 36 of IC301 fed to pin 29
of IC301?
YES
YES
Check IC301
Is the luminance signal from
pin 21 of IC301 fed to
pin 20 of IC301?
Appendix
Summary of Contents for DV-K813S Series
Page 15: ...14 CIRCUIT DIAGRAM 1 POWER CIRCUIT DIAGRAM 230V ONLY...
Page 16: ...15 CIRCUIT DIAGRAM 2 SYSCON CIRCUIT DIAGRAM...
Page 17: ...16 CIRCUIT DIAGRAM 3 A V CIRCUIT DIAGRAM SECAM...
Page 18: ...17 4 PIF CIRCUIT DIAGRAM CIRCUIT DIAGRAM...
Page 19: ...18 CIRCUIT DIAGRAM 5 HIFI SW CIRCUIT DIAGRAM...
Page 20: ...19 CIRCUIT DIAGRAM 6 SW CIRCUIT DIAGRAM...
Page 25: ...24 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 1 PCB MAIN...
Page 26: ...25 DISASSEMBLY 1 PACKING ASS Y...
Page 27: ...26 DISASSEMBLY 2 FRONT PANEL ASSEMBLY DV K813S SERIES DV K823S SERIES...
Page 28: ...27 DISASSEMBLY DV K873S SERIES DV K893S SERIES...
Page 29: ...28 DISASSEMBLY DV K843S SERIES DV K863S SERIES...
Page 30: ...29 DISASSEMBLY DV K9A3S SERIES...