Sanyo DVR-V100E - Overview (Continued); Playback-Only Disc Types; Disc-Related Terminology; DVD Recording Notes and Restrictions

13
TROUBLESHOOTING
12
TROUBLESHOOTING
3. VIDEO circuit
A. EE screen doesn t appear
EE MODE Picture NG
Is Video signal input at
IC301 pin#48,50,52,54?
Is 5V supplied at
pin#42,55,72,91of IC301?
Is C.S, DATA, CLOCK signal
input pin#67,68,69 of IC301?
Check IF and SCART JACK.
Check POWER circuit.
Check IC501
pin #58,66,67
NO
YES
YES
NO
NO
YES
Is signal output from pin#65 of
IC301?
YES
NO
Check IC301
pin#62 Q-V Sync.
Is signal input into pin#13
of P100?
YES
NO
Check PCB Pattern.
Is signal output from pin#1
of P100?
YES
NO
Check MPEG circuit.
Is signal output at IC301
pin#61?
YES
NO
Check PCB Pattern.
Is signal input at IC301
pin#56?
Check RF Output.
Check PCB Pattern & LINE
out.
YES
YES
Check IC301.
NO
B. Playback picture doesn t appear
1) No VCR Playback Picture
YES
YES
Is Y SIGNAL output at IC301
pin#46?
Is VIDEO SIGNAL output at IC301
pin#65?
Check and Replace IC301.
PB video signal missing.
Is Envelope output from IC301
pin#79?
NO
NO
Same as EE MODE check.
Is 5V supplied at IC301 pin#91?
Is SW Pulse input at IC301
pin#70?
Is 5V obtained at IC301 pin#24,
42,55,72,91?
Check POWER 5V.
Check IC501 pin#18.
Clean head or Replace head.
Check POWER 5V.
NO
NO
Check PATTERN
NO
YES
YES
YES
YES
YES
YES
NO
Does X301(4.43MHz)
oscillate?
Is Y SIGNAL input at IC301
pin#43?
NO
Check PATTERN
YES
NO
Replace X301.
NO
Check and replace IC301.