Sanyo HVR-DX610 Service Manual page 13

TROUBLESHOOTING
B. No NORMAL AUDIO playback in record/playback mode(Check in REC mode)
No Normal Audio playback in
record/playback mode
NO Check Input SCART JACK.
Are there Audio signal at IC251
pin#2~11?
YES
NO
Is there recording signal at
IC251 pin#21?
YES
Signal at IC251 pin#21 is transferred to NO
IC301 pin#13,15,17?
YES
REC (H) BASE voltage at Q206
NO
is 5V?
YES
Collect signal at C222 is about
NO
70Vp-p at 70KHz?
YES
Check P201 pin#2, 4, 8 and A/C
HEAD.
Check Input Front JACK.
Check ICD02(DVD)
Check IC251.
Check signal flow circuit.
Check IC501 pin#45.
Check Q203.
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C. No Hi-Fi Playback audio(PLAY MODE)
Is 12V obtained at IC251 pin#34?
NO
YES
Is 5V obtained at IC251 pin#40?
NO
Is Audio signal at IC251 pin#41?
YES
NO
Is Audio signal output at IC251
Are CLK and DATA obtained at
pin#16,17?
IC251 pin#42,43?
YES
NO
Is Audio signal output at IC602 pin
Check IC602.
#3, 13?
YES
Check Output JACK.
TROUBLESHOOTING
Check POWER circuit.
Check A.SW at IC501
pin#19.
YES
Replace IC251.
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