Sanyo HVR-DX610 Service Manual page 24

TROUBLE SHOOTING
Is 12V obtained at IC251 pin#34?
YES
Is 5V obtained at IC251 pin#40?
Is Audio signal at IC251 pin#41?
YES
Is Audio signal output at IC251
pin#16,17?
YES
Is Audio signal output at IC602 pin
#3, 13?
YES
Check Output JACK.
NO
NO
NO
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Check IC602.
23
Check POWER circuit.
Check A.SW at IC501
pin#19.
YES
Replace IC251.