Sanyo DVR-V100E - Identification of Controls; Front Panel Controls Identification

19
TROUBLESHOOTING
18
TROUBLESHOOTING
b. AV1 E-E
No sound in AV1 E-E mode.
NO
Check Input AV1 JACK
Is Audio signal at IC251 pin#6, 7?
Is Audio signal output at IC602 pin
#3, 13?
Is Audio signal output at IC251
pin#16,17?
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Is 5V obtained at IC251 pin#40?
Replace IC251.
YES
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Check POWER circuit.
YES
YES
Check Output JACK.
YES
c. AV2 E-E
No sound in AV2 E-E mode.
NO
Check Input AV2 JACK
Is Audio signal at IC251 pin#8, 9?
Is Audio signal output at IC602
pin #3, 13?
Is Audio signal output at IC251
pin#19, 20?
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Is 5V obtained at IC251 pin#40?
Replace IC251.
YES
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Check POWER circuit.
YES
YES
Check Output JACK.
YES
Check IC602.
NO
Check IC602.
NO