Hitachi DV-RV8500E/UK Service Manual page 32

Details of Servicing and Troubleshooting > Troubleshooting
No audio during playback
No
Is power supplied to
IC801-34, 40?
Yes
Envelope waveform at
No
IC801-44: At least
300 mVp-p?
Yes
Are control signals
No
supplied to
IC801-42, 43?
Yes
No
Does audio signal
appear at IC801-35, 37?
Yes
No
Does audio signal
appear at IC801-16, 17?
Yes
No
Does audio signal
appear at PMD02-19, 21?
Yes
No
Does audio signal
appear at PMD02-23, 25?
Yes
No
Does audio signal
appear at IC802-21, 25?
Yes
Check AV1 jack (SC901).
Check 5.0V and
REG12V lines.
Is A. head switching
No
signal input to
IC801-41?
Yes
Check P3D01 connector.
Check
SYSTEM microprocessor
(IC501), and replace
if necessary.
Check P3D01 connector.
Replace IC801.
Check wiring between
IC801-16, 17 and
PMD02-19, 21.
Replace VDR PCB.
Replace IC802.
3 - 12
Check IC501, and
replace if necessary.