Dvd Part; Electrical Troubleshooting Guide; Μ-Com Circuit - Sanyo HV-DX1E Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

1. µ-COM Circuit
A. No Power
YES
Does Logo appear
on the screen?
YES
OK
1
Is oscillation of
X501 normal?
YES
Are IC503 Pins193, 80
and 81 normal?
YES
A

DVD PART

Does no DISC appear?
NO
NO
NO
Check the oscillation
NO
Check short.
OK
Replace IC501
POWER ON
NO
Does Hello
appear at FLD?
Is PVD02
NO
connected normally?
Reconnect it.
Refer to Front Part
Check short
Replace IC301.
3-52
YES
Check power.
(Refer to power)
If power is
normal
NO
Is PVD01 Pin1 normal?
YES
A
The waveform
NO NO
on AD(00~21) of IC501
normal?
YES
NO
Are IC301 Pins5, 26 normal?
YES
Replace Main B/D.
1