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SECTION 3. DVD PART
ELECTRICAL TROUBLESHOOTING GUIDE
1. µ-COM Circuit
A. No Power
Does Logo appear
on the screen?
OK
Is oscillation of
X501 normal?
Are IC501 Pins193, 80
and 81 normal?
POWER ON
Does CD/DVD
appear at FLD?
Does no DISC appear?
Check the oscillation
Check short.
Replace IC501
Digitized in Heiloo Netherland
Is P5101
connected normally?
Reconnect it.
Refer to Front Part
Check short
Replace IC301.
- 3-1 -
Check power
(Refer to power)
If power is
normal
Is P5501 Pin8 normal?
The waveform
on AD(00~21) of IC501
normal?
Are IC305 Pins68 normal?
Replace Main B/D.
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Table of Contents
Troubleshooting
