ELECTRICAL TROUBLESHOOTING GUIDE -2/10
-65-
Replace IC301.
Refer to Front Part
Check short
Reconnect it.
2. µ-COM Circuit
A. No Power
Does Logo appear
on the screen?
Is oscillation of
X501 normal?
Are IC501 Pins 193, 80
and 81 normal?
Does no DISC appear?
Does Hello
appear at FLD?
Is P5901
connected normally?
Is P5901 Pin 23 normal?
The waveform
of IC501 normal?
Are IC301 Pins 5, 26 normal?
Replace DVD B/D.
Check the oscillation
Check short.
OK
Replace IC501
Check power.
(Refer to power)
If power is
normal
OK
POWER ON
1
1
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
A
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TEL 13942296513 QQ 376315150 892498299