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ELECTRICAL TROUBLESHOOTING GUIDE -2/10
QQ
3 7 63 1515 0
2. µ-COM Circuit
A. No Power
YES
Does Logo appear
on the screen?
YES
OK
TE
L 13942296513
1
Is oscillation of
X501 normal?
YES
Are IC501 Pins 193, 80
and 81 normal?
YES
A
www
.
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Does no DISC appear?
NO
NO
NO
Check the oscillation
NO
Check short.
OK
Replace IC501
x
ao
u163
y
i
http://www.xiaoyu163.com
2 9
8
POWER ON
Does Hello
NO
appear at FLD?
Is P5901
NO
connected normally?
Reconnect it.
Q Q
3
6 7
1 3
1 5
Refer to Front Part
Check short
Replace IC301.
co
.
-65-
9 4
2 8
YES
Check power.
(Refer to power)
If power is
normal
NO
Is P5901 Pin 23 normal?
0 5
8
2 9
9 4
2 8
YES
1
A
NO
NO
The waveform
of IC501 normal?
YES
NO
Are IC301 Pins 5, 26 normal?
YES
Replace DVD B/D.
m
9 9
9 9
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