Acer AL1923 Panduan Servis - Halaman 35

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Halaman Cetak
Trouble Shooting
1. No Power
Change
Power Board
No
Check Short Of
Main Board
Change
U13,U12
Change X1 or
U4
Change U7 or
U4
Change U7
RUN Software
ISP
NO
Check CN7
+12V and +5V
Check U13=1.8V
NO
NO
X1=14.318MHz
NO
Check U7 Pin
1,2,5,6 Clock
Yes
No Power
Yes
U12=3.3V
Yes
Check
Yes
Yes
Check Key
Board
NO
Change Key
Board