Chapter 4 Trouble Shooting - Acer T230H Service Manual

TROUBLE SHOOTING
1. No Power
Change Power
Board
No
Check Short Of
Main Board
Change
U1,Q7,Q8,Q9,
Q13
Change Y1
Change U3
Change U3
RU Software
ISP
Check Bottom
Board
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No Power
NO
Check CN1
Check U1=3.3V
Q7,Q8,Q9,Q13=
NO
NO
Y1=24MHz
NO
Check U3 Pin
15,16 Clock
Check U3
Pin 24 level
Chapter 4
+5V
Yes
1.8V==1.8V
Yes
Check
Yes
Yes
NO
Change U3