Acer X221 Service Manual page 54

Service guide
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5
CN1
CONN 4x2-R
1
2
3
4
5
6
+5V
7
8
R1
D
0/1206
R5
10K/6
C
PC5V
3
PC5V
+5V
B
3,4,5
+5V
D4
SSM12LL
L1
A
5
4
VCC12
VCC12
5,6
VCC3.3
VCC3.3
R2
R3
0/6
10K/6
Q1
R4
1K/6
on_BACKLIGHT 4
MMST3906
C3
VCC3.3
0.1uF/6/NC
R6
10K/6
R8
1K/6
R9
0/6 5%
C6
Q2
1uF/8/NC
2N3904
R11
2.2K/6
2
Adj_BACKLIGHT 4
U3-A1
3
VIN
VOUT
D3
1
ADJ/GND
OUT
BAT54C-GS08
LT1117/TO252/NC
U1
3
VIN
VOUT
CX201209813/8
1
ADJ/GND
OUT
LT1084/TO263
+
R18
330/6 1%
4
3
D1
SSM12LL
B
Q3
2SB1132PT
D2
1N4148
R13
100/6
2
4
VCC3.3
2
R17
4
200/6 1%
+
3
2
VCTRL
4
R7
47/6
VCC1.8
C5
+
4.7uF/16V
R10
0/6
VCC1.8
4
R12
2K/6
VCC3.3
VCC3.3
4,6
D1
SOT-89
B
C
E
T
Title
Size
Document Number
B
Date:
2
1
D
C
B
A
T
Rev
A1A
POWER
Sheet
2
of
7
1

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