Service manual

Model
Title
Date Rev:
ViewSonic Corporation
POWER
99
ViewSonic Corporation
Confidential
-
Do N Copyot VX922-1
3
E
C
12
Modify
ADC_ 3AVCC
LVDS_3AVCC
RTD 2.5DVCC
RTD 3DVCC
RTD 3PVCC
RTD 2.5DVCC
ADC_ 3AVCC
LVDS_3AVCC
RTD 3DVCC
RTD 3PVCC
3.3V-->2.5V regulator for 3.3V system power, no 5V 2004/4/14
R11:3K 1% ohm, R12:1K 1%
ohm -->output:5V;
R11:3.6K 1% ohm, R12:2.2K
1% ohm-->output 3.3V
U10 U3 layout
與共
2004/4/16
R1,L1
3DVCC
3AVCC2
5DVCC
3DVCC
3AVCC1
3PVCC
2.5DVCC
VBRI
VRMT
3AVCC1
3PVCC
3AVCC2
3DVCC
2.5DVCC
DSUB_5V
VCPU
3DVCC
GND
GND
2.5DVCC
GND
GND
GND
GND
3DVCC
GND
5DVCC
DGND
3DVCC
12V
VCC12
3DVCC
GND
3DVCC
2.5DVCC
VCC12
L3
10K/6
12
C8
0.1u/6
R11 3K/6 1%
Q2
MMST3906
3 2
1
C2
1u/6
R14
10K/6/NC
+
EC1
10uF/16V
R2
0/1206
U2
AIC1563
1
2
3
45
6
7
8
DC
DE
CF
GNDFB
VCC
IS
BOOST
C11
0.1U/6
R144
4.7K/6
Q3
MMST3906
Q4
SN7002E
3
2
1
C7
0.1u/6
C9
120p/6
EC4
330u/16V
D3
RB081L-20
1 3
R6
330/6 1%
D1
1SS355
R16
1K/6
C3
0.1u/6
C100
0.1u/6
R8
0/6
R9
1K/6
R4 47/6
U1 AIC1117CY
3
1
2
VIN
GND
VOUT
L28
CX201209805/8
C5
0.1u/6
C102
1U/6
R18 4.7K/6
L29
FEB/1206/NC
+
EC3
10uF/16V
R13 1K/6
+
EC2
10uF/16V
FUSE1
0
1 2
U3 AIC1117CY
3
1
2
VIN
GND
VOUT
C4
0.1u/6
U10
AIC1739/NC
3 1
2
VIN VOUT
GND
C12
0.1u/6
L2
47UH
12
+
EC6
10uF/16V
R15
200/6 1%
+
EC5
10uF/16V
R17
200/6 1%
C6
330u/16V
R3
200/6 1%
Q19
MMBT3906
C101
NC/6
R143
4.7K/6
D2
1SS355
C10 2200p/6
Q1
NDS9410A/SO
2 3 4 5
7 6 81
D31
1N4148
R5 330K/6
L27
NC/CX201209805/8
D30
1N4148
CN1 CONN 4x2-R
4
5 6
1 2
3
8
Q18
MMBT3906
R12
1K/6 1%
R7
240K/6 1%
C1
0.1u/6
R10
10K/6
C13
1U/8