ViewSonic VX912 Service Manual page 77

C2
1u/6
U2
R2
GND
8
BOOST
VCC12 0/1206
7
IS
6
VCC
5
FB GND
C8
0.1u/6 AIC1563
GND
R11 3K/6 1%
C10 2200p/6
R11:3K 1% ohm, R12:1K 1%
GND
ohm -->output:5V;
R11:3.6K 1% ohm, R12:2.2K
GND
1% ohm-->output 3.3V
CN1 CONN 4x2-R
12V
FUSE1
0
1 2 1 2
3 4
5 6
C4
8
0.1u/6
3DVCC
3DVCC
R8
R10
0/6
10K/6
Q3
MMST3906
L3
2 1
10K/6
R14
10K/6/NC
R18 4.7K/6
C13
1U/8
GND DGND
ViewSonic Corporation
1
DC
R4 47/6
2
DE
R5 330K/6
3
CF
4
GND
GND Q2
1
MMST3906
R9
1K/6
R1,L1
VCC12
R13 1K/6
VRMT
3DVCC
R16
1K/6
DSUB_5V
Q4
SN7002E
2
VBRI
Confidential - Do Not Copy
74
D1
1SS355
L2
2 1
47UH
D3
RB081L-20
GND
RTD 3DVCC
3DVCC
ADC_ 3AVCC
3AVCC1
RTD 3PVCC
3PVCC
LVDS_3AVCC
3AVCC2
Modify
3DVCC
NC/CX201209805/8
L27
Q18
D30 D31 MMBT3906 CX201209805/8
1N4148 1N4148 L28
C100
0.1u/6
R143
4.7K/6 Q19
3DVCC
MMBT3906
R144
4.7K/6
VX912
5DVCC
5DVCC
+
3DVCC
U1 AIC1117CY
3 2
VIN VOUT
+ +
2.5DVCC
U3 AIC1117CY
3 2
VIN VOUT 2.5DVCC
+ +
U10
3
VIN VOUT
L29
2
GND
FEB/1206/NC
AIC1739/NC
3.3V-->2.5V regulator for 3.3V system power, no 5V 2004/4/14
VCPU
C101
NC/6
Title
<Title>
Size Document Number
Custom <Doc>
Date: Friday, October 15, 2004
3 C
2 1 E
RTD 3DVCC
3DVCC
3AVCC1
ADC_ 3AVCC
RTD 3PVCC
3PVCC
LVDS_3AVCC
3AVCC2
RTD 2.5DVCC
與 共
U10 U3 layout
2004/4/16
2.5DVCC
1
2.5DVCC
RTD 2.5DVCC
POWER
Rev
Sheet 8 of 8