ViewSonic VG930M - 19" LCD Monitor Service Manual page 76

1N4148
D26 1N4148 Q10
1 2
VGA5V_1
1N4148 D27
1 2 2
D28
1 2
DVI_POWER
2N3906
3.3DVCC
4.7K
R141
0
3.3DVCC
R145 NC/4.7K
ViewSonic Corporation
MCU_VCC
3
C122
+
R139 10uF_16V
Q11
2 3
2N3906 R142 D29
R143 4.7K
1N4148
NC/4.7K MCU_RESET
R144
D30
4.7K
1N4148
DGND
RESET_MCU
RP4
472_4
UP
DOWN
EXIT
MENU
POWER
VOLUME
R146 100
DDC2_SCL
R147 100
DDC2_SDA
LED1
IICSDA
IICSCL
LED2
R148 100
DDC1_SDA
R149 100
DDC1_SCL
RP6
472_4
MCU_VCC
VG930m-3_VA930m-1
Confidential - Do Not Copy
73
MCU_VCC
C123
C124
+
100uF 100nF
MCU_VCC
RP3
MCU_RESET
472_4
U5
44
P5.0/DA0
45
P5.1/DA1
46
P5.2/DA2
47 29
P5.3/DA3 NC
48
P5.4/DA4
1
P5.5/DA5
2 28
HSCL2/P5.6 VSYNC
3
HSDA2/P5.7
9 MTV512MG 27
P3.2/INT0 P6.7
10 26
P3.3/INT1 P6.6/CLK0
11 25
P3.4/T0 P6.5
12 24
P3.5/T1 P6.4
13 23
P7.6/CLKO P6.3/AD3
14 22
P7.7 P6.2/AD2
21
P6.1/AD1
8 20
HDA1/TX/P3.1 P6.0/AD0
5
HCL1/RX/P3.0
MTV512
24MHz Y2
R150
R152
6.8K
10K
C125 C126
10pF 10pF
5DVCC
Closed to MCU
MCU_VCC
R136
R137
4.7K 4.7K
IICSDA R138 100Ω
IICSCL R140 100Ω
RP1 RP2
472_4
472_4
ONPANEL_5V
INVON
SDIO0
SDIO1
SDIO2
RTD_SD3/SDI
RTD_SCSB
RTD_SCLK
MUTE
DVII_DETECT
DSUB_DETECT
STBY
RP5
472_4
R151
10K
MCU_VCC
C121
U4
100nF
8 7
5DVCC TEST
5 3
SDA A2
6 2
SCL A1
4 1
GND A0
X24C16 (SMD)
DGND
DGND
ViewSonic Corporation
Model
Title
Date Rev: