Service manual

Model
Title
Date Rev:
ViewSonic Corporation
MCU & BUTTON
94
ViewSonic Corporation
Confidential
-
Do N Copyot VX922-1
PARAMETER
EEPROM
B
C
TO BUTTON BOARD
Junction from
A change to B
R101,R103 net swap
less R94 to CN6 pin 11
E
2.0mm pitch
90° E&T
4607-11Pin
Reset circuit
Add Q20,R165,R166,C103,D32,D33
2004/6/16
LED_R
LED_R
LED_G
IICSCL
IICSDA
TxD
RxD
LEFT
MENU
UP
RIGHT
SEL
PWR
PWR
LEFT
UP
RIGHT
MENU
DOWN
SEL
DOWN
PWR_SEL
LED_G
RESET
DDC_SDA
DDC_SCL
AVS
PANEL_PW12
Hot_Plug
STBY
MUTE
SDIO1
SDIO2
RTD_SCSB
RTD_SDO/SDI
SDIO3
RTD_SCLK
VRMT
PANEL_PW3
5DVCC
3AVCC1
VCPU
VCPU
VCPU
VCPU
VCC12
VCPU
VCPU
3DVCC
VCPU
3DVCC
VCPU
VCPU
3AVCC1
R78
10K/6
R120 NC
R125 100/6
R108 4.7K/6
R109 4.7K/6
R98 1K/6
R38
2K/6
R92 100/6
R99 1K/6
C77
0.1U/6
R88
33K/6
R85
33K/6
Q13
2N3906
2
13
R113
NC
R83 100/6
R82 4.7K/6
CN6
4501-10-10P-R
1
2
3
4
5
6
7
8
9
10
+
C84
22uF/16V
R39 4.7K/6
R87
33K/6
R80
2K/6
R40 4.7K/6
R115
4.7K/6
R81
2K/6
R100 1K/6
R89
33K/6
R165
NC/100K/6
U8
24LC16
1
2
3
4 5
6
7
8
A0
A1
A2
VSS SI
SCK
WP
VCC
Q12
2N3906
2
13
R101 1K/6
R90
33K/6
C103
NC/1U/16V
R102 220/6
R91
33K/6
D32
NC/ 1N4148
R114
4.7K/6
R103 220/6
R110
4.7K/6
R106
NC/82K/6
C76
0.1U/6
R112
NC
C85
0.1u/6
C75
0.1U/6
12
C81
0.1U/6
Y2
11.0592MHz
C82
0.1U/6
R96 1K/6
R111
4.7K/6
D33
NC/DAN202U
3
2 1
R95 1K/6
R116
4.7K/6
R142 NC
R41
6.8K/6
C88 10pF/6
R147
4.7K/6
C86
NC/1U/16V
C87 10pF/6 R164 22
R163
4.7K/6
JP1
HEADER 4
1
2
3
4
I1
MTV312M64
12
11
7
19
17
18
20
21
22
23
24
25
3
2
1
42
41
40
33
32
31
30
9
26
27
28
29
810
14
13
4
38
39
5 6
16
15
34
35
36
37
43 44
X1
X2
RESET
INT0/P3.2
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P6.7
P6.6
P6.5
P6.4
P6.3
P6.1/AD1
P6.0/AD0
P3.1/TXD
P3.0/RXD
VCCVSS
ISCL/P3.5/T1
ISDA/P3.4/T0
VDD3
DA9/HALFV
DA8/HLFHO
NC NC
P6.2
P4.2
P5.6
DA7
P4.0
P4.1
HSYNC
VSYNC
R84
33K/6
C78
0.1U/6
R166
0/6
C79
0.1U/6
C80
0.1U/6
Q20
NC/2N3906
2
13
R93 4.7K/6
R97 1K/6
R79
10K/6
R124 100/6