ViewSonic VX912 Service Manual page 74

VCPU
D32 R165
NC/ 1N4148 NC/100K/6
Q20
2
NC/2N3906
3AVCC1
3AVCC1
R147
4.7K/6
RESET
R166
0/6
Add Q20,R165,R166,C103,D32,D33
2004/6/16
VCPU
C75
R80 R81
0.1U/6
U8
2K/6 2K/6
1 8
A0 VCC
2 7
A1 WP
R83
3 6
A2 SCK
R92
4 5
VSS SI
24LC16
PARAMETER
PANEL_PW12
EEPROM
ViewSonic Corporation
Reset circuit
R78
10K/6
LED_G
VCPU
LED_R
R106
NC/82K/6
C84
+
D33
22uF/16V
NC/DAN202U
C87 10pF/6
12
Y2
11.0592MHz
C88 10pF/6
11
VCPU
19
R142 NC
100/6 IICSCL
14
100/6 IICSDA
13
LED_R
27
LED_G
26
16
MUTE
30
31
Hot_Plug
32
STBY PWR_SEL
33
VCC12
R41
6.8K/6
R38
2K/6
Confidential - Do Not Copy
71
3DVCC
R79
B
10K/6
Q12
R82 4.7K/6 2N3906
2
Q13
R93 4.7K/6
2
2N3906
MENU
SEL
PWR
VCPU DOWN
UP
RIGHT
LEFT
C85
Junction from
0.1u/6
A change to B
VCPU
I1 R164 22
3
P5.0
2
P5.1
1
X1 P5.2
42
P5.3
41
P5.4
40
X2 P5.5
34
P5.6
7 39
RESET DA8/HLFHO
38
DA9/HALFV
17
P1.0
18
P1.1
20
INT0/P3.2 P1.2
21
P1.3
22
P1.4
23
ISCL/P3.5/T1 P1.5
24
ISDA/P3.4/T0 P1.6
25
P6.0/AD0 P1.7
35
P6.1/AD1 DA7
36
P6.2 P4.0
9 37
P6.3 P4.1
15
P6.4 P4.2
P6.5
28
P6.6 P3.1/TXD
29
P6.7 P3.0/RXD
MTV312M64
VX912
C
E
3DVCC
R95
R96
R97
R98
R99
R100
R101
R102
R103
R163
VCPU
4.7K/6
AVS
MENU
SEL
PWR R110 R111
UP
DOWN 4.7K/6 4.7K/6
RIGHT
LEFT
R39 4.7K/6
R40 4.7K/6
VRMT
VCPU
R124 100/6 TxD
R125 100/6 RxD
R109 4.7K/6
R108 4.7K/6
Title
MCU & BUTTON
Size Document Number
Date: Friday, October 15, 2004
less R94 to CN6 pin 11
R101,R103 net swap
CN6
1K/6
10
1K/6
9
1K/6
8
1K/6
7
1K/6
6
1K/6
5
1K/6
4
220/6 2.0mm pitch
3
220/6
2
90° E&T
1
4607-11Pin
4501-10-10P-R
TO BUTTON BOARD
VCPU
R112 R113 R114 R115 R116
NC NC 4.7K/6 4.7K/6 4.7K/6
R120 NC
PANEL_PW3
SDIO1
SDIO2
SDIO3
RTD_SDO/SDI
RTD_SCLK
RTD_SCSB
JP1
DDC_SDA 1
DDC_SCL 2
3
4
5DVCC
HEADER 4
Rev
DISPLAY A
Sheet 5 of 8