ViewSonic vx912-1 Service Manual page 65

VCPU
R41
R43 R44 R45
82K/6
NC 10K/6 NC
1N4148/NC
R48
4 CSZ
R49
4 SDA
R50
4 SCL
R53 2K/6
VCPU
R54 2K/6
R18 100/6
3 SCL-VGA
R19 100/6
3 SDA-VGA
VCPU
C50 C51
3 DDC_VS
22P/6
22P/6
7 MUTE
R58 NC
VCPU
R59 22/6
4 INT
C52 22P/6
C53 22P/6
4 XTAL C54 0.1U/6/NC
ViewSonic Corporation
VCPU
VDD3V3
C44
U4
0.1U/6
C45
1 8
A0 VCC
2 7
A1 WP
0.1U/6 SCL_O
3 6
A2 SCK
SDA_O
4 5
VSS SI
24LC08B
PARAMETER
D23
EEPROM
U5
7 8
RST VDD
4
VDD3
22/6 MH0001
17 24
P1.0 P1.6
22/6 MH0002
18 25
P1.1 P1.7
22/6 MH0003
20
P1.2
MENU
21 35
P1.3 HCLAMP/DA7
SEL
22 38
P1.4 HLFHO/DA9
PWR
23 1
P1.5 P5.2/DA2
SCL_1
14 34
P3.5/T1/ISCL P5.6/DA6
SDA_1
13 3
P3.4/T0/ISDA P5.0/DA0
2
P5.1/DA1
29 33
P3.0/RXD/HSCL P6.7/DA13
28 32
P3.1/TXD/HSDA P6.6/DA12
R113 2K/6
43 27
HSYNC P6.0/AD0
R98 33/6
44 26
VSYNC P6.1/AD1
5
NC
MUTE
37 6
P4.1/HBLANK NC
INVCTRL
36
P4.0/VBLANKK
9
P6.3/AD3
16
P6.2/AD2
SS0003
19 30
P3.2/INT0 P6.4/DA10
31
P6.5/DA11
15 42
P4.2/STOUT P5.3/DA3
41
P5.4/DA4
40
P5.5/DA5
R60 100/6
11 39
X2 HALFV/DA8
X2
12 10
X1 VSS
11.0592MHz
MTV312
CN6 CONN 4x2-R
1 2
3 4
5 6
8
10K/6
2
C101
1U/6
Confidential - Do Not Copy
62
R35 R36
2K/6 2K/6
R46 100/6
SCL_1
LED_G
SDA_1
R47 100/6
LED_R
VCPU VDD3V3
L19
1 2
0/8/NC
DOWN C48 C49
UP R52 R88
10K/6
0.1U/6 22U/25V
10K/6
R89 100/6 PC5V_OFF
VDDCTRL_2 6
R56 10K/6
VDD3V3
R55 10K/6
VDD3V3
R57 0/6/NC
VDDCTRL_1 6
PWR_SEL
RESET 4
DEBUG PORT
VCPU
R42 NC
RIGHT
LEFT
VDD3V3
HP-MCU 3
D36
LED_R
LED_G
STBY 7
R61 10K/6 RIGHT_O
3
VCPU
DAN217K/NC
12Vin
GND
VDD3V3 VDD3V3
R65
10K/6
1K/6 R68
Q3 INVCTRL
L22 MMST3906
1
C64 R69
0.1U/6
10K/6/NC
VDD3V3
R70
1K/6
R71 4.7K/6
C65
1U/8
Q5 R62 2K/6
2
2N3904
VX912
VDD3V3
VDD3V3
R37 R38 R39 R40 R99 R100
Q1
10K/6 MMST3906 10K/6
33K/6 33K/6 33K/6 33K/6
Q2 MENU
R96 4.7K/6 MMST3906 SEL
PWR
DOWN
R97 4.7K/6 UP
RIGHT
LEFT
modify debug port
VDD3V3
CN5
4
4
SCL-VGA
3
3
SDA-VGA
2
2
1
1
JWT-A2001WV2-06/NC
2.0mm pitch
90° E&T
VDD3V3 VDD3V3 VDD3V3
D37 D24 D25
LEFT_O PWR_O MENU_O
3 3 3
DAN217K/NC DAN217K/NC DAN217K/NC
DSUB_5V
R91
4.7K/6
PC5V_OFF
VCC12
R94
6.8K/6
PWR_SEL
R112
2K/6
Title
MCU & BUTTON
BRIGHTNESS 4
Size Document Number
Date: Thursday, February 19, 2004
R101 R105 R106
33K/6 33K/6 33K/6
CN4
L37 1K/6 MENU_O
1 2
10
L38 1K/6 SEL_O
1 2
9
PWR_O
L39 1K/6
1 2
8
L14 1K/6 DOWN_O
1 2
7
L15 1K/6 UP_O
1 2
6
L40 1K/6 RIGHT_O
1 2
5
L41 1K/6 LEFT_O
1 2
4
L16 200/6
1 2
3
L17 200/6
1 2
2
1
4501-10-10P-R
TO BUTTON BOARD
VDD3V3 VDD3V3 VDD3V3
D33 D34 D35
SEL_O UP_O DOWN_O
3 3 3
DAN217K/NC DAN217K/NC DAN217K/NC
Q10
VDD3V3
MMST3906
R90
10K/6
R114
3.3/6
Q11
MMST3906
R111 47/6
VCPU
R92 D30
3.3V
2K/6
R93
Q12
2
2N3904
1K/6
Rev
DISPLAY B
Sheet 5 of 8
D