ViewSonic VP191b-1 Service Manual page 78

2
2
3 ROTATE
Option for Pivot SW
+3.3VD
C175
R120
0.1uF
NC
RP14
10k
JP10
12
KMENU
11
KSELECT
10
9
KDOWN
8
KUP
7
6
KLEDG
5
KLEDR
4
3
KPWR
2
1
HEADER 12-2.0 C168 C169 R125
0.1uF 0.1uF 510R
(KEYPAD)
JP11
KMENU
10
KSELECT
9
8
KDOWN
7
KUP
6
5
KLEDG
4
KLEDR
3
2
KPWR
1
SMD
ViewSonic Corporation
C160
R96 R97
0.1uF
2.2K 2.2K
R100
100 GND
SCL_IN1
R101 100
SDA_IN1
U15
1
A0
2
A1
3
A2
4
GND
PCB2421
+3.3VD
R106 C177
GND
510
0.1uF
R107
JP9
10k
2 1
4 3
Ball Switch
2 HS_DSUB1
2 VS_DSUB1
RP15 1k
1 8
2 7
3 6
4 5
R122
R123
R124 1k C167
R126 0.1uF
510R
CP14
NC
Confidential - Do Not Copy
75
D5
DSUB1_5V BAV70 +5V
SOT23
2 1
3
R98
100
2 SCL_IN2
R99 100
2 SDA_IN2
8
VCC
R104 0
7
WP
6
SCL DDCSCL1
5
DDCSDA1
SDA
R105 0
C174 0.1uF
+3.3VD R108
R109 10K 4.7K
R110 Q6
MUX_SEL
2,3 DTC144
C161
0
0.1uF
R111 NC
U16A
R112 33 R113
2 3
2 HS_DSUB2
R114 C163 74LVC126 R115
2.2K 47pF 2.2K
U16C
R116 100 R117
9 8
2 VS_DSUB2
R118 C165 74LVC126 R119
2.2K 47pF 2.2K
R121 NC
MENU 3
SELECT 3
DOWN 3
UP 3
100R
LEDG 3
LEDR 3
100R
PWR_SW 3
VP191b/s
D4
DSUB2_5V BAV70 +5V
SOT23
2 1
3
C159
R94 R95
0.1uF
2.2K 2.2K
GND
U14
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
GND SDA
PCB2421
3
3
GND
+3.3VD
74LVC126
PIN14
C162
22pF
U16B
33 R130 33
5 6
HS
C164 74LVC126
C178
47pF
22pF
U16D
100 R131 33
12 11
VS
C166 74LVC126
C179
47pF
22pF
Title
KEYPAD & DDC
Size Document Number
VP191 for FJ-11AA
Date: Tuesday, October 12, 2004
R102 NC
DDCSCL2
3
DDCSDA2
3
R103 NC
3
3
Rev
C
Sheet 6 of 6