ViewSonic VP720B Service Manual - Page 83

Cu & Keypad

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10.5. MCU & KEYPAD MCU_VCC 5VCC MCU_VCC P107 8 7 6 5 4 3 2 1 CON8 R170 R171 R172 R173 R174 R175 R176 R177 R180 R181 R182 R183 33K 33K 33K 33K 33K 2 Q106 2N3906 1 3 1K POWER_KEY 200 200 1K 1K 1K 1K C221 C224 C225 C226 C227 UP_KEY 0.1u 0.1u 0.1u 0.1u 0.1u 3 R184 10K R185 10K 2 Q107 2N3906 1 R199 4.7K R195 4.7K LED_R LED G 2 D115 NC/1N4148 3.3VCC 1 R139 NC/0 1 2 Q108 NC/MMBT3906 + C119 NC/10uF_16V 3 RESET + C234 10uF_16V R208 2K 1 2 D118 NC/1N4148 MCU_VCC MCU_VCC R186 4.7K IICSDA IICSCL C228 I107 8 5 6 4 5DVCCTEST SDA A2 SCL A1 GND A0 X24LC16 100nF 7 3 2 1 Volume DDC1_SCL DDC1_SDA STANDBY RTD_SDIO DVI_CONNECT_MCU VGA_CONNECT_MCU IICSCL IICSDA RESET_MCU 1 1 3.3VCC MCU_VCC D116 1N4148 D121 1N4148 2 2 R250 2K R251 1K R196 100 R197 100 R198 100 R200 100 R202 4.7K R188 4.7K R189 4.7K R190 4.7K R191 4.7K R192 4.7K R194 4.7K POWER_KEY MENU_KEY SEL_KEY UP_KEY DOWN_KEY LED G LED_R RST 4 VCC 41 P1.0/ET2 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 40 39 38 37 36 35 34 33 44 45 46 47 48 1 2 3 DA0/P5.0 DA1/P5.1 DA2/P5.2 DA3/P5.3 DA4/P5.4 DA5/P5.5 P5.6/HSCL2 P5.7/HSDA2 5 8 HSCL1/RXD/P3.0 HSDA1/TXD/P3.1 9 10 P3.2/INT0 P3.3/INT1 11 12 13 14 P3.4/T0 P3.5/T1 P7.6/CLKO2 P7.7 MTV512_LQFP NC NC NC NC 32 31 30 29 VSYNC 28 P6.7 P6.6/CLKO1 P6.5 P6.4 27 26 25 24 P6.3/AD3 P6.2/AD2 P6.1/AD1 P6.0/AD0 23 22 21 20 NC NC NC NC NC NC 17 VSS X2 X1 42 43 18 19 6 7 15 16 5VCC BUS_POWER C231 100pF R201 10K I106 MTV512 1 1 D117 D122 1N4148 1N4148 X102 24MHz R209 4.7K R210 4.7K R211 4.7K R212 4.7K R213 4.7K R214 4.7K R215 4.7K R216 4.7K C235 C236 C237 C238 C239 C240 C241 C242 100pF 100pF 100pF 100pF 100pF 100pF 100pF 100pF SDIO0 SDIO1 SDIO2 SDIO3 SDIO4 SDIO5 SDIO6 SDIO7 5VCC MCU_VCC R222 4.7K R223 47 R217 4.7K R218 4.7K R219 4.7K R220 4.7K R221 4.7K C245 0.1u R224 10K C243 C244 100pF 100pF AVS RTD_SCLK RTD_SCSB BKLT-EN PANEL_EN 2 2 DDC2_SCL DDC2_SDA R206 R207 R204 4.7K 100 100 R205 4.7K I104 8 7 6 5 VCC WP SCL SDA A0 A1 A2 GND 1 2 3 4 24C02 C230 100nF R203 C232 10pF 1M C233 10pF ViewSonic Corporation Model MCU & KEYPAD Title Date Rev: ViewSonic Corporation Confidential - Do Not Copy 80 VP720-1_VP720b-1

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10.
5
. M
CU & KEYPAD
MENU_KEY
POWER_KEY
DOWN_KEY
IICSCL
IICSDA
IICSCL
IICSDA
RESET
POWER_KEY
LED G
LED_R
LED G
UP_KEY
SEL_KEY
UP_KEY
LED_R
DDC1_SCL
RESET_MCU
BUS_POWER
DDC2_SCL
Volume
STANDBY
VGA_CONNECT_MCU
DVI_CONNECT_MCU
PANEL_EN
AVS
RTD_SCLK
BKLT-EN
RTD_SCSB
3.3VCC
MCU_VCC
MCU_VCC
MCU_VCC
MCU_VCC
MCU_VCC
3.3VCC
5VCC
MCU_VCC
5VCC
5VCC
R180
33K
R181
33K
R139
NC/0
+
C234
10uF_16V
R222
4.7K
D117
1N4148
1
2
R182
33K
R205
4.7K
R208
2K
R183
33K
R203
1M
R251
1K
R250
2K
R189
4.7K
R188
4.7K
R204
4.7K
R215
4.7K
C235
100pF
C236
100pF
R223
47
R197
100
R220
4.7K
R221
4.7K
R175
1K
R190
4.7K
R174
1K
C232
10pF
MTV512_LQFP
I106
MTV512
1
2
3
4
5
6
7
8
17
15
41
40
39
38
37
36
35
34
33
19
28
29
20
21
22
23
24
25
26
27
16
9
10
11
12
13
14
18
30
31
32
43
42
44
45
46
47
48
DA5/P5.5
P5.6/HSCL2
P5.7/HSDA2
RST
HSCL1/RXD/P3.0
NC
NC
HSDA1/TXD/P3.1
VSS
X2
VCC
P1.0/ET2
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
NC
VSYNC
NC
P6.0/AD0
P6.1/AD1
P6.2/AD2
P6.3/AD3
P6.4
P6.5
P6.6/CLKO1
P6.7
X1
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P7.6/CLKO2
P7.7
NC
NC
NC
NC
NC
NC
DA0/P5.0
DA1/P5.1
DA2/P5.2
DA3/P5.3
DA4/P5.4
R194
4.7K
C237
100pF
D115
NC/1N4148
1
2
R191
4.7K
C238
100pF
Q107
2N3906
1
2
3
R211
4.7K
C239
100pF
D121
1N4148
1
2
C240
100pF
R199
4.7K
C241
100pF
C243
100pF
C221
0.1u
C242
100pF
D122
1N4148
1
2
C244
100pF
R185
10K
I104
24C02
1
2
3
4
5
6
7
8
A0
A1
A2
GND
SDA
SCL
WP
VCC
R210
4.7K
R184
10K
R196
100
R213
4.7K
D118
NC/1N4148
1
2
R172
200
C245
0.1u
R176
1K
R171
200
R218
4.7K
R219
4.7K
R192
4.7K
C233
10pF
R177
33K
R214
4.7K
R202
4.7K
R207
100
R217
4.7K
Q106
2N3906
1
2
3
R224
10K
R216
4.7K
C230
100nF
C231
100pF
I107
X24LC16
8
5
6
4
7
3
2
1
5DVCC
SDA
SCL
GND
TEST
A2
A1
A0
C224
0.1u
R198
100
R170
1K
R195
4.7K
R209
4.7K
C225
0.1u
R200
100
R201
10K
R212
4.7K
Q108
NC/MMBT3906
1
2
3
R206
100
C226
0.1u
C228
100nF
C227
0.1u
P107
CON8
1
2
3
4
5
6
7
8
D116
1N4148
1
2
R186
4.7K
X102
24MHz
R173
1K
+
C119
NC/10uF_16V
DDC1_SDA
SDIO6
SDIO4
RTD_SDIO
SDIO2
SDIO3
SDIO5
SDIO1
DDC2_SDA
SDIO0
SDIO7
ViewSonic Corporation
Confidential – Do Not Copy
VP720-1_VP720b-1
80
Model
Title
Date
Rev:
ViewSonic Corporation
MCU & KEYPAD