ViewSonic N3250w-G VS10769-1G Service Manual page 56

10.5. MCU W79E632
I2C_SCL
I2C_SCL P4,7,8
I2C_SDA
I2C_SDA P4,7,8
P1,2,8,10,11
5VD
C377 20P
R297
1M
C379
C378 20P
10uF/16V
D107 R298
P2 INT
10K
LL4148
P11 POWER_EN
P7,8 ALL_RST
P8 MUTE
P2 HWRESET
P2 ALE
P1 VGA_CAB
P11 PWRON
HPD_CAB
P1,2 HPD_CAB
5VD
I114
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
GND SDA
24LC32/DIP/SN
R323
4.7K
I115
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
GND SDA
24LC04BT/SN//DIP
ViewSonic Corporation
5VD
05 MCU
5VD
5VD RP20
7 5 3 1
5VD
RP 4.7KX4
R296 4.7K
8 6 4 2
C376
0.1U
I113
35 43
EA/VP P0.0
42
P0.1
X103 UCLK
21 41
X1 P0.2
24MHz 40
P0.3
39
P0.4
20 38
X2 P0.5
37
P0.6
36
P0.7
10
RESET
24
P2.0
25
P2.1
INT
14 26
INT0/P3.2 P2.2
IRRCVR1
15 27
INT1/P3.3 P2.3
I2C_SCL
16 28
T0/P3.4 P2.4
I2C_SDA R305 0
17 29
T1/P3.5 P2.5
KEY_LEFT(-)
30
P2.6
KEY_RIGHT(+)
2 31
P1.0 P2.7
POWER_EN
3
P1.1
ALL_RST RD
4 19
P1.2 RD/P3.7
MUTE
WR
5 18
P1.3 WR/P3.6
HWRESET
6 32
P1.4 PSEN
ALE
7 33
P1.5 ALE/P
MTXD
8 13
P1.6 TXD/P3.1
VGA_CAB MRXD
9 11
P1.7 RXD/P3.0
PWRON
1 23
P4.2 P4.0
PWR_SW
12 34
P4.3/ISP P4.1
R306 W79E632A1
0 MPU
*MCU ROM size at
128K byte
R308
4.7k P130=SOCKET
5VD 5VD 5VD
I2C address A0
C389
0.1U
R321 R322
4.7K 4.7K
I2C_SCL
I2C_SCL P4,7,8
I2C_SDA
I2C_SDA P4,7,8
5VD 5VD 5VD
I2C address A4
C390 For HDCP encode
0.1U
key storagy
R325
R324 4.7K
4.7K R326 0
I2C_SCL
I2C_SCL P4,7,8
I2C_SDA
I2C_SDA P4,7,8
R327 0
Confidential - Do Not Copy
53
RP21
7 5 3 1
RP 4.7KX4
8 6 4 2
AD0
AD[0..3] P2
AD1
AD2
AD3
ENTER / PWR_SW
MENU
KEY_DOWN
KEY_UP
G_LED
Y_LED
SELVOUT3 P4
MUTE_AMP
MUTE_AMP P9
SELVOUT2 P4
SELVOUT1 P4
5VD 5VD
RD P2
R310 R309
WR P2
4.7K 4.7K
R318
0 TXD
TXD P1
RXD
RXD P1
R319
0 ON_PANEL
ON_PANEL
R320 ON_PBACK
ON_PBACK
220
C392
10uF/16V
Debug port
5VD
P107
1
2
MRXD
3
MTXD
4
CON_4_2.5mm
C
B E
N3250w-G
1 P 1.1 Power EN ON : L , OFF : H
2 P 1.3 Mute Audio on : H , Audio off : L
3 P 2.3 Mute AMP Audio on : H , Audio off : L
4 P 2.4 SCART2 : H , SCRAT1 : L
5 P 2.5 RCA_AV : H , SCRAT_AV : L
6 P 4.0 PANAL VCC ON : H , PANAL VCC OFF : L
7 P 4.1 PBACK ON : H , PBACK OFF : L
8 P 4.2 VCC+5V_2(STB_5V) ON : H , OFF : L
5VD
R301 R302
470 470
Q101
R304 MMBT3906
4K7
Y_LED Q102
1
MMBT3906
P10
P11
G_LED R307
1
4K7
5VD
IRRCVR1
LED_G
LED_R
PWR_SW
KEY_LEFT(-)
KEY_RIGHT(+)
KEY_DOWN
KEY_UP
ENTER / PWR_SW
MENU
R300
47
R303
10K
C380 C381
47uF/16V
0.1U
P102
1
2
3
4
5
6
C391
6P_2mm
100P
P103
1
2
3
4
5
6
7
7P_2mm