AOC A20S431, Service Manual

Page: 57 / 70

AOC A20S431
56
MC U _ VS
R STN
C 4 1 5
1 n
R 4 3 3 1 0 0
Q 4 0 2
MMBT3 9 0 4
1
3
2
R 4 2 1
2 k
MC U _ VD D
AD 0
MC U _ VD D
MCU
0 .2
MFM
A3
4 8 Mo n d a y , Se p te mb e r 1 2 , 2 0 0 5
Title
Siz e D o c u me n t N u mb e r R e v
D a te : Sh e e t o f
D G N D
D G N D
M_ TXD
C 4 0 8
1 0 0 p
R 4 3 6 1 0 0
R 4 3 8 1 0 0
VG A_ D ET
R XD
C 4 0 4
2 2 p
TXD
BL _ EN
AD 1
D D C _ SD A
C 4 0 1
1 u
D G N D
SEL 1
VO L U ME
C N 1 0 5
4 PIN /2 .0 mm
1
2
3
4
C 4 0 5
2 2 p
R 4 2 4
6 .8 k
C 4 1 2
1 n
X4 0 1
1 2 MH z R 4 1 1 1 0 0
C 4 0 3
0 .1 u
R 4 1 4
2 k
TXD
R 4 0 4
4 7 k
R 4 3 2 1 k
R 4 4 1
1 0 k N C
R XD
R 4 1 3
1 0 0
R 4 1 8
2 k
5 V
R 4 3 5 1 0 0
R 4 0 3
4 7 k
D G N D
R 4 3 1 1 k
D G N D
5 V
D D C _ SC L
R 4 1 7
4 .7 k
D G N D
TO RS232
D G N D
W P
R 4 1 5
2 k
PW R
D G N D
PW R _ L ED A
C 4 1 6
1 n
R 4 2 3
4 .7 k
AD 1
D 4 0 1
1 N 4 1 4 8
5 V
R 4 2 9
7 .5 k
STAN D BY
PW R _ L ED G
D G N D
TO DEBUG
5 V
D 4 0 3
1 N 4 1 4 8
D G N D
5 V
R 4 3 7 1 k
C N 1 0 7
6 x 2 PIN /2 .0 mm
1
3
5
7
9
1 1 2
4
6
8
1 0
1 2
D G N D
SD A
R 4 4 2
1 0 k N C
ZD 4 0 4
5 .6 V
R 4 1 0 1 0 0
IR _ IN
R 4 3 9 1 0 0
R 4 0 9
1 M
R 4 0 6
1 K
IR _ IN
C N 1 0 6
3 PIN /2 .0 mm
1
2
3
5 V
BL _ BR IG H T
R 4 2 6
4 .7 k
R 4 0 2
4 .7 k
1 2 M_ O SC
SEL 2
H SO
MU TE
PW R _ L ED A
R 4 0 8 1 0 0
ZD 4 0 5
5 .6 V
ZD 4 0 1
5 .6 V
MC U _ VD D
SC L
SD A
D D C _ SD A
W P
R 4 0 7
1 0 0 k
IIC SC L
PW R _ L ED G
R 4 2 8
7 .5 k
R 4 0 5
1 0 0 k
R 4 3 0
N C
C 4 1 4
1 n
C 4 1 1
1 n
ZD 4 0 3
5 .6 V
C 4 1 0
0 .2 2 u
R 4 0 1
1 k
5 V
IIC SD A
R 4 1 2
1 0 0
R 4 3 4 1 0 0
C 4 0 7
1 0 0 p
D G N D
5 V
SC L
PW R 2 _ EN
D D C _ SC L
SC L
ZD 4 0 6
5 .6 V
D D C _ VD D
Q 4 0 1
MMBT3 9 0 4
1
3
2
MC U _ VD D
TU N ER _ C TR L
D G N D
R 4 2 0
2 k
C 4 1 3
1 n
M_ R XD
R 4 2 5
1 5 k
R 4 1 9
2 k
U 4 0 5
AT2 4 C 1 6
1
2
3
4
5
6
7
8
A0
A1
A2
G N D
SD A
SC L K
W P
VC C
VD _ R ST
SD A
U 4 0 2
N T6 8 F6 3 2 A
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
4 3
4 2
4 1
2 2
4 4
4 0
3 7
3 6
3 5
3 4
3 3
3 2
3 1
3 0
2 9
2 8
2 7
2 6
2 5
2 4
2 3
3 9
3 8
PC 2 /SO G I
PC 1 *
PC 0 *
R STB
VC C
PD 6
G N D
O SC O
O SC I
P3 0 /R XD
P3 1 /TXD
P3 4 /T0
P3 5 /T1
PB3 /AD C 3 /IN TE1
PB2 /AD C 2 /IN TE0
PB1 /AD C 1
PB0 /AD C 0
PA7 /PW M9 *
PA6 /PW M8 *
PA5 /PW M7 *
PA4 /PW M6 *
H SYN C I
PC 3 /PW M0
PC 4 /PW M1
PA3 /PW M5
VSYN C I
PC 5 //PATTO
PC 6
PC 7
PD 0
PD 1 /H SYN C O
PD 2 /VSYN C O
PD 3 /H AL FO
PD 4 /H AL FI
PD 5 /C L MPO
PA0 /PW M2
PB4 /ISC L 0 *
PB5 /ISD A0 *
PB6 /D SC L 1 *
PB7 /D SD A1 *
PA1 /PW M3
PA2 /PW M4
PE1
PE0
R 4 2 2
1 k
KEYPAD
CONNECTOR
D 4 0 2
1 N 4 1 4 8
R 4 1 6
4 .7 k
ZD 4 0 2
5 .6 V
MC U _ VD D
D G N D
R 4 4 0 1 0 0
VD _ PW R _ EN
MC U _ H S
PW R
MC U _ VD D
C 4 0 6
1 0 0 p
D G N D
C 4 0 9
1 u
+
C 4 0 2
1 0 0 u /1 6 V
TU N ER _ D ET
R 4 2 7 N C
D G N D
AD 0