Sharp AR-BC320, Service Manual, Page: 288 / 344

AR-BC320 ELECTRIC DIAGRAM 13 - 2
B. ICU PWB
ICU PWB
IC
U
-I/
O
AS
IC
IC
5
6
U
P
D
6
5
9
4
9
G
D
IC
U
A
S
IC
IC
3
3
UP
D8
5
6
7
2
S
1
LE
D
A
S
IC
IC
2
4
U
P
D
6
59
46
G
RT
C
IC
6
3
N
JU
6
3
5
6
CP
U
IC
5
4
S
H
77
09
A
ST
D
. M
E
M
O
R
Y
SL
O
T
(2
5
6
M
B
)
D
IMM2
O
P
T
. ME
MO
R
Y
S
L
O
T
(1
28
or
25
6M
B
)
D
IMM1
BUF FE R
IC53 LC X2 44
Q105 to Q1 08
DTC114
F
IRM
W
A
RE
U
P
D
A
T
E
CON
N
ECT
O
R
CN
1
8
T
S
C
7
68
-0
1
PRIN TE RI /F CO NN EC TO R
CN17 TX 25-1 00P
CO
O
L
IN
G
F
A
N I
/F
CON
N
ECT
O
R
C
N
2
0
B3
B-P
H
-K
-S
IM
A
G
E P
A
T
H
SW
IT
C
H
IC
1
0
2
t
o
1
0
8
LC
X
2
4
4
PC
U
I
/F
C
O
N
N
E
C
T
O
R
CN
1
6
28
FM
Z
-B
T
EEP
R
OM
IC
5
0
H
N
5
8
C
2
5
6
AP
P
R
OGR
A
M
FL
A
S
H
SO
C
K
E
T
2
DO
WNL
O
A
D
F
L
A
S
H
SO
C
K
E
T
3
A (M
F
P
)
B (
P
C
U
)
PR
T
C
OP
E
RI
C
B( PC U)
( B
U
FF
ER
)
LC
X
1
4
& T
r
BU
F
F
E
R
IC
2
9
LC
X1
4
AD
D
R
E
S
S
&
D
A
T
A
BUS
B
U
F
F
E
R
s
IC
75
, 7
6
, 74
L
C
X
2
44
IC59, 57, 60, 61, 58 LCX245
12
8M
b
it
S
D
R
A
M
IC
5
5
BUF
F
E
R
s
IC
1
8
, 8
, 1
7
, 7
,
4
, 2
7
, 3
, 2
6
L
C
X
2
4
4
CONN EC TO R( K)
CN6 B22B -P HD SS -B
CON NE CT OR (C )
CN5 B22B -P HD SS -B
CON NE CT OR (M )
CN4 B22B -P HD SS -B
CONN EC TO R( Y)
CN9 B22B -P HD SS -B
MF
P
/
O
P
E
I/
F
CO
N
N
E
C
T
O
R
CN
13
B
2
4B
-P
H
D
S
S
LV
D
S
R
E
C
E
IV
E
R
IC
3
2
D
S
9
0
C
F
3
6
4
A
MT
D
MF
P
-L
V
D
S
I/
F
CO
N
N
EC
T
O
R
CN
1
0
B
1
4
B
-P
H
D
S
S
FP
GA
IC
10
9
E
P
M
3
03
2A
BUF
F
E
R
LC
X1
4
&
T
r
A( MF P)
MF
P
BU
F
F
E
R
IC
6
9
LC
X2
4
4
K
CM
Y
KCM Y
KC
MY
CO
M
P
. /
D
E
C
O
M
P
. CH
IP
(f
o
r B
/W
. J
B
IG
/M
M
R
)
IC
4
8
P
M
-2
5
0
0
K
16
64
BU
F
F
E
R
IC
6
9
LC
X2
4
4
12
RG
B / K
SWIT CH
IC1 06 to 108
LCX 244
TIMIN G-L ED AS IC
TI
M
IN
G
-L
E
D
A
S
IC
TI
M
ING
-I
C
U
A
S
IC
CP
U
U
A
R
T
PR
T
C
I/
O
PR
IN
T
D
A
T
A
SC
A
N
N
E
R
D
A
T
A
MF
P
LE
D
H
E
AD
PC
U
PR
T
C
CPU UA RT
OPE
(P
C
)
FA
N