Read Sharp ER-A850 (serv.man3) Service Manual online
RS
232C DRI
V
E
R/
RE
CE
IV
E
R
3/
5
FL
4
2
22
C
1
0
3
0.
1u
C1
1
2
0.
1
u
C
105
0.
1
u
C1
+
12
C1
-
14
C2
+
15
C2
-
16
T1
IN
7
T2
IN
6
T3
IN
20
T4
IN
21
R1
OUT
8
R2
OUT
5
R3
OUT
26
R4
OUT
22
R5
OUT
19
EN-
24
V+
13
G N D
1 0
V C C
1 1
V-
17
T1
O
U
T
2
T2
O
U
T
3
T3
O
U
T
1
T4
O
U
T
28
R1
IN
9
R2
IN
4
R3
IN
27
R4
IN
23
R5
IN
18
SH
D
N
25
IC
4
MA
X
2
1
1
VC
C
C
104
0.
1u
FL
2
2
22
FL
5
2
22
5
9
4
8 3 7
2
6
1
RS CN1
D-
S
U
B 9
TD
1
RI
1
DT
R1
CT
S1
RT
S1
RD1 DSR1
CD1
FL
6
2
22
FL
7
2
22
FL
3
2
22
C1
1
3
0.
1
u
RXD1 DSR1
-
CT
S
1
-
DCD1
-
RI
1
-
T
X
D
1
/CRB7
-
DT
R1
-/
CRB3
-
RT
S1
-/
CRB4
-
TX
D
1
DT
R1
-
RT
S1
-
RXD1
DSR1
-
CT
S1
-
DCD1
-
RI
1
-
RI
1
VC
C
J1
3X
1
IF
1
IC
PS1
.0
VCC
FL
8
2
22
FL
1
2
22
FL
21
2
2
2
FL
22
2
2
2
FL
19
2
2
2
VC
C
C
122
0.
1u
C
121
0.
1
u
C
1
23
0.
1
u
C1
+
12
C1
-
14
C2
+
15
C2
-
16
T1
IN
7
T2
IN
6
T3
IN
20
T4
IN
21
R1
OUT
8
R2
OUT
5
R3
OUT
26
R4
OUT
22
R5
OUT
19
EN-
24
V+
13
G N D
1 0
V C C
1 1
V-
17
T1
O
U
T
2
T2
O
U
T
3
T3
O
U
T
1
T4
O
U
T
28
R1
IN
9
R2
IN
4
R3
IN
27
R4
IN
23
R5
IN
18
SH
D
N
25
IC
7
MA
X
2
1
1
RXD2
T
X
D
2
/CRB0
-
DT
R2
-/
CRB2
-
RT
S2
-/
CRB1
-
TX
D
2
DT
R2
-
RT
S2
-
RXD2
C1
2
5
0.
1u
C
1
26
0.
1u
FL
23
2
2
2
FL
24
2
2
2
TD
2
RI
2
DT
R2
CT
S2
RT
S2
RD2 DSR2
CD2
5 9
4
8 3
7
2 6
1
RS CN2
D-
S
U
B 9
FL
20
2
2
2
FL
25
2
2
2
FL
18
2
2
2
RI
2
J2
3X
1
VC
C
DSR2
-
CT
S
2
-
DCD2
-
RI
2
-
DSR2
-
CT
S2
-
DCD2
-
RI
2
-
IF
2
IC
P
S
1
.0
VCC
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
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