Rs232C - Citizen CBM-710/720 Service Manual

4-7. Circuit Diagram: RS232C
CBM710/720-007-00
14
6
13
CN4
7
12
4
17P
11
5
3
1, 8, 9, 10
15
2
1
2
3
CN5
4
5
9P 6
7
8
9
1
CN6
5
4
7P
6
7
2
CN7
2
1
2P
1
CN8
4P
2
3
4
C103 Vcc
233
R43 IC14 JC15
CN2 CN3 MAX232
3.3K
14
6 FAULT 11
12 14 14
12 13
7 PE
11
RESET
8 11 10 9 8 R3410K
23 14 13
2/1PHCI
5 C. BUSY R 2 Tr12 C2785
12
13
01 4
Vcc
15 1 13
C. BUSY
14
R56
11
R37 220
10 R. BUSY 10K
20 14 13
1/2PHCI Tr13 C2785
10
4
D2
9
Vcc
9 3 15
9 CSOR
22
R38
T x D
16
R39 220
10K
2
14 11
SW1-1 15
Vcc
CPD 2/1PHCI
R40 1K
12 8
8
18
CL
R42 100 13 12
13 D3 6 7 13
16 R41 100
C20
C. RDR
RS
103
RC837
14 R. RXD 13 12
3 14
11 GNC
7
Vcc
1
FG
Vcc
C2310
IC14 IC15
1 16 16 1
C25 + C1 + C1 + + C21
V V
3 3
– – 2 – –
C25 C1 V C1 C22
V+ V+
C26 + C2 + C2 + + C22
C27 47
4 4
– – V– V– – –
22 C2 C2 22
5 6 6 5
C24
DS2 RA5 8-10
Vcc
47
TA1
Vcc
2
HA13408
SOL 1 1 4
O1 I1
SOL 2 3 6
2 2
SOL 3 7 8
3 3
SOL 4 9 10
4 4
SOL 5 11 12
5 5
SOL 6 15 14
6 6
SOL 7 17 16
7 7
SOL 8 21 18
8 8
23 20
SOL 9
9 9
IC8LS04 RA2 9-10K
VP
15, 13
22
19, TAB
Vcc
TA2STA403A RA4
RA3
4-1K 1
MOTOR 3 2 2 9-10K
01 I1
8
3
CCSOL 5 4 4
8
2 2
7 6
LFSOL 6
8
3 3
Vcc 5
IC11 741S14
R17 100
Vcc
RA3
THC1 C2785
C12
11
102 R102
3 4
3.3K
Tr102
11
C2785 5
C13 6
102
R103
3.3K
11
C14 103 1
2
Tr103
11
C2785
102 9
8
Vcc Vcc
R104
C15
3.3K
C16 471
4 3
C17 471
10
10
5
6
VP
9 8 RA4 1K
04 I4
STA403A
C102
(1/4)
473
VP VP VP
R24
R23
Tr4
10K
4.7K
2SC2785 x 2
Tr6
R18
2SB731
R22
4.7K 10K
Tr7
2SD809(1)
R19 10K
Tr5
R20 22K
R21
22K
VP VP VP
R31
R30
Tr8
10K
4.7K
2SC2785 x 2
Tr10
R25
2SB731
R29
10K
4.7K
Tr11
R26 10K
2SD809(1)
Tr9
R27 22K
R28
Vcc
22K
R101 1K
11
11
10
C18
103
33
R32
R33
Vcc Vcc
10K 3.3K
Vcc
2 3 1
12
R15
10
3
3.3K
13
R13
68K
Tr3
2SC2753
R14
8 2 1
101RH C9
13
33K
C10
x 2
OSC1737
1/2LS139
2
Vcc
A0
A1
R161M 3
R35 10K
30 31
XIN
60 XOUT
P00
61
SW1-2
1 ICI
62
2
50734SP
63 LS373
3
1 3
58
4 AD0 1D
2 18
57
8D
5 1
3
56 4
2D
6 2
17
55
7D
3
4
54 7
3D
7 4
14
53
6D
5 5
52 8
P10
4D
6 6
13
1 51
5D
7
7
2
8
11
3
49
9
ALE
4
10 48
5 A8
11 47
9
6
12 46
10
7
45
11
44
13
12
P20
43
14
13
1
42
15
14
2
41
16
15
3
17
4
18
5
19
6
20
7
21
P30
22
1
23
2
24
3
25
4
26
5 38
27
RD
6
39
28
WR
7
59
33
WD
P40 29
34
RESET
1
35
2
36
3
12
2Y0
8
10
10 11
8
8
9
7
8
11 8
9
4 12
1Q
E1 E2
3 1 9
2Y1
1Q 1D
13 15 18
1Y1
4Q 4D
5 7 3
2Y4
2Q 2D
16
11 9
1Y2
3Q 3D
5
2Y3
14
1Y3
7
2Y2
12
IC6
1Y4
LS375
IC5
LS240
Vcc
1
10
BZ
2
(PE)
CN9
IC2 27128 IC
20
PD4464C
Vcc
Vcc 10
CE
A0 1
9
1
27
8
R12
2
7
180
3
C11
6
103 4
11
5
D0
5
IC7 4 12
1
6
13
3
4 7 2
25 15
Y0
5 3
8
24 16
Y1
6
9 4
Y2
21 17
7
5
Y3 10
23
18
1.8 11 6
2 19
12 7
26
IC4
13
CE
22
2
1Q
19
8Q
5
2Q
16
7Q
6
3Q
15
6Q
9
4Q
13
5Q
E 0Q
1
Vcc Tr1 2SA1175
15 13 12
13 8 R10
E
2B
62K
IC
2A Vcc
3
16 LS11
4
9
IC7 N
J2
C8
R11
1/2LS139
5
471
10K
C
C101
Vcc Vcc
B
471 Vcc Tr2
2SC2785
R6
R5
47K
1 19 R7 3.3K
5
Vcc
3.3K 12
2Q +
11 1 1
2A1
12 C6
2 2
– 6
1A1 7
473
R4
17 3
2A4 2.2K
4
4 IC12
1A2
15 5 PC393
2A3
6 6
1A3
13
7
2A2
8 8
1A4
RA1
DS1
8-10K
2P
VP
Vcc
C3
104
16V 100
Vcc
20
N
S1
10
J1
A0
9
C
1
28
8
V0
2
7
C19
3
6 104
4
11
5
D0
5
12
4
1
6
13
3
2
7
15
25
3
8
16
24
4
9
17
21
5
10
18
23
6
11
19
2
7
12
CE W S2
27 27 26
R8
R9
100
10K
+
0.047F
C7
Vcc
R1
R3
1.5K(F)
1K
3
+
2 Vcc
R2
–
2.7K(F)
C5
1
ZD1
RD3.0EL1
5
C4 35V 47
CN1
3.4
L1
1
C1
5P
L2
104
2
C2