Ps422A - Citizen CBM-710/720 Service Manual

4-8. Circuit Diagram: RS422A
CN2 CN3
CBM710/720-008-00
1
3
3
1
2
2
5
FG
SOL 1
14
SOL 2
6
SOL 3
13
SOL 4
CN4 7
SOL 5
12
SOL 6
4
17P
SOL 7
11
SOL 8
5
SOL 9
3
VP
1, 8, 9, 10
15
MOTOR
2
CCSOL
LFSOL
R17 100
1
2
3
CN5
4
5
9P 6
7
8
9
1
CN5
5
C16 471
4
C17 471
7P
6
7
2
VP
CN7
2
1
2P
Tr6
2SB731
1
Tr7
2SD809(1)
CN8
4P
Tr10
2SB731
2
Tr11
2SD809(1)
3
4
Vcc 18
IC14 SN75113N ( )
60.8
12
9 12 13
RD R32 10
13
13
10
6 5
SD R33 10 14
13
11
15
Vcc 11
13
R35 4.7K
C20 101
IC15 SN75175N ( Vcc 18 )
10
60.8.12
R38 4.7K 1
3
4
3
–
R37 4.7K
2 13
+
C21 10 R34
4.7K
GND
4
R38 4.7K
R39
Vcc
47K
–
NC
+
R40
47K
Vcc
RA2 8-10K
DS2
Vcc
TA1
Vcc
2
HA13408
1 4
01 I1
3 6
2 2
7
8
3 3
9 10
4 4
11 12
5 5
15 14
6 6
17 16
7 7
21 18
8 8
23 20
9 9
IC8LS04 RA2 9-10K
15, 13
19, TAB 22
Vcc
RA4
TA2STA403A
RA3
4-1K 1
3 2 2 9-10K
01 I1 8
5 4 4 3
8
2 2
7 6
6
8
3 3
Vcc
5
IC11 741S14
Vcc
RA3
Tr101
C2785
C12 11
R102
102 4
3
3.3K
Tr102
11
C2785
6
C13 5
102 R103
3.3K
11
C14 2
103
1
Tr103
11
C2785
8
Vcc
Vcc
9
R104
102
3.3K
4 3
10
10
6 5
RA4 1K
9 8
04 I4
C102 STA403A
(1/4)
473
VP VP VP
R24
R23
Tr4
10K
4.7K
2SC2785 x 2
R18
R22
4.7K 10K
R19 10K
Tr5
R20 22K
R21
22K
VP VP VP
R31
R30
10K Tr8
4.7K
2SC2785 x 2
R25
R29
4.7K 10K
R26 10K
Tr9
R27 22K
R28
Vcc
22K
R101 1K
11
11 10
C18
103
34
(PE)
Vcc CN9
2 3 1
R15
3.3K
Vcc
R13
68K
Tr3
R12
2SC2758
180
C11
101RH C9
R14
C10 103
x 2 33K
OSC1737
IC7
1/2LS139
2
4
A0 Y0
3
Vcc 5
A1 Y1
6
R161M
Y2
30 31
7
Y3
NC 60 XIN XOUT
1.8
P00
61
ICI
1
IC4
62
2 50734SP
63 LS373
3
1
3
58 2
4 1D 1Q
2
AD0
18 19
57
5 8D 8Q
3 1
4 5
56
2D 2Q
6
2
55 17 16
7D 7Q
4
3
7 6
54
3D 3Q
7
4
53 14 15
6D 6Q
5
5
8 9
P10 52 4D 4Q
6
6
1 51 13 12
5D 5Q
7
2 7
E 0Q
8
3
49 11 1
9
4 ALE
10
48
5 A8
11 47
6 9
12
46
7 10
45
11
13 44
P20 12
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
28 39
WR
7
59
33
WD
P40
29
34
RESET
1
35
2
36
3
15
13
12 E
2B
2Y0 2A 16
10 10 11
8 8
9
7
8
11 IC7
8
9
1/2LS139
4 12
1 19
E1 E2
1Q
2Q
3 1 9 11
1Q 1D
2Y1 2A1
13 15 18 2
4Q 4D
1Y1 1A1
5 7 3 17
2Q 2D
2Y4 2A4
11 9 16 4
3Q 3D
1Y2 1A2
5 15
2Y3 2A3
14
6
1Y3
1A3
7 13
2Y2 2A2
12
IC6 8
1Y4 1A4
LS375
RA1
IC5
8-10K
LS240
Vcc
1
10
BZ 2
3P
IC
IC2 27128
20
20
PD4464C
Vcc
10
S1
CE
A0 1 10
9 A0
9
1
27
8 1
8 28
2
V0
7
2
3 7
6 3
6
4
11 4
5 11
5 D0 5
D0
4 12 5
12
1 4
6 1
3 13 6
13
2
7 3
2
25
15 7
15
8 3 25
3
24 16 8
16
4 24
9
4
21 9
17
17
10 5 21
5
23 18 10
18
6
11 23
6
2 11
19
7 19
12 2
7
26 12
13
S2
CE CE W
22
27 27 26
Vcc
Tr1 2SA1175
13 12
8
R10 R9 R8
62K 10K 100
IC
Vcc
3
LS11
4 0.047F
9 C7
N
C8
J2
R11
5
471
10K
C
C101
Vcc Vcc B
Vcc Tr2
471
R3
2SC2785
R6 R5 1K
3
R7 47K 3.3K +
5
Vcc
3.3K 12
+ 2 Vcc
1
1
–
C5
12
C5
2 1
7 6
– 473
3 R4
4 2.2K
IC12
5 PC393
6
7
ZD1
8
RD3.0EL1
DS1
2P
VP
C4 35V 47
Vcc
L1
C3 C1
L2
104 104
C2
16V 100
Vcc
N
J1
C
C19
104
Vcc
R1
1.5K(F)
R2
2.7K(F)
5
CN1
3.4
1
5P
2