Sony BVS-A3232 Maintenance Manual page 85

MAX202CSE (MAXIM)
MAX202CSE-TE2
RS-232 TRANSMITTER/RECEIVER
— TOP VIEW —
1
C1
V
CC
+
C1 1 16
3
(+5 V)
C1
4
C2
+
V 2 15
GND
5
C2
C1 – 3 14 T1
OUT
11
T1
10
T2
C2 + 4 13 R1
IN
13
R1
C2 – 5 12 R1
OUT
8
R2
–
V 6 11 T1
IN
R1, 2
T2 7 10 T2
OUT IN T1, 2
R2 8 9 R2
IN OUT
0.1 µF INPUT
+
1
+
+5 V to +10 V
0.1 µF
VOLTAGE DOUBLER
3
+
4 +10 V to –10 V
0.1 µF
VOLTAGE INVERTER
5
+5 V
400 K
11
T1
+5 V
TTL/CMOS
INPUTS
400 K
10
T2
12
TTL/CMOS
OUTPUTS
9
MC14495P1 (MOTOROLA)
C-MOS BCD-TO-SEVEN-SEGMENT 4-BIT LATCH / DECODER DRIVER
-TOP VIEW-
V
DD
e 1 16
OUT
(+4.5 to +16V)
f 2 15 d
OUT OUT
g c
OUT 3 14 OUT
h+i b
4 13
OUT OUT
A 5 12 a
IN OUT
B 6 11 VCR
IN IN
CK 7 10 D
IN IN
8 9 C
IN
GND
INPUTS OUTPUTS
CK D C B A a b c d e f g h+i VCR
0 0 0 0 0 1 1 1 1 1 1 0 0 Z
0 0 0 0 1 0 1 1 0 0 0 0 0 Z
0 0 0 1 0 1 1 0 1 1 0 1 0 Z
0 0 0 1 1 1 1 1 1 0 0 1 0 Z
0 0 1 0 0 0 1 1 0 0 1 1 0 Z
0 0 1 0 1 1 0 1 1 0 1 1 0 Z
0 0 1 1 0 1 0 1 1 1 1 1 0 Z
0 0 1 1 1 1 1 1 0 0 0 0 0 Z
0 1 0 0 0 1 1 1 1 1 1 1 0 Z
0 1 0 0 1 1 1 1 1 0 1 1 0 Z
0 1 0 1 0 1 1 1 0 1 1 1 1 Z
0 1 0 1 1 0 0 1 1 1 1 1 1 Z
0 1 1 0 0 1 0 0 1 1 1 0 1 Z
0 1 1 0 1 0 1 1 1 1 0 1 1 Z
0 1 1 1 0 1 0 0 1 1 1 1 1 Z
0 1 1 1 1 1 0 0 0 1 1 1 1 O
X X X X X X X X X X X X Z/O
1 X X X X X X X X X X X X Z/O
0 ; LOW LEVEL
1 ; HIGH LEVEL
X ; DON'T CARE
Z ; HIGH IMPEDANCE
BVS-A3232/V3232
2
+ V +
–
6
+ V –
–
14
T1
7
T2
12
R1
9
R2
; RECEIVER 1, 2
; TRANSMITTER 1, 2
+5 V 0.1 µF
6.3 V
+
16
2 +10 V
–10 V
6
0.1 µF
16 V
+
14
RS-232
OUTPUTS
7
13
R1
5 K
RS-232
INPUTS
8
R2
5 K
15
5 12
A a
6 13
B
b
9 14
C c
10 15
D d
1
e
2
f
3
g
7 4
h+i
11
VCR
a
f b
g
e c
d
DISPLAY
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
DATA LATCH
DATA HOLD
MC14555BF (MOTOROLA)FLAT PACKAGE
MC14555BFEL
C-MOS BINARY TO 1-OF-4 DECODER/DEMULTIPLEXER
–TOP VIEW–
V
DD
EN 1 16
(ENABLE) IN
(+3 to +18V)
A 2 15 EN
(SELECT) IN (ENABLE) IN
B 3 14 A
(SELECT) IN (SELECT) IN
Y0 4 13 B
OUT (SELECT) IN
Y1 5 12 Y0
OUT OUT
Y2 Y1
OUT 6 11 OUT
Y3 Y2
7 10
OUT OUT
8 GND 9 Y3
OUT
MC74HC688N (MOTOROLA)
TC74HC688AP
C-MOS 8-BIT EQUALITY DETECTOR
-TOP VIEW-
2
V
DD
G 1 20
4
( +2 to +6V )
6
P0 2 19 P=Q
8
11
Q0 3 18 Q7
13
15
P1 4 17 P7
17
Q1 5 16 Q6
3
5
P2 6 15 P6
7
9
Q2 7 14 Q5
12
14
P3 8 13 P5
16
18
Q3 9 12 Q4
10 GND 11 P4
17
P7
18
Q7
15
P6
16
Q6
13
P5
14
Q5
11
P4
12
Q4
8
P3
9
Q3
6
P2
7
Q2
4
P1
5
Q1
2
P0
3
Q0
1
G
2 4
A Y0
3 5
B Y1
6
Y2
7
Y3
EN
1
14 12
A Y0
13 11
B Y1
10
Y2
9
Y3
EN
15
INPUTS OUTPUTS
EN B A Y3 Y2 Y1 Y0
0 0 0 0 0 0 1
0 0 1 0 0 1 0
0 1 0 0 1 0 0
0 1 1 1 0 0 0
1 X X 0 0 0 0
0 ; LOW LEVEL
1 ; HIGH LEVEL
X ; DON´T CARE
P0
P1
P2
P3
P4
P5
P6
P7
19
P=Q
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
G
1
INPUTS OUTPUT
P, Q G P=Q
P=Q 0 0
19
P=Q
P>Q 0 1
P<Q 0 1
X 1 1
0 ; LOW LEVEL
1 ; HIGH LEVEL
X ; DON'T CARE
IC
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