Sharp UX-177 Service Manual page 76

UX-177H
IC11: VHiULN2003AN/ (ULN2003)
1C 2C 3C 4C 5C 6C 7C COM
16 15 14 13 12 11 10
1 2 3
1B 2B 3B 4B 5B 6B 7B
IC8: VHiHEF4066BT1 (HEF4066BT)
IN/OUT 1
OUT/IN
OUT/IN 2
OUT/IN 3
OUT/IN
4
IN/OUT
IN/OUT
CONT. B 5
CONT. C 6
IN/OUT
VCC 7
IC4: VHiNJM2902M-1 (NJM2902)
A OUTPUT 1
A
2
A–INPUT
– +
A+INPUT 3
V+ 4
B+INPUT 5
– +
B–INPUT 6
B
B OUTPUT 7
9
4 5 6 7 8
E
14 VDD
IN/OUT
SWA
13 CONT. A
SWD
12 CONT. D
IN/OUT
11
IN/OUT
OUT/IN
SWB
10 OUT/IN
9 OUT/IN
SWC
OUT/IN
8 IN/OUT
14 D OUTPUT
D
13 D–INPUT
+ –
12 D+INPUT
11 GND
10 C+INPUT
+ –
9 C–INPUT
C
8 C OUTPUT
IC2: VHi27C1000PC5
ONE time ROM
(TOP VIEW)
VPP 1 32
A16 2 31
A15 3 30
A12 4 29
A7 5 28
A6 6 27
A5 26
7
A4 8 25
A3 9 24
A2 10 23
A1 11 22
A0 12 21
DQ1 13 20
DQ2 14 19
DQ3 15 18
GND 16 17
IC2: VHiNJM2903M/ (NJM2903)
1
A
2
- +
B
3
+ -
4
IC104: VHiPST591CMT1 (PST591C)
8 – 5
VCC
Pin name Signal
PGM
A0~A16 Address input
E Chip enable
NC
G Output enable
A14
GND Ground
A13
NC No connection
PGM Program
A8
DQ1~DQ8 Data output (Program input)
A9
VCC +5V power
VPP +12.5V power (*)
A11
G
(*) Only in the program mode
A10
E
DQ8
DQ7
DQ6
DQ5
DQ4
1. A OUTPUT
8
2. A- INPUT
3. A+ INPUT
7
4. V-
5. B+ INPUT
6
6. B- INPUT
7. B OUTPUT
5
8. V+
4 3 Lot No.
5 9 1 C
1 2
3 VCC
DELEY
OSC
T Q
R 1 VOUT
4 GND
2 MANUAL
RESET