Sharp FO-1850 Service Manual page 92

FO-1850TH
IC13, 105: VHiNJM2902M-1 (NJM2902M)
A OUTPUT 1
A-INPUT 2
–
A+INPUT 3
4
V+
B+INPUT 5
–
B-INPUT 6
B OUTPUT 7
IC14: VHiHEF4066BT1 (HEF4066)
IN/OUT 1
OUT/IN
OUT/IN 2
OUT/IN 3
OUT/IN
IN/OUT 4
IN/OUT
CONT. B 5
CONT. C 6
IN/OUT
VCC 7
IC101: VHiMC74HCU04F (MC74HCU04F)
VCC 6A 6Y
14 13 12
1 2 3
1A 1Y 2A
14 D OUTPUT
A D
13 D-INPUT
+ + –
12 D+INPUT
11 GND
10 C+INPUT
+ + –
9 C-INPUT
B C
8 C OUTPUT
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
5A 5Y 4A 4Y
11 10 9
4 5 6
2Y 3A 3Y GND
IC2: VHi27C40012MX (27C040)
EP-ROM
VPP 1
A16 2
A15 3
A12 4
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
A1
11
A0 12
DQ1 13
DQ2 14
DQ3 15
GND 16
IC100: VHiNJM2903M/-(NJM2903M)
1
2
3
4
IC103: VHiPST591CMT1 (PST591C)
8
7
8 – 5
(TOP VIEW)
32 VCC
Pin name
31 PGM
A0~A17
E
30 NC
G
29 A14
GND
28 A13
PGM
DQ1~DQ8
27 A8
VCC
26 A9
VPP
25 A11
(*) Only in the program mode
24 G
23 A10
22 E
DQ8
21
20 DQ7
19 DQ6
18 DQ5
17 DQ4
8
A
7
- +
B
6
+ -
5
4 3 Lot No.
5 9 1 C
1 2
DELEY
OSC
T Q
R
Signal
Address input
Chip enable
Output enable
Ground
Program
Data output (Program input)
+5V power
+12.5V power(*)
1. A OUTPUT
2. A- INPUT
3. A+ INPUT
4. V-
5. B+ INPUT
6. B- INPUT
7. B OUTPUT
8. V+
3 VCC
1 VOUT
4 GND
2 MANUAL
RESET