Sharp FO-475TH Service Manual page 73

UX-258TH
FO-475TH
IC11, 12: VHiLM2902D/-1 (LM2902D)
1
A OUTPUT
A
2
A-INPUT
+
–
A+INPUT 3
V+ 4
B+INPUT 5
– +
B-INPUT 6
B
B OUTPUT 7
IC5: VHiHEF4051BT1 (HEF4051BT)
6
11
Controls
10
9
13
14
15
12
Switches
In/Out
1
5
2
4
IC100: VHiPST596CMT1 (PST596CNR)
M/R 1
SUB 2
GND 3
(TOP VIEW)
14 D OUTPUT
D
13 D-INPUT
+ –
12 D+INPUT
11 GND
10 C+INPUT
+ –
9 C-INPUT
C
8 C OUTPUT
Inhibit
A
B
C
X0
X1
15 Common
X
Out/In
X2
X3
X4
X5
X6
X7
VDD: Pin 16
VSS: Pin 8
VEE: Pin7
5 VCC
4 VOUT
IC8: VHi27C02015Ti (27C020)
EP-ROM
(TOP VIEW)
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
IC4: VHiMC34119DR2 (MC34119DR2)
CD
FC2
FC1
VIN
8 – 5
32 VCC
Pin name
31 PGM
A0~A16
Address input
E
Chip enable
30 NC
G
Output enable
29 A14
GND Ground
28 A13
PGM Program
DQ1~DQ8 Data output (Program input)
27 A8
VCC +5V power
26 A9
VPP
+12.5V power(*)
25 A11
(*) Only in the program mode
24 G
23 A10
22 E
21 DQ8
20 DQ7
19 DQ6
18 DQ5
17 DQ4
1 8
2 7
3 6
4 5
(TOP VIEW)
Signal
VO2
GND
VCC
VO1