Sharp FO-4650, Service Manual

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FO-4650U
1 2 6
4
3
5
BD
E
F
G
I
H
C
A
BD
E
F
G
I
H
C
A
1 2 6 4 3 5
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9
1 2 3 4 5 6 7 9 10 11
VDD B C GND A D
16 14 13
8
15 12
IC1
LS145
DECODER
+5V
C1
2200P
CNPN-20 CNPN-18 CNPN-16 CNPN-14 CNPN-12
SEN0 SEN1 SEN2 SEN3 SEN4
(2-4I)
LD0 LD1 LD2 LD3
A
I
Q
B J R Z
C
K
S
SPACE
L T
SHIFT
M U
SP
N V
CLEAR
REPORT
O
DOCUMENT
P
LINE
CHANGE-
OVER
D
EF
G
H
SW-A
STOP
WX
RESOLU-
TION
COPY
2
3
FUNCTION
COVER
PRIORITY
START
B’ CAST
5
6
SPEED
DIAL
0
#
SPEAKER
8
9
REDIAL
CNPN-10
SEN5
CNPN-8
SEN6
Y 1 4 7
C2
33/16
(2-4I) (2-4I) (2-4I)
[5] Operation Panel PWB circuit
1/2
Note: Since the parts of this PWB can not be supplied, change it as a unit.
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