Sharp R-450C, Service Manual

Page: 30 / 36

28
R-450C
6
4 5
1
2
3
6 4 5
1
2
3
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
F
ig
u
re
S3
.
C
PU
.
U
n
it
C
ir
c
u
it
+
–
C
-2
C
-3
C
-1
0
C
-9
C
-1
C
-5
C
-6
C
-7
C
-1
2
C
-8
G
9
G
1
0
G
1
1
G
1
2
G
1
3
G
1
4
G
8
5
4
3
2
1
0
ME
A
T
C
L
O
C
K
H
EL
P
F
R
O
Z
EN
D
IN
N
ER
ST
O
P
C
L
E
A
R
VEG
ET
ABL
ES
PO
W
ER
L
EVEL
L
ESS
PI
Z
Z
A
P
A
ST
A
ME
A
L
D
IN
N
ER
PL
A
T
E
T
IMER
SO
U
P
PI
E
BEVER
A
G
E
R
IC
E/
P
A
ST
A
E
A
SY
D
EF
R
O
ST
C
A
SSER
O
LE
9
8
7
6
G
7
G
6
G
5
G
4
G
3
G
2
G
1
C
-1
1
C
-4
IN
T
G
N
D
C
PU
U
N
IT
VC L
ED
VR
V
A
MI
C
R
O
D
O
O
R
(BR
O
W
N
ER
)
N
O
T
E
N
C
:
IF
N
O
T
SPEC
IF
IED
,
1
/1
0
W
±
5
%
BU
Z
Z
ER
O
VEN
L
A
MP
T
U
R
N
T
A
BL
E
MO
T
O
R
F
A
N
MO
T
O
R
IC
1
IZ
A
9
6
9
D
R
In
d
ica
to
r
C
ircu
it
(
Se
e
F
ig
.
S-4
)
C1 0 4 7
µ
/1 6v
C1 1 0 .1 µ /5 0v
C4 0
0.0 1 µ /2 5v
C6 5 3 30 pF /5 0v
C6 4 3 30 pF /5 0v
C6 3 3 30 pF /5 0v
C6 2 3 30 pF /5 0v
C6 1 3 30 pF /5 0v
C6 0 3 30 pF /5 0v
C1 2
0.1 µ
/5 0v
C1 10
4.7 k
C13
0.0 1 µ
/25 v
C9 2 4 .7 k
C14
0.0 1 µ /25 v
C
20
0.
1
µ
/5
0v
ZD 10
UD Z4. 3B
R1 2
15 k
R1 1
15 k
(J10 ) (J11)
4.7 k
(J13)
4.7 k
(J15)
4.7 k
(J17)
4.7 k
(J12 )
(J14 )
(J16 )
Q
3
0
D
T
A
1
4
3
EK
A
Q
1
1
D
T
A
1
4
3
EK
A
Q
2
0
D
T
A
1
4
3
EK
A
Q
2
1
D
T
A
1
2
3
JK
A
D
2
0
1
SS3
5
5
D
4
1
1
SS3
5
5
LD
10
LD
19
LD
18
LD
17
LD
11
LD
12
LD 16 LD 15 LD 14 LD 13
C
F
1
C
ST
4
.0
0
MG
W
R7 8 2 70 k
R7 9 2 70 k
R7 7 2 70 k
R7 6 2 70 k
R7 5 2 70 k
R7 4 2 70 k
R
4
1
1
5
k
1
3
0
3
1
5
0
5
1
8
0
8
1
1
0
0
R
6
8
1
5
k
R
6
9
1
5
k
R
7
0
1
5
k
R
7
1
1
5
k
R
7
2
1
5
k
R
7
3
1
5
k
C9 3 4 .7 k
Q
10
2S
A
10
37
A
K
R1 0 1 k
R8 0
1M
R66 15 k
R65 15 k
R64 15 k
R63 15 k
R62 15 k
R61 15 k
R60 15 k
R67 15 k
R4 0 4 .7 k
SEG3 5 AN 10
AN 11
AVSS
P10
P11
P12
P13
P14
P15
P16
P17
X 1
X 2
VSS
OSC 2
OSC 1
TEST
RES
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
P91
P90
P87
P86
P85
P84
P83
P76
P75
P74
SEG20
SEG
5
SEG
3
6
SEG
3
7
SEG
3
8
SEG
3
9
SEG
4
0
P4
0
P4
1
P4
2
IR
Q
0
A
VC
C
A
N
0
A
N
1
A
N
2
A
N
3
A
N
4
A
N
5
A
N
6
A
N
7
A
N
8
A
N
9
SEG
4
SEG
3
SEG
2
SEG
1
C
O
M1
C
O
M2
C
O
M3
C
O
M4
VC
C
V
0
V
1
V
2
V
3
VSS
C
VC
C
P3
7
P3
6
P3
5
P3
4
SEG1 9
SEG1 8
SEG1 7
SEG1 6
SEG1 5
SEG1 4
SEG1 3
SEG1 2
SEG1 1
SEG1 0
SEG9
SEG8
SEG7
SEG6
P82
P81
P80
P77
IN
ST
A
N
T
C
O
O
K
ST
A
R
T
KEY
U
N
IT
MO
R
E