Sharp R-734 (serv.man4) Service Manual ▷ View online
R-734 - 33
Figure S-1. Pictrorial Diagram
BLK
RED
TC2:
OVEN THERMAL
CUT-OUT
TC1:
MG. THERMAL
CUT-OUT
OL: OVEN LAMP
RED
WHT
WHT
WHT
5
RED
4
3
WHT
2
1
BLK
COM
WHT
WHT
WHT
YLW
RED
BLK
N.C.
N.O.
N.O.
COM
SW3:
STOP
SWITCH
NO
NO
COM
COM
GH: GRILL
HEATING ELEMENT
RED
RED
WHT
BRN
BLU
GRN
GRN
GRN
WHT
TTM:
TURNTABLE
MOTOR
SW2:
MONMITOR
SWITCH
SW1:
MONITORED
LATCH
SWITCH
YLW
BLK
BLK
RED
WHT
CN-A
1
CN-B
2
RED
GRN
RED
BLK
RED
YLW
NOISE FILTER
L
TP
F 8 A
F2:
TL
RED
F1: 20 A
WHT
N
BLK
BLK
WHT
WHT
RED
WHT
FM: FAN
MOTOR
WHT
HIGH VOLTAGE COMPONENTS
G
–
Y
POWER SUPPLY CORD
NEUTRAL
LIVE
EARTH
CN-B
2
1
RY2
NO
COM
RY3
CONTROL PANEL
CN-A
T1
CN-G
1
5
MG: MAGNETRON
H.V.WIRE B
T:
C:
H.V.
CAPACITOR
H.V.
RECTIFIER
ASYMMETRIC RECTIFIER
HIGH VOLTAGE
TRANSFORMER
WHT
WHT
BLK
BLK
YLW
RED
PICTORIAL DIAGRAM
R-734 - 34
Figure S-2. Control Panel Circuit
A 3
AC230V
50Hz
OVEN LAMP
FAN MOTOR
TURNTABLE
MOTOR
GRILL
HEATING
ELEMENT
HIGH
VOLTAGE
TRANSFORMER
NOTE :
STOP SWITCH
SWITCH UNIT
CN-A
CN-B
T1
4
6
3
1
RY1
RY2
RY3
: IF NOT SPECIFIED, 1/4W
±
5%
D23
D30
R22 91 1/2w
R31 4.7k
R51 4.7k
R50 4.7k
CR60
CN-G
R32 10k
R30 15k
R10 4.7k
A
B
C50
C51
C
SW50
D1-4
11ES1
D1
D3
WH-1
WH-2
R1 510 1w
R2 510 1w
LD1
LD2
LD3
LD4
D4
Q1
KRA101M
Q3
2SB1238
Q24
KRA101M
Q40
KRA101M
Q23
KRC243M
Q21
KRA223M
Q22
KRA223M
Q20
2SB1238
ZD20
HZ20-1
Q2
DTA123ES
D2
VRS1
10G471K
C3
0.1
µ
/50v
C21 0.1
µ
/50v
C6 10
µ
/50v
LIQUID CRYSTAL DISPLAY
C7 0.1
µ
/50v
IC-1
IXA089DR
D20
C30
R52
R61 4.7k
100k
100k
R53
R20 1k
D21
D22
C1 0.1
µ
/50v
C20
10
µ
/50v
C2 470
µ
/50v
SP1
C4
R3 4.7k
R40 3.3k
R21 4.7k
R5 240
R4 4.7k
C5
(J8)
(J6)
(J4)
(J2)
Constant
RY : Timing
Model
(J9)
(J7)
(J5)
(J3)
ZD1 HZ5C-2
ZD2 HZ4A2
CF1
CST4.00MGW
SEG20
R81
20
25
30
32
64
52
55
60
INT1
R83
R90
R91
R92
VDD
R40
R41
R42
R43
R50
R51
SEG19
SEG18
SEG17
SEG16
SEG15
VDD
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
C3
C2
C1
(J1)
b
c
d
a
A 1
A 5
NO
NO
COM
COM
B 1
B 2
G 1
G 2
G 3
G 4
G 5
G 6
+
–
R62 4.7k
+
–
+
–
SEG8
SEG21
1
5
10
15
35
40
45
19
51
33
SEG22
SEG23
COM1
COM2
COM3
COM4
VLC
VSS
XIN
XOUT
K00
K01
K02
K03
TEST
RESET
HOLD
INT2
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
R73
R72
R71
R70
R63
R62
R61
R60
R53
R52
: IF NOT SPECIFIED, 0.01
µ
F/16V
: IF NOT SPECIFIED, 1SS270A
CONTROL PANEL CIRCUIT
R-734 - 35
Figure S-3. Switch Unit Circuit
1
2
3
4
SW2
5
6
SW3
SW4
SW5
SW6
SW7
SW1
SWITCH UNIT CIRCUIT
R-734 - 36
Figure S-4. Printed Wiring Board
2
LD1
LD2
LD3
WH-2
R65
E
E
E
E
B
B
B
Q2
ZD2
Q24
R51
R2
R1
D2
D1
D3
D4
(J10)
R60
R21
R32
R52
R53
MICRO
RY3
RY2
OL/FM
/TTM
/TTM
B
C
A
AC
R31
R50
CF1
2
6
8
10
12
11
7
D30
D23
Q22
Q20
D22
5
1
D20
VRS1
CN - A
(J3)
(J5)
(J7)
(J5)
(J7)
(J8)
CN - B
1
2
R10
R61
R62
R63
R64
R66
R67
R68
C1
S1
WH-1
WH-1
64
52
51
33
32
20
11
2
19
1
IC1
3
(J6)
(J4)
(J2)
ZD1
1
5
9
4
(J9)
SW63
CR60
Q40
Q3
R30
R40
R20
R22
D21
RY1
GRILL
SW50
(J11)
(J1)
F
ZD20
R3
C30
C50
C51
C5
C6
C4
C1
C2
C21
C20
Q23
Q1
Q21
SP1
C7
R4
R5
B
B
E
E
E
E
E
B
C3
B
S
P
T1
B
SW62
CN - G
SW61
WH-2
DIP
LD4
SW60
QKITPA018URE0
PRINTED WIRING BOARD
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