Read Sharp R-771M Service Manual online
17
771M -
Figure S-2. Control Panel Circuit
WIRING DIAGRAM
+
–
+
–
+
–
+
–
A1
VRS1
a
4
8
R1 510 1w
R50 4.7k
R51 4.7k
IC1 IZA929DR
C50
C51
R52 100k
R53 100k
SW1
DOOR SWITCH
THERMISTOR
CONTROL UNIT
KEY UNIT
LIQUID CRYSTAL DISPLAY
C30
C80
R31 4.7k
R83 15k
R2 510 1w
R20 130 1w
R21 130 1w
Q1
2SA933S
2SA933S
Q4
2SB1238
2SB1238
Q2
KRA101M
KRA101M
Q20
KRA101M
KRA101M
Q22 KRC243M
Q21 KRA101M
Q23
KRA101M
KRA101M
Q40
KRA101M
KRA101M
Q3
2SB1238
2SB1238
Q24
KRA101M
KRA101M
AC230-240 V
50Hz
50Hz
LOWER
HEATER
HEATER
UPPER
HEATER
HEATER
HIGH
VOLTAGE
TRANSFORMER
VOLTAGE
TRANSFORMER
NOTE:
IF NOT SPECIFIED 1/4w
±
5%
IF NOT SPECIFIED 1SS270A
IF NOT SPECIFIED 0.01
µ
F/16v
TURNTABLE
MOTOR
OVEN LAMP
MOTOR
OVEN LAMP
FAN MOTOR
Q25
KRA101M
KRA101M
D1:S1NB10
RY5
RY1
RY4
RY3
RY2
6
1
c
d
b
(J1)
(J13)
(J2)
(J4)
(J6)
(J8)
(J3)
(J5)
(J7)
(J9)
T1
10G471K
D20
D21
D22
D23
D24
ZD2
HZ20-1
D25
D30
C1 0.1
µ
/50v
C2 470
µ
/50v
C20 0.1
µ
/50v
C21
10
µ
/35v
C6 10
µ
/35v
C7
0.1
µ
/50v
C3
C4
SP40
C5
0.1
µ
/50v
R3 1k
R4 4.7k
R40 3.3k
R30 15k
R9 1k
R81
R82
12 kF
R60 15k
R61 15k
R62 15k
R63 15k
CF1
4MHz
R64 100k
R65 100k
R66 100k
R67 100k
R68 15k
R69 15k
R70 15k
R10 16
WH-A
D2 D3
R71 15k
R72 15k
R11 3.3k
LD1 LD2
LD3 LD4 LD5
R5 4.7k
R6 15k
R8 15k
18
C2
VL2
VL3
COM0
COM1
COM2
COM3
AVSS
VREF
VCC
SEG2
SEG3
SEG4
P73
P72
P71
P70
RESET
XCIN
35
40
45
85
90
95
50
XCOUT
XIN
XOUT
VSS
P27
P26
P25
P24
P23
P22
P21
P20
P17
P16
SEG5
SEG6
SEG7
SEG8
SEG9
SEG1
SEG0
SEG11
SEG10
C1
VL1
AN7
AN6
AN5
AN6
AN5
5
10
15
20
25
55
60
65
70
75
80
30
AN4
AN3
AN2
AN1
AN0
AN3
AN2
AN1
AN0
P57
P56
P55
P56
P55
CNTRO
P53
P52
P51
P50
P47
P46
P45
P44
P52
P51
P50
P47
P46
P45
P44
P41
P40
P77
P76
P75
P74
P40
P77
P76
P75
P74
INT1
INT0
INT0
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38
SEG39
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38
SEG39
SEG24
19
20
21
17
16
15
14
13
12
22
23
11
24
25
26
27
28
29
30
31
32
33
34
10
9
8
7
6
5
4
3
2
1
R7 15k
ZD1
HZ4C3
A3
A7
A5
NO
NO
B1
A
G11
G 2
G 6
G 1
G 7
G10
G5.9
G3.8
G4.12
B
C
B2
B3
B4
NO
COM
COM
COM
( )
GRILL
OVEN
(C˚)
AUTO
COOK
DUAL
GRILL
AUTO
DEFROST
STOP/
CLEAR
AUTO
START/
CLOCK
START/
AUTO
MINUTE
BREAKFAST
MICROW.
POWER
LEVEL
Kg / Lb
TIMER
PIZZA
( )
( )
MICRO
AUTO
COOK
K
g
nfo
%
Oz
Lbs
( )
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