Sharp R-2277 Service Manual ▷ View online
31
R-2277
R-2287
R-2287
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
Figure S-1. Pictorial Diagram
SW5 : STOP
SWITCH
1 BLK
3 BLK
2
CN-H
TAB2
TAB1
CN-A
4
1 ORG
5 WHT
3 BLK
2
6
7 PNK
BRN
TAB3
TAB4
NO
COM.
BLK
ORG
COM.
NO
SW3 :
3RD LATCH
SWITCH
WHT
GRN
RED
WHT
GRY
COM.
NO
SW1 : 1ST LATCH
SWITCH
(Cabinet side)
COM.
NO
COM.
NC
WHT
GRY
HIGH VOLTAGE COMPONENTS
MG1 :
MAGNETRON
(Upper)
MG2 :
MAGNETRON
(Lower)
T1 :
HIGH VOLTAGE
TRANSFORMER
H. V. RECTIFIER
ASYMMETRIC
RECTIFIER
C2 : HIGH VOLTAGE
CAPACITOR
B
L
U
EXHAUST THERMISTOR
YLW
WHT
OL :
OVEN LAMP
& SOCKET
BLK
O
R
G
WP1 :
WEAK
POINT
A018
(R-2287)
PNK
WP2 :
WEAK
POINT
A018
(R-2287)
TC4 :
OVEN
THERMAL
CUT- OUT
TC2 :
MAGNETRON
THERMAL CUT- OUT
(Lower)
F2 :
FUSE
F6.3A
G
/
Y
POWER
SUPPLY
CORD
WHT
F1: WEAK
POINT
A017
(R-2278)
ORG
TC3 :
BLOWER
MOTOR
TAERMAL
CUT- OUT
PNK
GRY
SW4 :
MONITOR
SWITCH
BM :BLOWER
MOTOR
ORG
ORG
BRN
1 GRN
3 GRY
2 RED
CN-B
1 BLK
3 BLK
2
CN-D
GRN
GRN
BLU
INTAKE THERMISTOR
WHT
SW2 : 2ND LATCH
SWITCH
(Oven side)
BLK
WHT
WHT
SM: STIRRER MOTOR
YLW
PNK
RED
BLK
GRY
PNK
ORG
PNK
T2 :
HIGH VOLTAGE
TRANSFORMER
C1 : HIGH VOLTAGE
CAPACITOR
H. V. RECTIFIER
ASYMMETRIC
RECTIFIER
ORG
TC1 : MAGNETRON
THERMAL
CUT- OUT
(Upper)
BRN
BRN
BLK
SM: STIRRER MOTOR
WHT
GRY
RED
ORG
BLK
G
R
Y
PNK
GRY
PNK
ORG
ORG
BLK
BLK
BLK
MAGNETRON
THERMISTOR
BRN
WHT
B
R
N
G
R
Y
G
R
Y
W
H
T
O
R
G
R1 :
MONITOR
RESISTOR
TOUCH CONTROL PANEL
CN-J
IC
CN-H
CN-B
CT-1
TAB2
RY-3
TAB1
RY-1
CN-A
T
CT-2
RY-4
TAB3
TAB4
CN-E
FUSE
13A
(R-2277)
FUSE
M6.3A
(R-2277)
FUSE
M6.3A
(R-2277)
BRN
NOISE FILTER
L
N
BLU
WHT
BLK
32
R-2277
R-2287
R-2287
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
POWER
%
ON
6G
5G
4G
3G
2G
1G
aa
aa
b
c
d
e
f
g
h
a
b
c
d
e
f
g
1
26
1
F
1
F
P
N
C
N
B
L
B
U
h
g
g
f
e
d
c
b
a
e
d
c
b
a
G
1
G
2
G
3
G
4
G
5
G
6
i
j
k
j
k
P
N
2
F
2
F
P30
P27
P26
P25
P24
P23
P22
P21
P20
P17
P16
P15
P14
P13
P12
P11
P10
PO7
PO6
PO5
PO4
PO3
PO2
PO1
PO0
P37
P36
P35
P34
P33
P32
P31
P26
P25
P24
P23
P22
P21
P20
P17
P16
P15
P14
P13
P12
P11
P10
PO7
PO6
PO5
PO4
PO3
PO2
PO1
PO0
P37
P36
P35
P34
P33
P32
P31
VCC
VSS
XOUT
XIN
P70
P71
XOUT
XIN
P70
P71
RESET
INT0
INT1
P42
P43
P44
P45
P46
P47
P50
P51
P52
P53
P54
P55
P60
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VREF
AVSS
VEE
INT1
P42
P43
P44
P45
P46
P47
P50
P51
P52
P53
P54
P55
P60
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VREF
AVSS
VEE
CF1
CST4.00MGW
2200p
C80
16V
2200p
C81
16V
33
35
40
45
50
55
60
64
32
30
25
20
15
10
5
1
IC1
IZA648DR
R80
R81
220K
220K
15K
R85
15K
R84
R82
4.7K
R83
4.7K
E5
F5
F4
E4
E3
F3
F2
E2
E1
F1
K3
K2
K1
J3
J2
J1
ENCODER
B
A
COM.
SW3
SW1
SW4
SW2
SW.UNIT
G2
G1
I1
I2
SW5
SW.UNIT
R63 47K
R37 47K
R36 47K
D32
D33
R51 5.1K
(J4)
(J3)
(J2)
(J1)
VA
C60
0.01µ 25V
MAGNETRON THERMISTOR
DOOR SW.
EXHAUST
THERMISTOR
H3
H1
B1
B2
B3
Q70
KRA101M
R70
3.3K
SP1
D50
R50
100
C50
D20
11ES1
R40
1.1K
R41
20K
R42
3.3K
: IF NOT SPECIFIED, 1SS270A
: IF NOT SPECIFIED, 1/4W 5%
: IF NOT SPECIFIED, 0.01µ 16V
TAB4
TAB3
TAB2
TAB1
A1
A3
A5
A7
OVEN LAMP
BLOWER
MOTOR
STIRRER
MOTOR
AC230V
50HZ
MICRO 1
MICRO 2
D31
R33
1K
D30
R32
1K
R31
2KF
R35
300K
C31
22µ25V
R30
2KF
R34
300K
C30
22µ25V
+
–
+
–
D23
CT2
CT1
RY3
VS-18MB-NR
RY2
VS-18MB-NR
RY1
OJ-SH-118LM
D22
D21
VRS1
10G471K
(J9)
Q21
DTD143ES
Q22
DTB143ES
Q23
DTB143ES
7
8
4
5
3
1
+
–
C21
4.7µ 35V
0.1µ
C10
50V
R20
470
Q20
DTA114YS
Q10
KRA101M
C20
0.1µ 50V
+–
C11
T1 PA080DR
D1–D4 : 11ES1
D1
D3
D2
D4
C1
0.1µ 50V
C2
1000µ 35V
+
–
VR
VA
ZD1
HZ12C1
R1 1.8K
Q1
2SB953
+
–
C3
3.3µ 50V
C4
0.01µ 25V
+
–
R2
560 1/2W
C5
47µ 16V
ZD2
HZ4C3
R3 1K
Q2
2SA1561
R10
15K
VC
C6
C7
R4
15K
+
–
+
–
D5
D6
D7
11ES1
11ES1
C8
100µ 16V
VP
C9
22µ 25V
R5 15 1/2W
C12
0.1µ
50V
CONTROL UNIT
a
b
cd
R65
1.5K
D3
C90
R90 4.7 K
R91 6.8 K
D1
INTAKE
THERMISTOR
Figure S-2. Control Panel Circuit (R-2277)
33
R-2277
R-2287
R-2287
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
Figure S-3. Control Panel Circuit (R-2287)
POWER
%
ON
6G
5G
4G
3G
2G
1G
aa
aa
b
c
d
e
f
g
h
a
b
c
d
e
f
g
1
26
1
F
1
F
P
N
C
N
B
L
B
U
h
g
g
f
e
d
c
b
a
e
d
c
b
a
G
1
G
2
G
3
G
4
G
5
G
6
i
j
k
j
k
P
N
2
F
2
F
P30
P27
P26
P25
P24
P23
P22
P21
P20
P17
P16
P15
P14
P13
P12
P11
P10
PO7
PO6
PO5
PO4
PO3
PO2
PO1
PO0
P37
P36
P35
P34
P33
P32
P31
P26
P25
P24
P23
P22
P21
P20
P17
P16
P15
P14
P13
P12
P11
P10
PO7
PO6
PO5
PO4
PO3
PO2
PO1
PO0
P37
P36
P35
P34
P33
P32
P31
VCC
VSS
XOUT
XIN
P70
P71
XOUT
XIN
P70
P71
RESET
INT0
INT1
P42
P43
P44
P45
P46
P47
P50
P51
P52
P53
P54
P55
P60
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VREF
AVSS
VEE
INT1
P42
P43
P44
P45
P46
P47
P50
P51
P52
P53
P54
P55
P60
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VREF
AVSS
VEE
CF1
CST4.00MGW
2200p
C80
16V
2200p
C81
16V
33
35
40
45
50
55
60
64
32
30
25
20
15
10
5
1
IC1
IZA648DR
R80
R81
220K
220K
15K
R85
15K
R84
R82
4.7K
R83
4.7K
E5
F5
F4
E4
E3
F3
F2
E2
E1
F1
K3
K2
K1
J3
J2
J1
ENCODER
B
A
COM.
SW3
SW1
SW4
SW2
SW.UNIT
G2
G1
I1
I2
SW5
SW.UNIT
R63 47K
R37 47K
R36 47K
D32
D33
R51 5.1K
(J4)
(J3)
(J2)
(J1)
VA
C60
0.01µ 25V
MAGNETRON THERMISTOR
DOOR SW.
EXHAUST
THERMISTOR
H3
H1
B1
B2
B3
Q70
KRA101M
R70
3.3K
SP1
D50
R50
100
C50
D20
11ES1
R40
1.1K
R41
20K
R42
3.3K
: IF NOT SPECIFIED, 1SS270A
: IF NOT SPECIFIED, 1/4W 5%
: IF NOT SPECIFIED, 0.01µ 16V
TAB4
TAB3
TAB2
TAB1
A1
A3
A5
A7
OVEN LAMP
BLOWER
MOTOR
STIRRER
MOTOR
AC230V
50HZ
MICRO 1
MICRO 2
D31
R33
1K
D30
R32
1K
R31
1.5KF
R35
300K
C31
22µ25V
R30
1.5KF
R34
300K
C30
22µ25V
+
–
+
–
D23
CT2
CT1
RY3
VS-18MB-NR
RY2
VS-18MB-NR
RY1
OJ-SH-118LM
D21
VRS1
10G471K
(J9)
Q21
DTD143ES
Q22
DTB143ES
Q23
DTB143ES
7
8
4
5
3
1
+
–
C21
4.7µ 35V
0.1µ
C10
50V
R20
470
Q20
DTA114YS
Q10
KRA101M
C20
0.1µ 50V
+–
C11
T1 PA080DR
D1–D4 : 11ES1
D1
D3
D2
D4
C1
0.1µ 50V
C2
1000µ 35V
+
–
VR
VA
ZD1
HZ12C1
R1 1.8K
Q1
2SB953
+
–
C3
3.3µ 50V
C4
0.01µ 25V
+
–
R2
560 1/2W
C5
47µ 16V
ZD2
HZ4C3
R3 1K
Q2
2SA1561
R10
15K
VC
C6
C7
R4
15K
+
–
+
–
D5
D6
D7
11ES1
11ES1
C8
100µ 16V
VP
C9
22µ 25V
R5 15 1/2W
C12
0.1µ
50V
CONTROL UNIT
a
b
cd
R65
1.5K
D3
C90
R90 4.7 K
R91 6.8 K
D1
INTAKE
THERMISTOR
D22
34
R-2277
R-2287
R-2287
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
Figure S-3. Printed Wiring Board
(4)
(5)
1
2
3
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