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R-677W
Sharp R-677W User Manual
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R-677 - 35
Figure S-2. Control Panel Circuit
CIRCUIT DIAGRAMS
CONT
...
43
41
42
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
INT0
INT1
P4
4
P4
5
P4
1
P4
0
RESET
P7
1
P7
0
XI
N
XO
U
T
VS
S
P2
7
P2
6
P2
5
P2
4
P2
3
P2
2
P2
1
P2
0
38
40
39
37
36
35
34
33
32
31
30
29
28
27
26
25
22
23
24
21
VL3
COM0
COM1
COM2
COM3
AVS
S
VR
E
F
VC
C
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
63
62
61
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
VL2
VL1
AN
7
AN
6
AN
5
AN
4
AN
3
AN
2
P6
1
P6
0
P5
7
P5
6
P5
5
P5
4
P5
3
P5
2
P5
1
P5
0
P4
7
P4
6
18
20
19
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P3
4
P3
5
P3
6
P3
7
P0
0
P0
1
P0
2
P0
3
P0
4
P0
5
P0
6
P0
7
P1
0
P1
1
P1
2
P1
3
P1
4
P1
5
P1
6
P1
7
10G471K
T1
D1
D2
D3
D4
35V
/1000u
Q1
C1
50
V/0.1u
SP1
3.3
K
D3
0
D2
2
Q2
3
C2
1
35
V/10u
RY
3
JV
-24S-K
T
RY
2
RY
6
OJ-SH-124LM
C6
C4
4.7
K
ZD
2
HZ
4A
2
(J3
)
(J8
)
Q2
0
R8
CF
1
R31
4.7K
4.7
K
R5
R69
R30
DOOR
SW
10Kx3
FCR4.0MC5M3
6
8
4
R40
1N
4002L
I-1
VRS1
LD1
1
A5
A7
A3
N.O
.
COM
COM
N.O
.
N.O
.
COM
A1
15K
R12
R1
D2
0
D2
6
C2
CR60
START
+1
min
SW1
SW3
STO
P
SW2
A9
Q2
6
Q2
4
Q2
2
1
Q2
5
LD2
LD3
LD4
1W
360
R2
1W
360
R10
240
ZD
1
HZ5
C
-2
35
V/10u
R4
C7
(J2
)
(J5
)
(J
4
)
(J7
)
(J
6
)
R7
R6
C5
4.7
K
C3
0
(J1
)
D2
5
OJ-SH-124LM
D2
4
D2
1
RY
5
RY
4
RY
1
D2
3
DU18D1-1P(M)-R-S
Q3
KTA1274Y
R9
1K
ZD
3
HZ
20-1
Q2
1
C2
0
0.1u / 50
V
4.7
K
C3
50
V/0.1u
Q2
ENC
OD
ER
A
B
C
R50
R51
R52
R53
4.7K
100K
100K
LD5
VR
1
10K
5
3
4
1
2
6
11
10
9
7
8
11
10
9
7
8
5
3
4
1
2
6
R70
R68
15
K
15
K
15
K
Q4
0
C5
2
C5
3
CN-C
WH-B
SW
1
1
10
2
4
6
8
9
7
5
3
S1
S2
S3
S4
S5
S6
S7
S8
S9
S1
0
S1
2
S1
1
C3
C2
C1
AC2
30V
50HZ
MICRO
2
KRA117M
50
V/0.1u
1.5K
R80
11P HA
RN
ES
S
KRC
243M
SW9
AU
TO
CLOCK
SW4
SW5
SW6
AU
TO
DEF
SW8
WATT
SW7
KR
A222M
OMIF-S-124LM
DU18D1-1P(M)-R
POWER
C6
0
C6
3
C6
2
C6
1
R90
R91
R93
R92
R94
R95
R96
R97
1/
2W 130
R20
OL
TTM
:IF NOT SPECIFIED 1/4W
±
5%
NOTE
:IF NOT SPECIFIED 1SS270A
:IF NOT SPECIFIED 0.01uF/16V
:IF NOT SPECIFIED KRA101M
R94-R97 ; 1/16W 100Kx4
C60-C63 ; 50V / 470px4
R90-R93 ; 1/16W 15Kx4
Backlight unit
2P HARNESS
WH-A
1N4002Lx4
PA105DR
150mA
TOP
HEATING
ELEMENT
BOTTOM
HEATING
ELEMENT
FAN
MOTOR
CN-B
Q4
KTA1274Y
LIQUID CRYSTAL DISPLAY
IXA201DR
34
36
Table of Contents
Table of Contents
1
Caution Microwave Radiation
2
Warning
3
Servicing
4
Product Specifications
7
General Information
7
Appearance View
8
Operation Sequence
9
Function of Important Components
11
Troubleshooting Guide
13
Test Procedure
14
Control Panel Assembly
20
Component Replacement and Adjustment Procedure
24
Test Data at a Glance
29
Microwave Measurement
30
Wiring Diagram
31
Pictorial Diagram
34
Control Panel Circuit
35
Printed Wiring Board
36
Parts List
37
Cabinet and Unit Chassis Parts
40
Control Panel/Door Parts
41
Miscellaneous/Packing and Accessories
42
4
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Sharp R-677W Specifications
General
Brand
Sharp
Model
R-677W
Category
Microwave Oven
Language
English
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