DOWNLOAD Sharp R-891M Service Manual ↓ Size: 604 KB | Pages: 27 in PDF or view online for FREE

Model
R-891M
Pages
27
Size
604 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven
File
r-891m.pdf
Date
PREV: Sharp R-890SLM (serv.man13) Service Manual / Technical Bulletin

Sharp R-891M Service Manual ▷ View online

18
891M -
G 8
G 9
G 7
G 6
G 5
G 4
G 3
G 2
G 1
SW16
SW12
SW8
7
8
9
START
AUTO MINUTE
DUAL
BOOK MARK
BREAKFAST
CONVECTION
MICROWAVE
GRILL
PIZZA
INDEX
2
3
4
SW15
SW19
0
5
SW20
SW11
SW7
1
SW3
SW2
SW1
6
SW4
SW14
SW18
SW10
SW6
SW13
SW17
SW9
SW5
STOP
CLEAR
Figure S-3. Switch Unit Circuit
WIRING DIA
GRAM
19
891M -
WIRING DIAGRAM
Figure S-4. Display Unit Circuit
+
–
+
–
F11
GND
VA
INT
BACK
LIGHT
OVEN
THERMISTOR
CONVECTION
MOTOR
FAN
MOTOR
BOTTOM
HEATER
OVEN LAMP
TURNTABLE
MOTOR
HIGH
VOLTAGE
TRANSFORMER
DOOR
N.C
UPPER
HEATER
BUZZER
(EN.)
BUZZER
F10
F 9
F12
F13
F 8
F 7
F 6
F 2
F 1
F 3
F 5
F15
F 4
F14
Q12
KRA101S
Q26
KRA101S
Q25
KRA101S
Q24
DTA123JKA
Q42
KRA101S
D20
1SS181
Q20
KRA101S
Q22
DTA123JKA
Q23
DTA123JKA
Q160
KRA101S
CHECKER
Q40
KRA101S
Q41
KRC101S
Q1
2SB1238
Q140
KRA101S
Q141
2SA1036K
IC4
NJM062M
IC5
M51953A
IC3
CAT24C01J
CF1
CSTCS12.00MT
C14 0.1
µ
/50v
C17 0.1
µ
/50v
C10 0.01
µ
/50v
C11 47
µ
/16v
VCC
V 0
C D
N C
1
4
8
5
N C
N C
VSS
N C
C18 0.1
µ
/25v
C16 0.1
µ
/25v
C12 0.01
µ
/50v
C135
0.1
µ
/25v
C130
0.1
µ
/25v
C30
0.01
µ
/50v
C60
0.01
µ
/50v
C100 0.01
µ
/50v
SDA
5
8
4
1
SCL
TEST
OE1
1
16
17
32
A16
A15
A12
AN1
A11
A10
A 9
A 8
VSS
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
VCC
D15
D14
D13
D12
D11
D10
AN0
PA6
A20
VCC
TIOCA3
TIOCO3
TIOCA4
PB3
PB4
PB5
PB6
PB7
RES0
VSS
P90
P91
P92
P93
P94
P95
P40
P41
P42
P43
VSS
P44
D 5
G 9
G 8
G 7
G 6
G 5
G 4
G 3
G 2
G 1
D 6
D 7
D 8
D 9
VREF
AVCC
MD2
MD1
MD0
P66
HWR
R D
P63
VCC
XTAL
EXTAL
VSS
NM1
RES
STBY
Ø
P62
P61
WAIT
VSS
A19
A18
A17
A16
A15
A14
A13
A12
81
80
1
30
51
100
50
31
AN2
AN3
AN4
AN5
AN6
DA1
AVSS
IRQ0
IRQ1
PB2
CS1
CS0
VSS
PA0
PA1
PA2
PA3
PA4
PA5
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
D 0
D 1
D 2
GND
VCC
VEF2
V6R
VMIL3
VMIL2
VMH2
VMH3
V1R
VCC4
VCC3
D80
D81
D82
D83
D84
D85
D86
D87
R D
W R
R S
C S
M
FLM
CL1
C 0
M7S
RESET
TEST2
TEST1
GND3
GND2
GND1
OSC2
OSC1
VCC2
VCC1
V10
VMH1
V 3
V 4
VML1
V6L
VEE1
1
43
A18
A17
A14
A13
A 8
A 9
A11
O E
A10
C E
D 7
D 6
D 5
D 4
D 3
VCC
VSS
A 2
A 1
A 0
C123 0.1
µ
/25v
C120
0.1
µ
/25v
C101 10
µ
/35v
C20
0.1
µ
/25v
C22 0.01
µ
/50v
C23 0.01
µ
/50v
C15
0.1
µ
/25v
(J19)
(J18)
4.7k
C50
0.01
µ
/50v
C131
0.1
µ
/25v
C132
0.1
µ
/25v
C133
0.1
µ
/25v
C134
0.1
µ
/25v
R12 4.7k
R30 4.7k
R50 300kF
R60 1.5kF
HD66108
LCD (100 x 65 DOT)
(A057DR)
R137 18kF
IC2 IZA   DR
LH5347
IC1 IZA   DR
HD6433040A00FP
R136 3.6kF
R130
2k
R131
2k
R132
2k
R133
6.2k
R134
2k
R135
2k
R142 4.7k
R141
2.2k
LD1
LD2
LD3
LD4
LD5
LD6 
R140
750
1/4w
(J11) 4.7k
(J10)
(J12)
(J14)
(J16)
(J13) 4.7k
(J15) 4.7k
(J17) 4.7k
TH1
5G39B332J 
LD1-LD6
PG1101-350TR 
LMP2
LMP1
R10 4.7k
ZD10
HZM5.6NB2
R11 470 1/2w
R31 15k
R80 100k
R100 4.7k
R120 4.7k
R103 150 1/2w
NOTE
: IF NOT SPECIFIED,  1/16w 
±
 5%
R101 4.7k
R81 100k
R82 100k
R83 100k
R84 15k
R85 15k
SELECT2
SELECT3
SELECT1
(TOP)
SELECT4
(BOTTOM)
BOOKMARK
(FORWARD)
BOOKMARK
(BACK)
R71 15k
SW21
SW19
SW18
SW17
SW16
SW20
R102 47k
R160 4.7k
C110
0.01
µ
/50v
C122
0.1
µ
/25v
C121 0.1
µ
/25v
R110
4.7k
R72 15k
R73 15k
R74 15k
R75 15k
R76 15k
R77 15k
R78 15k
R79 15k
R51 360F
R61 15k
R53 15k
R52 12kF
C13 0.01
µ
/50v
20
891M -
Figure S-5. Printed Wiring Board of Power Unit and Switch Unit
WIRING DIAGRAM
C N   -   G
3
4
7
C 4
S P 1
B
Q 3
E
R 6
R Y 1
8
R 7
R 5
D 7
1 2
R 9
( J 4 )
( J 1 )
( J 3 )
R 8
( J 2 )
Z D 3
V R S 1
D 5
D 6
R Y 6
R Y 5
Z D 2  
9
1 1
5
6 
QKITPA021URE0
S W 1 7
S W 1 3
S W 6
S W 5
S W 1
S W 3
S W 4
S W 8
S W 1 2
S W 1 6
S W 2 0
S W 7
S W 1 1
S W 1 5
S W 1 9
S W 1 4  
S W 9
S W 1 0
S W 1 8
S W 2
2
C6
C5
10
C3
C2
E
E
E
D4
B
B
B
(J5)
Q4
Q2
C1
D1
Q1
ZD1
R2
D3
D2
R10
R4
R1
RY2
RY4
RY3
1
D I P
9
1
C N   -   F
CN - C
CN - B
C N   -   A
CN - E
OVEN TH.
DOOR SW.
T1
SECONDARY
T1
A C
F A N C O N V E C T I O N
PRIMARY
1
31
7
7
1
1
12
1 5
21
891M -
WIRING DIAGRAM
CN - G
CN - H
CN - C
C17
ZD10
K
A
R11
R140
SW16
SW17
SW20
SW21
SW19 
A
K
A
K
A
K
LD1
LD2
C123
LD3
LD5
R142
R141
LD4
LD6
LMP1
LMP2
TH1
Q141  
A
K
A
K
A
K
C18
SW18
R10
9
1 
1 
1 
1 
3 
1 
1 
1 
3 
4 
5 
2 
3 
1 
3 
3 
2 
5 
4 
2 
5 
4 
2 
5 
4 
2 
5 
4 
2 
5 
4 
3
15 1 
3 
LCD
J12
J14
J15
J17
J16
R60 C60
J13
J11
J10
C120
C121
R120
R137
R110
C110
R134
R135
R133
R132
R131
R130
R136
R170
R171
R53
R52
R51
R50
R100
TP10
TP13
TP18
TP12
TP17
TP33
TP32
TP25
TP20
TP22
C10
R12
C13
TP21
TP23
TP7
TP6
C11
TP28
TP8
TP30
CN - G
CN - H
CN - C
TP19
TP5
R101
C101
Q22
HCMK-P3X
K
K
A
Q23
D20
TP26
Q41
Q12
Q42
C14
TP24
TP31
Q140
C122
C134
C133
C132
C131
C130
17
16
32
CF1
31
1
4
5
9
1
1
E
C B
1
15
Q1
3
8
50
51
80
81
100
1
1
1
8
5
4
4
IC2
IC5
IC4
IC1
IC3
Q27
R103
R102
R79
R71
C100
C22
C23
C12
J18
J19
Q28
Q26
Q25
Q24
R30 
R160 
R75 
R74 
TP16 
R85 
R72 
R84 
R73 
C15
C170
R61
C16
C135
C50
C30
C20
T1
Q20
TP14
TP36
TP11
TP1
TP35
R83
R82
R78
R77
R81
R80
R76
1
R31
Q40
Q160
5
8
TP9
TP34
Back side
Front side
Figure S-6. Printed Wiring Board of Display Unit
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