Sharp R-1874 Service Manual

8
R-1874
6
45
1
2
3
6
45
1
2
3
A
B
C D E F
G H
A
B
C D E F
G H
Figure S-2. Touch Control Panel Circuit
+
–
+
–
+
–
+
–
A5
A1
A3
B1
B3
B5
B7
C1
C3
C9
C5
C7
F3
G12
G11
G10
G 9
G 8
G 1 G 2 G 3 G 4 G 5 G 6 G 7
F2F1E6E5
Q20 K R A101M
Q90 K R A101M
VRS1
10G471K
C1 0.1µ/50v
D20D21D22D23D24D25D26D27D28
D32
D31
D65
D29
C2 1000µ/35v
C3 0.1µ/50v
C9
0.1µ/50v
C10 0.1µ/50v
C74 330pF
C73 330pF
C72 330pF
C71 330pF
C70 330pF
C50 C60
C30
D30
DOOR
SWITCH
DAMPE R
SWITCH
AC120V
60Hz
MOTOR RUN
CAPACITOR
TURNTABLE
MOT OR
DAMPE R
MOT OR
CONVECTION
MOT OR
HOOD LAMP
COM
LOW
HIGH
COM
HOOD THER MO
HOOD MOTOR
OVEN LAMP
MIC R O
CONVECTION
HER TE R
FAN MOTOR
OVEN
THERMISTOR
AH S E NS OR
(VP )
(VP )
F
MIX CONV
DE FR OS T
SENSOR
ON OFF COOK LB S OZ K G HELP
TURNTABLE
1, 2
31, 32
4
F
P1
IC2 IZA495DR
FLUORESCENT DISPLAY TUBE
KEY UNIT
CUSTOM
HELP
KITCHEN
TIMER
TURNTABLE
ON / OFF
CLOCK
SLOW
COOK
POWER
LEVE L
KEEP
WARM
STOP
CLEAR
START
TOUCH ON
1
100°F
2
150°F
3
275°F
4
300°F
5
325°F
6
350°F
7
375°F
8
400°F
9
425°F
0
450°F
BROIL
SENSOR
REHEAT
MINUTE
PLUS
CONVEC
SENSOR
COOK
COMPU
BROIL
COMPU
ROAST
FAN
HI/LO
LIGHT
COMPU
BAKE
POPCORN
PREHEAT
LOW MIX
BAKE
HIGH MIX
ROAST
COMPU
DE FR OS T
CONTROL UNIT
1
VRE F
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AN0
P55
P30
P31
P32
P33
P34
P35
P36
P37
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
P54
P53
P52
P51
P50
P47
P46
P45
P44
P43
P42
P40
P71
P70
XIN
XOUT
VSS
RST
INT1
VCC
VEE
AVS S
12
(A)
(A) (B) (C)
(B)(C)
C4 10µ/35v
+
–
C12
10µ/35v
+
–
C65
100µ/16v
C20 10µ/35v
R 30 15k
R 50 15k
R 63 220F
R 64 3.6 kF
R 31 4.7k R 62 36kF
R 51 4.7k
R 65 1k
C5
IC1 IZA719DR
C21 0.1µ/50v
ZD3 HZ5C2
R 1 4.3k
1/2w
R 2 1.5k
R 7 4.7k
R 40 3.3k
R 70 3.3k
R 91 100k
P2 5
6 7 8 9
10 11 12 13 15 16 17 18 19 20 23 22 24 25 26 27 28 29
P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 1G 2G 3G 4G 5G 6G 7G 8G
R 100 330 1w
R 92 100k R 93 100k
R 71 3.3k R 72 3.3k R 73 3.3k R 74 3.3k
R 78 3.3k R 82 3.3k
R79 R80 R81
3.3k 3.3k 3.3k
R 77 3.3k R 76 3.3k
D70 D71
D72
D73 D74 D75 D76
R 8 4.7k
R 75 100k
SP40
C7
C8
C11
R 3 680 1w
R 90 100k
NOTE
: IF NOT S PE CIFIE E D, 1/4w ± 5%
: IF NOT SPECIFIEED, 1SS270A
: IF NOT S PE CIFIE E D, 0.01µF/16v
R 4 510 1/2w
Q1 2S B1238
ZD1
HZ6A3
ZD2
HZ16-1
ZD4
HZ4A2
a
2
1
T1
5
6
3
D1
D2
D1-D4 : 11E S 1
D3
D4
4
C100
RY4
RY5
RY6
RY7
RY8
RY9
RY10
RY1
RY2
RY3
b
c
d
(J1)
(J2) (J4) (J6) (J3) (J5) (J7)
Q21 K R A101M
Q22 K R A101M
Q23 K R A101M
Q24 K R A101M
Q26 K R A101M
Q28 K R A101M
Q27
KRC243M
Q30
KRA101M
Q60
KRC102M
Q3
KRA101M
Q4
DTA123E S
Q40
KRA101M
CF1 4MHz
Q29 K R A101M
Q25 K R A101M
E4E3E2E1
NO
NO
NO
COM
COM
COM
(
H)
(N)

Sharp R-1874 Specifications

General

Brand	Sharp
Model	R-1874
Category	Microwave Oven
Language	English