Power Unit Circuit - Sharp R-880B Service Manual

1
A
B
AC230-240V
A 1
50Hz
a
C
A 3
FAN MOTOR
D
CONVECTION
A 5
MOTOR
N.O.
OVEN LAMP
TURNTABLE
MOTOR
COM
E
N.O.
BOTTOM
HEATER
COM
N.O.
TOP
HEATER
COM
F
N.O.
MICRO
COM
G
NOTE
H
1
2
3
D1-4
T1
11ES1
8
4
D1
D3
6
1 D2
D4
d
b
c
RY5
RY1
RY6
RY4
RY3
RY2
D 3
OVEN THERMISTOR
: IF NOT SPECIFIED, 1/4w
: IF NOT SPECIFIED, 1SS270A
Figure S-2. Power Unit Circuit
2
3
4
Q2 2SB1238
R4 27
D5 D6
R5 4.7k
Q1
2SB1238
R2 680 1/2w
SP1
R6 3.3k
Q3
DTD143ES
C5
10 /35v
D 1 B 2 B 1
DOOR SWITCH
5%
4
39
6
5
C10 LED
GND
C 2
VC
C 3
R3 510 1/2w
VA
C 1
VR
C 9
INT
C 4
C 5 BUZZER
FAN MOTOR
C15
CONVECTION
C16
MOTOR
OVEN LAMP
C 6 TURNTABLE
MOTOR
BOTTOM
C14
HEATER
TOP
C 8
HEATER
C11 N.C.
C 7
MICRO
OVEN
C17
THERMISTOR
N.C.
C13
DOOR
C12
SWITCH
5 6
R-880B
A
B
C
D
E
F
G
H