Service manual

27
R-3S68
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. Contrl Panel Circuit
+
–
+
–
+
–
+
–
+
–
+
–
A3 A5 A1
COM
NO
B1 B2
AC220V 50Hz
OVEN LAMP TURNTABLE MOTOR FAN MOTOR POWER TRANSFORMER
DOOR SWITCH
ab
c
d
(J1)
VRS1
10G471K
T1
RY1 RY2
D20
D21
D22
D30
D2
D3
C4 C5
D1 : S1NB10
C1 470µ/16v
C2 47µ/16v
1
23
C11
C10 0.01µ/50v
Q10 KRA101M
Q2 KRA101M
ZD1
HZ4A-2
R10 15k
R1 15k
C3
VC
C6 0.1µ/50v
(J3) (J2)
Q60~63 KRA222M
Q60 Q61 Q62 Q63
R69 3.3k
Q64 KRC101M
VC
C12 0.1µ/50v
CF1 4MHz
Q40 KRA101M
R40 3.3k
SP40
C20
0.1µ/50v
C21
10µ/35v
Q20 KRA101M
Q21 KRC243M
Q22 KRA223M
R20 15k
R31 4.7k
R30 15k
C30 0.1µ/50v
R60 150
R61 150
R62 150
R63 150
R64 150
R65 150
R66 150
R67 150
R68 120
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D58
D57
D56
SW1
10
MIN.
1
MIN.
10
SEC.
AUTO COOK
STOP
CLEAR
SERVE
POWER
LEVEL
AUTO DEFROST
SW2
SW3
SW4
SW5
SW6
SW7
SW8
R80 100k R81 100k R82 100k
R53
R60
R61
R62
R63
INT2
R81
R82
R83
R90
R91
R92
KE0
VDD
VSS
PULSE
R52
R51
R50
AIN3
R42
R41
R40
R72
R70
RESET
XIN
XOUT
1
5
10
1415
20
25
28
IC1 IZA677DR
LIGHT EMITTING DIODE
CONTROL UNIT
KEY SHEET
NOTE :
IF NOT SPECIFIED, 1/4w ± 5% IF NOT SPECIFIED, 1SS270A IF NOT SPECIFIED, 0.01µF/16v
Q1 LM7905CT
5
1
2
3
4
11ES1 x 2
C4~5 100µ/35v x 2 
COOK SERVE CHECK DEF
g
START
INSTANT
COOK