Page 1
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. CLOCK APPEARS ON DISPLAY.
NOISE FILTER
L
FUSE
T6.3A
BRN
50Hz
˜
LIVENEUTRAL
220V
EARTH
G-Y
LINE CROSS CAPACITOR
NOISE SUPPRESSION COIL
BLU
N
NOTE: " " indicates components with potential above 250V.
COM.
A1
RY-1
CONTROL
UNIT
B1
OL
FM
TTM
B2A3
OVEN LAMP
FAN MOTOR
MONITOR SWITCH
TURNTABLE MOTOR
0.068µ/AC250V
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
N.O.
RY-2
2ND.
INTERLOCK
RELAY
120˚C (OVEN)
TEMPERATURE
FUSE
2ND. INTERLOCK
RELAY CONTROL
SWITCH
1ST. LATCH
SWITCH
POWER TRANSFORMER
H.V. FUSE
0.6A
CAPACITOR
0.94µF
AC2000V
R-297F
MAGNETRON
H.V. RECTIFIER
Figure O-1 Oven Schematic-OFF Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. START KEY TOUCHED.
NOISE FILTER
L
FUSE
T6.3A
BRN
50Hz
˜
LIVENEUTRAL
220V
EARTH
G-Y
BLU
N
0.068µ/AC250V
LINE CROSS CAPACITOR
NOISE SUPPRESSION COIL
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
N.O.
RY-2
2ND.
INTERLOCK
RELAY
120˚C (OVEN)
TEMPERATURE
FUSE
B1
2ND. INTERLOCK
RELAY CONTROL
SWITCH
1ST. LATCH
SWITCH
COM.
RY-1
CONTROL
UNIT
A1
POWER TRANSFORMER
OL
FM
TTM
H.V. FUSE
0.6A
B2A3
OVEN LAMP
FAN MOTOR
MONITOR SWITCH
TURNTABLE MOTOR
CAPACITOR
0.94µF
AC2000V
MAGNETRON
H.V. RECTIFIER
Figure O-2 Oven Schematic-ON Condition
25
Page 2
R-297F
A
B
C
1
OVEN CAVITY
BACK PLATE
23456
POWER SUPPLY CORD
LIVE
B
R
N
L
B
U
NEUTRAL
G/Y
EARTH
L
N
NOISE
FILTER
RED
RED
WHT
WHT
HIGH
VOLTAGE
CAPACITOR
H.V.
RECTIFIER
HIGH VOLTAGE
FUSE
MAGNETRON
POWER
HIGH VOLTAGE COMPONENTS
GRY
ORG
A
B
TRANSFORMER
C
(Cabinet side)
WHT
WHT
RED
D
OVEN LAMP
GRY
E
TEMPERATURE
FUSE (OVEN)
WHT
WHT
(Front side)
GRN
GRY
N.O.
F
GRN
GRN
COM.
2ND. INTERLOCK
RELAY CONTROL
SWITCH
GRN
CN-B
2
GRY
1
G
GRY
RED
ORG
D
FM:
FAN MOTOR
GRY
GRY
ORG
ORG
E
TTM:
TURNTABLE
MOTOR
GRY
GRY
WHT
GRY
GRY
N.C.
COM.
MONITOR
SWITCH
N.O.
COM.
1ST. LATCH
SWITCH
RED
GRY
ORG
CN-A
3
1
2
T1
Figure S-1. Pictorial Diagram
F
G
INTERLOCK
RELAY
N.O.
COM.
RED
ORG
RED
RY1
CN-A
3
1
H
1
2
CONTROL UNIT
CN-B
2ND.
RY2
H
123456
26
Page 3
R-297F
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
COM3
COM2
IC-1
VC3
VC2
VC1
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
RESET
TEST
VSS
OSC3
OSC4
VD1
VDD
AVDD
AVREF
AVSS
P40
P41
P42
P43
1
54
14
15
29
30
45
44
B2
A3
NO
COM
A1
RY1
RY2
D20
D21
Q21
DTD143ES
C21
10uF/35V
+
-
D22
D40
Q22
SP1
0.1uF/25V
(J11) (J10)
(J13) (J12)
(J15)
(J14)
+
-
C8
220uF/10V
ZD1
HZ4B3
R5
Q1
R6
15K
C4
0.01uF/25V
C11
0.01uF/25V
1K
C3
0.01uF/25V
C1
Q20
DTA143EAK
C20
0.1uF
25V
Q30
DTA143EAK
R41
15K
R40
4.7K
OVEN LAMP
TURNTABLE
MOOR
FAN MOTOR
POWER
TRANSFORMER
2ND.
INTERLOCK
RELAY CONTROL
SWITCH
CN-A
VRS1
10G471K
T1
D1
D2
D3
D4
[NOTE]
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
COM3
COM2
COM1
LIQUID CRYSTAL DISPLAY
B1
DOOR
RST
-5V
INT
P42
P41
P40
BZ
COM
M
C40
GND
CN-B
AC(H)
AC(N)
AC220V
50HZ
G3
G4
G5
G6
(J1)
DTA123JS
G8
G9
G10
G1
G2
G7
R50 20KF
C7
0.1uF
25V
VR
R30
3.3K
R20
15K
C5
C6
0.1uF/25V
0.1uF/25V
0.01uF/25V
R78
R76
R75
R77
220K
220K
220K
220K
9 8 7
0 1
45
6
3
2
COOK DEF KG QTY CHECK
TIMERTIMER
CLOCKCLOCK
STOPSTOP
CLEAR
C2
+
-
1000uF/25V
R4
910 1/2W
12
345
678
16
15
14
13
12
11
10
9
IC-2
TC74HC4060AF
C91
C92
22pF/50V
18pF/50V
R91
10MF
R90
470KF
CF1
25.6kHz
0.1uF/50V
C90
C1
C2
C3
Q10
(Base)
(Collector)
< CPU UNIT >
< KEY UNIT >
:IF NOT SPECIFIED 1/10W
±5%
:IF NOT SPECIFIED 1SS
270A
EASY
DEFROST
RICE PASTARICE PASTA
FROZEN
VEGETABLES
JACKET
POTATO
BEVERAGE
DINNER
PLATE
POWERPOWER
LEVEL
EXPRESS
DEFROST
FRESH
VEGETABLES
INSTANT
COOK
START
BZ
R00
R01
R02
R03
P20
P21
P22
P23
K00
K01
K02
K03
COM0
COM1
D1 - D4 1N4002
X
4
d
ab
c
2SA1037AK
A
B
C
D
E
F
G
1
23456
A
B
C
D
E
Figure S-2. Control Panel Circuit
F
G
H
123456
27
H
Page 4
R-297F
1
A
B
23456
A
B
DIP
C8
CHIP
SIDE
(J13)
(J12)
(J14)
(J15)
Q22
E
B
C
5
C21
Q21
C
CN-B
21
UNIT
CODE
D40
D22
R4
ZD1
4
D
D21
D20
SP1
3
(J10)
(J11)
1
E
C2
D
2
VRS1
RY1
RY2
E
1
CN-A
3
F
(J1)
S
D2
D1
P
T1
D4
D3
E
F
G
G
Figure S-3. Printed Wiring Board
H
123456
H
28
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