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R - 4 2 0 D K
R-420DW
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. CLOCK APPEARS ON DISPLAY
MAGNETRON
TEMP.
FUSE
GRN
120V AC
60 Hz
CAVITY
TEMP.
FUSE
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. VARIABLE COOKING CONTROL "HIGH"
4. "START" PAD TOUCHED
MAGNETRON
TEMP.
FUSE
GRN
120V AC
60 Hz
CAVITY
TEMP.
FUSE
Note:* Indicates component
MONITOR
FUSE 20A
COM.
A2
(RY-1)
A1
CONTROL UNIT
N.O.
TTM
OL
FM
TURN-
OVEN
FAN
TABLE
LAMP
MOTOR
MOTOR
SECONDARY
INTERLOCK
SWITCH
Figure O-1 Oven Schematic - Off Condition
2. CLOCK APPEARS ON DISPLAY
MONITOR
FUSE 20A
COM.
A2
(RY-1)
A1
CONTROL UNIT
N.O.
TTM
OL
FM
TURN-
OVEN
FAN
TABLE
LAMP
MOTOR
MOTOR
SECONDARY
INTERLOCK
SWITCH
Figure O-2 Oven Schematic - Cooking Condition
N.O.
AH SENSOR
(RY-2)
PRIMARY
INTERLOCK
RELAY
COM.
B1
B2
N.C.
DOOR
SENSING
MONITOR
SWITCH
SWITCH
COM.
N.O.
AH SENSOR
(RY-2)
PRIMARY
INTERLOCK
RELAY
COM.
B1
B2
N.C.
DOOR
SENSING
MONITOR
SWITCH
SWITCH
COM.
8
CAPACITOR 1.0µF
AC 2300V
POWER
TRANSFORMER
H.V. RECTIFIER
MAGNETRON
CAPACITOR 1.0µF
AC 2300V
POWER
TRANSFORMER
H.V. RECTIFIER
MAGNETRON
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