Sharp R-820BW Microwave Oven User Manual


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11
R-820BK
R-820BW
Figure O-5 Oven Schematic-Roast cooking Condition
Figure O-4 Oven Schematic-Convection cooking Condition (Convection with preheat mode)
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. CONVECTION PAD TOUCHED.
3. NUMBER "1" PAD TOUCHED.
4. TEMPERATURE PAD TOUCHED.
5. COOKING TIME PROGRAMMED.
6. START PAD TOUCHED.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. ROAST PAD TOUCHED.
3. COOKING TIME PROGRAMMED.
4. START PAD TOUCHED.
FM
TTM
OVEN LAMP
FAN MOTOR
TURNTABLE 
MOTOR
H.V. RECTIFIER
CONTROL UNIT
RPIMARY
INTERLOCK RELAY
COM.
COM.
COM.
N.O.
COM.
N.O. N.O.
N.O.
A1
DOOR
SENSING
SWITCH
BRNBLU
G-Y
EARTH
LIVENEUTRAL
RY4
RY3
RY2:
RY6
RY5
CM
CONVECTION
MOTOR
THERMISTOR
RY1
CAPACITOR
0.94µF
AC2200V
GRILL HEATER (TOP)
BOTTOM HEATER
MAGNETRON
POWER 
TRANSFORMER
B2
B1
A3
A5
D1
D3
SECONDARY
INTERLOCK SWITCH
THERMAL CUT-OUT
(OVEN)
THERMAL
CUT-OUT
(MAG.)
MONITOR SWITCH
FUSE 20A
120V
~ 60Hz
OL
FM
TTM
OVEN LAMP
FAN MOTOR
TURNTABLE 
MOTOR
H.V. RECTIFIER
CONTROL UNIT
RPIMARY
INTERLOCK RELAY
COM.
COM.
COM.
N.O.
COM.
N.O. N.O.
N.O.
A1
DOOR
SENSING
SWITCH
BRNBLU
G-Y
EARTH
LIVENEUTRAL
RY4
RY3
RY2:
RY6
RY5
CM
CONVECTION
MOTOR
THERMISTOR
RY1
CAPACITOR
0.94µF
AC2200V
GRILL HEATER (TOP)
BOTTOM HEATER
MAGNETRON
POWER 
TRANSFORMER
B2
B1
A3
A5
D1
D3
SECONDARY
INTERLOCK SWITCH
THERMAL CUT-OUT
(OVEN)
THERMAL
CUT-OUT
(MAG.)
MONITOR SWITCH
FUSE 20A
120V
~ 60Hz
OL
NOTE: The microwave relay (RY2) and the heater relay (RY3 or RY4) are not energized
simultaneously.
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