Sharp R-820BK, Service Manual

Page: 13 / 48

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
BRN
BLU
G-Y
EARTH
LIVE
NEUTRAL
RY4 RY3
RY2:
RY6 RY5
CM
CONVECTION MOTOR
THERMISTOR
RY1
CAPACITOR 0.94
µ
F
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
BRN
BLU
G-Y
EARTH
LIVE
NEUTRAL
RY4 RY3
RY2:
RY6 RY5
CM
CONVECTION MOTOR
THERMISTOR
RY1
CAPACITOR 0.94
µ
F
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.