Sharp R-7H55 - Circuit Schematics; Off and Microwave Cooking Schematics

33
R-7H55
SCHEMATIC
NOTE: CONDITION OF OVEN
1.DOOR CLOSED
2.CLOCK OR : APPEARS ON DISPLAY
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. VARIABLE COOKING CONTROL HIGH
4. START PAD TOUCHED
Figure O-1. Oven Schematic - Off Condition
Figure O-2. Oven Schematic - Microwave Cooking Condition
THERMAL 
CUT-OUT
145˚C(MG)
220 V
~50Hz
BRNBLU
G-Y
NEUTRAL LIVE
EARTH
FUSE  M8A
LN
RESISTOR 680K
LINE CROSS CAPACITOR 0.22µ /AC 250V
noise suppression coil
RESISTOR 10M
LINE BYPASS CAPACITOR  0.0033µ /AC 250V
LINE BYPASS CAPACITOR  0.0033µ /AC 250V
NOISE FILTER
POWER 
TRANSFORMER
MAGNETRON
FM CM DM OL TTM
CAPACITOR
1.07µF
THERMAL 
CUT-OUT
150˚C(CONV.)
CONTROL UNIT
A3
A1
B1 B2 B3 B4 B5 B6
1ST LATCH
SWITCH
THERMISTORDAMPER
SWITCH
DOOR
SENSING
SWITCH
FAN MOTOR CONVECTION MOTOR DAMPER MOTOR OVEN LAMP
RED
A5 A7 A9 COM.
COM.
COM.
RY3
RY2
PRIMARY INTERLOCK RELAY
RY1RY6RY5RY4
N.O. N.O.
TURNTABLE MOTOR CONVECTION HEATING ELEMENT
2ND LATCH 
SWITCH
MONITOR SWITCH
MONITOR RESISTOR 0.8 / 20W
H.V. RECTIFIER
THERMAL CUT-OUT
95˚C(FAN)
N.O.
AH. SENSOR
F3 F2 F1
GRN
ASYMMETRIC
RECTIFIER
THERMAL 
CUT-OUT
145˚C(MG)
BRNBLU
G-Y
NEUTRAL LIVE
EARTH
FUSE  M8A
LN
RESISTOR 680K
LINE CROSS CAPACITOR 0.22µ /AC 250V
noise suppression coil
RESISTOR 10M
LINE BYPASS CAPACITOR  0.0033µ /AC 250V
LINE BYPASS CAPACITOR  0.0033µ /AC 250V
NOISE FILTER
POWER 
TRANSFORMER
MAGNETRON
FM CM DM OL TTM
CAPACITOR
1.07µF
THERMAL 
CUT-OUT
150˚C(CONV.)
CONTROL UNIT
A3
A1
B1 B2 B3 B4 B5 B6
1ST LATCH
SWITCH
THERMISTORDAMPER
SWITCH
DOOR
SENSING
SWITCH
FAN MOTOR CONVECTION MOTOR DAMPER MOTOR OVEN LAMP
RED
A5 A7 A9 COM.
COM.
COM.
RY3
RY2
PRIMARY INTERLOCK RELAY
RY1RY6RY5RY4
N.O. N.O.
TURNTABLE MOTOR CONVECTION HEATING ELEMENT
2ND LATCH 
SWITCH
MONITOR SWITCH
MONITOR RESISTOR 0.8 / 20W
H.V. RECTIFIER
THERMAL CUT-OUT
95˚C(FAN)
220 V
~50Hz
N.O.
AH. SENSOR
F3 F2 F1
GRN
ASYMMETRIC
RECTIFIER