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Service manual

ManualsBrandsSharp ManualsDomestic AppliancesR-880B
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R-880B
37
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. MIX PAD TOUCHED THREE TIMES/FOUR TIMES.
3. COOKING TIME PROGRAMMED.
4. STRAT PAD TOUCHED.
Figure O-5(b) Oven Schematic-Mix cooking Condition (High Mix Bottom Grill mode / Low Mix Bottom Grill mode)
Figure O-5(a) Oven Schematic-Mix cooking Condition
(High Mix Top Grill mode / Low Mix Top Grill mode)
NOTE: The microwave relay RY2 and heater relay RY3 could not turn on simultaneously.
NOTE: Indicates components with potential above 250 V.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. MIX PAD TOUCHED ONCE/TWICE.
3. COOKING TIME PROGRAMMED.
4. STRAT PAD TOUCHED.
NOTE: The microwave relay RY2 and heater relay RY4 could not turn on simultaneously.
FM
TTM
OVEN LAMP
FAN MOTOR
CONVECTION
MOTOR
TURNTABLE 
MOTOR
ASYMMETRIC
RECTIFIER
H.V. RECTIFIER
CONTROUNIT
T1
T2
COM.
COM.
COM.
N.O.
COM.
N.O. N.O.
N.O.
A1
LINE BYPASS CAPACITOR
0.0033µF/ 250V
LINE BYPASS CAPACITOR
0.0033µF/ 250V
RESISTOR 10M/ 0.5W
NOISE SUPPRESSION COIL
RESISTOR 680 k/ 0.5W
LINE CROSS CAPACITOR
0.22µ/250V
NOISE FILTER UNIT
THERMISTOR
BRNBLU
G-Y
EARTH
LIVENEUTRAL
RY4
RY3
RY2
RY6
RY5
CM
RY1
CAPACITOR
1.07µF
AC2200V
GRILL HEATER (TOP)
BOTTOM HEATER
MAGNETRON
HIGH VOLTAGE 
TRANSFORMER
B2
D1
D3
B1
F1
F3
F2
A3
A5
1ST.
LATCH SWITCH
THERMAL CUT-OUT
(MG.)
THERMAL
CUT-OUT(OVEN)
MONITOR SWITCH
FUSE 15A
FUSE 
M10A
220 V
~
50Hz
MONITOR RESISTOR
0.8/ 20W
LN
OL
AH SENSOR
RY2:
2ND. 
INTERLOCK 
RELAY
2ND. INTERLOCK 
RELAY CONTROL 
SWITCH
FM
TTM
OVEN LAMP
FAN MOTOR
CONVECTION
MOTOR
TURNTABLE 
MOTOR
ASYMMETRIC
RECTIFIER
H.V. RECTIFIER
CONTROUNIT
T1
T2
COM.
COM.
COM.
N.O.
COM.
N.O. N.O.
N.O.
A1
LINE BYPASS CAPACITOR
0.0033µF/ 250V
LINE BYPASS CAPACITOR
0.0033µF/ 250V
RESISTOR 10M/ 0.5W
NOISE SUPPRESSION COIL
RESISTOR 680 k/ 0.5W
LINE CROSS CAPACITOR
0.22µ/250V
NOISE FILTER UNIT
THERMISTOR
BRNBLU
G-Y
EARTH
LIVENEUTRAL
RY4
RY3
RY2
RY6
RY5
CM
RY1
CAPACITOR
1.07µF
AC2200V
GRILL HEATER (TOP)
BOTTOM HEATER
MAGNETRON
HIGH VOLTAGE 
TRANSFORMER
B2
D1
D3
B1
F1
F3
F2
A3
A5
1ST.
LATCH SWITCH
THERMAL CUT-OUT
(MG.)
THERMAL
CUT-OUT(OVEN)
MONITOR SWITCH
FUSE 15A
FUSE 
M10A
220 V
~
50Hz
MONITOR RESISTOR
0.8/ 20W
LN
OL
AH SENSOR
RY2:
2ND. 
INTERLOCK 
RELAY
2ND. INTERLOCK 
RELAY CONTROL 
SWITCH