Sharp R-771 OE User Manual

TROUBLESHOOTING GUIDE (CONT’D)
PROBLEM
POSSIBLE CAUSE
TEST PROCEDURE OR
CORRECTION
Oven fuse blows when cook switch
is pushed. (Oven operation all shut off)
Cook lamp lights, but turntable
motor does not operate.
Oven seems to be operating,
but little or no heat is produced
in oven load.
(Variable cooking control selector
is set at “HIGH” position.)
COOKING CONDITION
Defective rectifier.
Defective short protector.
Defective turntable motor.
Open or loose wire connection.
Defective vari-switch.
Defective magnetron.
Defective rectifier.
Defective high voltage
capacitor.
Procedure C and E.
Replace.
Check wiring.
Procedure K.
Procedure A.
Procedure C.
Procedure D.
Oven operates normally
when the variable cooking
control selector is set at
“HIGH” position,
but not in any other mode.
Oven goes into cook cycles,
but extremely uneven heating
is produced in oven load.
Defective power transformer.
Procedure B.
Open or loose wire connection. Check wiring.
Defective vari-motor.
Procedure L.
Open or loose wire connection.
Check wiring.
Defective variable cooking mechanism.
Check.
Turntable does not rotate during cook
Replace turntable motor
cycle due to the motor failure.
or check wiring.
Oven goes into cook cycle,
but shut down before end
of cycle.
Therm0 cut-out is open.
Open or loose wire connection.
Procedure H.
Check wiring.
12

Sharp R-771 OE Specifications

General

Brand	Sharp
Model	R-771 OE
Category	Microwave Oven
Language	English