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Samsung Electronics6-2
Troubleshooting
SYMPTOM CAUSE CORRECTIONS
Oven lamp and fan motor turn on 1. Misadjustment or loose wiring Adjust door and latch switches.
of primary latch switch
2. Defective primary latch switch
Oven can program but timer 1. Open or loose wiring of secondary Adjust door and interlock switches.
does not start. interlock switch
2. Off-alignment of primary interlock
3. Defective secondary interlock S/W
Microwave output is low;. 1. Decrease in power source voltage. Consult electrician.
Oven takes longer time to 2. Open or loose wiring of magnetron
cook food. filament circuit. (Intermittent oscillation))
3. Aging of magnetron
Fan motor turns on when plugged in Loose wiring of door sensing switch Check wire of door sensing switch.
Oven does not operate and return Defective Ass'y PCB Replace PCB main.
to the plugged in mode.
Loud buzzing noise can be heard. 1. Loose fan and fan motor Tighten screws of fan motor.
2. Loose screws on H.V.Transformer Tighten screws of H.V.Transformer.
3. Shorted H.V.Diode Replace H.V.Diode.
Turntable motor does not rotate. 1. Open or loose wiring of turntable motor. Check the wire of turntable motor
2. Defective turntable motor. Replace turntable motor.
Oven stops operation during cooking 1. Open or loose wiring of primary Adjust door and latch switches.
interlock switch
2. Operation of thermal cutout(Magnetron)
Sparks 1. Metallic ware or cooking dishes Inform the customer.
touching on the oven wall.
2. Ceramic ware trimmed with gold or Do not use any type of cookware with
silver powder also causes sparks. metallic trimming.
Uneven cooking Uneven intensity of microwave due to Wrap thinner parts of the food with
its characteristics. aluminum foil.
Use plastic wrap or cover with a lid.
Stir once or twice while cooking
foods such as soup, cocoa, or milk.
Noise from the turntable motor Noise may result from the motor. Replace turntable motor.
when it starts to operate.
6-1 Electrical Malfunction(continued)