Samsung Electronics
6-2
Troubleshooting
SYMPTOM
CAUSE
CORRECTIONS
Oven lamp and fan motor turn on
1. M isadjustment or loose w iring
Adjust door and latch sw itches.
of primary latch sw itch
2. Defective primary latch sw itch
Oven can program but timer
1. Open or loose w iring of secondary
Adjust door and interlock sw itches.
does not start.
interlock sw itch
2. Off-alignment of primary interlock
3. Defective secondary interlock S/ W
M icrow ave output is low ;.
1. Decrease in pow er source voltage.
Consult electrician.
Oven takes longer time to
2. Open or loose w iring of magnetron
cook food.
filament circuit. (Intermittent oscillation))
3. Aging of magnetron
Fan motor turns on w hen plugged in
Loose w iring of door sensing sw itch
Check w ire of door sensing sw itch.
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 screw s of fan motor.
2. Loose screw s on H.V.Transformer
Tighten screw s of H.V.Transformer.
3. Shorted H.V.Diode
Replace H.V.Diode.
Turntable motor does not rotate.
1. Open or loose w iring of turntable motor.
Check the w ire of turntable motor
2. Defective turntable motor.
Replace turntable motor.
Oven stops operation during cooking
1. Open or loose w iring of primary
Adjust door and latch sw itches.
interlock sw itch
2. Operation of thermal cutout(M agnetron)
Sparks
1. M etallic w are or cooking dishes
Inform the customer.
touching on the oven w all.
2. Ceramic w are trimmed w ith gold or
Do not use any type of cookw are w ith
silver pow der also causes sparks.
metallic trimming.
Uneven cooking
Uneven intensity of microw ave due to
Wrap thinner parts of the food w ith
its characteristics.
aluminum foil.
Use plastic w rap or cover w ith a lid.
Stir once or tw ice w hile cooking
foods such as soup, cocoa, or milk.
Noise from the turntable motor
Noise may result from the motor.
Replace turntable motor.
w hen it starts to operate.
6-2 Electrical Malfunction(continued)
