Samsung CM1929 - Error Codes & Corrections

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6. Troubleshooting
SYMPTOM CAUSE CORRECTIONS
Oven lamp goes off 1. Loose lead wire or open lament
2. Misadjustment of latch switch
3. Defactive primary latch switch
Tighten lamp lead wire or replace with a
new lamp
Microwave output is low;.
Oven takes longer time to
cook food.
(Noheat while oven lamp and
ventilation)
1. Decrease in power source voltage.
2. Open or loose wiring of magnetron
lament circuit.
(Intermittent oscillation))
3. Aging of magnetron
4. Defective high voltage compnents
H.V. Transfomer
H.V. Capacitor
H.V. Diode, H.V. Fuse
Magnetron
Consult electrician.
Check high coltage component
according to component test procedure
and replace if defective
Oven does not operate and
return to the plugged in mode.
Defective Ass’y PCB Replace PCB main.
Loud buzzing noise can be
heard.
1. Loose fan and fan motor
2. Loose screws on H.V.Transformer
3. Shorted H.V.Diode
4. Loose or missing screw on Cover-
Back
Tighten screws of fan motor.
Tighten screws of H.V.Transformer.
Replace H.V.Diode.
Tighten screws of Cover-Back
Drive motor not work.
(Ass’y stirrer dose not rotate.)
1. Open or loose wiring of turntable
motor.
2. Defective turntable motor.
3. Defective ass’y stirrer
Check the wire of drivemotor
Replace drive motor.
Replace ass’y stirrer.
Oven stops operation during
cooking
1.Operationofthermalcutout
(Magnetron or Cavity)
2. Fan motor does not rotate.
Adjust door and latch switches.
Replace Fan motor.
Sparks 1. Metallic ware or cooking dishes
touching on the oven wall.
2. Ceramic ware trimmed with gold or
silver powder also causes sparks.
Informthecustomerofproperuse.
Do not use any type of cookware with
metallic trimming.
Uneven cooking Uneven intensity of microwave due to
its characteristics.
Wrap thinner parts of the food with
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 when it starts to
operate.
Noise may result from the motor. Replace turntable motor.
Oven can program but timer
does not start.
Defective circuitry of Start function of
Main P.C.B Ass’y
Loose lead wires.
Check circuitry of Start function of Main
P.C.B Ass’y and replace if defective.
Adjust od repair loose wires.