THERMISTOR CHART
Duct
Magnetron
Thermistor connector
“HINT”
Resistance KĦ
8000
7000
6000
5000
4000
3000
2000
1000
0
0 | 10 | 20 | 30 | 40 | 50 | 60 |
Temperature •Ž
PROCEDURE FOR DETERMING WHETHER THE UPPER MAGNETRON CIRCUIT OR LOWER MAGNETRON CIRCUIT IS DEFECTIVE.
SYMPTOM:One magnetron does not work giving less than normal heat.
Caution:
Make sure that cabinet (outer wrap) and rear plate are not removed from the oven for your safety.
1.Operate oven as follows.
1)Place a cup of water in the oven 2)Close the door.
3)Touch “CLEAR”, “TIME”, “5”, “0” and “START” keys to operate the oven for 50 seconds with full power level.
2.Determine if the Exhaust air is warm in the following positions..
1)Put your hand near the exhaust duct outside of the rear plate to feel the exhaust (Never remove
the cabinet and rear plate from the oven for your safety when you put your hand near exhausting duct.) 2)If air from the upper position of the duct is not warm,the upper magnetron circuit is defective.
If air from the lower position of the duct is not warm,the lower magnetron circuit is defective.
Cabinet(outer wrap)
Rear Plate
Rear Plate
Upper position
Exhaust Duct
Lower position
Figure 11
The H.V Transformer for operating the upper Magnetron is located on the inside of the rear plate
The H.V Transformer for operating the lower Magnetron is located on the inside of the rear plate
- 12 -
