8. TROUBLE SHOOTING GUIDE
Following the procedures below to check if the oven is defective or not.
1.Check grounding before checking trouble.
2.Be careful of the high voltage circuit.
3.Discharge the high voltage capacitor.
4.When checking the continuity of the switches, fuse or high voltage transformer, disconnect one lead wire from these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.
NOTE : When electric parts are checked, be sure the power cord is not inserted the wall outlet. Check wire harness, wiring, and connected of the terminals and power cord before check parts listed below.
TROUBLE 1) Oven does not operate at all; inputs can not be accepted.
CONDITION |
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Fuse blows |
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| interlock monitor switch |
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| ( COM |
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| switch with door closed |
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CAUSE
Malfunction Of Interlock monitor switch
Malfunction Of interlock switch
REMEDY
Replace
Replace
Check continuity of primary interlock switch contact with door partially open until
interlock monitor switch contact close ( COM 
NC close )
Continuity
Shorted contacts of Primary Interlock switch
Replace
Check continuity of Primary winding of low voltage transformer
0- or infinite
Approx.
530
( normal )
Defective Low voltage transformer
Replace
Disconnect high voltage |
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Fuse and operate the unit |
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Defective high voltage transformer
Replace
18
