TROUBLESHOOTING GUIDE
Following the procedure below to check if the oven is defective or not.
1.Check grounding before trouble checking.
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 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 the parts listed below.
(TROUBLE 1) Oven does not operate at all ; any inputs can not be accepted.
CONDITION
Fuse blows.
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Check continuity of interlock |
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| Continuity |
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monitor switch with door closed |
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| No Continuity |
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CAUSE
Malfunction of interlock moni- tor switch
REMEDY
Replace
NOTE 1
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| Check continuity of both primary |
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| No Continuity |
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| and secondary interlock switch |
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| Malfunction of |
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| interlock switch |
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| with door colosed |
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| Continuity |
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| Check continuity of primary inter- |
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| Continuity |
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| lock switch contact with door |
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| tacts of primary |
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| partially open until interlock mon- |
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| interlock switch. |
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| itor switch contact close |
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| (COM NO) |
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| Check continuity of primary |
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| 0 or infinite |
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| Defective low |
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| voltage trans- |
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| Approx. |
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| former |
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| 150~310 |
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| (normal) |
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| Disconnect high voltage fuse |
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| Fuse again |
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| Defective low |
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| blows |
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| voltage trans- |
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| and operate the unit |
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Replace
NOTE 1
Replace
NOTE 1
Replace
Replace
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