B.CHECKOUT PROCEDURES
(1)CHECKOUT PROCEDURES FOR FUSE BLOWING
CAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.
PROBLEMS |
| CAUSES | |
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Fuse blows immediately after |
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| Improper operation of the primary interlock, |
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the door is closed. |
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| secondary interlock switches and/or the interlock |
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Fuse blows immediately after |
| monitor switch. |
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the door is opened. |
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Fuse blows when the door is closed and START key |
| Malfunction of the Inverter, the magnetron, |
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is touched. |
| the fan motor or the circuit board. |
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NOTES:
-If the fuse is blown by an improper switch operation, replace the defective switches and the fuse at the same time. After replacing the defective switches with new ones, make sure that they are correctly connected.
-Check for microwave energy leakage according to “1. ADJUSTMENT PROCEDURES” on page 3, when the primary interlock, secondary interlock switches and/or the interlock monitor switches are adjusted or replaced.
