COMPONENTS | TEST PROCEDURES |
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| Check for continuity of relay 2 with an | POWER |
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| LEVEL |
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| (Remove wire leads from relay 2 and | 1 | 4 sec | 18 sec |
| operate the unit.) | 2 | 6 sec | 16 sec |
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| Relay 7 | 3 | 8 sec | 14 sec |
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| 4 | 10 sec | 12 sec |
RELAY2 |
| 5 | 12 sec | 10 sec |
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| 6 | 14 sec | 8 sec |
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| 7 | 16 sec | 6 sec |
| Figure 30 | 8 | 18 sec | 4 sec |
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| wCAUTION : The relay connector 2(White) | 9 | 20 sec | 2 sec |
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| and 5(Red) must be correctly connected | 10 | 22 sec | 0 |
| Relay 6. |
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| These two connectors are not Inter- |
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| changeable. |
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NOTES:
•A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.
•MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.
•WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES.
B. CHECKOUT PROCEDURES
(1) CHECKOUT PROCEDURES FOR FUSE BLOWING
CAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.
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| PROBLEMS |
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| Fuse blows immediately after |
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| the door is closed. |
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| Improper operation of the primary interlock, secondary |
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| Fuse blows immediately after |
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| interlock switches and/or the interlock monitor switch. |
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| the door is opened. |
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| Fuse blows when the door is closed and START |
| Malfunction of the high voltage transformer; the high |
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| key is touched. |
| voltage capacitor including the diode, the magnetron, |
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| the blower motor or the circuit board. |
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NOTES:
•If the fuse is blown by an improper switch operation, replace the all Interlock switches, PCB Ass’y and the fuse at the same time. After replacing the the all Interlock switches, PCB Ass’y,Fuse with new ones, make sure that they are correctly connected.
•Check for microwave energy leakage according to interlock adjustment procedures on page