| TROUBLESHOOTING | |||
| Observe all Safety Guidelines detailed throughout this manual | |||
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| PROBLEMS | POSSIBLE | RECOMMENDED |
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| (SYMPTOMS) | CAUSE | COURSE OF ACTION |
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PROBLEMS
Thermal Protection Light comes ON | 1. | Check for obstructions that could |
and fan does not run. |
| prevent the fan from turning. |
NOTE: Fan is thermal controlled and | 2. | Check the fan control circuit. See |
does not continuously run when |
| wiring diagram. |
machine is powered up. |
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| 3. | The fan motor may be faulty. |
| 4. | The Thermal Fan/Snubber PC |
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| board may be faulty. See PC |
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| board LED information. |
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Fan runs continuously. | 1. | The Thermal Fan Thermistor may |
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| be faulty. See wiring diagram. |
| 2. | The Thermal Fan/Snubber PC |
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| board may be faulty. See PC |
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| board LED information. |
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One or both Digital Meters not light- | 1. | The meters may not be receiving |
ing. |
| the voltages from the auxiliary |
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| transformer. Check plug P13. |
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| See wiring diagram. |
| 2. | The Digital meter PC board may |
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| be faulty. |
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Digital Voltmeter not working proper- | 1. | Meter may not be receiving auxil- |
ly or erratic display. |
| iary or sensing voltages. Make |
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| sure plug P12 & P13 are securely |
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| plugged into the Digital meter PC |
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| board and also plug P3 is securely |
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| plugged into the control board. |
| 2. | The may be an open in the volt- |
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| age feedback circuit. See wiring |
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| diagram. |
| 3. The Digital meter PC board may | |
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| be faulty. |
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Contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.