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TROUBLESHOOTING & REPAIR | |||||||
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| TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual | ||||||
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| PROBLEMS |
| POSSIBLE AREAS OF |
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| (SYMPTOMS) |
| MISADJUSTMENTS(S) |
| COURSE OF ACTION |
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| OUTPUT PROBLEMS |
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The output voltage and wire feed is | 1. | Remove the gun. If the problem | 1. | Check the machine's internal |
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present continuously or pulsing |
| is resolved the gun trigger circuit |
| trigger leads for grounds or |
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when gun trigger is NOT activated. |
| is faulty. Repair or replace. |
| shorts. See Wiring Diagram. |
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| 2. | If the problem is not resolved | 2. | The control board may be faulty. |
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| then contact your Local Lincoln |
| Replace. |
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| Electric Authorized Field Service |
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| Facility. |
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Output settings (voltage and/or wire | 1. | Remove the gun. If the problem | 1. | Check leads #326 and #327 for |
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feed speed) are being changed even |
| is resolved the gun thumb switch |
| grounds or shorts. | See Wiring |
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though gun thumb switch or keypad |
| circuit may be faulty. Repair or |
| Diagram. |
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keys are not being activated. |
| replace. |
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| 2. | The Keypad may be faulty. |
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| 2. | If the problem persists after gun |
| Perform the Keypad Test. |
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| removal then the keypad may be |
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| faulty. Check for burned or dam- | 3. | The control board may be faulty. |
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| aged areas on the keypad. |
| Replace. |
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No wire feed or open circuit voltage | 1. | Check the input voltage at the | 1. | Perform the Keypad Test. |
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when gun trigger is pulled. The dis- |
| machine. Input voltage must |
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play lights up but the audio alarm |
| match the rating plate and the | 2. | Perform the Main | Transformer |
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and the display do not function prop- |
| reconnect panel - High or Low |
| Test. |
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erly. |
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| Line message may be displayed. |
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| 3. | The control board may be faulty.- |
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| 2. | Remove the gun. If the problem |
| Replace. |
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| is resolved the gun is faulty.- |
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| Replace. | 4. | The LCD display may be faulty. - |
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| Replace. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con- tact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call 216-