TROUBLESHOOTING
| TROUBLE | CAUSE | WHAT TO DO | ||
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| M. Poor arc characteristics in | 1. | Capacitor bank not switching in. | 1. | Check the Mode SCR (SCR7). Should be on |
| GMAW mode. |
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| when in GMAW and FCAW modes. |
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| 2. | Capacitor(s) in output circuit failed. A failure | 2. | Replace entire bank of capacitors. Do not |
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| is indicated if the small vent plug on top of a |
| replace individual capacitors. |
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| capacitor is raised or blown out. |
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| WARNING: The liquid electrolyte in these |
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| capacitors is toxic. Avoid contact with any |
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| portion of your body. Clean up vented |
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| electrolyte using rubber gloves and a water |
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| dampened cloth. Remove any electrolyte |
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| which gets on skin using soap and water. |
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| N. Ammeter displays “Err” and | 1. | An error has been detected. | 1. | See Error code Troubleshooting Guide. |
| Voltmeter displays a number |
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ACCESSORY TROUBLESHOOTING
TROUBLE | CAUSE | WHAT TO DO | ||
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A. Output Control not functioning | 1. | Output Control switch in wrong | 1. | Place switch in “Remote”. |
on Remote Control. |
| position. |
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| 2. | Faulty Output Control switch. | 2. | Check & replace if found faulty. |
| 3. | Faulty Remote Control | 3. | Check & replace if found faulty. |
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| potentiometer. |
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| 4. | Leads or connections open in | 4. | Check all leads & connections. |
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| control circuit. |
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| 5. | Faulty Control P.C. Board. | 5. | See P.C. Board |
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| Troubleshooting Procedure. |
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B. Output Control not functioning | 1. | Output Control switch in the | 1. | Place switch in “Local” position. |
on the machine. |
| wrong position. |
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| 2. | Faulty Output Control switch. | 2. | Check & replace if found faulty. |
| 3. | Faulty Output Control | 3. | Check & replace if found faulty. |
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| potentiometer. |
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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, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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