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| TROUBLESHOOTING & REPAIR |
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| TROUBLESHOOTING GUIDE | Observe Safety Guidelines | |
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| detailed in the beginning of this manual. | |
| PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | ||
| (SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | ||
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| OUTPUT PROBLEMS |
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| Circuit breaker (5 amp) trips when | 1. | Make sure that not more than | 1. | The 5 amp circuit breaker may |
| gun trigger is pulled – fans run. |
| 5 amps of auxiliary power are |
| be faulty. Test or replace. |
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| being used. | 2. | Perform the Trigger Circuit |
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| 2. | Remove the wire feeder’s con- |
| and Wiring Harness Test. |
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| trol cable(s) from the Power |
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| Wave. If the symptoms disap- |
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| pear, replace the wire feeder |
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| and cables with known good |
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| equipment. If the problem is |
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| solved, the wire feeder or con- |
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| trol cable is faulty. |
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| The machine intermittently loses | 1. | If after a few seconds the con- | 1. | Perform the Static Capacitor |
| output. The wire feeder still feeds |
| tactor “pulls” back in, then |
| Balance Test. |
| wire. |
| check for high input line | 2. | Perform the Welding |
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| voltage. | ||
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| Feedback Test. | |
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| 3. | The control board may be |
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| faulty. Replace. |
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| 4. | The shunt board assembly may |
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| be faulty. Replace. |
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| 5. | Perform the Switch Board |
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| Test. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-
