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TROUBLESHOOTING & REPAIR |
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TROUBLESHOOTING GUIDE |
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| Observe Safety Guidelines | ||||
| detailed in the beginning of this manual. | ||||||
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PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED |
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(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION |
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| OUTPUT PROBLEMS |
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The machine is | 1. Make certain the input power | 1. | Check the input power switch | ||||
no | switch SW1 is in the ON posi- |
| SW1 for proper operation. Also | ||||
be off. | tion. |
| check the associated leads for | ||||
| 2. Check the main input fuses (or |
| loose or | faulty connections. | |||
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| See the Wiring Diagram. |
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| breakers). If open, replace or |
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| reset. | 2. | Check circuit breaker CB4 for | ||||
| 3. Check the 6 amp CB4 breaker |
| proper operation. |
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| located in the reconnect area. | 3. | Perform the T1 | Auxiliary | |||
| Reset if tripped. |
| Transformer Test. |
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| 4. Make certain the reconnect | 4. | The power board rectifier may | ||||
| panel is configured correctly for |
| be faulty. | Check rectifier | and | ||
| the applied input voltage. |
| associated | wiring. | See | the | |
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| Wiring Diagram. |
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| 5. | Perform the DC Bus Board | ||||
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| Test. |
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| 6. | Perform the Power Board Test. | ||||
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| 7. | The Control Board may be | ||||
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| faulty. |
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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, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
