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| TROUBLESHOOTING & REPAIR | ||||
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| Observe all Safety Guidelines detailed throughout 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
The machine does not have max- imum weld output.
1.Check all
2.Put output control switch (SW3) in “OUTPUT CON- TROL AT
1.Check the output control potentiometer (R1) and asso- ciated circuitry for loose or faulty connections. See wiring diagram.
2.Perform Control Board Test.
3.Perform Firing Board test.
4.Perform Main Transformer Test.
5.Perform SCR Output Bridge Test.
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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 the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call
