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TROUBLESHOOTING & REPAIR | ||
Observe Safety Guidelines |
| TROUBLESHOOTING GUIDE |
detailed in the beginning of this manual. |
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FUNCTION PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED |
(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION |
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| FUNCTION PROBLEMS |
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No current regulation in the Stick | 1. Make sure the machine is set- | 1. The Superimposition Board may |
mode. Low open circuit voltage. | up and configured correctly for | be faulty |
| the Stick mode, |
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| 2. The Output Module Transistor |
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| Board may be faulty. See the |
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| Secondary Power Board Test |
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| and Wiring Diagram |
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There is no response to changes to | 1. Make sure the correct input | 1. The Control/Display board may |
the output control settings. No cur- | voltage is applied to the | be faulty. |
rent regulation in all modes. | machine. 230 or 115VAC. |
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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