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| TROUBLESHOOTING & REPAIR |
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| Observe Safety Guidelines |
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| TROUBLESHOOTING GUIDE | |
| detailed in the beginning of this manual. |
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| PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | ||
| (SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | ||
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| FUNCTION PROBLEMS |
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| The display is not functioning prop- | 1. | Refer to the Operation Section | 1. Check for loose or faulty plug | |
| erly. |
| of this manual for normal opera- | connections between the | |
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| tion characteristics. | Display board and the control | |
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| board. See the wiring diagram. | |
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| 2. | Check for proper current and | 2. The display board may be faulty. | |
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| voltage calibration. | ||
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| 3. The control board may be faulty. | |
A fault or error code is displayed. | 1. See | the | Fault | Code 1. See Fault Code Explanations. |
| Explanations. |
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For no apparent reason the welding 1. | Check the welding cables for | 1. | Perform | the | Voltage and | |
characteristics have change. | loose or faulty connection. |
| Current |
| Calibration | |
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| Procedure. |
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2. | Make sure the machine’s mode |
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| and output are set correctly for | 2. | Perform |
| the | Current |
| the process being used. (CV, |
| Transducer Test. |
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| CC,TIG etc.) |
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| 3. | Perform | the | Output | Diode |
3. | If Mig welding make sure the |
| Module Test |
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| shielding gas and wire speed are |
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| correct for the process being | 4. | The control board may be faulty. | |||
| used. |
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4. | Check for proper current and | 5. | The advanced process panel (If | |||
| voltage calibration. |
| used) may be 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, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
