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| TROUBLESHOOTING & REPAIR | |
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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The | 1. Make sure the reconnect switch | 1. | Check the reconnect switch and |
ing output. The displays are lit. | is configured correctly for the |
| associated leads for loose or |
| input voltage applied. |
| faulty connections. See the |
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| wiring diagram. |
| 2. Make sure the Weld Terminals | 2. | Perform the Main Switch |
| Select is ON. If the problem is | ||
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| Board Test. | |
| solved the remote control |
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| device or associated circuitry | 3. | Perform the Power Board |
| may be faulty. See the wiring | ||
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| Test. | |
| diagram. |
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| 3. Put the Control Select in the | 4. | Perform the Output Diode |
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| Module Test. | |
| Local position. If the problem is |
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| solved the remote control | 5. | The control board may be faulty. |
| device or associated circuitry | 6. | The input filter capacitors may |
| may be faulty. | ||
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| be faulty. Check and replace if | |
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| 4. If an error code is displayed see |
| necessary. |
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| Fault Code Explanations. | 7. | The remote board may be |
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| faulty. |
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The | 1. The input voltage may be too | 1. | Perform the Output Rectifier |
output. | low, limiting the output capabili- |
| Test. |
| ty of the machine. Make cer- |
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| tain the input voltage is correct | 2. | Perform the Main Switch |
| for the machine and the recon- |
| Board Test. |
| nect switch and jumper lead |
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| configuration. | 3. | Perform the Power Board |
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| Test. |
| 2. The welding current may be too |
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| high . The machine will fold | 4. | Perform the Current |
| back to 100 amps if the weld- |
| Transducer Test. |
| ing current exceeds 450 amps. |
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| 5. | If the preset function is not |
| 3. Make sure the machine is in |
| performing properly the status |
| "Local" output control.. If the |
| panel board or the output |
| problem is resolved the Remote |
| control may be faulty. |
| control board or the external |
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| remote control unit may be | 6. | The control board may be |
| faulty. |
| 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
