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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 |
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(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | |||||
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| OUTPUT PROBLEMS |
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Major physical or electrical dam- | 1. Contact your local authorized | 1. | Contact | the Lincoln Electric | |||
age is evident when the sheet |
| Lincoln Electric Field Service |
| Service Department, | |||
metal cover(s) are removed. |
| Facility for technical assistance. |
| 2531 or | |||
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Machine is dead – no output – no | 1. | Make sure that the input power | 1. | Check the input power switch | |||
fan – no status indicator lights. |
| switch is in the “ON” position. |
| (S1) for proper operation. See | |||
| 2. Check the input voltage at the |
| the Wiring Diagram. |
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| machine. | Input voltage must | 2. | Check the leads associated | ||
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| match the rating plate and the |
| with the power switch (S1) and | |||
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| reconnect panel. |
| the auxiliary transformer (T2) for | |||
| 3. | Check for | blown or missing |
| loose or | faulty connections. | |
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| See the Wiring Diagram. | |||||
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| fuses in the input lines and the |
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| 0.6 amp slow blow reconnect | 3. | Perform the Auxiliary Trans- | |||
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| fuse. |
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| former Test. |
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Machine is dead - not output - no | 1. | Check the input voltage at the | 1. | Perform | the | Auxiliary | |
status indicator lights - fans run. |
| machine. | Input voltage must |
| Transformer Test. |
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| match the rating plate and the | 2. | Perform | the Low | Voltage | |
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| reconnect panel. | |||||
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| Circuit Test. |
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| 3. | Perform | the Input | Rectifier |
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| Test. |
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| 4. | The control board may be | ||
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| faulty. Replace. |
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| 5. | The display board may be | ||
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| faulty. Replace. |
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All status indicators remain imme- | 1. The microprocessor has experi- | 1. The control board | may be | ||||
diately after power up. |
| enced a memory fault. Contact |
| faulty. Replace. |
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| your Local | Lincoln Authorized |
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| Field Service Facility. |
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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
