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TROUBLESHOOTING & REPAIR | |||||||||
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TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS |
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| POSSIBLE AREAS OF |
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(SYMPTOMS) |
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| MISADJUSTMENTS(S) |
| COURSE OF ACTION |
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| FUNCTION PROBLEMS |
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The audio alarm does NOT sound | 1. | The background noise may be | 1. | Check the voltage across pins | |||||
when a key is pressed, but display |
| too loud for user to hear beeper. |
| 1J7 (+) to 2J7 | |||||
changes. |
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| board. When the keys are | |
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| pressed there should be a brief | |
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| indication, or pulse, of a DC volt- | |
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| age. If the voltage "pulse" is pre- | |
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| sent then the Piezo alarm may | |
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| be defective.- Replace. |
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| If the DC voltage pulse is NOT | |
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| present when the keys are | |
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| pressed then the control board | |
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| may be |
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The audio alarm does not sound | 1. | Remove the gun. If the problem | 1. | Perform the Keypad Test. |
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when a key is pressed, and the dis- |
| is resolved the gun is faulty.- |
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play does NOT change. |
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| Replace. |
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| 2. | The control board may be faulty. | |
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| - Replace. |
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| 3. | The LCD Display may be faulty.- | |
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| Replace. |
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| 1. | Make certain that a process is | 1. | Check the gas solenoid by dis- | ||||
There is no gas flow when gun trig- |
| selected that requires gas flow. |
| connecting it from the control | |||||
ger is pulled. Wire feeds and weld |
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| board (Plug J8) and applying a | ||
voltage is present. The display func- | 2. | Check gas source and hoses for |
| 12VDC external supply to the | |||||
tions properly. |
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| leaks or kinks. |
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| gas solenoid. If the solenoid | ||
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| does NOT activate then it may | |
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| be faulty. - Replace. |
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| 2. | The control board may be faulty.- | |
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| Replace. |
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No readable message on the dis- | 1. | Check the input voltage at the | 1. | The display board may be faulty. | |||||
play. Backlight is lit indicating there |
| machine. | The | input | voltage |
| Replace. |
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is power to the machine. |
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| must match the rating plate and |
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| the reconnect panel. |
| 2. | The control board may be faulty. | |||
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| Replace. |
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| 2. | Turn the line switch (S1) off. |
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| Wait a minute and turn power |
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| on. If problem is not resolved |
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| contact | your | local | Lincoln |
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| Electric Authorized Field Service |
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| Facility. |
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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, con- tact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call 216-
