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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 |
| POSSIBLE AREAS OF |
| RECOMMENDED |
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| (SYMPTOMS) |
| MISADJUSTMENTS(S) |
| COURSE OF ACTION |
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| FUNCTION PROBLEMS |
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The display backlight does not func- | 1. | Check the input voltage at the | 1. | With the display board discon- | ||
tion. |
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| machine. Input voltage must |
| nected test for 12VDC from pins | |
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| match the machine rating plate |
| 1J1(+) to | |
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| and the reconnect panel. |
| present and the display board | |
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| backlight does NOT function | |
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| then replace the display board. | |
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| See Wiring Diagram. |
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| 2. | If the 12VDC is not present at | |
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| pins 1J1 to 2J1 then perform the | |
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| Main Transformer Test. |
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| 3. | The control board may be faulty. | |
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| Replace. |
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The machine stops feeding wire | 1. | Check for mechanical restric- | 1. | Check the motor armature cur- | ||
while welding and the MOTOR |
| tions in the wire feeding path. |
| rent. Normal armature current is | ||
OVERLOAD message appears on |
| The gun cable may be clogged. |
| 1.5 - 2.5 amps. |
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the display. |
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| If the motor armature current is | ||
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| normal the control board may be | |
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| 2. | If the motor armature current is | |
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| high (over 3 amps) and there are | |
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| NO restrictions in the wire feed- | |
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| ing path then the motor or gear | |
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| box may be | |
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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-
