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| TROUBLESHOOTING & REPAIR |
| |
| TROUBLESHOOTING GUIDE | Observe Safety Guidelines | |
|
| detailed in the beginning of this manual. | |
PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED |
(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION |
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|
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| FUNCTION PROBLEMS |
|
The CV output contactor does not | 1. Make sure the Wire Feeder | 1. With the jumper installed in pins |
pull in when using a wire feeder | switch (S8) is in the “WITH | “D” and “C” in the 14 pin |
with a control cable connected to | CONTROL CABLE” position. | amphenol, check for 12VDC |
the RANGER | 2. Install a jumper wire from pins | from leads #224F(+) to |
| the CV output contactor. If | |
| “D” to “C” on the 14 pin amphe- | |
| 12VDC is present and the con- | |
| nol. If the output contactor acti- | |
| tactor does NOT activate, then | |
| vates, the problem is external to | |
| the contactor may be defective. | |
| the RANGER | |
|
| |
| feeder or control cable may be | 2. If the correct voltage is NOT |
| faulty. | present in Step #1, check from |
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| lead #224F to ground (lead #5) |
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| for the presence of 12VDC. If |
|
| 12VDC is present, then check |
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| the continuity of lead 2C |
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| through the RF bypass board to |
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| the 14 pin amphenol. See |
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| Wiring Diagram. |
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| 3. If 12VDC is NOT present from |
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| lead #224F to ground (lead #5), |
|
| then check the #224F lead for |
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| an open circuit. See Wiring |
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| Diagram. |
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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
RANGER
