TROUBLESHOOTING | ||
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| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
23. Display is blank. | a. Power source is OFF. | a. Turn ON power source. |
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| b. Feeder supply fuse or circuit | b. Check input cable and feeder unit for |
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| breaker at power source is blown | short in 41 and 42 circuit. Check for |
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| or tripped. | shorted motor. Replace fuse or reset |
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| circuit breaker. |
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| c. Display or Control PC board is | c. Observe LED mounted on Control PC |
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| bad. | board. It should blink on and off at a |
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| controlled rate of 1 second ON and 1 |
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| second OFF. If so, then replace |
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| Display PC board. If not, replace |
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| Control PC board. (See Procedure |
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| for Replacing |
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24. Wire feed speed is consistent | a. Defective gearbox ratio sensing or | a. Remove Control board plug form J4. |
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and adjustable, but operates at | Control board. | If you have a high speed Wire Feed |
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the wrong speed. |
| Unit check that you have continuity |
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| between plug P4 pins 10 and 11. |
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| Likewise, if you have a standard |
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| speed Wire Feed Unit make sure that |
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| you do not have continuity between |
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| plug P4 pins 10 and 11. If the conti- |
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| nuity test fails, check continuity of K to |
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| K and L to L connections in |
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| cable between Control Box and Wire |
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| Drive Unit. Also check for no continu- |
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| ity between K and L connections when |
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| cable is detached. If either of these |
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| tests failed, replace cable. Otherwise |
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| check continuity of leads 530 and 531 |
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| in the Control Box and the Wire Drive |
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| Unit. (See wiring diagram.) Repair or |
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| replace faulty harness. Otherwise, |
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| replace Control board. (See proce- |
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| dure for replacing PC boards.) |
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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, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SYNERGIC 7F & FH
