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
7. No control of wire feed. | a. Problem with serial communications. | a. If WFS and preset Volts/Trim parame- | |
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| ters on wire feeder display do not |
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| match those on power source display, |
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| see Problem 14. |
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| b. Defective Wire Feed Unit to | b. Remove Control Box to Wire Feed Unit |
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| Control box cable or harnessing. | Cable and Check F to F, G to G and H to H |
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| for continuity. If any of the continuity tests |
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| fail, replace cable. Otherwise check related |
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| harnesses for continuity (Refer to Wiring |
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| Diagram). If continuity checks O.K. on har- |
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| nessing, proceed to c. |
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| c. Defective wire feed motor tach or | c. Measure voltage across pin 13 (+) of J4 |
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| control PC Board. | and pin 1 |
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| running. If voltage is |
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| control PC board (see Procedure for |
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| Replacing PC Boards). If not, then replace |
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| tachometer. |
| 8. No wire feed, solenoid, or arc volt- | a. Faulty gun or gun trigger switch. | a. Remove gun. Check continuity |
| age. LED display indicated |
| between trigger pins with trigger |
| Synergic 7F has input power. |
| closed. If no continuity repair or |
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| replace gun. |
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| b. Defective Control Box to Wire | b. Replace gun. Remove plug from J4 on con- |
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| Feed Unit Cable or harness wiring | trol board. Check that there is continuity |
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| & connections. | between plug pins 2 and 12 when trigger is |
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| closed and no continuity when trigger is |
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| open. If the continuity tests pass proceed to |
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| c. If not, check I to I and J to J in cable. If |
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| this continuity test fails, replace cable. |
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| Otherwise check wiring harnesses and pro- |
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| ceed to c. if no harness problem is encoun- |
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| tered. |
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| c. Defective control PC board or gun | c. Remove gun. Check voltage across |
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| connector. | trigger sockets on gun connector. |
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| If voltage is > ±11V DC, then gun is |
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| defective. |
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| If voltage is < ±11V DC, then check |
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| the voltage across pin 2 (+) and pin 12 |
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| board. |
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| If the voltage is still < ±11V DC, then |
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| replace control PC board, otherwise, |
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| replace gun connector. (See |
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| Procedure 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
