PROBLEMS
|
|
|
|
|
|
|
|
|
| PROBLEM |
|
| POSSIBLE CAUSE |
|
| WHAT TO DO |
|
|
|
|
|
|
|
|
|
|
| 7. No control of wire feed. |
|
| a. Defective Wire Feed Unit to |
|
| a. Remove Control Box to Wire Feed |
|
|
|
|
| Control box cable or harnessing. |
|
| Unit Cable and Check F to F, G to G |
|
|
|
|
|
|
|
| and H to H for continuity. If any of the |
|
|
|
|
|
|
|
| continuity tests fail, replace cable. |
|
|
|
|
|
|
|
| Otherwise check related harnesses |
|
|
|
|
|
|
|
| for continuity (Refer to Wiring |
|
|
|
|
|
|
|
| Diagram). If continuity checks O.K. |
|
|
|
|
|
|
|
| on harnessing, proceed to b. |
|
|
|
|
| b. Defective wire feed motor tach or |
|
| b. Measure voltage across pin 2 (+) of |
|
|
|
|
| control PC Board. |
|
| J3 and pin 3 |
|
|
|
|
|
|
|
| with motor running. If voltage is 1.5- |
|
|
|
|
|
|
|
| 3.5V then replace control PC board |
|
|
|
|
|
|
|
| (see Procedure for Replacing PC |
|
|
|
|
|
|
|
| Boards). If not, then replace |
|
|
|
|
|
|
|
| tachometer. |
|
|
|
|
| c. Problem with serial |
|
| c. See 2e. |
|
|
|
|
| communications in input control |
|
|
|
|
|
|
|
| cable. |
|
|
|
|
|
|
|
|
|
|
|
|
|
| 8. No wire feed, solenoid, or arc |
|
| a. Faulty gun or gun trigger switch. |
|
| a. Remove gun. Check continuity |
|
| voltage. LED display indicated |
|
|
|
|
| between trigger pins with trigger |
|
| Synergic 7F has input power. |
|
|
|
|
| closed. If no continuity repair or |
|
|
|
|
|
|
|
| replace gun. |
|
|
|
|
| b. Defective Control Box to Wire |
|
| b. Replace gun. Remove plug from J1 |
|
|
|
|
| Feed Unit Cable or harness |
|
| on control board. Check that there is |
|
|
|
|
| wiring & connections. |
|
| continuity between plug pins 2 and 8 |
|
|
|
|
|
|
|
| when trigger is closed and no |
|
|
|
|
|
|
|
| continuity when trigger is open. If the |
|
|
|
|
|
|
|
| continuity tests pass proceed to c. If |
|
|
|
|
|
|
|
| not, check I to I and J to J in cable. If |
|
|
|
|
|
|
|
| this continuity test fails, replace |
|
|
|
|
|
|
|
| cable. Otherwise check wiring |
|
|
|
|
|
|
|
| harnesses and proceed to c. if no |
|
|
|
|
|
|
|
| harness problem is encountered. |
|
|
|
|
| c. Defective control PC board or |
|
| c. Remove gun. Check voltage across |
|
|
|
|
| gun connector. |
|
| trigger sockets on gun connector. |
|
|
|
|
|
|
|
| If voltage is > ±11V DC, then gun is |
|
|
|
|
|
|
|
| defective. |
|
|
|
|
|
|
|
| If voltage is < ±11V DC, then check |
|
|
|
|
|
|
|
| the voltage across pin 2 (+) and pin 8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| board. |
|
|
|
|
|
|
|
| If the voltage is still < ±11V DC, then |
|
|
|
|
|
|
|
| replace control PC board, otherwise, |
|
|
|
|
|
|
|
| replace gun connector. (See |
|
|
|
|
|
|
|
| Procedure for Replacing PC boards.) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
– 31 –