Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
TROUBLESHOOTING & REPAIR |
| |||||
|
|
| ||||
Observe Safety Guidelines |
|
|
| TROUBLESHOOTING GUIDE | ||
detailed in the beginning of this manual. |
|
|
|
| ||
|
|
|
|
| ||
PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
| ||
(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION | |||
|
|
|
|
|
| |
|
| OUTPUT PROBLEMS |
|
|
| |
The output terminals are | always | 1. Remove any external leads that | 1. Check for an internal short | |||
electrically “hot.” |
| may be connected to the 14 pin | between leads #2 and #4. See | |||
|
| amphenol or the terminal strip. | the Wiring Diagram. |
| ||
|
| If the | problem disappears, the | 2. Remove plug J3 | (SCR gate | |
|
| fault | is in the control cable or | |||
|
| leads) from the control board. If | ||||
|
| wire feeder. | ||||
|
| the | problem disappears, the | |||
|
|
|
| |||
|
|
|
| control board may be faulty. | ||
|
|
|
| Replace. If the output terminals | ||
|
|
|
| are still electrically “hot,” perform | ||
|
|
|
| the | SCR/Diode | Rectifier |
|
|
|
| Bridge Test. |
| |
|
|
|
| 3. The snubber board may be | ||
|
|
|
| faulty. Check or replace. | ||
|
|
|
|
|
|
|
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
