Troubleshooting & repair, Caution – Lincoln Electric NA-5S User Manual
Page 64
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TROUBLESHOOTING & REPAIR
F-11
NA-5
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric
Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.
CAUTION
WIRE FEEDING PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
The wire feeds down when either
inch button is pressed.
1. Wth the unit at idle (no buttons
pressed) observe light 7E on the
logic board. It should be OFF.
2. If light 7E is ON the logic board
may be faulty. Replace.
3. If light 7E is OFF the power board
may be faulty. Replace.
1. Check the inch up and inch down
switches (buttons) for proper oper-
ation and wiring. See wiring dia-
gram.