Troubleshooting & repair, Caution – Lincoln Electric NA-5S User Manual
Page 61
F-8
TROUBLESHOOTING & REPAIR
F-8
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 will not inch down but does
inch up properly. The wire does not
feed in either direction when the start
button is pressed.
The wire will not inch down but does
inch up properly. When the start
button is pressed the wire feeds up
instead of down.
1. Check to make sure that light 7J,
on the logic board, is lit when the
inch down button is pressed. If
not check the inch down switch
and associated leads. See wiring
diagram.
2. Check to make sure that light 7B,
on the logic board, is lit when the
start button is pressed. If not
check the start button and associ-
ated leads. See wiring diagram.
1. For codes below 8300 make sure
the jumper plug is securely
installed in the harness receptacle
near the voltage board.
2. Check to make sure light 7E, on
the logic board, is on when the
inch down button is pressed. If
light 7E is ON the power board
may be faulty.
3. Check the 1/8 amp fuse on the
voltage board . Replace if faulty.
1. The logic board may be faulty.
Replace.
2. The power board may be faulty.
Replace.
1. Jumper the AUTO tabs on the
voltage board. (Above code
8300) Press the inch down but-
ton. If the wire inches down the
voltage board may be faulty.
Replace.
If the wire does NOT inch down
the logic board may be faulty.
Replace.