Troubleshooting & repair, Caution – Lincoln Electric NA-5S User Manual
Page 67
F-14
TROUBLESHOOTING & REPAIR
F-14
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
MODE FUNCTION PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
The strike light does not light. The
strike controls (voltage and wire feed
speed) do function normally.
The strike light comes on but the
strike controls (voltage and wire feed
speed) do not function normally.
The start light does not light. The
start controls (voltage and wire feed
speed) may or may not function nor-
mally. The NA-5 is at idle with the
selector switch in the “Start” position.
The start light is ON but the start
controls (voltage and wire feed
speed) do not function. The NA-5 is
at idle with the selector switch in the
“Start” position.
1. The procedure board may be
faulty. Replace.
1. The procedure board may be
faulty. Replace.
1. Make sure the start option board
is installed correctly.
2. The procedure board may be
faulty. Replace.
1. If no other mode lights are lit the
start option board may be faulty.
Replace.
2. If the strike light is also lit (along
with the start light) the logic board
may be faulty.
3. If the weld and or crater lights are
also lit (along with the start light)
the procedure board may be
faulty.
1. Check the lead harness between
the start option board and the
procedure board for loose or
faulty connections. See wiring
diagram.
1. Check the lead harness between
the start option board and the
procedure board for loose or
faulty connections. See wiring
diagram.