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F-12
TROUBLESHOOTING & REPAIR
F-12
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 speed and voltage controls do
not function. All of the mode lights
function properly.
All the mode lights function properly.
None of the speed controls operate
properly.
All the mode lights function properly.
None of the voltage controls operate
properly.
1. Check lights 1A and 1B located
on the power board. They should
both be ON.
2. If both lights 1A and 1B are ON
the control board may be faulty.
Replace.
1. The control board may be faulty.
Replace.
1. The voltage board may be faulty.
Replace.
1. If lights 1A and /or 1B are OFF
perform the
DC Power Supply
Test.
2. Perform the
T1 and T2
Transformer Test.
3. The power board may be faulty.
Replace.
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