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GENERAL PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
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 1-888-935-3877.
CAUTION
THEORY OF OPERATION
F-4 F-4
V160-S & -T
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The machine is dead
No LED
No Fan
1. Make sure that the input volt-
age is present
2. Check the input switch
3. Check the fuse F1, F2, Auto
(depending upon input board
installed
1. Connect correct input voltage
2. Replace if necessary
3. Replace necessary fuse(s) if
they fail again perform the
Input Board Test
The machine has only the fan run-
ning, no display
1. Check the auxiliary voltages on
the JP1 to the input board
1. Perform the Input Board Test
2. Replace the display board, if the
auxiliary voltages are present
The machine powers up correctly
but there is no output
1. Check the output LED
2. Check the torch trigger
3. Check the welding cable
1. If the output LED is on perform
the IGBT Inverter Board Test
2. The control board may be faulty