Lincoln Electric INVERTEC V350-PRO Service Manual page 58

F-8
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The display is not functioning prop-
erly.
A fault or error code is displayed.
For no apparent reason the welding
characteristics have change.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed.
Call 1-800-833-9353(WELD).
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
FUNCTION PROBLEMS
1. Refer to the Operation Section
of this manual for normal opera-
tion characteristics.
2. Check for proper current and
voltage calibration.
1. See the
Explanations.
1. Check the welding cables for
loose or faulty connection.
2. Make sure the machine's mode
and output are set correctly for
the process being used. (CV,
CC,TIG etc.)
3. If Mig welding make sure the
shielding gas and wire speed are
correct for
used.
4. Check for proper current and
voltage calibration.
CAUTION
V350-PRO
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. Check for loose or faulty plug
connections
Display board and the control
board. See the wiring diagram.
2. The display board may be faulty.
3. The control board may be faulty.
Fault Code 1. See Fault Code Explanations.
1. Perform
Current
Procedure.
2. Perform
Transducer Test.
3. Perform the Output Diode
Module Test
the process being 4. The control board may be faulty.
5. The advanced process panel (If
used) may be faulty.
F-8
between the
the Voltage and
Calibration
the Current