Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B Service Manual page 74

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TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
Machine display reads "Error
Invalid Overlay," or it displays an
invalid ID number on power-up.
Machine displays "ERROR: S.L.
NOT INITIALIZED" on power-up.
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.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
FUNCTION PROBLEMS
1. Make certain the overlay is
installed properly.
2. Inspect the infrared sensors on
the front panel. If they are
dirty, blow them out with low
pressure air and clean with a
soft cloth.
3. Inspect for damage to the Bar
Code(s) (black squares) on the
back of the overlay. Also
check for dirt build-up on back
of overlay. Wipe off with a soft
rag.
1. Contact your local Lincoln
Authorized Field Service
Facility for technical assis-
tance.
CAUTION
POWER WAVE 450
Observe Safety Guidelines
detailed in the beginning of this manual.
RECOMMENDED
COURSE OF ACTION
1. Perform the Sensor
Calibration Test.
1. Perform the Serial Loop
Wiring Harness Test.
2. The control board may be
faulty. Replace and perform
voltage calibration and current
calibration.
3. The display board may be
faulty. Replace and perform
voltage calibration.
4. The power board may be
faulty. Replace.
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