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F-2
Service and repair should be performed by only Lincoln Electric Factory Trained Personnel. Unauthorized
repairs performed on this equipment may result in danger to the technician or machine operator and will
invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes
and precautions detailed throughout this manual.
This Troubleshooting Guide is provided to help
you locate and
repair
malfunctions. Simply
procedure listed below.
Step 1. LOCATE PROBLEM (SYMPTOM).
Look under the column labeled
(SYMPTOMS)". This column describes possible
symptoms that the machine may exhibit. Find the
listing that best describes the symptom that the
machine is exhibiting. Symptoms are grouped
into three main categories: Output Problems.
Function Problems, and Welding Problems.
Step 2.
PERFORM EXTERNAL TESTS.
The second column, labeled "POSSIBLE AREAS
OF
MISADJUSTMENT(S)",
external possibilities that may contribute to the
machine symptom. Perform hese tests/checks in
the order listed. In general, these tests can be
conducted without removing the case wrap-
around cover.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs
safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you
proceed. Call 86-21-6673-4530.
Troubleshooting and Repair
HOW TO USE TROUBLESHOOTING GUIDE
WARNING
possible machine
follow
the
three-step
"PROBLEM
lists
the
obvious
CAUTION
INVERTEC
Step 3.
PERFORM COMPONENT TESTS.
The last column, labeled "Recommended Course
of Action" lists the most likely components that
may have failed in your machine. It also specifies
the appropriate test procedure to verify that the
subject component is either good or bad. If there
are a number of possible components, check the
components in the order listed to eliminate one
possibility at a time until you locate the cause of
your problem.
All of the referenced test procedures referred to in
the Troubleshooting Guide are described in detail
at the end of this chapter. Refer to the
Troubleshooting and Repair Table of Contents to
locate each specific Test Procedure. All of the
referred to test points, components, terminal
strips, etc., can be found on the referenced
electrical wiring diagrams and schematics. Refer
to the Electrical Diagrams Section Table of
Contents to locate the appropriate diagram.
TM
CV350-R
F-2
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Chapters
Table of Contents
Troubleshooting
