Troubleshooting And Repair; How To Use Troubleshooting Guide - Lincoln Electric INVERTEC V145-S Service Manual

HOW TO USE TROUBLESHOOTING GUIDE

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 and 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.
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This Troubleshooting Guide is provided to help
you locate and repair possible machine
malfunctions. Simply follow the three-step
procedure listed below.
Step 1. LOCATE PROBLEM (SYMPTOM).
Look under the column labeled "PROBLEMS".
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 LED Function
Problems.
Step 2. PERFORM EXTERNAL TESTS.
The second column, labeled "CHECKS", lists the
obvious external possibilities that may contribute to
the machine symptom. Perform these tests/checks
in the
order listed. In general, these tests can be
conducted without removing the case
wrap-around cover.
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 Wiring Diagrams Section Table of
Contents to locate the appropriate diagram.
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