Troubleshooting And Repair - Lincoln Electric INVERTEC SVM161-A Service Manual

F-4
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Major physical or electrical damage
is evident when the sheet metal
cover(s) are removed.
The machine is dead—no fan –no
output—no LEDs.
The main input fuses or breakers
repeatedly fail.
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.

TROUBLESHOOTING AND REPAIR

POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Contact your local authorized
Lincoln Electric Field Service
Facility for assistance.
1. Make sure the input power switch
is in the ON position.
2. Check the main input fuses. If
open replace.
3. Make sure the correct input volt-
age is applied to the machine.
1. Make certain the fuses or break-
ers are properly sized for the
input draw of the machine.
2. The welding procedure may be
drawing too much input current or
the duty cycle may be too high.
Reduce the welding current
and/or reduce the duty cycle.
CAUTION
INVERTEC® V205-T AC/DC™
RECOMMENDED
COURSE OF ACTION
1. Contact the Lincoln Electric
Service Department 1-800-833-
9353.
1. Check the input power switch for
proper operation. Also check the
associated leads for loose or
faulty connections. See Wiring
Diagram.
2. Perform the Input Filter Board
Test.
1. The Input Filter Board may be
faulty. Perform the Input Filter
Board Test.
2. The Main IGBT Inverter Board
may be faulty. Perform the Main
IGBT Inverter Board
Voltage Supply Test.
F-4
Low