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F-8
TROUBLESHOOTING & REPAIR
F-8
IDEALARC DC-1000
Observe all Safety Guidelines detailed throughout this manual
OUTPUT PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
The machine does not have max-
imum weld output.
1. Check all three-phase input
lines at the DC-1000. Make
sure input voltages match
machine rating and reconnect
panel.
2. Put output control switch
(SW3) in “OUTPUT CON-
TROL AT DC-1000” position.
If problem is solved, then
check remote control unit or
wire feeder.
1. Check the output control
potentiometer (R1) and asso-
ciated circuitry for loose or
faulty connections. See wiring
diagram.
2. Perform
Control Board Test
.
3. Perform
Firing Board test
.
4. Perform
Main Transformer
Test
.
5. Perform
SCR Output Bridge
Test
.
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 216-383-2531 or 1-800-833-9353.
CAUTION