Lincoln Electric IDEALARC DC-1500 Service Manual page 42

F-8
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The machine does not have
maximum weld output.
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. Check all three-phase input
lines at the DC-1500. Make
sure input voltages match
machine rating and reconnect
panel.
2. Put output control switch
(SW4) in "OUTPUT CON-
TROL AT DC-1500" position.
If problem is solved, then
check remote control unit or
wire feeder.
CAUTION
IDEALARC® DC-1500
RECOMMENDED
COURSE OF ACTION
1. Check the output control
potentiometer (R1)
associated 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.
F-8
and