Troubleshooting & repair, Control board test – Lincoln Electric IDEALARC DC 1000 SVM123-A User Manual
Page 67
F-27
TROUBLESHOOTING & REPAIR
F-27
POSSIBLE PROBLEMS
PERTAINING TO THE
CONTROL BOARD
IF LED 1 does not light, when the
start switch is ON.
1.
Check for 115 VAC at leads #255
to #256 plug J1
a.
If the correct voltage is not
present, check leads #255
and #256 and associated
wiring for loose or faulty
connections. See wiring dia-
gram and Figure F.10.
b.
Remove main supply power
to the DC-1000. Test for
continuity (zero ohms) from
lead #255 plug J1 at the
Control Board to lead #212
at the Start/Stop Button.
c.
Test for continuity (zero
ohms) from lead #256 plug
J1 at the Control Board to
the pilot light. See wiring dia-
gram.
d.
If the 115 VAC is present at
leads #255 to #256 at plug
J1 and LED 1 does not light,
the Control Board may be
faulty. Replace.
CONTROL BOARD TEST
IDEALARC DC-1000
FIGURE F.10 - LED 1 Test Points