Lincoln Electric IDEALARC CV-300 Service Manual page 47

F-8
TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
The output voltage cannot be pre-
set.
The weld output terminals are
always electrically "hot".
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
FUNCTION PROBLEMS
1. Place the remote switch in
machine control.
operation is restored then the
remote control unit may be
faulty. Check or replace.
2. If an error message is displayed
Explanation
see
Messages.
1. Remove any control cable that
may be connected to the 14 pin
amphenol.
resolved the fault is in the con-
trol cable or the wire feeder.
2. If some open circuit voltage is
present (over 3 VDC.) after per-
forming Step #1 then the prob-
lem is within
Contact your local Lincoln
Authorized
Facility.
CAUTION
IDEALARC CV-300
1. Check the output control (R2)
and associated circuitry.
If normal
2. The meter board may be faulty.
Replace.
3. The control Board may be
of Error faulty. Replace.
1. Check for an internal short
between leads #2 and #4. See
wiring diagram.
If the problem is
2. Perform the Output Rectifier
Bridge Test.
3. The snubber board may be
faulty. Replace.
the CV300.
Field Service
RECOMMENDED
COURSE OF ACTION
F-8