Lincoln Electric CV-655 Operator's Manual page 26

E-5
PROBLEMS
(SYMPTOMS)
Machine will not weld. OCV is less
than 1 volt.
The wire feeder will not come on.
Poor starting.
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
Observe all Safety Guidelines detailed througout this manual
POSSIBLE
PROBLEMS
1. The machine may be in a over-
load condition. Remove the short
circuit or excessive load on the
output terminals.
2. See the PC board LED informa-
tion.
1. Either the 42VAC or the 115VAC
circuit breakers may be tripped.
Reset if necessary.
2. Check for the presence of the
required voltage to operate the
wire feeder.
3. The control cable or wire feeder
may be faulty.
1. The capacitor discharge resistor
(R2) may be faulty. See wiring
diagram.
2. The control board may be faulty.
See PC board LED information.
CAUSE
If all recommended possible areas
of misadjustments have been
checked and the problem persists,
contact
Authorized Field Service Facility.
CAUTION
CV-655
RECOMMENDED
COURSE OF ACTION
your local Lincoln
E-5