Lincoln Electric RED-D-ARC IM648-B Operator's Manual page 25

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Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
No Status indicators light and the fan
does not operate 5 seconds after the
power switch is turned on.
No Status indicators light 5 seconds
after the power switch is turned on,
but the fan operates.
All Status indicators remain lit imme-
diately after power up.
All Status indicators begin to blink
within 5 seconds after power up.
(Overvoltage Protection has been
activitated)
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
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
1. Check the input power to be sure
it is on.
2. Check the power line fuses and
machine connection.
3. Disconnect input power at fuse
panel and check line switch conti-
nuity. Replace line switch if bad.
4. Auxiliary transformer may be
faulty.
1. Auxiliary transformer may be
faulty.
2. Disconnect input power from the
machine. Check that connectors
on harness between Control Bd.
and Display Bd. are properly seat-
ed.
3. Possible faulty Control Board.
1. The microprocessor has experi-
enced a memory fault. Consult
local Lincoln Field Service shop.
1. Turn power off. Make sure recon-
nect is positioned correctly for the
input voltage used. Wait at least 1
minute after power down before
re-connecting the machine.
Reconnect machine,then restore
power to PYTHON.
2. Possible faulty Primary board.
3. Possible faulty Control board.
CAUTION
PYTHON
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.
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