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TROUBLESHOOTING & REPAIR
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely,
contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-800-833-9353.
WELDING PROBLEMS
CAUTION
Observe Safety Guidelines
detailed in the beginning of this manual.
TROUBLESHOOTING GUIDE
FAULT CODES
DESCRIPTION /
DEFINITION
CORRECTIVE
ACTION
SERVICE FACILITY
CORRECTIVE ACTION
39
Glitch on the primary over
current fault interrupt;
possibly caused by noise
or a signal level.
Check the machine
ground. Check for cuts
or marks on input cord.
Check input cord for cuts
or marks. Check input
cord connections at
reconnect panel.
44 Main CPU problem. The
DSP has detected a prob-
lem with the CPU.
Check the machine
ground. Check for cuts
or marks on input cord.
Check input cord for cuts
or marks. Check input
cord connections at
reconnect panel. If still
bad replace Control PCB.
47 Glitch on the CAP/heart
beat interrupt; possibly
caused by noise or a sig-
nal level right at the trip
threshold.
Turn machine off and let
sit for 60 second and then
turn back on .
Run Scrolling dash Test.
If still bad replace Control
PCB.
81 Motor overload-average
motor current exceeded
8.00 amps for more than
0.50 seconds.
Verify motor armature is
not binding. Verify wire
spool is not binding.
Check current at drive
motor exceeds 8 amps
change drive motor. If
under 8 amps for 0.50
seconds change Feeder
Board.
82 Motor over current-aver-
age motor current
exceeded 3.50 amps for
more than 10.0 seconds.
Verify motor armature is
not binding. Verify wire
spool is not binding.
Check current at drive
motor exceeds 3.50amps
for 10.0 seconds change
drive motor.
7135 MSP can’t be found. Turn the machine off and
back on to reset the
machine.
Check for bad connec-
tions at MSP panel.
The MSP panel may be
faulty. Replace.
7138 Display Board can’t be
found.
Turn the machine off and
back on to reset the
machine.
Check for bad connec-
tions at Display Board.
The Display Board may
be faulty. Replace.
--------- Scrolling dashes Perform Clear all test. Perform Clear all test.
214 Feed Head Board can’t
be found.
Turn the machine off and
back on to reset the
machine. If condition per-
sists, contact and autho-
rized Lincoln Field
Service Facility.
Using machine schematic
Check LED 8 on Control
Bd. If not on, check for
+5VDC at leads 1103 &
1104. If LED 8 is on
check for 42VDC at Feed
Head Bd. If there, Feed
Head Bd. may be faulty.