If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed.
Call 1-800-833-9353(WELD).

PROBLEMS
(SYMPTOMS)

POSSIBLE AREAS OF
MISADJUSTMENT(S)

RECOMMENDED
COURSE OF ACTION

FUNCTION PROBLEMS

The machine’s welding output is
very high and uncontrollable.

1. Put the Control Select in the

Local position. If the problem is
solved the remote control
device or associated circuitry
may be faulty.

2. Check for proper current and

voltage calibration.

1. Perform

the

Current

Transducer Test.

2. If the output is normal when

the Control Select is in the Local
position but the output is very
high in the Remote position the
remote board may be faulty.
Perform The SPI Cable
Resistance and Voltage Test.

3. The control board may be faulty.

The Weld Mode Select does not
function properly.

1. Refer to Operation Section of

this manual for normal operation
characteristics.

NOTE: The mode panel is not pre-

sent if the advanced
process panel is installed.

1. Check for loose or faulty plug

connections between the con-
trol board and the mode select
panel. See the wiring diagram.

2. Perform the SPI Cable

Resistance and Voltage Test.

3. The Mode Select Panel board

may be faulty.

4. The control board may be faulty.

The output control and/or Weld
Terminals Select functions do not
operate properly.

1. Refer to Operation Section of

this manual for normal operation
characteristics.

2. Check for proper current and

voltage calibration.

1. Check for loose or faulty plug

connections between the
remote board and the weld/out-
put controls. See the wiring dia-
gram.

2. The Remote Board may be

faulty.

3. The control board may be faulty.

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