Lincoln Electric LN-10 HEADS & CONTROLS IM587-B Operator's Manual page 42

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PROBLEMS
(SYMPTOMS)
One of the knobs changes the dis-
play, but the other doesnʼt.
Neither knob changes the display.
Displays & LEDʼs on keypad are off.
The green and red LEDʼs on the
control p.c. board are off.
Displays & LEDʼs on keypad are off.
The green and red LEDʼs on the con-
trol p.c. board are both blinking at
about one second intervals.
Displays & LEDʼs on keypad are off.
The green or red LED on the control
p.c. board is blinking at a very fast
or erratic rate.
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 throughout this manual
POSSIBLE
1. The display is in a mode that can
only use one encoder.
2. The connector from the control
p.c. board to the encoder p.c.
boards may be loose or improper-
ly inserted.
3. Damaged encoder p.c. board.
4. Damaged control p.c. board.
1. The connector from the control
p.c. board to the encoder p.c.
boards may be loose or improper-
ly inserted.
2. Damaged control p.c. board.
3. Damaged encoder p.c. boards.
1. Power source is off.
2. Power source supply is not sup-
plying 42 VAC to the wire feeder
control box.
3. Damaged input power wiring in
the LN-10 control box.
4. Damaged control p.c. board.
1. The connectors from the control
p.c. board to the display p.c.
board are loose or improperly
inserted.
2. Damaged display p.c. board.
3. Damaged control p.c. board.
1. Damaged control p.c. board.
CAUSE
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
CAUTION
LN-10
RECOMMENDED
COURSE OF ACTION
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