2. Damaged display p.c. board.
3. Damaged control p.c. board.
Displays & LEDʼs on keypad are off. 1. Damaged control p.c. board. The green or red LED on the control
p.c. board is blinking at a very fast or erratic rate.
CAUTION
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.
LN-10
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.
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.
1. The display is in a mode that can only use one encoder.
One of the knobs changes the dis- play, but the other doesnʼt.

E-6

TROUBLESHOOTING

E-6

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

PROBLEMS

POSSIBLE

RECOMMENDED

 

(SYMPTOMS)

CAUSE

COURSE OF ACTION

 

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.

Neither knob changes the display.

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.

 

 

 

 

If all recommended possible areas

 

 

 

Displays & LEDʼs on keypad are off.

1.

Power source is off.

of misadjustment have been

The green and red LEDʼs on the

 

 

checked and the problem persists,

control p.c. board are off.

2.

Power source supply is not sup-

Contact your local Lincoln

 

 

plying 42 VAC to the wire feeder

Authorized Field Service Facility.

 

 

control box.

 

Page 37
Image 37
Lincoln Electric LN-10 manual Problems Possible Recommended