Lincoln Electric IM586-B manual Damaged encoder p.c. board

E-5	TROUBLESHOOTING	E-5
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Pressing the trigger key has no	1. The connector from the control
effect while not welding.		p.c. board to the display p.c.
		board or the connector from the
		display p.c. board to the keypad
		are loose or improperly inserted.
	2. Damaged keypad
	3.	Damaged display p.c. board.
	4.	Damaged control p.c. board.
Pressing the control key has no	1. Make sure that the DIP switches
effect while not welding.		on the control p.c. board are not
		set for security mode.
	2.	The connector from the control
		p.c. board to the display p.c.
		board or the connector from the
		display p.c. board to the keypad
		are loose or improperly inserted.
	3. Damaged keypad
	4.	Damaged display p.c. board.
	5.	Damaged control p.c. board.
One of the knobs changes the dis-	1. The display is in a mode that can
play, but the other doesnʼt.		only use one encoder.
	2.	The connector from the control	If all recommended possible areas
		p.c. board to the encoder p.c.	of misadjustment have been
		boards may be loose or improp-	checked and the problem persists,
		erly inserted.	Contact your local Lincoln
	3.	Damaged encoder p.c. board.	Authorized Field Service Facility.
	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 improp-
		erly inserted.
	2.	Damaged control p.c. board.
	3.	Damaged encoder p.c. boards.
Displays & LEDʼs on keypad are	1. Power source is off.
off. The green and red LEDʼs on the	2. Power source supply is not sup-
control p.c. board are off.		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.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

STT-10