Lincoln Electric SVM153-A service manual Function Problems

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F-7			F-7
TROUBLESHOOTING & REPAIR
TROUBLESHOOTING GUIDE			Observe Safety Guidelines
		detailed in the beginning of this manual.
PROBLEMS	POSSIBLE AREAS OF		RECOMMENDED
(SYMPTOMS)	MISADJUSTMENT(S)		COURSE OF ACTION
		FUNCTION PROBLEMS
The machine control is still active	1.	This is normal in TIG mode.	1. Check Plug J10 on the Weld
when the remote control unit is	2. The remote control unit may be		Control PC board for loose or
attached.			faulty connections.
		defective.
	3.	Check the Amphenol connec-	2. The Weld Control PC board
			may be faulty.
		tions and associated wiring.
The machine seems locked into the	1. Check the position of the MODE		1. Check the MODE SELECTOR
CC mode of operation (Stick		SELECTOR switch. It must be	switch and associated leads.
mode).		in the correct position for the	See the Wiring Diagram.
		process being used.	2. The Weld Control PC board
	2. Check that the jumper plug J3 is		may be faulty.
		properly installed in the Weld
		Control PC board. (J3 has a
		jumper wire from pin 1 to pin 5.)

CAUTION

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.

COMMANDER 500