Lincoln Electric SVM120-A service manual Charging Circuit Test

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F-12		F-12
	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
	ENGINE PROBLEMS
The engine will not go to high idle	1. Make sure the welding cables	1.	Check for broken or faulty con-
when attempting to weld or when	and auxiliary power lead con-		nections in the sensing leads
the auxiliary power is loaded.	nections are tight.		(#254, 254A and lead #3).
Welding output and auxiliary power	2. Automatic idler may not func-		Make sure lead	#3 is looped
output are normal when idler			through the current sensor on
	tion if the auxiliary power is
switch is in the “HIGH” position.			the control board.
	loaded to less than 150 watts.
	3. If using the 115/230 volt recep-	2.	The control board may be
			faulty. Replace.
	tacle for 115 volts, try using the
	“other side” of the receptacle.
	The internal load sensing is only
	on one side of the receptacle.
The engine will not crank or cranks	1. Check for loose or faulty battery	1. If the battery is replaced or tests
very slowly.	cable connections.		good, then the charging circuit
	2. The battery may be faulty.		may be faulty.	Perform the
			Charging Circuit Test.
		2. The starter motor or starter
			solenoid may be faulty.
		3. The engine may		be hard to
			crank due to a mechanical fail-
			ure in the engine.

CAUTION

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 216-383-2531 or 1-800-833-9353.

RANGER 10-LX