Lincoln Electric SVM200-A service manual POWER-UP Problems

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F-5	TROUBLESHOOTING AND REPAIR			F-5
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS		POSSIBLE AREAS OF	RECOMMENDED
(SYMPTOMS)		MISADJUSTMENT(S)	COURSE OF ACTION
(Continued)		POWER-UP PROBLEMS	If the correct input voltage is
			being applied to the CPU and
			the VRTEXTM 360 does not
			power-up the CPU may be
The VRTEXTM	360 does not	Make certain the correct input	faulty.
			With the ON Switch activated
power up when the ON Switch is		voltage is being applied to the	5VDC should be present at the
pushed. The green indicator light		VRTEXTM 360. (115-230VAC	Input Relay Coil.	Terminal A1
does come on but does NOT stay		single phase).	(Red Lead) to Terminal A2
on when the ON Switch is			(Black Lead). See the wiring
released.			diagram. If the green indicator
			light is on the 5VDC should be
			present at the relay coil.
			Check for loose or faulty
			connections between the Input
			Relay, the Upper Terminal
			Block and the ON Switch.
			Check leads 101A and 103A.
			See the wiring diagram.
			If the 5VDC is being applied to
			the Input Relay Coil and the
			above mentioned connections
			and leads are OK the Input
			Relay Coil may be faulty.
			Replace.
			If the 5VDC is not present at
			Terminals A1 to A2 check for
			loose or faulty	connections
			between the Input Relay Coil
			and the CPU USB port. See
			the wiring diagram.
			The CPU may be faulty.

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CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3878.

VRTEX TM 360