Lincoln Electric V205-T Table F.14 LED Functions, Table F.15 Feedback Voltage Signals

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F-45 F-45

TROUBLESHOOTING AND REPAIR

MAIN INVERTER BOARD

“WELDING LOGIC AND INVERTER” SECTION TEST (continued)

TABLE F.14 LED FUNCTIONS

Machine/Mode Component Value Condition Note

ON/STICK		L8				-------			ON		POT SIGNAL
ON		L9				-------		OFF			THERMAL
ON	TP31-TP9				2.56 VDC			-------			ALWAYS
			TABLE F.15 FEEDBACK VOLTAGE SIGNALS
	Machine/Mode			Component				Value			Condition
	ON/TIG			TP15-TP14			-2 VDC @ 100A			WELDING ON:
							-4 VDC @ 200A				CURRENT
											FEEDBACK
	ON/STICK			TP16-TP14			4.3 VDC O.C.V.			WELDING ON:
											VOLTAGE
											FEEDBACK
	ON/TIG			TP19-TP14			2 VDC @ 100A			WELDING ON:
							4 VDC @ 200A				CURRENT
										REFERENCE
	TABLE F.16 VOLTAGE CHECKS WITH 115 VAC APPLIED TO MACHINE
	Generator/Mode			Component				G[+],S[-]			D[+],S[-]
	ON/STICK				MF11			3.75 VDC			178 VDC
	ON/STICK				MF12			3.75 VDC			260 VDC
	ON/STICK				MF15			3.75 VDC			260 VDC
	ON/STICK				MF16			3.75 VDC			34 VDC

TABLE F.17 LED (CHECK IN STICK MODE)

Generator/Mode	Component	Value
ON/STICK	L11	ON
ON/STICK	L12	ON
ON/STICK	L13	ON
ON/STICK	L14	ON

V205-T AC/DC