Lincoln Electric SVM175-A service manual Ohmmeter Reading, Table F.2 Diode Test Table

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F-67					TROUBLESHOOTING & REPAIR				F-67
				CHOPPER MODULE RESISTANCE TEST (continued)
						TABLE F.2 – DIODE TEST TABLE		OHMMETER
						OHMMETER
								READING
								Diode Bias
					(+) Lead		(-) Lead
								and Expected
								Test Result
					B5		B6	6K to 9K
		Chopper			B6		B5	6K to 9K
					B4		B5	200k or higher
		Terminal			B5		B4	400k or higher
					B6		B4	400k or higher
					B4		B6	200k or higher
		Connections			B2		B3	6K to 9K
					B3		B2	6K to 9K
					B4		B2	200k or higher
					B2		B4	400k or higher
					B4		B3	200k or higher
5.		Reconnect	all leads.		B3		B4	400k or higher
	6. The chopper module screw connection should be lightened to 50-60 inch-pounds.
	7. Perform the Case Cover Replacement procedure.
							RANGER 305D