Main Igbt Board Removal & Replacement | Lincoln Electric V205-T

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F-54

MAIN IGBT BOARD REMOVAL & REPLACEMENT (continued)

1.	Remove input power to the V205-T.			6. Using a 7mm nut driver, label and disconnect
1.	Remove input power to the V205-T.			leads RV1, RV2, RV3, RV4, RV5, RV6 & RV7.
				leads RV1, RV2, RV3, RV4, RV5, RV6 & RV7.
2.	Using a phillips head screwdriver remove the			See Figure F.28.
2.	Using a phillips head screwdriver remove the
	case wraparound cover.			7. Using a phillips head screwdriver, remove the
				7. Using a phillips head screwdriver, remove the
3.	Perform the Input	Filter	Capacitor	thirty-two (32) phillips head screws from the
3.	Perform the Input	Filter	Capacitor	main board. Note washer positions for
	Discharge Procedure detailed earlier in this			main board. Note washer positions for
	Discharge Procedure detailed earlier in this			replacement. See Figure F.28.
	section.			replacement. See Figure F.28.
	section.
4.	Locate the main IGBT board.		See Figure	8. Carefully maneuver the main board out of the
4.	Locate the main IGBT board.		See Figure	machine. Replace.
	F.27.			machine. Replace.
	F.27.
5.	VERY CAREFULLY, label	and	disconnect	9. Maneuver new board into its proper location
5.	VERY CAREFULLY, label	and	disconnect	and secure to machine using the thirty-two
				and secure to machine using the thirty-two

	plugs CN1, CN2, CN3, CN4 & CN5. See	phillips head screws previously removed.
	Figure F.28.	phillips head screws previously removed.
	Figure F.28.

NOTE: All ribbon cable connections are secured by a small amount of RTV on the outside surface to keep the connections secure.