Lincoln Electric SVM104-A service manual Internal Trigger, Safety Circuit Test

		TROUBLESHOOTING & REPAIR		F-18
TOC	TOC	TORCH, TORCH CABLE ASSEMBLY, INTERNAL TRIGGER,
		AND SAFETY CIRCUIT TEST
to Section	to Master
		c. If any of the above tests do not	d. Go to INTERNAL	TRIGGER
Return	Return	agree with the expected normal	AND SAFETY CIRCUIT TEST if
		resistance specifications, then	all resistance values are within
		the torch and/or cable must be	the specified range.
		repaired or replaced.

TOC	TOC			CONDUCTOR IN GAS TUBE
			ELECTRODE
Section	Master
							N.C.	CONE
								SWITCH
							THERMOSTAT
				#336		RED		SAFETY WIRE
to	to		6J5		Pin #1
Return	Return			#2		BLUE	GUN TRIGGER
			3J5		Pin #2
				#4		PURPLE
			4J5		Pin #4
		C1							ELECTRODE
			5J5
	VAC	24 VAC	7J5
				#337		WHITE			NOZZLE
	24	#335	8J5		Pin #3
		#3L	3J10
			6J10		PILOT		TORCH HEAD
Section TOC
	Master TOC		FIGURE F.5-Torch and Cable Wiring Diagram
to	to
Return	Return		INTERNAL TRIGGER AND			4.	Perform	the	CAPACITOR
			SAFETY CIRCUIT TEST				DISCHARGE PROCEDURE.
			PROCEDURE

		1. Turn the PRO-CUT 60 ON/OFF			5.	Disconnect		the	4-pin
						connector.
			Power Switch to OFF.
		2.	Disconnect input power	supply	6. Locate Plug J5 on the Control
						Board.	See	Figure	F.6 and
TOC	TOC		to machine.
						Figure F.1 for the location of the
Section	Master		using a 5/16” nut driver.		7.	Control Board and Plug J5.
						Locate	the	4-pin	recepta-
		3. Remove the roof and the Right
			and Left Case Side Assemblies
to	to					cle. See Figure F.6 for location.
Return	Return

PRO-CUT 60