Lincoln Electric SVM170-A service manual PC Board Assembly Control G4824-2D1

		G-8	ELECTRICAL DIAGRAMS							G-8
to Section TOC	to Master TOC	PC BOARD ASSEMBLY - CONTROL - (G4824-2D1)
Return	Return						R2, R30, R42, R45, R70,
							R90, R103, R148, R182,			RESISTOR,MF,1/4W,4.75K,1%
							R188
			ITEM (USED WITH)*	QTY	PART NUMBER DESCRIPTION		R13, R22, R93, R94, R132	5	S19400-6810	RESISTOR,MF,1/4W,681,1%
							R14, R15, R27, R123	4	S19400-15R0	RESISTOR,MF,1/4W,15.0,1%
			1	1	G4824-D	PC BOARD BLANK
							R18, R20, R24, R80	4	S19400-5620	RESISTOR,MF,1/4W,562,1%
			2 (Q4)*	1	CF000003	6-32 X .375 ROUND HEAD MACHINE SCREW
							R19, R21, R58, R83, R144,
			3 (Q4)*	1	E106A-13	# 6 LOCK WASHER				RESISTOR,MF,1/4W,2.21K,1%
							R178, R179, R180
			4 (Q4)*	AS REQ	E1868	THERMO JOINT COMPOUND
							R25, R26, R49, R50	4	S25365-51R0	RESISTOR,STAND-UP,WW,5W,51.0,5%
			5 (X1)*	AS REQ	E2861	RTV SEALANT
							R28, R61, R142, R143,
			6 (Q4)*	1	S18104-1	HEAT SINK,ALUMINUM,EXTRUDED,FOR 1 TO-220				RESISTOR,MF,1/4W,6.81K,1%
							R147, R191
			7 (X1)*	1	S20209-52	SOCKET,IC,PLCC,52-PIN
							R29, R100, R110	3	S19400-1501	RESISTOR,MF,1/4W,1.50K,1%
			8 (Q4)*	1	T13746	6-32 HEX NUT
							R31, R106, R150, R193	4	S19400-5621	RESISTOR,MF,1/4W,5.62K,1%
			REFER TO ELECTRONIC COMPONENT DATABASE FOR SPECIFICATIONS ON ITEMS LISTED BELOW				R32	1	S19400-2672	RESISTOR,MF,1/4W,26.7K,1%
							R33, R38, R79, R149	4	S19400-2212	RESISTOR,MF,1/4W,22.1K,1%
			REFERENCES	QTY	PART NUMBER DESCRIPTION		R34, R40	2	S19400-33R2	RESISTOR,MF,1/4W,33.2,1%
			C3, C4, C9, C65	4	S13490-42	CAPACITOR,TAEL,1.0,35V,10%	R35, R51, R181	3	S19400-1502	RESISTOR,MF,1/4W,15.0K,1%
			C5, C6, C18, C19, C35,			CAPACITOR,CD,.0047/.005,1400V,20%	R36	1	S19400-2671	RESISTOR,MF,1/4W,2.67K,1%
			C51, C54				R37, R59, R66, R69, R73,
										RESISTOR,MF,1/4W,44.2K,1%
TOC			C7, C66	2	S13490-181	CAPACITOR,ALEL,22,63V,20%	R74, R86, R87
	TOC
			C8, C14, C20, C29, C36,				R39, R68, R71, R72, R91,			RESISTOR,MF,1/4W,3.32K,1%
			C37, C38, C39, C43, C48,				R92, R111
						CAPACITOR,CEMO,.022,50V,20%
			C49, C52, C53, C55, C56,
							R41, R65, R75, R84, R112,
Section	Master		C62, C63, C64				R113, R133, R134, R137,			RESISTOR,MF,1/4W,10.0K,1%
			C10, C17, C22, C23, C24,
							R138, R139, R140, R141
			C25, C26, C30, C31, C32,
			C33, C34, C40, C41, C46,			CAPACITOR,CEMO,0.1, 50V,10%	R43, R183	2	S19400-1004	RESISTOR,MF,1/4W,1.00M,1%
			C57, C58, C60, C61, C71,				R44, R47, R109, R145,			RESISTOR,MF,1/4W,1.00K,1%
			C72, C73				R146
			a	2	S16668-1	CAPACITOR,CEMO,22pF, 100V,5%	R48	1	S19400-2801	RESISTOR,MF,1/4W,2.80K,1%
to	to
			C15	1	S16668-8	CAPACITOR,CEMO,330pF,100V,5%	R52, R98	2	S19400-3011	RESISTOR,MF,1/4W,3.01K,1%
			C16	1	S13490-179	CAPACITOR,ALEL,1000,35V,20%	R53	1	S19400-5111	RESISTOR,MF,1/4W,5.11K,1%
Return	Return
			C27	1	S13490-182	CAPACITOR,ALEL,3300,63V,20%	R54	1	S25365-00R1	RESISTOR,STAND-UP,WW,5W,0.1,5%
			C28	1	S13490-197	CAPACITOR,ALEL,82,35V,20%,LOW-ESR	R55, R56	2	S19400-26R7	RESISTOR,MF,1/4W,26.7,1%
			C47	1	S16668-6	CAPACITOR,CEMO,4700pF,50V,10%	R57	1	S19400-2430	RESISTOR,MF,1/4W,243,1%
			C67, C68	2	S20500-2	CAPACITOR,PPMF,0.47,630V,10%,BOX	R60	1	S19400-2432	RESISTOR,MF,1/4W,24.3K,1%
			C69, C70	2	T11577-46K	CAPACITOR,CD,.05,600V,+80/-20%	R62, R63, R76, R77, R78,
			D8, D9, D10, D11, D12,				R82, R95, R105, R124,			RESISTOR,MF,1/4W,100,1%
			D13, D14, D16, D19, D20,				R125, R126, R127, R128,
			D21, D22, D24, D25, D29,				R129, R130, R131
			D33, D34, D35, D36, D38,			DIODE,AXLDS,1A,400V	R64, R67	2	S19400-5110	RESISTOR,MF,1/4W,511,1%
			D39, D41, D46, D47, D48,				R88, R89	2	S19400-1622	RESISTOR,MF,1/4W,16.2K,1%
			D49, D50, D55, D56, D57,				R99	1	S19400-1652	RESISTOR,MF,1/4W,16.5K,1%
			D58, D59				R101, R102	2	S19400-1372	RESISTOR,MF,1/4W,13.7K,1%
			D23, D37	2	T12705-23	DIODE,SCHOTTKY,AXLDS,1A,30V,1N5818	R104, R152	2	S19400-7500	RESISTOR,MF,1/4W,750,1%
			DZ2, DZ3, DZ4, DZ5, DZ6	5	T12702-45	ZENER DIODE,1W,18V,5%,1N4746A	R107, R151	2	S19400-4750	RESISTOR,MF,1/4W,475,1%
			DZ7, DZ8	2	T12702-52	ZENER DIODE,1W,5.1V,5%,1N4733A	R108	1	S19400-2670	RESISTOR,MF,1/4W,267,1%
			DZ9, DZ10, DZ11, DZ12,			ZENER DIODE,1W,6.2V,5%,1N4735A	R116	1	S19400-2802	RESISTOR,MF,1/4W,28.0K,1%
			DZ13, DZ14				R135, R136, R187	3	S19400-4752	RESISTOR,MF,1/4W,47.5K ,1%
			J1	1	S18248-8	CONNECTOR,MOLEX,MINI,PCB,8-PIN	R153, R154, R155	3	S18380-14	THERMISTOR,PTC,500OHMS,28mA
			J2	1	S18248-14	CONNECTOR,MOLEX,MINI,PCB,14-PIN	R156, R157	2	S19400-3320	RESISTOR,MF,1/4W,332,1%
TOC			J3	1	S18248-12	CONNECTOR,MOLEX,MINI,PCB,12-PIN	R158, R159	2	S19400-2210	RESISTOR,MF,1/4W,221,1%
	TOC		J4	1	S24020-10	CONNECTOR,MOLEX,MINI,PCB,10-PIN,TIN	R160, R161, R162, R163,			RESISTOR,MF,1/4W,2.00K,1%
			J5	1	S18248-16	CONNECTOR,MOLEX,MINI,PCB,16-PIN	R184, R185, R186, R190
			J6	1	S18248-6	CONNECTOR,MOLEX,MINI,PCB,6-PIN	R164	1	S18380-5	THERMISTOR,PTC,0.5-1.17 OHMS,0.5A
			J8	1	S18248-4	CONNECTOR,MOLEX,MINI,PCB,4-PIN	R167, R168	2	S25365-10R0	RESISTOR,STAND-UP,WW,5W,10.0,5%
Section	Master
			L3, L4	2	T12218-7	CHOKE,330UH,10%,110MA, MOLDED	R169, R170, R171, R172,			RESISTOR,MF,1/4W,100K,1%
			OCI1, OCI2	2	S15000-30	OPTOCOUPLER,TRIAC,DRV,RANDOM,800V	R173, R174, R175
			OCI3	1	S15000-31	OPTOCOUPLER,TRIAC,DRV,RANDOM,800V	R176, R177	2	S19400-2000	RESISTOR,MF,1/4W,200,1%
			Q1, Q2, Q3, Q6, Q11, Q12,			TRANSISTOR,NPN,TO226,0.5A,40V,2N4401	R192	1	S19400-3322	RESISTOR,MF,1/4W,33.2K,1%
			Q13, Q14				TP1, TP2	2	T13640-15K	MOV,50VRMS,15J,14MM
			Q4	1	T12704-41	TRANSISTOR,N,TO220,8A,150V,MJE15030	TP3, TP4	2	T13640-9K	MOV,75VRMS,22J,14MM
to	to
			Q5, Q9, Q15, Q16	4	T12704-35	TRANSISTOR,NPN,TO226,0.5A, 300V,MPS-A42	TP7, TP8, TP9	3	T13640-18	MOV,320VRMS,150J,20MM
			Q7, Q10, Q18, Q19	4	T12704-88	TRANSISTOR,NMF,TO220,45A,100V(SS)	TRI1	1	S15161-27	TRIAC,TO220,8A,800V
Return	Return
			Q8, Q17	2	T12704-69	TRANSISTOR,PNP,TO226,0.5A, 40V,2N4403	X1	1	M15101-10	IC,CMOS,MCU,ONE-TIME-PROM,PLCC,68HC711E9C
			Q20, Q21	2	T12704-109	TRANSISTOR,NMF,IPAK,TO-251,10A,100V(SS)	X2	1	M15102-3	IC,CMOS,UNDERVOLT-SENSING,RESET,MCU(SS)
							X3	1	S17900-8	IC,CMOS,INVERTER,SCHMITT,HEX,HC14A(SS)
							X4, X5	2	S15128-11	IC,COMPARATOR,QUAD,2901N
							X6	1	S15128-16	IC,OP-AMP,QUAD,HIGH-PERF,1014
							X8, X14	2	S15018-4	IC,CMOS,INVERTER,SCHMITT, HEX,4584(SS)
							X9, X13	2	S15018-6	IC,CMOS,SWITCH,ANALOG,QUAD, 4066(SS)
							X10, X11	2	S15128-10	VOLTAGE REF,ADJ, PRECISION,431I
							X12	1	S15128-5	IC,VOLT REG,FIXED,3-T,(+),1A,5V,TO220
							X15	1	S15128-4	OP-AMP,QUAD, GEN-PURPOSE,224N
							Y1	1	S16665-11	CRYSTAL,QUARTZ,8.000MHZ,ATS-49
Return to Section TOC	Return to Master TOC	NOTE:	Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro-
			vided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the
			machine.							POWER MIG 255C