Lincoln Electric SVM170-A service manual Schematic Display PC Board L10951, Powermig

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G-9 ELECTRICAL DIAGRAMS G-9

SCHEMATIC - DISPLAY PC BOARD (L10951)

																																							LAST NO. USED	R- 14 X- 5	C- 10 LED- 3	LABELS D- 1 DISP- 7	SUPPLY VOLTAGE NET	POWER SUPPLY SOURCEPOINT	COMMON CONNECTION	FRAME CONNECTION	EARTH GROUNDCONNECTION				SCHEMATIC, DISPLAY PCB		L 10951
																			500																															POWERMIG 255		SHT. SUP’S’D’G.NO.
																																									CAPACITORS = MFD ( .022/50V UNLESS OTHERWISE SPECIFIED)
																16	BANK4	X3	a	7																						RESISTORS = Ohms (1/4W UNLESS OTHERWISE SPECIFIED)							EQUIP. TYPE		CLEVELAND, OHIO U.S.A.SUBJECT
																15				6								3	8
																	BANK3		b													3	8			3	8
																											1
																3	Vdd		c	5											1				1								DIODES = 1A, 400V (UNLESS OTHERWISE SPECIFIED)
																											2
																															2				2
																13	BANK2		d	4							4																										GT DATE 2/20/98 CHK.
																															4				4
																											5
																9	BANK1		e	2											5				5
																											6
																															6				6
																17	BANK5		h	19							7
																															7				7
																12	DATA IN		Vss	14							9	DISP3			9	DISP2			9	DISP1														THE LINCOLN ELECTRIC CO.
																											10																									NONE
																															10				10
																11	CLOCK		g	20
																																								ELECTRICAL SYMBOLS PER E1537
																10	/ENABLE		f	1																			GENERAL INFORMATION
																																																FILENAME: L10951-1AB
																18	DATA OUT		Rx	8
																	MC14489																																			SCALE
																				R11	1.50K																																DR.
																					500																										A COMMON CODE
		J10	LATCH					13		12	1			2																																DIAGRAM MAY
		4				R10			X5			X5
						475
								C9																																						WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS	NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING
								.0047																																					COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
								50V
								500
		J10	SCK																																														Ch’ge.Sht.No.	XA	3-12-99
		5						R9			11	X5		10
								475		C8											500
										.0047
										50V
											500							16	BANK4	X4	a	7
																		15				6								3	8
																			BANK3		b													3	8			3	8
																													1
																		3	Vdd		c	5											1				1
																													2
																																	2				2
		J10																13	BANK2		d	4							4										VOLTS
			MOSI								9			8																			4				4
		6						R8					X5					9	BANK1		e	2							5				5				5		LED3
																													6
								475										17	BANK5		h	19							7				6				6
										C7																							7				7
																						14							9	DISP7				DISP6				DISP5										NUMBER.
										.0047								12	DATA IN		Vss												9				9
				10K		10K		10K																					10
			R5		R6		R7			50V								10	/ENABLE		g	20											10				10
											500							11				1
																			CLOCK		f																							NOTES :	N.A. SINCE
																		18	DATA OUT		Rx	8
																			MC14489
				500
																						R12	1.50K
						R1
						221
						R2																	500
						221
						R13								+5VA
						221
						R3					D1
						221
						R4									Vdd	3		Vdd	3				14
						221
			J10																				X5
	515	7				R14					X1				X3		C10	X4			C3			C4	5	X5	6
										IN	7805			OUT							0.1
						221											0.1					HEXINV		0.1
																					50V
															MC14489		50V	MC14489						50V
										C1				C2
											GND
										4.7
														18	Vss			Vss
										35V						14			14
														15V									7
L			J10
10951
	500	8																							3	X5	4
																							500

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

POWER MIG 255C