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Lincoln Electric SVM132-A service manual Control Board L5767 Layout

Models: SVM132-A

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G-7	ELECTRICAL DIAGRAMS	G-7
CONTROL BOARD (L5767) LAYOUT

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			S
	8 7 6 5 4 3 2 1	N
	8 7 6 5 4 3 2 1	O	F
			F
D6			L5767-1
D7	BAL CAL		CONTROL

ITEM	REQ’D.	PART No.		IDENTIFICATION

C1	1	S13490	-42	1.0/35
C2	1	S13490	-67	2/50
C3	1	S13490	-104	39uF/20V
C4	1	S13490	-25	4.7/35
C5	1	T11577	-26	.1/100
C6,C10,C11,C12,C13	5	S16668	-5	.022/50
C7,C8	2	S13490	-102	.047/100
C9	1	T11577	-52	.0047 or .005/1400

D1,D2,D8,D9,D10,D11,D12,D13,D14	9	T12199	-1	1N4004
D3,D4	2	T12199	-2	1N4007
DZ1	1	T12702	-4	IN4747
DZ2	1	T12702	-29	1N4744A

L1	1	T12218	-2	5.6mH
PT1	1	T12737	-2	1:1:1

Q1,Q3	2	T12704	-69	2N4403
Q2	1	T12704	-68	2N4401
QU1	1	T12707	-4	2N6027

R1	1	S19400	-6811
R2	1	T10812	-73	2K 1/2W
R3,R14,R16,R22	4	S19400	-1002
R5,R6	2	S19400	-4751
R7	1	S19400	-15R0
R8,R9	2	S19400	-3322
R10	1	S19400	-7500
R11	1	T10812	-39	50K 1/2W
R12	1	S19400	-2672

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		R13	1	S19400-3922
	8	R15	1	S19400-6812
	-	R17	1	S19400-2212
	LN	R17	1	S19400-2212
	LN	R18,R25	2	T14648-11	4700 5W
		R19	1	S19400-5622
		R20,R29	2	S19400-1502
		R21	1	S19400-1501
		R23	1	T14764-2	.25 7W
		R24,R26	2	T10812-68	1K 1/2W
		R27	1	S19400-1500
		R28,R31	2	S19400-5110
		R30	1	S19400-5232

		SCR1,SCR2	2	S15161-6	2N6397
		TP1	1	T13640-11	45J

	1-24-97B	CAPACITORS = MFD/VOLTS
	1-24-97B	RESISTORS	= OHMS/ 1/4W UNLESS OTHERWISE SPECIFIED
		RESISTORS	= OHMS/ 1/4W UNLESS OTHERWISE SPECIFIED
	L5767-1	INDUCTANCE = HENRYS
	L5767-1

	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 provided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result	LN-8
	in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.	LN-8

Image 97

Lincoln Electric SVM132-A service manual Control Board L5767 Layout

Contents

LN-8 Semiautomatic Wire Feeder LN-8 SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Installation LN-8 with K303 Electrode DiameterLN-8 with K377 LN-8 with K378Table A.1 Work Lead Specifications Power Source ConnectionsLN-8N and LN-8NE LN-8S and LN-8SE and Converted LN-8N and LN-8NE Power Source Selection Switch Variable Voltage PC BoardTable A.2 LN-8 Power Source Connection Diagrams Power Source Connection DiagramsSection TOC Installation TOC Figure A.5 Connection of LN-8 to R3S-250 and R3S-325 9A-9Figure A.6 Connection of LN-8 to DC-600 10A-10Power Source To LN-8 Input Cable Plug Control Cable LN-8 for Same Polarity Operation Shock Can Kill LN-8 for Opposite Polarity Operation14A-14 Figure A.10 for Power Sources Other than Lincoln ElectricInput Cable Connections Cable Clamp Conductor Electrode Wire Reel BasecontrolLN-8N and LN-8S LN-8NE and LN-8SEExtension Tube Connector Connections to Wire FeederLocking ScrewSELF-TAPPING Screw Hinge Handle Figure A.14 Wire Feeder Handle InstallationGUN and Cable Assemblies Handling ProceduresLN-8S and LN-8SE Continuous Flux Feed Submerged ARC GeneralOperation Controls and Their Functions Safety InstructionsConstant Current Controls Gouging SparksCurrent Controls Voltage Constant Voltage ControlsAvoiding Ground Lead Protector GLP Activation Circuit ProtectionFigure B.3 Wire Feed Rolls and Guide Tube Installation Wire Feed Rolls and Guide TubesSetting for CV or CC Power Sources Welding with a Constant Voltage Power SourceSlots Coil Reel Mounting a 50 or 60 lb CoilK363-P READI-REEL Adapter Wire Reel Loading K1524-1 Universal Wire Reel StandAdapter 12 in./300 mm Diameter or 14 lb 6 kg To Mount 10 to 44 lb 4.5 to 20 kg SpoolsInnershield Coils READI-REELS a K438 READI-REEL Adapter Must be UsedFeeding Electrode to the LN-8NE or LN-8SE with Extension Feeding Electrode to the LN-8N or LN-8SBrass Blocks Hand Crank ARM Slow Acceleration Starting Code 7926 and Above Flux Tank LoadingAccessories General Table C.1 LN-8 Wire Feeder AccessoriesK163 Undercarriage Requires K303, K377, or K378 K161 Mechanized Travel Power PackK178 Mounting Platform K58 Magnetic SeparatorReel Mounting Accessories Constant Current Conversion Parts Welding Guns Welding GUN AccessoriesLN-8 Table of Contents Maintenance Section MaintenanceRoutine Maintenance Periodic Maintenance Theory of Operation Table of Contents Theory of Operation SectionGeneral Description Power Input CircuitsFigure E.2 GUN Trigger and 1CR Contact Control Circuits GUN Trigger and 1CR Relay Contact Control CircuitsFuse Field 5E-5 SCR OperationApplied Later CYCLE, the SCR Output Is Decreased LN-8 Troubleshooting and Repair Return to Return to Section TOC HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Troubleshooting & RepairProblems Symptoms Troubleshooting GuideFunction Problems Transformer Test Perform the 1CR Relay Test Feeding Problems Welding Problems LN-8 Electrical Sequence of Operation Figure F.1 LN-8 Electrical Sequence of Operation Test Description Trigger Transformer TestTrigger Transformer Test Internal Voltage Test Receptacle ConnectorCircuit Applied Breaker Control BoardTable F.1 Voltage Test Points Internal Voltage Test1CR Relay Test 1CR Relay Test Table F.2 Relay Test Terminal Connections 1CR Relay TestDrive Motor Test Drive Motor Test 1CR Figure F.6 GUN Terminal Jumper LocationsTable F.3 Drive Motor Test Points To further check the drive motorPotentiometer Replacement Repair Procedure Circuit Breaker Replacement Retaining NUT Ground Lead Protector Switch Mount Flatwasher Lockwasher NUTGround Lead Protector Push Button Switch Replacement Ground Lead Protector Push Button Trigger Transformer Replacement Insulation Sheet Trigger Transformer NUT Relay PC Board Roundhead ScrewPC Board Replacement Control PC Board Variable Voltage PC Board Relay PC Board Figure F.10 PC Board LocationsRelay Board Removal Control PC Board Replacement Wire Drive Assembly and Component Replacement White BlackGreen Ground Yellow Blue TWO#568 #567 ShuntGearbox Insulation Sheet Mounting Plate MotorTOC Retest After Repair Electrical Diagrams LN-8N, -8NE, -8S, and -8SE Wiring Diagram Source Power to Work Connection Schematic1CR Wire Feed Motor Field Operating SchematicControl Board L5767 Schematic Variable Voltage Board L5039 Schematic Control Control Board L5767 LayoutVariable Voltage Board L5039 Layout SVM Error Reporting Form