Lincoln Electric SVM186-A service manual PC Board Assembly Control #1 G5641

Page 103

Section TOC

Master TOC

G-7

 

ELECTRICAL DIAGRAMS

G-7

PC BOARD ASSEMBLY - CONTROL #1 (G5641)

 

 

2-5641G

ENGINEERING CONTROLLED CHANGE DETAIL: NEW

 

 

 

MANUFACTURER: Yes

N.K.

1

 

 

 

 

5.00

 

6.00

5.80

 

 

R7

 

R8

C3

R9 C4

 

 

C1 C2

R5

R6

 

 

 

 

J 1

R10

 

 

C9

R21

 

 

C10

C11

C12

R24

DZ1

R4 R16

R17

C5

R18

 

 

C7

R19

 

R22

R23

 

 

X2

 

 

 

PT185/ 2 2 5

Q1

 

5.10

 

 

 

 

 

 

 

Q2

 

C14

R34 C15

 

 

 

2

 

 

R30

R31

R32

R33

 

C17

 

 

C23

 

CONTROL

 

 

G5641-

 

 

 

 

X3

R38

D4

R39

 

R37

C19

C21 R215

 

 

 

 

 

Q3

Q5 Q4

 

 

C109

C22

 

 

 

TP4

 

 

C29

D40

R216

R203

R46

 

 

 

 

R62

R48

 

R49

TP1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4

 

 

 

TP2

D6

R52

R11

D1

C16 DZ2

R25

R35

 

C20

 

R40

 

R47

 

T1

T2

LED11

LED13

LED12

R220

R219

R218

D2

C6

R12

R13

R14

R15

R20

 

 

 

 

C8

D3

 

 

 

 

C18

R26

R27

R28

R29

R36

 

 

 

 

 

R41

C24

R42

R43

R44

R45

D5

 

 

 

 

C25

R54

 

 

 

 

 

C13

C26

MOV 1 MOV 2 MOV 3

MOV4

J 2

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

D7

 

C110

R59

C27

C28

R60

R61

N.B.

D11

C36

C37

 

C35

 

 

 

 

 

R79

R212

R211

C30

R63

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R65

R66

R67

C33

D41

 

R71

C38

C39

 

 

 

 

 

 

 

 

R210

 

R209

 

 

C42

R80

R81

R82

R83

C43

R204

R195

C112 R50

R194

C111

R51

R68

R69

C34

 

R70

C31 Q6

R64

R53

C40 DZ3 R75

LED14

 

R217

Q7

DZ4

 

D8

C32

R55

R56

R57

R58

 

R73

R74

 

 

 

R72

 

 

 

 

 

R76

R77

D14 R78

 

 

 

 

 

 

 

 

 

MOV5

D12

D9

D15

D13

R90

R91

D10

 

 

N.K.

 

6

TP3

 

J

 

 

 

R94

N.G.

C58

C49

R95

 

 

R205

X6

 

 

 

 

R206

 

 

R207

R108

Q11

 

C55

R109

 

X1

D19

C50

R213

Q8

 

Q9

C45

R86

R87

 

 

R88

R89

 

D16

R84

Q10

R96

 

R97

R98

R99

R100

 

R101

R102

 

 

 

 

 

 

X7

C52

 

C56

 

X9

 

 

 

C59

 

 

 

 

 

 

 

R115

C44

R85

 

LED7

C41

X5

R199

R201

D17

C46

 

R92

C47 C48

R93

R103

R104

 

 

D18

 

 

C53

R106

R107

C57

C51

R105

X8

C54

X10

R110

Q12

 

D20

 

 

 

 

 

 

 

 

R197

R196

R198

R111

R112

R113

Q13

C113

R208

 

 

 

 

 

 

DZ5

 

 

R116

 

 

 

 

 

 

 

R124

R214

TP5

C68

R119

R12 0

R121

C66

R122

C67

R123

R125

 

 

 

 

 

 

 

 

 

 

 

 

 

R114

 

 

 

 

C62

X11

R117

C63

R118

C64

X12

TP7

D21 D22

C65

C60

C61

D23

D24

D25

D26

D27

J3

 

 

 

 

 

 

 

 

C69

 

 

 

 

X13

 

LED8

 

 

 

 

 

 

 

 

 

R128

D31

C74

C75

 

R129

C79

C80

C81

C82

C83

C84

R153 R154 DZ7

R202

 

D28

R130

R131

R137

C85

X14

C76

R132

 

R138

D33

R126

D29 D30

R127

C71

C77

R133

 

R134

 

 

DZ6

R139

 

 

 

C93

Q14

 

C87

 

 

 

 

 

Q15

0

 

 

 

 

R14

 

C72

L1

C88

L2

TRI 1

R135

R136

C78

OCI1

R143

R144

C89

L3

C95

 

C97

R16 1

OCI 2

 

 

 

TRI 2

TRI 3

 

C90

R145

R146

C91

R147

R148

 

OCI 3

 

OCI 4

TRI 4

MOV 6

MOV 7

MOV 8

 

 

 

 

 

 

 

D32

DZ8

R141

C92 R149 R150

 

R151

 

 

 

 

C94

 

 

R155

OCI 5

C98

 

Q16

R162

R158

 

 

 

 

 

 

 

C70

C73

C86

R142

 

R152

 

R156

R160

R159

R157

J 4

C96

N.K.

DZ9

D34

R171

R181 R166

L4

L5

R187

C107

 

C102

 

 

 

 

J 5

R177 C100

R178

LED10

R172

LED15

R173

LED16

 

 

 

 

 

 

 

R163

 

 

 

R167

D35

 

 

R168

R174

LED17

Q17

LED9

R200

DZ10

 

R175

 

R179

R182

C103

R183

R184

C104

Q18

C105

R185

 

 

 

D36

 

D37

R164

R165

R169

R170

R176

 

R180

 

 

R186

C99

C101

C106

N.K.

.20

0

TP6

R189

 

D38

D39

R188

C108

R190

R191

R192

R193

.20

0

COMPONENTSIDE

8.809.00

2

3

4

5

N.K.

REVISIONCONTROL

G 5 6 4 1 - 2 C 0

PART NO. IDENTIFICATION

CODE

TEST PER E4238-C

COAT WITH E1844 AND E3668 (2 COATS)

SCHEMATIC REFERENCE: G5640-2C0

MAKEDETAIL

MANUFACTUR PER E1911-RoHS

BUYBLANKCOMPLETE

(2 BOARDSPER PANEL)

4LAYER BOARD BLANKPANEL

SEEELECTRONIC FILEFOR ADDITIONAL INFORMATION.

EN-170

Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty.

NOTE: vided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may machine.

 

PROPRIETARY & CONFIDENTIAL:THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED

 

 

 

MANUFACTURING TOLERANCE PER E2056

 

TO OTHER PARTIES OR USED FOR ANY PURPOS WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.

 

 

 

 

DRAWN BY:

ddietz

1:1.25

EQUIPMENT TYPE:

 

PRECISION TIG 185/225

 

 

 

DOCUMENT

 

ON 3 PLACE DECIMALS IS ± .002 in. (± 0.05 mm)

 

 

 

 

 

UNLESS OTHERWISE SPECIFIED TOLERANCE:

CONTROL: CLEVELAND

SCALE:

 

 

 

 

 

 

 

 

PAGE 1

2

 

 

ON 2 PLACE DECIMALS IS ± .02 in. (± 0.5 mm)

 

 

@ A1 SIZE

SUBJECT:

CONTROL PC BOARD ASSEMBLY

 

 

MATERIAL TOLERANCE ("t") TO AGREE

ENGINEER:

TrangNguyen

NUMBER:

 

 

REVISION:

 

ON ALL ANGLES IS ± .5 OF A DEGREE

 

 

IF PRINTED

 

 

 

 

 

 

 

 

DOCUMENT

 

 

A SOLIDEDGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WITH PUBLISHED STANDARDS.

 

 

UNITS:

MATERIAL

 

APPROVAL

 

 

PROJECT

 

REFERENCE:

G5641-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DO NOT SCALE THIS DRAWING

APPROVED:

-

INCH

DISPOSITION: UF

 

DATE:

2/15/2008

NUMBER: CRM36266

 

G4551-1

 

 

 

Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro-

 

 

 

Insight

 

 

 

 

 

result in danger to the Machine Operator or Technician. Improper PC board repairs could

result in damage to the

 

 

 

 

 

PRECISION TIG® 225

Image 103
Contents Precision TIG ISAFETYi Fumes and Gases SafetyFor Electrically Powered equipmentSûreté Pour Soudage a LʼArc Précautions DE SûretéElectromagnetic Compatibility EMC Safety Master Table of Contents for ALL Sections Table of Contents Installation Section Input Single Phase only InstallationK2533-2 Input at Rated Output Model Height Width Depth WeightTilting Safety PrecautionsSelect Suitable Location Mounting Lifting and MovingInput and Grounding Connections Return Section TOC Input Reconnect ProcedureConnections for Stick Smaw Welding Connections for TIG Gtaw WeldingPrecision TIG Table of Contents Operation Section Operation Recommended Processes and EQUIP- Ment Product DescriptionControl Functionality Figure B.1 Control PanelPOWER-UP Sequence Machine Rating Plate Case Rear ComponentsOperating Steps Welding in TIG ModePulse TIG Control Operation Turn the power switch to on Welding in Stick ModePrecision TIG Table of Contents Accessories Section Standard Equipment Packages AccessoriesTable C.1 Table C.2 Factory Installed OptionsK2348-1 Under-Storage Cart Field Installed OptionsTable of Contents Maintenance Section Spark GAP Adjustment MaintenanceSafety Precautions Routine and Periodic Maintenance1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation Input Power CircuitGeneral Description Protected Output Rectification Feedback ControlFigure E.2 High Voltage/High Frequency Circuit High Voltage / High Frequency CircuitFigure E.5 DC Welding Current Generation DC Welding OutputFigure E.6 AC Square Wave Welding Current Generation AC Welding OutputFigure E.7 SCR Operation SCR OperationVAC Receptacle Protective CircuitsThermal Protection Overload Protection1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting and RepairWorkstations PC Board Troubleshooting ProceduresPerform the T1 Transformer Amptrol is depressed Troubleshooting and Repair Perform the SCR Bridge Test Possible Areas Misadjustments Problems SymptomsRecommended Course of Action Troubleshooting and Repair Troubleshooting and Repair Problems Symptoms Electric Shock can Perform the SCR Bridge Test Stick electrode Blasts Off when Weld current may be set too Test Description High Frequency Circuit Disable ProcedureMaterials Needed Figure F.1 Spark GAP Assembly ProcedureT1 Transformer Test T1 Transformer Test Primary Windings Primary Voltages Precision TIG Static SCR Test Precision TIG 225 Control Test ProcedureCase Cover Removal and Replacement Procedure Precision TIG Active SCR Test Active SCR Test Figure F.6 SCR Gate Locations Precision TIG Scope Settings Normal Open Circuit Voltage Waveform AC TIG ModeNormal Open Circuit Voltage Waveform DC TIG Mode Normal Open Circuit Voltage Waveform AC Stick Mode Normal Open Circuit Voltage Waveform DC Stick Mode Typical Output Voltage Waveform Machine Loaded AC TIG ModeMachine Loaded to 180 Amps AT 16VDC DC TIG Mode Machine Loaded to 180 Amps AT 26VDC AC Stick ModeDC Stick Mode Troubleshooting and Repair Precision TIG SCR Bridge Assembly Removal and Replacement Procedure Figure F.7 Case Back Mounting Screws SCR Bridge AssemblyProcedure Plug J2 Removed Replacement Procedure Precision TIG Polarity Switch Removal and Replacement Procedure Removal Procedure Polarity SwitchReplacement Procedure Precision TIG High Voltage Transformer Removal and Replacement Procedure Transformer Secondary Leads High Voltage TransformerFigure F.12 High Voltage Transformer Mounting Insulators Precision TIG 53F-53 Perform the SCR Bridge Assembly Replacement Procedure Input Idle Amps Retest After RepairRecommended Meters for Machine Output Tests Precision TIG Table of Contents Diagram Section Electrical Diagrams Schematic Complete Machine ALL Codes G5647 Schematic Control PC Board #1 G5640 Schematic Control PC Board #2 G5640 Schematic Control PC Board #3 G5640 PC Board Assembly Control #1 G5641 PC Board Assembly Control #2 G5641 1B0-S22530 PC Board Assembly Bypass L10121

SVM186-A specifications

The Lincoln Electric SVM186-A is a versatile and highly efficient welding machine that stands out in the competitive landscape of industrial welding equipment. Designed to meet the needs of both professionals and hobbyists, this machine combines advanced technology with robust construction, delivering outstanding performance in various welding applications.

One of the standout features of the SVM186-A is its multi-process capability. This welding machine can handle MIG, TIG, and Stick welding processes, making it suitable for a diverse range of projects, from light fabrication to heavy-duty work. This flexibility reduces the need for multiple machines, saving time and space for users who require versatility in their welding operations.

The SVM186-A is powered by a reliable and durable inverter technology, which ensures a stable arc and efficient operation across different materials, including stainless steel, aluminum, and mild steel. This inverter technology not only enhances performance but also reduces energy consumption, making it an environmentally friendly choice.

Another notable characteristic of the SVM186-A is its user-friendly interface. The digital display provides real-time information on voltage and wire feed speed, allowing welders to easily adjust settings for optimal results. This intuitive control panel design makes it accessible for both novice welders and seasoned professionals who value precision.

The machine is also built with safety features in mind. It comes equipped with overcurrent protection and thermal overload protection to prevent damage during operation. This ensures that users can work confidently, knowing that the equipment is designed to handle demanding tasks while prioritizing safety.

Portability is another advantage of the SVM186-A. Weighing in at a relatively light weight compared to other industrial welders, this machine is designed for ease of transport. Whether working on-site or in a workshop, welders can easily move the equipment as needed.

In summary, the Lincoln Electric SVM186-A is a sophisticated welding machine that merges technology and practicality. Its multi-process capability, inverter technology, user-friendly interface, safety features, and portability make it a top choice for those seeking dependable and efficient welding solutions. Whether for professional fabrication or personal projects, the SVM186-A is equipped to handle the demands of modern welding tasks with exceptional ease and effectiveness.