Lincoln Electric SVM123-A service manual Control PC Board G1585 Layout

Page 109

Section TOC

Master TOC

G-4

ELECTRICAL DIAGRAMS

G-4

Control PC Board (G1585) Layout

 

 

Return to

TOC

Return to

TOC

R26

 

 

 

 

 

 

 

 

X

 

X

 

 

 

 

 

 

 

 

 

 

 

R37

D12

R73

DZ9

R74 R148

C5

R112

R142

X

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

X

 

 

R1

 

 

 

 

 

 

 

 

X

 

X

 

 

 

 

 

 

 

 

 

 

 

X

X

 

X

 

X

X

 

X

 

X

X

 

X

 

X

X

R113

X

R3

X

X

 

X

 

X

X

 

X

 

X

X

 

X

 

ITEM

REQ'D.

PART No.

IDENTIFICATION

C1,C18,C20

3

S16668-5

.022/50

C2

1

S13490-48

47/160

C3

1

S13490-19

1.8/20

C4,C8,C11,C12

4

S13490-39

18/15

C5,C6,C7,C13,C24,C25,

9

S13490-102

.047/100

C28,C29,C30

 

 

 

C10

1

S13490-27

2.7 MFD 75V

C15

1

S13490-63

.47/50

C16,C26

2

S13490-35

50/16

C17

1

S13490-67

2/50

C21,C27

2

T11577-28

.22/100

C22

1

S13490-42

1.0/35

C9,C14,C19,C23

4

T11577-38

.02/600

D1,D2,D3,D4

4

T12199-2

1N4007

D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,D15,

 

 

 

D16,D17,D18,D19,D20,D23,D24,D25,D26,

30

T12199-1

1N4004

D27,D28,D29,D30,D31,D32,D33,D34,D35,

 

 

 

D36

 

 

 

DZ1

1

T12702-34

IN5353

DZ2

1

T12702-33

1N5347B

DZ3

1

T12702-18

1N821

DZ4

1

T12702-27

1N4740

R38

 

DZ7

R133

R27

R82

C6

D5

G1585-[ ]

D26

D23

D24

D35

R83

 

 

 

 

 

 

 

 

TP1

C29

 

 

LED2

 

 

 

 

 

 

LED1

R79

 

 

 

 

 

 

 

 

R50

 

 

 

 

 

 

 

DC1000 CONTROL

 

 

 

 

 

 

 

 

 

D1

D2

D3

 

D4

 

 

 

 

 

 

R4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C2

 

 

DZ1

 

 

DZ3

R70

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DZ2

R13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

C10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C17

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q4

 

 

 

QU2

 

 

QU1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED3

DZ5,DZ11

2

T12702-31

1N5237B

DZ6,DZ9,DZ12,DZ13

4

T12702-29

1N4744A

DZ7

1

T12702-30

1N5225B

DZ8,DZ14

2

T12702

-12

1N5253B

DZ10

1

T12702

-15

1N5231B

DZ15

1

T12702

-19

1N4742A

 

 

 

 

L1

1

T12218-4

33 mH

LED1,LED2,LED3,LED4,LED5

5

T13657

-2

RED LED

Q1,Q3

2

T12704-68

2N4401

Q2,Q5,Q6,Q7,Q8,Q9

6

T12704-36

2N4857

Q4

1

T12704-69

2N4403

TOC

J1

J2

R2

R146

R54

L1

LED5

Q6

R40

R41

R34

 

 

 

 

R46

 

 

 

 

 

D13

 

 

R55

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R56

 

D32

R99

R106

 

R107

 

 

 

 

Q2

 

Q7

 

 

 

 

 

 

 

 

 

 

DZ10

DZ14

R115

R28

R15

D25

R14

R32

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DZ15

DZ4

D30

 

R100 R105

 

R104 R86

R31

 

 

C13

R52

R53

 

X1

 

 

 

 

 

 

 

 

 

Q1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R143

DZ8

R84

D28

C4

R24

R17

R85

R19

R18

D8 D7

R16

DZ6

D9

R5

R6 C3

 

C23

 

 

 

 

 

 

 

LED4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C9

 

 

 

 

 

 

 

 

 

 

C26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C19

 

 

 

 

 

 

DZ12

 

 

 

 

 

 

 

 

 

R57

C11

R102

 

 

 

 

 

 

 

 

 

Q8

 

 

 

 

 

 

C27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D18

R22

R25

R20

R23

R147

C18

R71

D17

SCR1

 

 

 

 

 

 

 

DZ5

 

 

R103

R94

R80

R88

R89

R90

R91

R92

D6

R110

D34

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C24

QU1,QU2

2

T12707-4

2N6027

R1,R113

 

T12300-47

200 15W

R2,R146

2

S19400-1503

150K 1/4W

R3

1

T14648-15

700 5W

R4

1

T14648-7

470 5W

R5,R15,R24,R103,R115

5

S19400-1004

1M 1/4W

R6,R22,R59,R60,R86,R87,

9

S19400-1001

1K 1/4W

R105,R106,R107

 

 

 

 

R7,R8

2

S19400-2671

2.67K 1/4W

R9,R76,R90,R95,R96

5

S19400-2213

221K 1/4W

R10,R63

2

T10812-39

50K 1/2W

R11

1

S19400-2673

267K 1/4W

R12,R35,R53,R91,R92,R93

6

S19400-6812

68.1K 1/4W

R13

1

S19400-3010

301 1/4W

R14

1

S19400-4752

47.5K 1/4W

R16,R28,R30,R31,R32,R62,R71,R77

8

S19400-4751

4.75K 1/4W

R17,R20

2

S19400-3922

39.2K 1/4W

R18,R25,R29,R57,R88

5

S19400-1502

15.0K 1/4W

Return to Section

Return to Section TOC

Return to Master

Return to Master TOC

R39

J3

 

 

 

 

C20

 

 

 

 

 

 

 

 

 

 

 

 

C8

R78

D29

R87

Q5

R30

R29

R145

R77

D33

D27

R111

R136

C30

C7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R9

 

 

 

 

 

 

 

 

 

R7

 

R10

 

 

 

 

 

 

 

 

 

 

C14

R66

 

 

 

 

 

D14

D15

D10

 

D11

 

 

R62

 

R65

 

 

 

 

 

 

Q3

 

 

 

R64

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R63

 

 

 

 

 

 

 

 

 

 

 

 

 

R8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R48

 

 

 

 

 

 

C21

C25

R12

R11

R58

R47

R76

D20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1

 

 

 

X2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C16

 

 

 

 

 

D36

D19

R108

 

 

 

 

 

 

DZ11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DZ13

 

 

 

 

 

 

 

 

 

 

 

C28

D16

R61

D31

R59

R21

C22

C12

R60

R35

R81

 

 

 

 

 

 

R98

R93

R96

R95

R97

C15

 

 

 

 

 

 

 

 

 

 

 

 

Q9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R114

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R19,R78,R79,R100

4

S19400-1003

100K 1/4W

R21,R61,R85

3

S19400-4750

475K 1/4W

R23,R147

2

S19400-20R0

20.0 1/4W

R26,R38

2

T10812-68 1K 1/2W

 

R27,R37,R58,R81

4

S19400-2211

22.1K 1/4W

R34

1

T10812-67

 

100K 1/2W

R39

1

T10812-77

 

20K 1/2W

R40,R64,R65

3

S19400-1501

1.5K 1/4W

R41,R47,R97

3

S19400-2670

267 1/4W

R46,R70,R74,R148

4

S19400-3320

332 1/4W

R48

1

S19400-4753

475K 1/4W

R50,R83,R143

3

S19400-1301

1.3K 1/4W

R52,R99,R110

3

S19400-2212

22.1K 1/4W

R54

1

T12732-3

 

27K 1W

R55,R56,R104

3

S19400-8252

82.5K 1/4W

R66,R111,R136

3

S19400-47R5

47.5 1/4W

R73,R102,R114

3

T14231-3

15 .5W

R80,R94,R98

3

S19400-1002

10K 1/4W

R82,R133

2

S19400-1620

1.3K 1/4W

R84

1

S19400-6810

1.3K 1/4W

R89

1

S19400

-6811

6.81K 1/4W

R108

1

S19400

-1000

100 1/4W

R112,R142

2

S19400

-75R0

75.0 1/4W

R145

1

S19400

-2432

24.3K 1/4W

 

 

 

 

 

SCR1

1

S15161

-17

 

TP1

1

T13640-11

45J

X1,X2

2

S15128

-4

 

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 resultIDEALARC DC1000 in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.

Page 108 Page 110
Image 109
Page 108 Page 110
Contents Idealarc Electric and Magnetic Fields SafetyElectric Shock can kill Welding Sparks can cause fire or explosion Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Installation Output Technical Specifications Idealarc DCSelect Proper Location Electric Shock can KillElectrical Input Connections StackingFuse and Wire Sizes Reconnect ProcedureInput Power Supply Connections Ground ConnectionFigure A.3a Input Connection Diagram Figure A.3c -Input Connection Diagram Figure A.3d Input Supply Connection Diagram Output Connections Cutting Operation Connection for AIR/CARBON ARCIdealarc DC-1000 Operation Electric Shock can kill Safety InstructionsDesign Features Advantages Operational Features and ControlsGeneral Description Recommended Processes and EquipmentWelding Capability Return to Section Controls and SettingsRemote Control of Machine Operation Welding Procedure RecommendationsNA-3 Automatic Wire Feeder ARC Striking with Idealarc DC-1000 and the NA-3 Start Board Remote LN-8 SEMI-AUTOMATIC Wire FeederTable of Contents AccessoriesConnecting the NA-3 or LT-7 to OPTIONS/ACCESSORIESIdealarc DC-1000 Remote Output Control OptionalFigure C.2 NA-5 Wire Feeder Connection to Idealarc DC-1000 Connecting the NA-5 to the Idealarc DC-1000Connecting the LN-8 to the Idealarc DC-1000 Connecting the LN-9 Wire Feeder to the Idealarc DC-1000 Connecting the LN-7 Wire Feeder to the Idealarc DC-1000 Maintenance Routine and Periodic Maintenance Safety Precautions Electric Shock Can KillFigure D.1 Major Component Locations Idealarc DC-1000 Theory of Operation TOR, and Main Transformer Input Line VOLTAGE, ContacCONTROL, and Feedback Output RectificationCircuits Contactor HOLD-IN Protection DevicesFigure E.5 SCR Operation SCR OperationIdealarc DC-1000 Troubleshooting & Repair Locate Problem Symptom HOW to USE Troubleshooting GuideBoard can be damaged by static electricity PC Board Troubleshooting ProceduresControl Transformer Test Return Return to Master TOC Return Return to Section TOC Perform SCR Output Bridge Troubleshooting & Repair Function Problems Perform Firing Board Test Perform Control Board Test SCR Output Troubleshooting & Repair Control Transformer T2 Voltage Test Test DescriptionFigure F.1 Control Transformer Lead Location Test ProcedureFigure F.2 Control Transformer X1 and X2 Test Points Main Transformer T1 Voltage Test Test Description Figure F.4 Main Secondary Lead Test Points From Expected VAC Firing Board Test Test Procedure for Normal Firing Board Operation Figure F.7 Terminal Strip Jumper Wire Connections Figure F.8 Output Pilot Relay 4CR Location Then Table F.1 LED 7, 8 and 9 Check ListControl Board Test Figure F.9 Control Board LED and Pin Locations Test Procedure for Normal Control Board OperationIf LED 1 does not light, when the start switch is on Possible Problems Pertaining to the Control BoardFigure F.11 LED 2 Open Circuit Voltage Test Points If LED 4 lights Static SCR Test Figure F.12 Test ProcedureFigure F.13 SCR Heat Sink Assembly Test Points Static SCR Test Active SCR Test Active SCR Test Figure F.16 Heat Sink Assembly Test Points Battery Test Scope Settings Troubleshooting & Repair Troubleshooting & Repair Troubleshooting & Repair Troubleshooting & Repair Troubleshooting & Repair Troubleshooting & Repair Input Contactor 1CR Cleaning AND/OR Replacement Figure F.18 Input Contactor Cover Removal Cleaning ProcedureRemoval Contactor ReplacementInstallation SCR Output Bridge Replacement Figure F.22 Preparation For SCR Output Bridge Removal SCR Output Bridge RemovalFigure F.23 SCR Output Bridge Removal Removal of Individual SCR Heat Sink Assemblies SCR Output Bridge Installation SCR Heat Sink InstallationTOC Removal and Reassembly of Lift Bail Figure F.25 Lift Bail Removal Removal of Lift BailReassembly of Lift Bail Main Transformer Removal and Installation Figure F.26 Main Transformer Disassembly Main Transformer Disassembly and AssemblyCoil Removal Replacement Main Transformer DisassemblyTransformer Reassembly Transformer InstallationIdealarc DC-1000 Open Circuit Voltages Input Idle Amps and WattsIdealarc DC-1000 Electrical Diagrams Idealarc DC-1000 Wiring Diagram Codes 9919 Operating Schematic Control PC Board G1585 Layout Firing PC Board G1486-5 and above Layout Control PC Board G1585 Schematic Firing PC Board G1486-5 and above Schematic Output Snubber M14312 Schematic
Top Page Image Contents