Lincoln Electric SVM134-A service manual Schematic Idler PC Board, 16990 M

Page 96

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G-4	ELECTRICAL DIAGRAMS	G-4
SCHEMATIC - IDLER PC BOARD

16990 M

NOT USED

X1 -D

11

9

R8

D2

13

14

X1 -C

YEL

R9

R15

Y

TO BATTERY

10

8

+t

B3

15.0

15.0

56

D1

GND

GND

B4

W

TO SOLENOID

WHITE

3

16

C3

DZ1

C4

X1

10V

50

X2

C1

5W

15V

LM2901

4536B

GND

10K

12

8

1R

TO REED SW.

GND

GND

RED

R

B5

R13

13.7K

C10

D7

.047

47.5K

10K

100V

7

2R

22.1K

R

T13157-14

3R

R20

D

B

33.2K

R6

C8

B1

511

10K

Q1

61R

R5

133K

15A

CR1

G

60V

S

5

1

V DD

16

DZ3

CR1

SET

7

15V

DZ2

2

2

15

X1 -A

1W

27V

X1

RESET

MONO IN

-B

3

X2

14

1

5W

B

B2

R17

4

IN 1

OSC INH

6

1.00K

4

OUT 1

DECODE

13

R12

5

OUT 2

D

12

26.7K

C9

6

8 BY-PASS

C

11

7

10

CLOCK INH

B

D5

8

VSS

9

D8

A

1N4936

3.32K

0

4536B

C2

1

R

C6

22.1K

18

11R

.5

4R

15V

5W

P.C.BOARD IS CONNECTED DIRECTLY

GND

TO FRAME GND THRU MOUNTING SCREW

M16990-2BA

LEAD COLOR CODE

GENERAL INFORMATION

LAST NO. USED

ELECTRICAL SYMBOLS PER E1537

R-

20

B

BLACK

CAPACITORS =

MFD ( .022/50V

UNLESS OTHERWISE SPECIFIED)

LABELS

C-

10

RESISTORS = Ohms (

1/4W

UNLESS OTHERWISE SPECIFIED)

D-

8

Y

YELLOW

DIODES =

1A, 400V

(UNLESS OTHERWISE SPECIFIED)

SUPPLY

VOLTAGE NET

NOTES :

POWER SUPPLY SOURCE POINT

R

RED

N.A.

SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE

COMMON CONNECTION

W

WHITE

WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY

FRAME CONNECTION

NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE

EARTH GROUND CONNECTION

NUMBER.

UNLESS OTHERWISE SPECIFIED TOLERANCE

Ch'ge.Sht.No.

THE LINCOLN ELECTRIC CO.

EQUIP.

CLASSIC SA200

ON HOLES SIZES PER E-2056

10-29-93A

TYPE

ON 2 PLACE DECIMALS IS + .O2

IDLER PCB SCHEMATIC

ON 3 PLACE DECIMALS IS + .OO2

CLEVELAND, OHIO U.S.A.

SUBJECT

ON ALL ANGLES IS + .5 OF A DEGREE

MATERIAL TOLERANCE ("t") TO AGREE

SCALE

NONE

S20334

SHT.

M 16990

AUSTRALIA

CANADA

FRANCE

WITH PUBLISHED STANDARDS

I.E.B.

2/10/93

CHK.

SUP'S'D'G.

DR.

DATE

NO.

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

CLASSIC I

Image 96

Contents Classic I TM Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications ClassicSafety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Cooling System MufflerExhaust Spark Arrester TrailersMachine Grounding Figure A.1 Ground Stud LocationAuxiliary Power Receptacle PLUGS, and HAND-HELD Equipment Electrical Output ConnectionsWelding Cable Connections Cable size for combined lengthClassic Table of Contents Operation Section Safety Instructions OperationOperating Instructions Operational Features and Controls Recommended ApplicationsWelder GeneratorControls and Settings WELDER/GENERATOR ControlsControl of Welding Current Figure B.2 Current ControlsGasoline Engine Controls Return Section TOCEngine Operation Before Starting the EngineStarting the Engine Stopping the Engine Cold Weather StartingBREAK-IN Period Welding Operation After you finish weldingAuxiliary Power Table B.1 Range Settings for Wire SIZE/SPEEDTable of Contents Accessories OPTIONS/ACCESSORIES Semiautomatic Welding AccessoriesConnection of Lincoln Electric Wire Feeders Wire Feed Module see Figure C.1Connection of the LN-25 to Classic I Across the ARC withClassic Table of Contents Maintenance Safety Precautions Routine and Periodic Maintenance Engine MaintenanceFigure D.1 OIL Drain and Refill MAX MIN Figure D.2A Engine Coolant Drain Plug After cleaning or when installing a new spark plug Gap Specifications 0.032 inch .8 mmSet the terminal gap with a feeler gauge or gapping Tool. See Figure D.4Battery Maintenance Classic I charging system is NegativeWELDER/GENERATOR Maintenance Return to Section Return to Section TOCIdler Maintenance Figure D.5 Major Component Locations Classic Table of Contents Theory of Operation Section BATTERY, STARTER, Engine Alternator and OIL Switch Circuit Theory of OperationGeneral Description ENGINE, Main Generator Armature and Frame and DC Exciter Excitation FlashingMain SHUNT, Interpole and Series Coils Fine Current Adjustment Current Range SelectorEngine Idler Circuit DC Generator Machines Return to Section TOC Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures PC Board can be damaged by static electricityTroubleshooting Guide Observe Safety GuidelinesDetailed in the beginning of this manual Shunt Field Winding Test Main Generator Throttle Adjustment Test Output Problems Function Problems Troubleshooting & Repair Engine Problems Welding Problems DC Exciter Test Test DescriptionMaterials Needed Test Procedure DC Exciter TestFigure F.2 Exciter Cover Removal Small Flex Lead Solid Shunt Coil and Series Coil Resistance TestsIdler Solenoid Test Troubleshooting & Repair Main Generator Shunt Field Winding Test Main Generator Shunt Field Winding Test Figure F.6 Plug P10 PIN Assignments TAB Engine Throttle Adjustment Test Engine Throttle Adjustment Test Strobe Tach MethodEngine Throttle Adjustment Test Adjust High IdleAdjust Low Idle Flashing the Fields DescriptionProcedure Flashing the FieldsFigure F.11 Brush HOLDER/BATTERY Jumper Connections Scope Settings Normal Open Circuit Voltage Waveform 115VDC SupplyHigh Idle no Load Fine Current Control Rheostat AT Maximum Normal Open Circuit DC Weld Voltage Waveform Machine Loaded Selector Switch AT Maximum Typical DC Weld Voltage WaveformDC Exciter Armature and Field Coils Removal and Replacement DC Exciter Armature Removal Procedure ReassemblyDC Exciter Armature and Field Coils Field Coils Removal Procedure Perform the DC Exciter Armature Removal ProcedureMain Generator Frame Removal and Replacement Replacement Main Generator Frame Removal Bolt / NUTPerform the DC Exciter Armature Removal Figure F.16 Selector Switch Lead Removal Terminal LeadFigure F.18 Choke Control Cable Removal Loosen Here Main Generator Frame Removal Figure F.20 Front Panel Fastener Removal Troubleshooting & Repair Feet Remove Mounting NUTS, Washers BoltsPerform the DC Exciter Armature Reassembly Procedure Main Generator Armature Removal and Replacement Main Generator Armature Removal Armature is now free to be removed from the engineDC Auxiliary Power Receptacle Output Retest After RepairEngine Output Welder DC OutputElectrical Diagrams Section Electrical Diagrams Wiring Diagram ClassicWire Feed Module Wiring Diagram Wiring Diagram Wire Feed ModuleSchematic Idler PC Board 16990 MPC Board Assembly Idler PC Board Idler