Lincoln Electric SVM185-A service manual Troubleshooting and Repair

Page 84

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F-10

TROUBLESHOOTING AND REPAIR

F-10

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

 

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

 

 

 

FUNCTION PROBLEMS

 

 

The displays are blank (not lit). The

1. Check for loose or faulty connec-

1. Check for 5VDC at J37 pins 2

wire feeds when the gun trigger is

tions at plug on the display board,

and 10 on the display board. If 5

activated.

 

to plug on the memory board to

VDC is present, then the display

 

 

the plug on the msp-4 board to

board may be faulty.

 

 

 

the plug on the push-pull daugh-

 

 

 

 

ter board to the feed head board.

2. If the 5VDC is low or not present,

 

 

 

check for loose or faulty connec-

 

 

 

tions in SPI circuit. See machine

 

 

 

schematic.

 

 

 

 

3. The feedhead control board may

 

 

 

be faulty.

 

 

 

 

The dual procedure is not function-

1. Make certain the LED indicator on

1. Check shielded cable lead and

al when using the remote Dual

the Dual Procedure Panel is in the

connections from J86 on PC BD

Procedure

switch. The STATUS

middle position. This enables the

to MSP panel. Check SPI cable

LEDs are steady green on the

gun remote dual procedure

from MSP panel to Dual/memory

power source, and wire drive units.

switch.

panel. Per machine schematic.

 

 

 

2. Check for 5VDC at J86 pins 2

 

 

 

and 10. Check for 15VDC at J86

 

 

 

pins 1 and 10. If voltage is not

 

 

 

present replace feed head. If

 

 

 

leads and voltages are good

 

 

 

replace dual/memory panel.

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877.

POWER FEED® 25M

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Contents Power Feed 25M Safety Power Feed 25MElectric Shock can kill Fumes and GasesFor Electrically IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcElectromagnetic Compatibility EMC Safety Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications Power Feed 25M K2536-1Safety Precautions High Frequency Protection LocationElectric Shock can Kill Power Source Wire Feeder WiringDigital Control CABLE, K1543-XX FunctionWeld Cable Size Coaxial Weld CableTable A.1 Electrode Polarity Shielding GAS Connection GmawGtaw Build UP of Shielding GAS MAYChanging the Drive Motor Gear Ratio OFFWire Drive Configuration Procedure to Install Drive Rolls and Wire GuidesRemote Sense Lead Specifications Loading Spools of WireTypical System Configurations Table of Contents Operation Section Safety Precautions OperationGeneral Description Definition of Welding TermsDuty Cycle Recommended Power Sources Recommended ProcessesEquipment Limitations Connector for a remote control 11. ON/OFF switchPin connector Left Display windowON-OFF Switch Status LEDTable B.1 DefinitionTechnology Power Sources 7OPERATIONB-7Making a Weld with Waveform Smaw Stick WeldingProcess Mode 8OPERATIONB-8Smaw Stick Welding Display MSP4 OperationNON-SYNERGIC Gmaw and Fcaw WeldingThree non-synergic welding modes are available MSP4 Operation Non-Synergic Gmaw and Fcaw Welding Display Modes 5Gmaw MIG Synergic Welding Figure B.5220 26.4 Steel and Stainless Synergic GMAW-P Pulsed MIG Welding ARC ControlStainless Steel Gmaw Migwelding 220 16OPERATIONB-16 Aluminum Synergic GMAW-P PulsedMigand GMAW-PP Pulse on Pulse Pulse-on-Pulse WeldingAluminum GMAW-P and GMAW-PP Aluminum Pulse WeldingAluminum GMAW-P and GMAW-PP Welding Figure B.14Aluminum Pulse and Pulse-On-Pulse Synergic Weld Display GMAW-STT Welding Figure B.15109 GMAW-STTTailout Figure B.16Gtaw TIG Welding Touch StartTIG OFF SET-UP Features Menu Power Feed10M All Models Feed 10AQuick Preflow time will not be accessible from the MSP4 Operation PROCEDURE/MEMORY Panel Opera User Memories Tion Limits Parameter Range UnitsMSP4 Display Limits may be set forHigh Limit Low LimitParameter Name Internal Controls Item D EscriptionCold FEED/GAS Purge Switch Light SwitchHeater Switch Step Trigger Operation34OPERATION PreflowStrike WeldFigure B.20 Upslope Figure B.2137OPERATIONB-37 PostflowStart Figure B.23Description Rear ControlsOperation on Lincnet Power Sources Flow MeterScfh Liter/MinTable of Contents Accessories Section Accessories Factory Installed EquipmentWire Type Electrode Size KP KIT Drive Roll Kits UsedK2593-xx #1 Co-Axial Power Cable Accessories K1500-5 Gun Receiver Bushing compatible Installation Cooling KITUse a 5/16 nut driver to remove the screws holding Water cooling cover on the case front of the innerPython Water Cooled Guns Figure C.1Power Feed 25M Table of Contents Maintenance Section Maintenance Routine MaintenancePeriodic Maintenance Calibration Specification1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation Figure E.2 General Physical DescriptionPower Feed 25M Figure E.3 GAS Solenoid ControlsControl BOX User Interface Troubleshooting Component is causing the problem. By using the statusComponent Status Lights Status Light StatesStatus Light States CON’T 1TABLE of Contents Troubleshooting and Repair F-1 2TROUBLESHOOTING and REPAIRF-2 HOW to USE Troubleshooting GuideTroubleshooting and Repair PC Board Troubleshooting ProceduresSee Setting DIP Switches Wire Drive Troubleshooting and Repair Output Problems Power Make certain the Power Wave Power source is functioningSetting Dip Switches in the Wire Troubleshooting and Repair ArcLink System Error Codes Fault Code Description Possible AdjustmentsPower Feed 25M Voltage Sense PC Board Test Test DescriptionMaterials Needed Procedure Figure F.1 Plug J1 and J2 LocationsTach Feedback Test Blue RED Drive Motor Test #550 #551 Gear BOX and Drive Motor Removal and Replacement Procedure Figure F.4 Gear BOX and Drive Motor Removal and Replacement Gear BOX Removal and Drive MotorTo Remove the Wire Drive Assembly from the Gear BOX Replacement ProceduresTo Remove the Drive Motor from the Gear BOX SET UP Retest After RepairTable of Contents Diagram Section Electrical Diagrams Wiring Diagram Complete Machine Code 11313 G5585Schematic Complete Machine Code 11313 G5638 G5638Schematic 42 VAC & Arclink Feeder PC Board #1 G3883-2 Schematic 42 VAC & Arclink Feeder PC Board #2 G3883-2 Schematic MSP4 Optional Display PC Board G4456 Schematic SPI Display PC Board L11756 PC Board Assembly SPI Display L11757-1 Schematic Voltage Sense Select PC Board S24779 PC Board Assembly Voltage Sense Select M19540 Schematic Spool GUN PC Board L12008 PC Board Assembly Spool GUN M20159
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