Lincoln Electric SVM161-A service manual Phillips Head Screws

Page 103

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F-63

TROUBLESHOOTING AND REPAIR

F-63

 

OUTPUT FILTER BOARD

REMOVAL AND REPLACEMENT (continued)

FIGURE F.33 – CASE FRONT SCREW REMOVAL

Phillips Head Screws

WARNING

 

 

 

 

 

 

STICK

4-STEP

 

LOCAL

 

 

DC TIG

2-STEP

 

REMOTE

 

MODE

AC TIG

TRIGGER

 

 

 

 

WELD

PULSE FREQUENCY

 

 

 

 

CURRENT

Hz

 

 

 

UPSLOPE

 

% ON TIME

DOWNSLOPE

 

 

sec

 

 

sec

 

 

 

 

 

 

 

A

 

 

 

 

POSTFLOW

OUTPUT

 

 

 

 

sec

 

 

 

BACKGROUND

 

 

 

 

 

CURRENT

 

 

 

 

 

 

FINISH

 

 

 

 

 

CURRENT

 

PARAMETER

 

 

 

 

 

SELECT / HOLD

V

 

PULSE ON

 

 

AC FREQUENCY Hz

 

 

 

 

 

AC BALANCE % EN

 

®

 

 

 

 

Casefront

Mounting

Screws

Phillips Head Screws

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9.Using a 17mm wrench, remove the heavy lead from the positive output terminal.

10.Using a 13mm wrench, remove the heavy lead from the high frequency transformer.

11.Disconnect plugs CN1 and CN2 from the out- put filter board. See Figure F.34.

12.Using a 90o phillips head screwdriver, remove the output filter board mounting screws.

NOTE: The output terminal assembly may have to be removed to gain access to the output filter board mounting screws.

13.Remove the large nut holding the output filter board to the positive terminal. See Figure

F.34.

14.Disconnect plug CN7 from the control/display board assembly. See Control/Display Board Removal Procedure for plug CN7 location.

15.Carefully remove the output filter board by slid- ing it by the plug and lead assembly.

16.Replace the output filter board.

17.Maneuver the new board into its proper loca- tion from which it was previously removed.

INVERTEC® V205-T AC/DC™

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Contents Invertec V205-T AC/DC Invertec V205-T AC/DC SafetyCan be dangerous Electric Shock can kill ARC Rays can burnSparks can cause fire or If damaged Explosion Powered equipmentWelding Cutting Cylinder may explodeSûreté Pour Soudage a L’Arc Précautions DE SûretéSafety Methods of Reducing Emissions Mains Supply Master Table of Contents for ALL Sections Table of Contents Installation Section Operating Temperature Range Storage Temperature Range InstallationEnvironmental Area Select Suitable LocationStacking TiltingInput Connections Reconnect ProcedureEngine Driven Generator Attachment Plug Installation230V Input 115V InputOutput and GAS Connection for TIG Welding Figure A.1 Output ConnectionsWork Cable Connection Shielding GAS Connection Remote Control ConnectionInvertec V205-T AC/DC Table of Contents Operation Section Welding Capability Safety InstructionsOperation General DescriptionRear Control Panel Figure B.1 OPERATIONB-3Figure B.2 Controls and SettingsLocal/Remote push button Selects the welding Step DiagramTIG DC TIG AC Indicator Parameter Default SET UP MenuWelding Polarity Output LimitationsFigure B.7 Filler Material Steel TIG WeldingCopper TIG Welding Tips for AC TIG WeldingProtective GAS AC TIG Welding Quick Start UPDC TIG Welding Quick Start UP Table of Contents Accessories Section Cable Plugs AccessoriesOptional Accessories Compatible EquipmentTable of Contents Maintenance Section Routine Maintenance MaintenanceSafety Precautions Input Filter Capacitor Discharge ProcedureFigure D.1 Major Component Locations 3MAINTENANCEInvertec V205-T AC/DC 1TABLE of CONTENTS-THEORY of Operation Section E-1 Input Board and BUS Board Theory of OperationFigure E.3 Main Igbt Inverter Board Main Igbt Inverter BoardSuperimposition Board Main TransformerOutput Module Transistor Board Output Module and Clamping BoardHigh Frequency HF Board CONTROL/DISPLAY BoardOutput Filter Board Passive Active Insulated Gate Bipolar Transistor Igbt Operation1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting and RepairElectric Shock can kill PC Board Troubleshooting ProceduresIgbt Perform the Input Filter Board Igbt Inverter Board Test Secondary Output Board Assembly Test See the Output Filter Display Troubleshooting and Repair External DiagnosticsFigure F.2 Troubleshooting and Repair Internal DiagnosticsLED Internal DiagnosticsInvertec V205-T AC/DC Materials Needed Test DescriptionCapacitor Solder Resistor Pads Input Filter Capacitor Discharge ProcedureInput Filter Board Test Input Filter Board Test ProcedureInput Filter Board Input Filter Board Invertec V205-T AC/DC Main Igbt Inverter Board LOW Voltage Test Figure F.6 Main Igbt Inverter Board Location Main Igbt Inverter Board LOW Voltage TestLED Main Igbt Inverter Board LOW Voltage TestFigure F.7 Main Igbt Inverter Board Location TP2 MF2CONTROL/DISPLAY Board Test Figure F.8 CONTROL/DISPLAY Board Location CONTROL/DISPLAY Board TestFigure F.9 CONTROL/DISPLAY Board Location CN2Figure F.10 Plugs CN1, CN2 & CN7 CN1BUS Board Test Figure F.11 BUS Board Location BUS Board TestTable F.8 Plug CN7 Test Points Table F.5 Plug CN2 Test PointsTable F.6 Plug CN3 Test Points Table F.7 Plug CN4 Test PointsCN1 CN2 Main Inverter Board Power Factor Section Test Table F.10 Voltage Checks with 115 VAC Applied to Machine Main Inverter Board Power Factor Section TestTable F.11 Resistance Checks TP9 Gndpwr RL1 Invertec V205-T AC/DC Output Filter Board Test Figure F.16 Output Filter Board Location Output Filter Board TestFigure F.18 Output Filter Board Plug CN1 Figure F.17 Output Filter Board Plug LocationInvertec V205-T AC/DC Secondary Output Board Assembly Test Figure F.19 Secondary Power Board Location Secondary Output Board Assembly TestOFF GA-SA Table F.14 Output Diode Resistance Check Mode Positive Meter Negative Meter Expected Reading ProbeMain Inverter Board Welding Logic and Inverter Section Test Welding Logic and Inverter Section Test Main Inverter BoardTable F.17 Voltage Checks with 115 VAC Applied to Machine Table F.16 Feedback Voltage SignalsTable F.18 LED Check in Stick Mode Table F.15 LED FunctionFigure F.22 Main Board Inverter Section TP9 Ground Power Invertec V205-T AC/DC Input Filter Board Removal and Replacement Figure F.24 Input Filter Board Location Input Filter Board Removal and ReplacementRV1 RV2 Invertec V205-T AC/DC Main Igbt Board Removal and Replacement Figure F.27 Main Igbt Board Location Main Igbt Board Removal and ReplacementRV1 RV2 CN4 RV3 RV4 CN5 RV5 RV7 RV6 Invertec V205-T AC/DC CONTROL/DISPLAY Board Removal and Replacement Figure F.29 CONTROL/DISPLAY Board Location CONTROL/DISPLAY Board Removal and ReplacementCN2 Invertec V205-T AC/DC Output Filter Board Removal and Replacement Figure F.32 Output Filter Board Location Removal and ReplacementPhillips Head Screws CN1 Output Diodes Removal and Replacement To Replace ANY of the Output Diodes D1, D2, D3 or D4 Output Diodes Removal and ReplacementOutput Transistor Removal and Replacement Figure F.36 Output Transistor Location Output Transistor Removal and ReplacementPlug CN1 5mm Allen Bolts Invertec V205-T AC/DC Table of Contents Diagram Section ELECTriCaL DiaGramS