Справочник Пользователя для Lincoln Electric SVM160-B

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Section F-1

Section F-1

POWER MIG 300

Troubleshooting & Repair Section

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Section F

How to Use Troubleshooting Guide .......................................................................................F-2

PC Board Troubleshooting Procedures .................................................................................F-3

Troubleshooting Guide ................................................................................................F-4 - F-11

Chopper Board Capacitor Discharge Procedure ..........................................................F-12

Main Transformer Test ..................................................................................................F-14

Chopper Board Test ......................................................................................................F-16

Control Rectifier Test .....................................................................................................F-19

Output Rectifier Assembly Test ....................................................................................F-21

Wire Drive Motor and Tachometer Feedback Test .......................................................F-23

Encoder PC Board Test (10562 & Above).....................................................................F-26

Current Transducer Test ................................................................................................F-29

Power Mig Scrolling Dashes Test..................................................................................F-32

Oscilloscope Waveforms......................................................................................................F-34

Removal and Replacement Procedures ..............................................................................F-36

Motor & Gear Box Removal and Replacement .............................................................F-36

Output Rectifier Removal and Replacement .................................................................F-40

Chopper Board Assembly Removal and Replacement .................................................F-43

Main Transformer and Output Choke Removal and Replacement ...............................F-46

Fan Motor Assembly Removal and Replacement .........................................................F-50

Voltage & Current Calibration Procedure ......................................................................F-52

Retest after Repair...............................................................................................................F-57

TABLE OF CONTENTS

TROUBLESHOOTING & REPAIR SECTION