Lincoln Electric IM526-B manual Next Step Test Conclusion Repair Action Check Result

Page 18

 

 

 

 

 

Next

 

Step

Test

 

Test

Conclusion

Test

Repair Action

Check

Result

Step

5

Snubber

Lead 401 to terminal

25 ohms

OK

cont

 

 

Resistors

12

 

 

 

 

 

>30 ohms

R4 open

 

Replace R4

 

 

 

 

 

 

 

<20 ohms

R4 shorted

 

 

 

 

 

 

 

 

 

 

Disconnect leads

 

25 ohms

OK

cont

 

 

401, 402, 403 and

Lead 402 to terminal

 

 

 

 

 

 

 

 

 

 

404 from Switch

9

>30 ohms

R5 open

 

Replace R5

 

PC Board

 

<20 ohms

R5 shorted

 

 

 

 

 

 

 

 

 

 

 

 

25 ohms

OK

cont

 

 

 

 

 

 

 

 

 

 

Lead 403 to terminal

>30 ohms

R6 open

 

 

 

 

12

<20 ohms

R6 shorted

 

Replace R6

 

 

 

 

 

 

 

 

 

 

25 ohms

OK

cont

 

 

 

 

 

 

 

 

 

 

 

>30 ohms

R7 open

 

Replace R7

 

 

Lead 404 to terminal

<20 ohms

R7 shorted

 

 

 

 

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

<100 ohms

Shorted output

 

Test individually

6

Output diodes

 

 

diode D1 thru

 

 

 

 

+ output plug (pos)

 

D12

 

 

 

 

to

 

 

 

 

 

 

 

Output diodes OK

 

 

 

Remove output

- output plug (neg)

>200 ohms

 

 

 

 

 

 

 

 

 

load

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con- tact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

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Contents Safety Depends on You INVERTECV300-PRODecember,1999Electric Shock can kill Electric and Magnetic Fields Précautions DE Sûreté Table of Contents Please Examine Carton and Equipment For Damage Immediately Specifications InstallationProduct Description LN-25 Connection Instructions Single Phase InputThree Phase Input LN-7 Connection InstructionsRemote Control of Invertec Parallel OperationK900-1 DC TIG Starter Connection LN-9 GMA Connection Instructions Output CablesQuick Disconnect Plugs Mode Switch Operating InstructionsOutput Terminals Switch Arc Force / Inductance ControlAuxiliary Power MaintenanceMeter Polarity Switch Capacitor Discharge ProcedurePeriodic Maintenance TroubleshootingTroubleshooting Guide Trouble What To DoTest Procedures Next Test Step Check Result Conclusion Repair ActionNext Test Next Step Test Conclusion Repair Action Check Result Next Step Test Switch PC Board Replacement Procedure Matched PartsTest After Repair Component to Heat Sink Replacement of Power Modules and Output DiodesPrinted Circuit Board Replacement Component Torque ±10%Remote Control Adapters P O W E R S O U R C EK867 Universal Adapter for 14-PIN Wire Feeder Receptacle Installation I N S T R U C T I O N SB L E T I O N a L O N T R O LP H E N O L R K A R E V E R T E C W E R S O U R C EN N E C T T O G E T H E R F O R L D I N G O U T P U T V E R T E CT U S E D O N I N V E R T E C M O T E O U T P U T C O N T R O LP H E N O L R K N T R O L C a B L EP H E N O L N T R O LE C T R O D E C a B L E N D a M P T R O LK900-1 DC TIG Starter Connection Diagram R C HLN-9 GMA with K596 Cable to Invertec Connection Diagram E C T R O D E C a B L E Wiring Diagram V300-PRO Code 10256, V300-I Code Wiring Diagram V300-PRO Code 10257 Invertec V300-PRO Invertec V300-PRO Invertec V300-PRO How To Read Shop Drawings $700.00Precaucion Warnung
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