Rockwell Automation 1770-M12 Mass Storage Systems - Manual (Page 38)

Chapter
5
5Ć1
Troubleshooting Your System
In this chapter you will find:
general troubleshooting aids for each mass storage system.
troubleshooting aids specific to the 1770–M11 system
troubleshooting aids for the disk controller module located inside the mass
storage systems
Symptom Probable Cause Recommended Action
POWER indicator does
not light.
Burned out LED
Power cable not properly connected.
Failure with the power supply.
Call your Allen-Bradley sales engineer or
distributor.
Connect power cable.
Test for a 12V reading with a voltmeter.
Winchester disk or
micro-floppy disk
indicators does not light.
Burned out LED
Failure with an internal component (Winchester
disk, power supply, or SCSI).
Call your Allen-Bradley sales engineer or
distributor.
Call your Allen-Bradley sales engineer or
distributor.
Micro-floppy will not eject
after pressing the eject
pushbutton.
Mechanical failure Call your Allen-Bradley sales engineer or
distributor.
Fan does not operate Power supply failure.
Mechanical failure with the fan
Test for a 12V reading with a voltmeter.
ATTENTION: : Always operate the mass storage system(s) with
the metal cover on. Operating a mass storage system with the cover
off could cause loss of data due to inadequate shielding.
Chapter Objectives
General Troubleshooting Aids