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DUA1800-0AAA04
Spot Checks 5-3
Management Module.
Check that the Management Module is
secure in position.
If you discover a problem, refer to
Fault Diagnosis Using The LEDs
on page 5-4 and
Obtaining Help
on page 5-5.
Cleaning
It is important that the MSH, and the environment in which the
MSH is sited, is kept clean. This will prevent the accumulation of
dust around components, drawn in by the cooling fans.
Make sure that you keep the filter in the thermal management
unit free from blockage by cleaning it regularly; refer to
Installing
The Thermal Management Unit
on page 2-18 for further
information.
When cleaning the acrylic screen covering the diagnostic LEDs use
an anti-static cleaning agent.
Removing And Replacing Equipment
Inserting additional modules or a second power supply unit into
an
active
MSH (known as
hot insertion
) will not cause any
damage to your equipment. However, it should be noted that
there is a small possibility that data passing through the unit at
the time of insertion can be corrupted. Most network protocols
will transparently recover from any errors if this happens.
Hot insertion or removal of modules and/or PSUs may result in
code corruption in modules which contain microprocessors (e.g.
management/bridge modules). In the unlikely event that this
occurs, reset the chassis by simultaneously pressing the Reset and
Enter buttons located on the front panel. All modules in the
chassis will be resume normal operation using the stored MSH
configuration settings.
Chassis.bk : CHAPTER5 Page 3 Monday, February 10, 1997 1:11 PM