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M
AINTAINING THE
5
This chapter describes the routine maintenance to
perform to keep your Switch 4007R 8-slot chassis
working its best. This chapter also provides
instructions for replacing power supplies and fan
trays.
WARNING: Only trained electrical service personnel
should perform Switch connections and
disconnections.
WARNING: Hazardous energy levels exist inside of
the chassis. Do not place hands or objects into the
Switch or touch components on an inserted module.
There are no user-serviceable parts on either the
load-sharing power supplies or on the fan trays. If
these components fail, remove them as described in
this chapter and return them to your supplier. Keep
replacement power supply units and fan trays at your
site so that they are available if needed.
This chapter contains the following topics:
Routine Maintenance
I
Removing and Replacing a Power Supply
I
Removing and Replacing a Fan Tray
I
S
4007R
WITCH
Routine Maintenance
On a regular basis, inspect your Switch 4007R chassis
to verify that:
All blank faceplates are securely attached to the
I
chassis.
Two fans trays are running in the 8-slot chassis.
I
CAUTION: The Switch 4007R 8-slot send a trap
message and can continue to run if one fan fails in
one fan tray. However, if a second or third fan fails,
in that same fan tray, no trap message is
generated. Replace the fan tray within 48 hours of
receiving the trap message or contact your service
representative. Run the Switch with a full
complement of fan trays.
Ventilation to the Switch is unobstructed.
I
All modules are securely seated in the backplane
I
and firmly attached to the chassis.
Module LEDs are functioning normally and show
I
normal readings.
Power requirements for all installed modules are
I
met by the power supplies.
Power cords from each power supply are not
I
frayed or damaged.
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