Maintenance For The 7-Slot Chassis; Routine Maintenance - 3Com 3CB9E7 - CoreBuilder 9000 Chassis Switch Getting Started Manual

M
AINTENANCE FOR THE
7
This chapter describes the routine maintenance to
perform to keep your CoreBuilder
Switch 7-slot chassis working at 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.
® 9000 Enterprise
7-S C
LOT HASSIS
This section provides information about the
CoreBuilder 9000 Enterprise Switch 7-slot chassis and
contains the following topics:

Routine Maintenance

Removing and Replacing a Power Supply
Removing and Replacing a Fan Tray
Routine Maintenance
On a regular basis, inspect your 7-slot chassis to verify
that:
All blank faceplates are securely attached to the
chassis.
The fan tray is running.
CAUTION: The CoreBuilder 9000 7-slot Switch
sends a fan fault message when one fan fails in the
fan tray. However, the Switch can continue to run if
one fan fails in the fan tray. If a second or third fan
fails, in that 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 7-slot Switch with all four
fans operating in the fan tray.
Ventilation to the Switch is unobstructed.
All modules are securely seated in the backplane
and firmly attached to the chassis.