Maintaining The Ethernet Module; Preventive Maintenance; Replacing The Ethernet Module - 3Com NETBUILDER II Installation Manual

Maintaining the
Ethernet Module

Preventive Maintenance

Replacing the
Ethernet Module
This section describes preventive maintenance you can take and how to replace the
Ethernet module.
3Com recommends the following procedures for preventive maintenance:
Observe the guidelines listed in the NETBuilder II Base System Installation Guide for
minimum and maximum electrical and environmental requirements.
Keep the area around the NETBuilder II base system clean; avoid accumulated dust.
Allow sufficient air space around the NETBuilder II base system for proper ventilation,
so that the module is protected from excessively high temperatures.
Observe ESD guidelines whenever handling the Ethernet module.
Refer to the NETBuilder II Base System Installation Guide for preventive maintenance tips
that apply to the entire system.
If any component in the Ethernet module fails, you will need to replace the entire
module. The Ethernet module is hot-swappable, which means that you can safely
remove and install a new one without powering down or rebooting the NETBuilder II
base system.
To replace a module, follow these steps:
To perform the following procedure, you may need a small, flathead screwdriver.
1 Disconnect any network cabling from the Ethernet module, and remove the cable
from the strain relief bracket (you do not need to remove the bracket itself.)
2 Loosen the two captive screws securing the board in the slot, by hand or with a
flathead screwdriver.
3 Release the ejector handles on both sides of the Ethernet module by pressing on them
firmly and evenly until they are in an open position.
The Ethernet module will disengage from the NETBuilder II backplane and partially
eject from the slot.
4 Carefully slide the failed Ethernet module out of the slot.
5 Follow the procedures outlined in Chapter 2 to install a new Ethernet module.
CAUTION: All empty slots require blanking plates to maintain proper cooling of the
unit. Failure to replace a removed module with a blanking plate or another module
may cause unit failure and will void the warranty. If no blanking plate or other module
is available, reinsert the failed module until a replacement is obtained.
6 Perform any software configuration or system restart as detailed in the NETBuilder
Series Bridge Operation Guide or NETBuilder Series Bridge/Router Operation Guide.
Although the Ethernet module can be added, removed, or replaced while the
NETBuilder II system is operating, you may need to reconfigure the software or restart
the system before the Ethernet module becomes functional.

Maintaining the Ethernet Module

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