Allied Telesis Network Service Module AR040-48 - Manual (Page 7)

Quick Install Guide 7
C613-04019-01 REV J
Follow these steps to hot swap an NSM.
1. Prepare the NSM bay for hot swap
If the In Use LED (next to the NSM bay) is lit, use a pencil tip or similar
object to press the recessed Hot Swap button. The In Use LED should go
out and the Swap LED should light.
If the In Use LED remains lit or if neither the In Use or Swap LED are lit,
the software release does not support hot swapping, and the Standard
Installation Method must be used.
Do not attempt to hot swap while the contents of Flash are being modified; for
instance, during Flash compaction or when files are being loaded onto the
switch or router. If the switch or router crashes while Flash is being modified,
configuration files, software release files, feature licences and other files may be
damaged.
2. Prepare the NSM
In an antistatic environment, remove the NSM from its packing material.
Be sure to observe ESD precautions.
Do not attempt to install an NSM without observing correct antistatic
procedures. Failure to do so may damage the switch, router, or NSM. If you are
unsure what the correct procedures are, contact your authorised Allied Telesis
distributor or reseller.
3. Remove the switch or router NSM-bay face-plate or existing NSM
If the switch or router does not have an NSM installed, remove the blank
NSM-bay face-plate by loosening the two M4 Phillips screws. See Figure 3
on page 5.
If an NSM is already installed, disconnect its network cables and TNV lines
before removing it from the switch or router.
Remove the NSM by unscrewing both thumbscrews at the same time. As
the thumbscrews are turned, they will push the NSM out of the bay.
If the NSM has extractor levers, moving them to the open position will
assist the removal process (Figure 2 on page 5).
When removing an NSM, take care to turn each thumbscrew by an equal
amount to ensure the NSM does not become misaligned. Forcing a jammed
thumbscrew may damage the NSM.
If a thumbscrew becomes tight, it must not be forced. Instead, screw it in or
out slightly to loosen it and then try again, taking care to unscrew both
thumbscrews at the same rate.
Keep the face-plate for future use. If you remove an NSM, replace the face-plate to
prevent dust and debris from entering the switch or router and to maintain proper
airflow.