Using The Hot Swap Injector/Ejector Handles - Nera WiLink-I Series System Manual

Chapter 2 - Installation Guidelines
Name Description
HOT SWAP NPU readiness for hot-swap
removal
2.2.9

Using the Hot Swap Injector/Ejector Handles

The Base Station modules include special handles for high-force
insertion/extraction of modules. Each of the 6U high modules (NPU, AU-IDU)
includes two such handles, whereas each of the 3U high-modules (PIU, PSU)
includes a single handle at the bottom of the front panel.
The bottom injector/ejector handle of the NPU and AU-IDU modules includes a
micro-switch to support hot-swap control. Second generation PIU modules also
support hot-swap, as indicated by the HOT SWAP blue LED.
2.2.9.1 Inserting Modules
To insert a module with hot-swap support (NPU, AU-IDU, PIU):
Firmly push in the module into its intended slot (slot 5 for the NPU, slot 1-4,
1
7-9 for AU-IDU).
Press the handles up (the upper handle if available)/down (the lower handle)
2
simultaneously until you hear the locking click and the red buttons are
released. The blue HOT SWAP LED will briefly turn on (only in AU and NPU),
indicating that the module is being powered up.
CAUTION
In a PIU with HOT SWAP LED, connect power to the PIU only after it is fully inserted into the
chassis.
Secure the module in place by closing the screws at the top and bottom of the
3
front panel.
44
Table 2-13: NPU LEDs
Functionality
¢
Off: Power to the module is not disconnected, the NPU
is not ready for removal
¢
Blue: Power to the module can be disconnected and
the NPU can be safely removed
For instructions on using the HOT SWAP handles refer to
Section 2.2.9
.
Installation