Nera WILINK I System Manual page 56

Chapter 2 - Installation Guidelines
2.2.9.2 Ejecting Modules
To eject a module with hot-swap support (NPU, AU-IDU, new PIU):
1 Release the screws at the top and the bottom of the front panel.
2 Press the handles' red button until the handles are unlocked.
3 Wait until the blue HOT SWAP LED turns on, indicationg that the module has
been disconnected and can be removed.
CAUTION
In a PIU with HOT SWAP LED, disconnect power from the PIU module only after it is taken out
from the chassis (or after the HOT SWAP LED is turned on).
4 Press the handles down (the upper handle)/up (the lower handle) until the
module is unlocked, firmly hold the handles and take the module out of the
chassis.
To eject a PSU or a PIU without HOT SWAP support:
CAUTION
In a PIU without HOT SWAP LED, disconnect power from the PIU module before ejecting it from
the chassis. Before disconnecting the power cable from the PIU, the power source must be
disconnected to avoid irreversible damage due to a potential excessively high transient current.
1 Release the screw at the top of the front panel.
2 Press the handle's red button until the handle is unlocked.
3 Press the handle up until the module is unlocked, firmly hold the handle and
take the module out of the chassis.
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WILINK I MODULAR BASE STATION SYSTEM MANUAL