Polycom DOC2559A - Manual (Page 57)

Polycom RMX 4000 Hardware Guide
2-11
5 Open the filter tray, by unscrewing two screws on the tray.
6 Insert the air filter into the filter tray.
7 Close the filter tray, by tightening the two screws on the tray.
8 Insert and slide in the Fan drawer.
9 Push the Fan drawer firmly into the Backplane, making sure it is
properly seated in its slot.
10 Tighten the captive screws on the front panel of the Fan drawer to the
chassis.
11 Turn ON the RMX 4000.
Replacing an Faulty MPM+/MPMx Card
Removing the MPM+/MPMx Card from the MCU
All MPM+/MPMx cards can be installed or removed while the RMX 4000
is powered on and operating.
Prior to removing an MPM+/MPMx card the captive screws must be
unscrewed and the ejector levers must be opened to initiate a “power
down” on the card.
It is recommended that the air filter be replaced or cleaned every six months.
On the RMX 4000 when upgrading from MPM/MPM+ to MPMx on the RTM-IP
4000 all connections require Ferrite cables.