Installation guide

Acme Packet 6100 Hardware Installation and Maintenance Guide 71
NIU Removal and Replacement
Prior to removing an NIU, the platform in which it is installed must be in
standby before powering down the chassis and removing the NIU. The
following procedure describes how to remove an NIU.
Caution Make sure you are properly grounded with an ESD strap before
removing the NIU.
NIU Removal To remove an NIU:
1. Ensure that the Acme Packet 6100 on which the NIU is being replaced is in
sta
ndby mode by following the steps described elsewhere in this
document.
2. Set the System Power switch to S
TBY to power down the chassis.
3. Unplug all network and management cables from the NIU you plan to
remove
from the Acme Packet 6100.
4. Using a #2 Phillips screwdriver, un
screw the two captive thumbscrews
located on each side of the NIU. The screws are spring-loaded and will
push forward, but they will not fall out of the NIU.
Mgmt 2Mgmt 1Mgmt 0USBAlarmConsole
System
Power
On
Stby
Stby
Dis
LINK ACT LINK ACT
PWR H/S
Figure 6 - 97. Loosening NIU Captive Thumbscrews
5. Pivot the two ejection levers outward at the same time, pulling the card out
of its connection to the motherboard and away from the system chassis.
This action disengages the NIU from the system, severing all electrical
contact to the processing unit.
Figure 6 - 98. Pivoting the Ejection Levers