Installing A Power Supply - Cabletron Systems 9000 Installation Manual

Installing the 9Cx14 Chassis

Installing a Power Supply

At least one power supply must be installed on the rear of the MMAC-Plus
chassis. Additional power supplies can be added to achieve redundancy.
A power supply is installed by plugging it into either the left or right power
supply connector on the SmartSwitch 9000 chassis, as shown in Figure 1-3.
Install a power supply by following the steps below:
1. Unpack the power supply by removing it from the shipping box and sliding
the two foam end caps off the unit. (Save the shipping box and packing
materials in the event the power supply must be reshipped.)
2. Remove the power supply from the protective plastic bag. (Save the bag in the
event the power supply must be reshipped.)
3. Examine the power supply carefully, checking for damage. If any damage
exists, DO NOT install the power supply. Immediately contact Cabletron
Systems Technical support.
4. Loosen and remove the two screws from one of the power supply connector
covers on the rear of the MMAC-Plus chassis.
5. Remove the cover. (Keep the cover in the event you need to remove the power
supply. The cover must be replaced to protect the connector.)
6. Hold the power supply by the handles on the top and bottom of the unit and
do the following:
a. Align the power supply so that the lip on the bottom and the hook on the
top are slightly above the corresponding slots on the chassis.
b. Ease the power supply down until the hook catches the slot on the top and
the tab is inserted in the slot on the bottom.
c. Plug the power supply into the corresponding connector on the back of
the chassis by pushing the power supply until its frame touches the
surface of the MMAC-Plus chassis. Do not force the power supply in
place. If significant resistance is encountered before the frame is flush with
the chassis, remove the power supply, realign it, and push it in again.
d. Secure the power supply to the chassis by tightening the four screws on
the top and bottom of the power supply. For proper chassis grounding,
the four slotted screws must be properly tightened.
7. If you are installing a second power supply, repeat steps 1–6.
1-8