Installing the MX960 AC High-Capacity Power Supplies
NOTE: During the upgrade process, you can simultaneously run existing and
high- capacity power supplies. However, it is recommended to upgrade all
power supplies to high-capacity power supplies.
To install an AC power supply (see Figure 13 on page 16):
1. Move the AC input switch in the chassis above the empty power supply slot to the off
(O) position.
2. Ensure that the release lever below the empty power supply slot is locked in the
counterclockwise position (see Figure 13 on page 16).
If necessary, pull the spring-loaded locking pin in the release lever away from the
chassis and turn the release lever counterclockwise until it stops. Let go of the locking
pin in the release lever. Ensure that the pin is seated inside the corresponding hole in
the chassis.
3. Using both hands, slide the power supply straight into the chassis until the power
supply is fully seated in the chassis slot. The power supply faceplate should be flush
with any adjacent power supply faceplates.
The small tab on the metal housing that is controlled by the release lever must be
inside of the corresponding slot at the bottom of the power supply (see Figure 20 on
page 26). This tab is used to pull the power supply down in the chassis slot, prior to
removing the power supply.
4. While firmly pushing the handle on the power supply faceplate with one hand, use
your other hand to pull the spring-loaded locking pin in the release lever away from
the chassis and turn the release lever clockwise until it stops.
5. Let go of the locking pin in the release lever. Ensure that the pin is seated inside the
corresponding hole in the chassis.
6. Move the AC input switch in the chassis above the power supply to the on (—) position
and observe the status LEDs on the power supply faceplate. If the power supply is
correctly installed and functioning normally, the AC OK and DC OK LEDs light steadily,
and the PS FAIL LED is not lit.
25Copyright © 2010, Juniper Networks, Inc.
Installing the MX960 AC High-Capacity Power Supplies
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