Juniper MX960 Hardware Manual page 424

3. Ensure that the release lever below the empty power supply slot is locked in the counterclockwise
position (see Figure 148 on page
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.
4. 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
pull the power supply down in the chassis slot, prior to removing the power supply.
5. 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.
6. Let go of the locking pin in the release lever. Ensure that the pin is seated inside the corresponding
hole in the chassis.
7. 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.
412).
Figure 148 on page 412). This tab is used to
411