Installing An Mx960 Dc Power Supply - Juniper MX960 Hardware Manual

Installing an MX960 DC Power Supply

WARNING:
from the DC circuit. To ensure that all power is off, locate the circuit breaker on the
panel board that services the DC circuit, switch the circuit breaker to the off position,
and tape the switch handle of the circuit breaker in the off position.
To install a DC power supply (see
1. Ensure that the voltage across the DC power source cable leads is 0 V and that there is no chance that
the cable leads might become active during installation.
2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other
end of the strap to the ESD point on the chassis.
3. Move the DC circuit breaker on the power supply faceplate to the off (O) position.
4. Ensure that the release lever below the empty power supply slot is locked in the counterclockwise
position (see Figure 151 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.
5. 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.
6. 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.
7. Let go of the locking pin in the release lever. Ensure that the pin is seated inside the corresponding
hole in the chassis.
8. Remove the clear plastic cover protecting the terminal studs on the faceplate.
9. Remove the nut and washer from each of the terminal studs.
Before performing DC power procedures, ensure that power is removed
Figure 151 on page
418).
418):
Figure 151 on page 418). This tab is used to
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