Installing An M40E Dc Power Supply; Figure 120: Removing A Dc Power Supply; Figure 121: Rear Of Dc Power Supply Showing Midplane Connectors - Juniper M40E Hardware Manual

Copyright © 2010, Juniper Networks, Inc.
All manuals and user guides at all-guides.com

Figure 120: Removing a DC Power Supply

Figure 121: Rear of DC Power Supply Showing Midplane Connectors

Installing an M40e DC Power Supply

To install a DC power supply (see Figure 122 on page 218):
Verify that there is no power flowing to the power supply from the external power
1.
source, so that the voltage across the leads of the power cables is 0 V. Ensure that
there is no chance that the cable leads might become active during the procedure.
Verify that the power switch for the power supply (located on the circuit breaker box)
2.
is in the ( ) position.
OFF O
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
3.
the strap to one of the ESD points on the chassis. For more information about ESD,
see "Preventing Electrostatic Discharge Damage to an M Series, MX Series, or T Series
Router" on page 232.
Place one hand under the power supply and grasp a handle on the faceplate with the
4.
other hand. Slide the power supply into the chassis until it contacts the midplane.
Starting with the bottom screws, tighten (but do not overtighten) the thumbscrew
5.
at each corner of the power supply faceplate.
Press the switch on the corresponding circuit breaker to the
6.
that on the power supply faceplate the green LED labeled
blue LED labeled
OUTPUT OK
LED labeled does not light.
CB OFF
Chapter 16: Replacing M40e Hardware Components
blinks momentarily, then lights steadily, and the yellow
( ) position. Verify
ON |
lights steadily, the
CB ON
217