![Juniper M40e Скачать руководство пользователя страница 245](http://html1.mh-extra.com/html/juniper/m40e/m40e_hardware-manual_2032508245.webp)
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):
1.
Verify that there is no power flowing to the power supply from the external power
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.
2.
Verify that the power switch for the power supply (located on the circuit breaker box)
is in the
OFF
(
O
) position.
3.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
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.
4.
Place one hand under the power supply and grasp a handle on the faceplate with the
other hand. Slide the power supply into the chassis until it contacts the midplane.
5.
Starting with the bottom screws, tighten (but do not overtighten) the thumbscrew
at each corner of the power supply faceplate.
6.
Press the switch on the corresponding circuit breaker to the
ON
(
|
) position. Verify
that on the power supply faceplate the green LED labeled
CB ON
lights steadily, the
blue LED labeled
OUTPUT OK
blinks momentarily, then lights steadily, and the yellow
LED labeled
CB OFF
does not light.
217
Copyright © 2010, Juniper Networks, Inc.
Chapter 16: Replacing M40e Hardware Components
All manuals and user guides at all-guides.com