Replacing An Mx2020 Three-Phase Delta Ac Power Cord; Removing An Mx2020 Three-Phase Delta Ac Power Cord - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
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Replacing an MX2020 Three-Phase Delta AC Power Cord

Removing an MX2020 Three-Phase Delta AC Power Cord

504
WARNING: Do not look directly into a fiber-optic transceiver or into the
ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable
connected to a transceiver emit laser light that can damage your eyes.
Verify that the status LEDs on the component faceplate indicate that the SFP or XFP
8.
is functioning correctly. For more information about the component LEDs, see the
Series Interface Module Reference
Preventing Electrostatic Discharge Damage to an MX2020 Router on page 558
Replacing an MX2020 MIC on page 477
Replacing an MX2020 MPC on page 485
The MX2020 router has either one redundant PDM or two redundant PDMs. An AC power
cord on a redundant PDM is hot-insertable and hot-removable. When a redundant PDM
is powered down, the other PDM automatically assumes the entire electrical load for the
router. If you have only one PDM, you must power off the system before removing the
AC power cord.
Removing an MX2020 Three-Phase Delta AC Power Cord on page 504
1.
Installing an MX2020 Three-Phase Delta AC Power Cord on page 507
2.
To remove a three-phase delta AC power cord:
Switch off the customer site circuit breakers to the PDM being removed. Make sure
1.
that the voltage across the AC power source cord is 0 V and that there is no chance
that the cord might become active during the installation process.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Switch the power switch on the PSM faceplate to the off (
3.
NOTE: After powering off a PSM, wait at least 60 seconds before turning
it back on.
Remove the ESD grounding strap from the ESD point on the chassis, and attach it to
4.
an approved site ESD grounding point. See the instructions for your site.
Disconnect the AC power cord (see
5.
.
Figure 238 on page 505) from the power source.
Copyright © 2015, Juniper Networks, Inc.
MX
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