Juniper MX2020 Hardware Manual page 450

MX2020 3D Universal Edge Router Hardware Guide
surges...............................................................................382
system
specifications........................................................357
power distribution module
reinstalling
after chassis installation..................................100
power distribution modules
cables See DC power
removing
before chassis installation.................................87
power midplane......................................................................20
description........................................................................20
functions...........................................................................20
power subsystem
AC electrical specifications.....................................369
DC electrical specifications......................................357
troubleshooting............................................................202
power supply module
LEDs
on the craft interface............................................37
removing
before chassis installation................................88
power supply modules
reinstalling
after chassis installation....................................101
powering off the router...............................................131,
powering on the router...............................................129,
product disposal warning.................................................335
provisioning
AC power.........................................................................377
DC power........................................................................365
PSM
LEDs.............................................................................48,
PSM air filter
installing..........................................................................225
removing..........................................................................222
Q
qualified personnel warning.............................................318
R
rack
clearance around, required..........................................71
front-mount flange hole
securing to building.......................................................70
size and strength required..........................................69
standards, EIA and ETSI.............................................69
rack mounting
shelves................................................................................19
424
138
136
53
spacing.............................70
rack mounting warning.......................................................323
radiation warning.................................................................330
radio frequency interference,
ramp warning.........................................................................327
redundancy..................................................................................6
reinstalling
ADCs
after chassis installation..................................105
CB-REs
after chassis installation...................................107
lower fan tray
after chassis installation...................................103
MPC
after chassis installation..................................106
power distribution module
after chassis installation..................................100
power supply modules
after chassis installation....................................101
SFB
after chassis installation..................................104
upper fan tray
after chassis installation...................................103
relative humidity, acceptable...........................................355
removal instructions
alarm relay contact wires..........................................215
cable
MIC...........................................................................258
MPC.........................................................................258
CB-RE...............................................................................232
craft interface.................................................................215
MPC with ADC
before chassis installation.................................93
MPC without ADC
before chassis installation.................................94
MPCs from ADCs.........................................................244
MPCs with ADCs..........................................................243
SFB....................................................................................236
before chassis installation.................................92
SFP....................................................................................262
transceiver......................................................................262
XFP....................................................................................262
removing
AC power supply module..........................................301
ADCs.................................................................................246
air baffle...........................................................................221
CB-REs
before chassis installation.................................95
DC cable manager......................................................309
DC power distribution module.....................264,
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preventing....................382
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