Juniper T640 Installation instructions

T640 Core Router Hardware Guide
Modified: 2017-03-31
Copyright © 2017, Juniper Networks, Inc.

Juniper Networks, Inc.
1133 Innovation Way
Sunnyvale, California 94089
USA
408-745-2000
www.juniper.net
Copyright © 2017, Juniper Networks, Inc. All rights reserved.
Juniper Networks, Junos, Steel-Belted Radius, NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. in the United
States and other countries. The Juniper Networks Logo, the Junos logo, and JunosE are trademarks of Juniper Networks, Inc. All other
trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.
Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify,
transfer, or otherwise revise this publication without notice.
T640 Core Router Hardware Guide
Copyright © 2017, Juniper Networks, Inc.
All rights reserved.
The information in this document is current as of the date on the title page.
YEAR 2000 NOTICE
Juniper Networks hardware and software products are Year 2000 compliant. Junos OS has no known time-related limitations through the
year 2038. However, the NTP application is known to have some difficulty in the year 2036.
END USER LICENSE AGREEMENT
The Juniper Networks product that is the subject of this technical documentation consists of (or is intended for use with) Juniper Networks
software. Use of such software is subject to the terms and conditions of the End User License Agreement (“EULA”) posted at
http://www.juniper.net/support/eula.html. By downloading, installing or using such software, you agree to the terms and conditions of
that EULA.
Copyright © 2017, Juniper Networks, Inc.ii

Table of Contents
AbouttheDocumentation...........................................xxix
Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxix
Supported Platforms ...........................................xxix
DocumentationConventions.....................................xxix
Documentation Feedback.......................................xxxi
RequestingTechnicalSupport...................................xxxii
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . xxxii
OpeningaCasewithJTAC...................................xxxii
Part 1 Overview
Chapter 1 System Overview and Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
T640RouterDescription..............................................3
T640ComponentRedundancy.........................................4
T640SystemArchitectureDescription...................................5
T640RoutingEngineFunctions........................................5
T640 Packet Forwarding Engine Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
DataFlowThroughtheT640Router.....................................7
Chapter2 T640RouterReleaseNotes.........................................11
Outstanding Issues with the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Errata with the T640 Router Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 3 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
T640HardwareComponentOverview..................................13
T640ChassisDescription............................................15
T640MidplaneDescription...........................................17
T640 Cable Management System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
T640 Connector Interface Panel (CIP) Description . . . . . . . . . . . . . . . . . . . . . . . . 19
CIPComponents................................................19
ManagementPorts..............................................20
AlarmRelayContacts............................................21
T640 Connector Interface Panel (CIP) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
T640CraftInterfaceDescription.......................................22
T640 Craft Interface Alarm LEDs and ACO/LT Button . . . . . . . . . . . . . . . . . . . . . . 23
T640 Craft Interface FPC LEDs and Online/Offline Buttons . . . . . . . . . . . . . . . . . 24
T640 Craft Interface Host Subsystem LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
T640 Craft Interface LCD and Navigation Buttons . . . . . . . . . . . . . . . . . . . . . . . . . 25
T640CraftInterfaceSIBLEDs........................................26
T640 SONET Clock Generators (SCGs) Description . . . . . . . . . . . . . . . . . . . . . . . 27
T640 SONET Clock Generators (SCGs) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
iiiCopyright © 2017, Juniper Networks, Inc.

Chapter 4 Cooling System Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 31
T640CoolingSystemDescription......................................31
Airflow ........................................................31
FanTrays......................................................32
AirFilters......................................................33
PowerSupplyCoolingSystem.....................................33
Chapter 5 Host Subsystem Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . 35
T640HostSubsystemDescription.....................................35
T640RoutingEngineDescription......................................36
T640RE-600Description............................................37
T640RE-600LEDs.................................................39
T640RE-1600Description...........................................39
T640RE-1600LEDs.................................................41
T640RE-C1800Description..........................................42
RE-C1800Components..........................................42
RE-C1800BootOrder............................................42
T640RE-C1800LEDs...............................................43
T640RE-2000Description..........................................44
T640RE-2000LEDs................................................45
RoutingEngineSpecifications.........................................46
SupportedRoutingEnginesbyRouter..................................49
M7iRoutingEngines.............................................50
M10iRoutingEngines............................................50
M40eRoutingEngines............................................51
M120RoutingEngines............................................51
M320RoutingEngines............................................51
MX5, MX10, MX40, and MX80 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . 52
MX104RoutingEngines..........................................52
MX240RoutingEngines..........................................53
MX480RoutingEngines..........................................53
MX960RoutingEngines..........................................54
MX2008RoutingEngines.........................................55
MX2010RoutingEngines.........................................55
MX2020 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
PTX3000RoutingEngines........................................56
PTX5000RoutingEngines........................................57
T320RoutingEngines............................................57
T640RoutingEngines...........................................58
T1600RoutingEngines..........................................58
T4000RoutingEngines..........................................59
TXMatrixRoutingEngines........................................60
TXMatrixPlusRoutingEngines....................................60
TX Matrix Plus (with 3D SIBs) Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . 61
T640LCC-CBDescription............................................61
T640LCC-CBLEDs.................................................62
T640 Standard Control Boards Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
T640StandardControlBoardsLEDs...................................64
T640 T Series Control Boards (T-CBs) Description . . . . . . . . . . . . . . . . . . . . . . . 64
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T640 Core Router Hardware Guide

T640 T Series Control Boards (T-CBs) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Chapter 6 Line Card Components and Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
T640FPCDescription...............................................67
FPCTerminology................................................68
IdentifyingT640FPCs...........................................69
T640FPCsSupported...............................................77
T640PICDescription................................................79
T640PICsSupported...............................................80
T640End-of-LifePICsSupported.....................................87
T640PIC/FPCCompatibility.........................................89
PIC/FPC Compatibility (Type 1 FPCs and Type 1 PICs) . . . . . . . . . . . . . . . . . . 89
PIC/FPC Compatibility (Type 2 FPCs and Type 2 PICs) . . . . . . . . . . . . . . . . . 90
PIC/FPC Compatibility (Type 3 FPCs and Type 3 PICs) . . . . . . . . . . . . . . . . . 92
PIC/FPC Compatibility (Type 4 FPCs and Type 4 PICs) . . . . . . . . . . . . . . . . . 93
Chapter 7 Power System Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 95
T640PowerSystemDescription......................................95
T640 Two-Input 160-A DC Power Supply Description . . . . . . . . . . . . . . . . . . . . . 96
Two-Input160-ADCPowerSupply.................................96
Two-Input 160-A DC Power Supply Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Two-Input 160-A DC Power Supply Load Sharing and Fault Tolerance . . . . . 97
T640 Two-Input 160-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
T640 Three-Input 240-A DC Power Supply Description . . . . . . . . . . . . . . . . . . . . 99
Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Three-Input 240-A DC Power Supply Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Three-Input 240-A DC Power Supply Load Sharing and Fault Tolerance . . 100
T640 Three-Input 240-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . 100
T640 Four-Input 240-A DC Power Supply Description . . . . . . . . . . . . . . . . . . . . 102
Four-Input240-ADCPowerSupply................................102
Four-Input 240-A DC Power Supply Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Four-Input 240-A DC Power Supply Load Sharing and Fault Tolerance . . . . 103
T640 Four-Input 240-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 103
T640 Six-Input DC Power Supply Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
PowerSupplyComponents......................................104
Inputs........................................................105
Redundancy...................................................105
T640 Six-Input DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
T640 Three-Phase Delta and Wye AC Power Supply Description . . . . . . . . . . . . 106
Three-Phase Delta AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Three-PhaseWyeACPowerSupply...............................108
AC Power Supply Load Sharing and Fault Tolerance . . . . . . . . . . . . . . . . . . . 109
T640 Three-Phase Delta and Wye AC Power Supply LEDs . . . . . . . . . . . . . . . . . 109
Chapter 8 Switch Fabric Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 111
T640 Switch Interface Boards (SIBs) Description . . . . . . . . . . . . . . . . . . . . . . . . . 111
vCopyright © 2017, Juniper Networks, Inc.
Table of Contents

Part 2 Site Planning, Preparation, and Specifications
Chapter9 Preparation Overview .............................................117
T640SitePreparationChecklist.......................................117
T640 Chassis Grounding Cable and Lug Specifications . . . . . . . . . . . . . . . . . . . . 118
T640PhysicalSpecifications.........................................119
T640RackRequirements...........................................120
T640 Clearance Requirements for Airflow and Hardware Maintenance . . . . . . . 122
T640EnvironmentalSpecifications...................................122
Chapter 10 DC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 125
T640 DC Power System Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 125
T640 DC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 126
T640DCPowerSystemRequirements.................................128
T640DCPowerDistribution.........................................130
T640 DC Power Cable and Lug Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Chapter 11 AC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 135
T640 AC Power System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
T640 Three-Phase Delta AC Power Supply Specifications . . . . . . . . . . . . . . . . . 136
T640 Three-Phase Wye AC Power Supply Specifications . . . . . . . . . . . . . . . . . . 136
T640ACPowerRequirements........................................137
T640ACPowerCordSpecifications...................................139
Chapter 12 Network Cable and Transceiver Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion . . . . 141
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . . . . 141
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 141
Calculating Power Budget and Power Margin for Fiber-Optic Cables . . . . . . . . . 142
Calculating Power Budget for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 142
Calculating Power Margin for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 143
Chapter 13 Management Cable Specifications and Pinouts . . . . . . . . . . . . . . . . . . . . . . 145
T640 Routing Engine Interface Cable and Wire Specifications . . . . . . . . . . . . . . 145
T640 DB-9 Connector Pinouts for the Routing Engine AUXILIARY and CONSOLE
Ports.........................................................146
T640 RJ-45 Connector Pinouts for the Routing Engine ETHERNET Port . . . . . . 146
Part 3 Initial Installation and Configuration
Chapter14 InstallationOverview..............................................151
T640RouterInstallationSummary....................................151
Chapter15 UnpackingtheT640..............................................153
Tools and Parts Required to Unpack the T640 Router . . . . . . . . . . . . . . . . . . . . . 153
UnpackingtheT640Router..........................................153
Verifying the T640 Router Parts Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Chapter 16 Installing the Rack Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Installing the T640 Mounting Hardware for a Four-Post Rack or Cabinet . . . . . . 159
Installing the T640 Mounting Hardware for an Open-Frame Rack . . . . . . . . . . . 162
Copyright © 2017, Juniper Networks, Inc.vi
T640 Core Router Hardware Guide

Chapter 17 Installing the T640 Router into a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Overview of Installing the T640 Router in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . 167
Chapter 18 Installing the T640 Router With a Mechanical Lift . . . . . . . . . . . . . . . . . . . . 169
Overview of Installing a T640 Router Using a Mechanical Lift . . . . . . . . . . . . . . . 169
Tools Required to Install the T640 Router Using a Mechanical Lift . . . . . . . . . . . 169
Installing the T640 Router Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . 170
Removing the T640 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Attaching the T640 Router Installation Handle . . . . . . . . . . . . . . . . . . . . . . . 171
Mounting the T640 Chassis Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . 173
Removing the T640 Router Installation Handle and Reinstalling the Power
Supplies ..................................................176
Chapter 19 Installing the T640 Router Without a Mechanical Lift . . . . . . . . . . . . . . . . . 179
Overview of Installing the T640 Router Without a Mechanical Lift . . . . . . . . . . . 179
Tools and Parts Required to Install the T640 Router Without a Mechanical
Lift ..........................................................180
Removing Components from the T640 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . 180
RemovingtheT640PowerSupplies................................181
RemovingtheT640SIBs........................................182
RemovingtheT640ControlBoards................................183
RemovingtheT640SCGs.......................................184
Removing the T640 Standard or Quiet Rear Fan Tray . . . . . . . . . . . . . . . . . . 185
Removing the T640 Cable Management System . . . . . . . . . . . . . . . . . . . . . 186
Removing the T640 Standard or Quiet Front Fan Trays . . . . . . . . . . . . . . . . 187
RemovingtheT640FPCs........................................188
Attaching the T640 Router Installation Handle . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Installing the T640 Chassis in the Rack Manually . . . . . . . . . . . . . . . . . . . . . . . . . 192
Reinstalling Components in the T640 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Reinstalling the T640 Standard or Quiet Rear Fan Tray . . . . . . . . . . . . . . . . 196
ReinstallingtheT640SCGs......................................197
Reinstalling the T640 Control Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
ReinstallingtheT640SIBs.......................................199
Reinstalling the T640 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
ReinstallingtheT640FPCs......................................201
Reinstalling T640 Standard or Quiet Front Fan Trays . . . . . . . . . . . . . . . . . . 203
Reinstalling the T640 Cable Management System . . . . . . . . . . . . . . . . . . . 205
Chapter 20 Connecting the T640 to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Tools and Parts Required to Ground the T640 Router . . . . . . . . . . . . . . . . . . . . . 207
Connecting the T640 Grounding Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Chapter 21 Connecting the T640 to External Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Overview of Connecting the T640 Router to External Devices . . . . . . . . . . . . . . 209
Tools and Parts Required to Connect the T640 Router to External Devices . . . . 210
Connecting the T640 Router to a Management Console or Auxiliary Device . . . 210
Connecting the T640 Router to a Network for Out-of-Band Management . . . . . 212
Connecting the T640 Router to an External Alarm-Reporting Device . . . . . . . . . 214
Connecting the T640 Router to an External Clocking Device . . . . . . . . . . . . . . . . 215
Connecting PIC Cables to the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
viiCopyright © 2017, Juniper Networks, Inc.
Table of Contents

Chapter22 ProvidingPowertotheT640......................................219
Tools and Parts Required to Provide Power to the T640 Router . . . . . . . . . . . . . 219
Connecting DC Power to a T640 Router with Two-Input 160-A DC Power
Supplies .....................................................220
Connecting DC Power to a T640 Router with Three-input 240-A DC Power
Supplies(2-INPUTMode).......................................222
Connecting DC Power to a T640 Router with Four-Input 240-A DC Power
Supplies......................................................224
Connecting DC Power to the T640 Router (Six 60-A Inputs to Six-Input DC
Power Supplies) ...............................................227
Connecting DC Power to the T640 Router (Five 60-A Inputs to Six-Input DC
PowerSupplies)................................................231
Connecting DC Power to the T640 Router (Four 60-A Inputs to Six-Input DC
PowerSupplies)...............................................236
Powering On a DC-Powered T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Connecting AC Power to a T640 Router with Three-Phase Delta AC Power
Supplies ......................................................241
Connecting AC Power to a T640 Router with Three-Phase Wye AC Power
Supplies .....................................................244
Powering On an AC-Powered T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
PoweringOfftheT640Router.......................................248
Chapter 23 Configuring the Junos OS Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Preparing to Configure the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Initially Configuring the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
EnteringConfigurationMode.....................................252
Configuring User Accounts and Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . 252
ConfiguringSystemAttributes....................................253
CommittingtheConfiguration....................................254
Configuring DC Power on a T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Configuring DC Power on a T640 Router (Five 60-A Cables on a Six-Input
DCPowerSupply)..........................................255
Configuring DC Power on a T640 (Four 60-A Cables on a Six-Input DC
PowerSupply).............................................256
Part 4 Installing and Replacing Components
Chapter 24 Overview of Installing and Replacing Components . . . . . . . . . . . . . . . . . . . 261
T640Field-ReplaceableUnits........................................261
Tools and Parts Required to Replace the T640 Hardware Components . . . . . . 262
Chapter 25 Replacing Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
ReplacingaT640CraftInterface.....................................265
RemovingaT640CraftInterface.................................265
InstallingaT640CraftInterface..................................266
ReplacingtheT640CIP.............................................267
RemovingaT640CIP...........................................267
InstallingaT640CIP...........................................268
Replacing the T640 Alarm Relay Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Replacing the T640 Console or Auxiliary Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 273
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T640 Core Router Hardware Guide

Replacing the T640 Management Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . 275
ReplacingaT640SCG..............................................277
RemovingaT640SCG..........................................277
InstallingaT640SCG...........................................278
Chapter 26 Replacing Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
ReplacingaT640AirFilter...........................................281
RemovingaFrontT640AirFilter..................................281
InstallingaFrontT640AirFilter...................................283
RemovingaRearT640AirFilter..................................283
InstallingaRearT640AirFilter...................................285
Replacing the T640 Standard Lower Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . 286
Removing the T640 Standard Lower Front Fan Tray . . . . . . . . . . . . . . . . . . 287
Installing the T640 Standard Lower Front Fan Tray . . . . . . . . . . . . . . . . . . . 287
Replacing the T640 Standard Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . 288
Removing the T640 Standard Upper Front Fan Tray . . . . . . . . . . . . . . . . . . 288
Installing the T640 Standard Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . 289
Replacing the T640 Standard Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Removing the T640 Standard Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 290
Installing the T640 Standard Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . 291
Upgrading to the T640 Quiet Fan Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Upgrading the Standard Lower Front Fan Tray to a Quiet Lower Front Fan
Tray......................................................293
Removing the Standard Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . 294
RemovingtheCraftInterface.....................................295
Installing the Air Deflector and Craft Interface . . . . . . . . . . . . . . . . . . . . . . . 296
Installing the Quiet Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Upgrading the Standard Rear Fan Tray to a Quiet Rear Fan Tray . . . . . . . . . 297
Replacing the T640 Quiet Lower Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . 299
Removing the T640 Quiet Lower Front Fan Tray . . . . . . . . . . . . . . . . . . . . . 300
Installing the T640 Quiet Lower Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . 301
Replacing the T640 Quiet Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . 302
Removing the T640 Quiet Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . 302
Installing the T640 Quiet Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . 303
Replacing the T640 Quiet Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Removing the T640 Quiet Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Installing the T640 Quiet Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Chapter 27 Replacing Host Subsystem Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Replacing the T640 Host Subsystem Components . . . . . . . . . . . . . . . . . . . . . . . 307
Taking the T640 Host Subsystem Offline . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
ReplacingaT640LCC-CB...........................................310
RemovingaT640LCC-CB.......................................310
InstallingaT640LCC-CB........................................312
Replacing a T640 Standard Control Board or T-CB . . . . . . . . . . . . . . . . . . . . . . . 313
Removing a T640 Standard Control Board or T-CB . . . . . . . . . . . . . . . . . . . 314
Installing a T640 Standard Control Board or T-CB . . . . . . . . . . . . . . . . . . . . 315
ReplacingaT640RoutingEngine.....................................317
RemovingaT640RoutingEngine..................................317
InstallingaT640RoutingEngine..................................318
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Table of Contents

Replacing a CompactFlash Card in a T640 RE-C1800 Routing Engine . . . . . . . 320
Preparing to Replace a CompactFlash Card in a T640 RE-C180 Routing
Engine ....................................................321
Removing a CompactFlash Card in a T640 RE-C1800 Routing Engine . . . . 321
Installing a CompactFlash Card in a T640 RE-C1800 Routing Engine . . . . . 322
Copying the Junos OS to the CompactFlash Card in a T640 RE-C1800
RoutingEngine.............................................323
Replacing a DIMM Module in a T640 Routing Engine . . . . . . . . . . . . . . . . . . . . . . 324
RemovingaT640DIMMModule..................................324
InstallingaT640DIMMModule...................................324
Replacing a PC Card in a T640 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . 325
RemovingaT640PCCard.......................................325
InstallingaT640PCCard.......................................326
Replacing a Solid-State Disk in a T640 RE-C1800 Routing Engine . . . . . . . . . . . 327
Preparing to Replace a Solid-State Disk in a T640 RE-C1800 Routing
Engine ...................................................328
Removing a Solid-State Disk in a T640 RE-C1800 Routing Engine . . . . . . . 328
Installing a Solid-State Disk in a T640 RE-C1800 Routing Engine . . . . . . . . 329
Copying the Junos OS to the Solid-State Disk in a T640 RE-C1800 Routing
Engine ...................................................330
Chapter 28 Replacing Line Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
ReplacingaT640FPC..............................................333
RemovingaT640FPC..........................................333
InstallingaT640FPC...........................................336
ReplacingaT640PIC..............................................340
RemovingaT640PIC...........................................341
InstallingaT640PIC...........................................343
ReplacingT640PICCables.........................................346
RemovingaT640PICCable.....................................346
InstallingaT640PICCable......................................347
Chapter 29 Replacing Power System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Replacing a T640 Two-Input 160-A DC Power Supply . . . . . . . . . . . . . . . . . . . . 349
Removing a T640 Two-Input 160-A DC Power Supply . . . . . . . . . . . . . . . . 349
Installing a T640 Two-Input DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . 352
Replacing a T640 Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . . . . 356
Removing a T640 Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . 357
Setting the Input Mode Switch on a Three-Input 240-A DC Power Supply
foraT640Router..........................................360
Installing a T640 Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . 361
Replacing the T640 Cable Restraint on a Three-Input 240-A DC Power
Supply....................................................361
Removing the T640 Standard Cable Restraint from a Three-Input 240-A
DCPowerSupply.......................................362
Installing the T640 Optional Cable Restraint on a Three-Input 240-A
DCPowerSupply.......................................362
Connecting DC Power to a Three-Input 240-A DC Power Supply in a T640
Router....................................................363
Copyright © 2017, Juniper Networks, Inc.x
T640 Core Router Hardware Guide