Juniper Networks MX240 Bedienungsanleitung PDF herunterladen (Seite 114)

86 ■ Troubleshooting the Power System

MX240 Ethernet Services Router Hardware Guide

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 241 242

Hardware Guide 1
End User License Agreement 3
Part 2 Setting Up the Router 6
Procedures 7
Part 4 Appendixes 9
Table of Contents 10
Table of Contents ■ xi 11
Part 5 Index 12
List of Figures 13
List of Tables 15
About This Guide 17
Documentation Conventions 18
JUNOS References 21
Release Notes 23
Obtaining Documentation 26
Documentation Feedback 26
Requesting Technical Support 27
MX240 Router Overview 29
2 ■ MX240 Router Overview 30
Router Overview 31
Component Redundancy 32
Hardware Components 33
6 ■ Router Chassis 34
Router Chassis ■ 7 35
Midplane 36
DPC Components 38
Host Subsystem 39
Switch Control Board (SCB) 39
SCB Slots 40
SCB Redundancy 40
SCB Components 41
SCB LEDs 41
Routing Engine 42
Host Subsystem ■ 15 43
Routing Engine Boot Sequence 44
Cable Management System 45
Craft Interface 45
ACO/LT (for “alarm 46
18 ■ Craft Interface 46
Host Subsystem LEDs 47
Power Supply LEDs 47
DPC LEDs 48
Fan LEDs 48
Power Supplies 49
AC Power Supply 49
AC Power Supply LEDs 50
DC Power Supply 51
Cooling System 52
Figure 18: Fan Tray 53
26 ■ Cooling System 54
Setting Up the Router 55
28 ■ Setting Up the Router 56
Chapter 3 57
Cabinet Requirements 58
Cabinet Airflow Requirements 58
Rack Requirements 59
Rack Size and Strength 59
Installation Overview 63
Unpacking the Router 65
Verifying Parts Received 66
Verifying Parts Received ■ 39 67
40 ■ Verifying Parts Received 68
Chapter 6 69
Installing the Router 73
Tools Required 74
Figure 23 on page 42 75
Connecting the Router 77
Connecting DPC Cables 79
52 ■ Connecting DPC Cables 80
Chapter 9 81
Grounding the Router 82
83
PS FAIL LED is not lit 83
OFF position 84
RTN) and the negative 86
Powering Off the Router 87
60 ■ Powering Off the Router 88
Configuring JUNOS Software 89
Chapter 11 95
Maintaining the Air Filter 96
Maintaining the Fan Tray 96
show chassis routing-engine 98
Maintaining DPCs 100
1/0, 1, and 2, left to right: 101
Maintaining DPC Cables 102
Handling and Storing DPCs 102
Holding a DPC 103
Storing a DPC 105
Chapter 12 107
Alarm Relay Contacts 108
Component LEDs 109
Troubleshooting DPCs 111
Replacing Hardware Components 115
Tools and Parts Required 116
Replacing the Craft Interface 117
Removing the Craft Interface 117
Replacing Alarm Relay Wires 119
Replacing the Fan Tray 120
Installing the Fan Tray 121
Replacing the Air Filter 122
Installing the Air Filter 123
RE0 functions as the 124
Replacing an SCB 125
PARK icon 126
Removing an SCB 127
Installing an SCB 128
Replacing a Routing Engine 130
Removing a Routing Engine 130
Installing a Routing Engine 131
Replacing a DPC 134
Installing a DPC 136
Figure 50: Installing a DPC 138
Removing an AC Power Supply 141
Installing an AC Power Supply 142
Removing a DC Power Supply 142
OFF position O 143
Installing a DC Power Supply 144
Replacing an AC Power Cord 146
ON position — and observe 149
Appendixes 151
124 ■ Appendixes 152
Information 153
Qualified Personnel Warning 155
Fire Safety Requirements 158
Fire Suppression 159
Fire Suppression Equipment 159
Chassis-Lifting Guidelines 160
Ramp Warning 164
Class 1 Laser Product Warning 165
Class 1 LED Product Warning 165
Laser Beam Warning 166
Battery Handling Warning 168
Jewelry Removal Warning 169
Lightning Activity Warning 170
Operating Temperature Warning 170
Product Disposal Warning 171
Agency Approvals 183
European Community 185
Declaration of Conformity 186
United States 187
Lithium Battery 187
Physical Specifications 189
162 ■ Physical Specifications 190
Appendix C 191
Specifications 193
Grouding Cable Specification 194
DC Power Specifications 194
DC Power Cable Specifications 198
AC Power Specifications 200
AC Power Cord Specifications 202
Figure 64: AC Plug Types 203
Radio Frequency Interference 204
Electromagnetic Compatibility 204
Cable and Wire Guidelines and 207
0.5 dBSplice 210
Single-mode—0.5 dB/km 210
Multimode—1 dB/km 210
Fiber attenuation 210
Interfaces 211
Cable Connector Pinouts 213
Mechanical Lift 215
Removing the Power Supplies 216
Removing the Fan Tray 217
Removing SCBs 217
Removing DPCs 218
Figure 68: Removing a DPC 219
Reinstalling the Fan Tray 222
Reinstalling SCBs 223
Reinstalling DPCs 224
Returning Hardware 225
SCB Serial Number Label 227
DPC Serial Number Label 228
(see Figure 80 on page 202) 229
Contacting Customer Support 230
Return Procedure 231
Index on page 209 235
208 ■ Index 236
Index ■ 209 237
210 ■ Index 238
Index ■ 211 239
212 ■ Index 240
Index ■ 213 241
214 ■ Index 242

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