Juniper Networks MX240 Manuel d'utilisateur Page 189
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Appendix B
Physical Specifications
■ Physical Specifications on page 161
Physical Specifications
Table 25 on page 161 summarizes the physical specifications for the router chassis.
Table 25: Physical Specifications
ValueDescription
8.71 in. (22.1 cm) high
17.45 in. (44.3 cm) wide
24.5 in. (62.2 cm) deep (from front-mounting bracket to chassis
rear)
Total depth (including cable management system)
27.75 in. (70.5 cm)
Chassis dimensions
Chassis with midplane, fan tray, air filter, and cable management
system: 52.0 lb (23.6 kg)
Maximum configuration: 128 lb (58.1 kg)
Router weight
2.4 lb (1.1 kg)Routing Engine weight
9.6 lb (4.4 kg)SCB weight
13.1 lb (5.9 kg)DPC weight
1.1 lb (0.5 kg)Craft interface weight
4.2 lb (1.9 kg)Fan tray weight
1.0 lb (0.5 kg)Air filter weight
0.3 lb (0.14 kg)Cable managment weight
3.8 lb (1.7 kg)DC power supply weight
5.0 lb (2.3 kg)AC power supply weight
Physical Specifications ■ 161
- 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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