Juniper M120 Hardware Manual page 15

Chapter 21
Part 4
Chapter 24
Chapter 25
Chapter 26
Chapter 27
Copyright © 2018, Juniper Networks, Inc.
Figure 56: M120 Routing Engine Alarm Relay Contacts . . . . . . . . . . . . . . . . . . . . . 163
Figure 57: Attaching a Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Providing Power to the M120 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Figure 58: Connecting AC Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . 168
Figure 59: Connecting DC Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . 170
Installing and Replacing Components
Replacing Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Figure 60: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 184
Figure 61: Removing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Figure 62: Installing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Replacing Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Figure 63: Removing the M120 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Figure 64: Installing the M120 Front Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Figure 65: Removing an M120 Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . 191
Figure 66: Removing an M120 Lower Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 191
Figure 67: Installing an M120 Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 192
Figure 68: Installing an M120 Lower Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 193
Replacing Host Subsystem Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Figure 69: Removing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Figure 70: Installing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Figure 71: RE-A-1800 Storage Drive Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Figure 72: RE-S-1800 Storage Drive Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Figure 73: Installing the DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Figure 74: Removing an M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Figure 75: Installing an M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Figure 76: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 206
Figure 77: M120 Ethernet Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Figure 78: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 207
Figure 79: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 208
Figure 80: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 209
Figure 81: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . . 210
Figure 82: M120 Ethernet Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Figure 83: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . . 211
Replacing Line Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Figure 84: Removing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Figure 85: Installing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Figure 86: Connecting Fiber-Optic Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . 218
Figure 87: Removing an M120 CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Figure 88: Installing an M120 CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Figure 89: Removing an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Figure 90: Installing an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Figure 91: Connecting Fiber-Optic Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . 230
Figure 92: Removing a M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Figure 93: Installing a M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Figure 94: Removing M120 SFPs or XFPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
List of Figures
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