Juniper T640 Hardware Manual page 419

O
open-frame rack See rack
overview
router.....................................................................................3
P
Packet Forwarding Engines
architecture and data flow...........................................9
parentheses, in syntax descriptions.............................xxvii
PC card, replacing................................................................203
PEMs see power supplies....................................................48
physical specifications........................................................341
PICs..............................................................................................29
ATM, use of analyzer...................................................156
connecting......................................................................120
description........................................................................29
maintenance..................................................................156
replacing..........................................................................225
replacing cables...........................................................230
SONET/SDH
alarm messages...................................................165
analyzer, use of.....................................................156
power budget calculation...............................363
status, checking...................................................156, 169
troubleshooting.............................................................170
pinouts
DB-9 cable connector ports
(auxiliary/console).................................................368
RJ-45 Ethernet cable connector port...................367
plug types
AC......................................................................................358
power
budget calculation......................................................363
cords See AC power cord;
margin calculation......................................................363
requirements and specifications...........................345
requirements for hardware components...........350
surges...............................................................................346
power supplies
cable
replacing................................................................260
cables See DC power cables
description.......................................................................48
electrical specifications............................................348
LEDs...............................................................51, 53, 56, 60
maintaining.....................................................................159
two-input 160-A DC
inputs.........................................................................50
Copyright © 2010, Juniper Networks, Inc.
power system
troubleshooting..............................................................171
power system components
replacing.........................................................................239
powering off router...............................................................136
powering on the router........................................................130
R
rack
clearance around, required........................................68
front-mount flange hole spacing............................66
mounting bracket hole spacing...............................66
securing to building.......................................................66
size and strength required..........................................66
standards, EIA and ETSI.............................................66
rack mounting
brackets..............................................................................77
front-mount flanges......................................................77
shelves................................................................................77
spacer bars........................................................................77
radio frequency interference, preventing....................346
redundancy..................................................................................5
relative humidity, acceptable...........................................343
removal instructions
cable
auxiliary or console port (for Routing
Engine management)...................................183
Ethernet port (for Routing Engine
management)...................................................181
SFP....................................................................................233
XENPAK module..........................................................236
removing
SIBs.....................................................................................98
replacing
air filters............................................................................191
CIP.......................................................................................177
fan trays............................................................................187
FPCs..................................................................................219
PC card............................................................................203
PICs...................................................................................225
power supply cable....................................................260
power system components.....................................239
Routing Engine.............................................................206
SCGs..................................................................................210
SIB version B...................................................................212
SIBs....................................................................................212
T-CBs................................................................................201
T640-SIBs......................................................................216
RFI..............................................................................................346
Index
389