Juniper T640 Hardware Manual page 504

T640 Core Router Hardware Guide
troubleshooting...........................................................206
types....................................................................................27
fuses............................................................................................59
G
grounding
equipment warning....................................................405
requirements warning...............................................406
grounding (electrical) specifications
DC-powered router.....................................................425
grounding cables
lug......................................................................................425
guidelines
electrical cable and wiring.......................................426
safety ..............................................................................383
H
hardware components
power requirements...................................................430
higher-order mode loss (HOL).......................................445
host subsystem
description........................................................................32
LEDs....................................................................................54
maintaining.....................................................................183
taking offline.................................................................256
hot-pluggable components,
humidity (relative), acceptable......................................423
I
immunity standards.............................................................415
installation
DC power, connecting....................144, 146, 148,
PICs, connecting............................................................141
power requirements...................................................425
preparing to install.........................................................87
router........................................................................101,
unpacking the router.....................................................87
installation handle
attach...............................................................................103
remove.....................................................................107,
installation instructions
alarm relay contact wires
during initial installation...................................138
tools required........................................................136
cable, auxiliary or console port (for Routing
Engine management)
during initial installation...................................136
for maintenance or
tools required........................................................136
472
description......................217
320
109
128
replacement..................227
cable, Ethernet port (for Routing Engine
management)
during initial installation...................................138
for maintenance or
tools required........................................................136
cable, external clocking inputs port
during initial installation...................................140
DC power and grounding cables
tools required........................................................136
SFP...................................................................................303
XENPAK module.........................................................306
installation warning..............................................................391
instructions
cleaning See cleaning instructions
maintenance See maintenance guidelines
PIC..............................................................................191
packing
router for shipment............................................463
returning router............................................................464
interface
network...........................................................................445
interference
electromagnetic..........................................................426
radio frequency............................................................426
J
jewelry removal warning...................................................400
Junos OS
modularity and scalability............................................6
L
laser
beam warning...............................................................397
Class 1 laser warning..................................................396
LCD on craft interface
alarm mode......................................................................54
description........................................................................53
idle mode..........................................................................53
LEDs
alarm (red and yellow on craft interface)
description...............................................................52
Class 1 LED warning....................................................397
Control Board..........................................................44,
FPC......................................................................................55
host subsystem..............................................................54
power supplies..........................................62, 65, 68,
safety warnings............................................................396
SCG.....................................................................................50
Copyright © 2013, Juniper Networks, Inc.
replacement..................224
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