Juniper Networks Hardware Manual page 302

M120 Multiservice Edge Router Hardware Guide
FPCs...............................................................................................9
components.......................................................................11
LEDs.....................................................................................27
maintaining....................................................................106
replacing...........................................................................152
status, checking....................................................106, 121
troubleshooting..............................................................121
G
grounding (electrical) specifications
AC-powered router.....................................................229
DC-powered router.....................................................229
grounding cables
lug......................................................................................229
guidelines See specifications.............................................37
H
hardware components
power requirements....................................................237
higher-order mode loss (HOL)........................................242
host subsystem
description.........................................................................18
LEDs....................................................................................26
maintaining....................................................................104
taking offline..................................................................140
hot-pluggable components, description......................127
humidity (relative), acceptable.......................................227
I
immunity standards.............................................................219
installation
AC power, connecting..................................................89
DC power, connecting...................................................91
parts received, verifying...............................................46
PICs, connecting.............................................................87
preparing to install........................................................43
router...........................................................................55, 59
unpacking the router....................................................44
installation instructions
alarm relay contact wires
tools required...........................................................81
cable, auxiliary or console port (for Routing
Engine management)
tools required...........................................................81
cable, Ethernet port (for Routing Engine
management)
tools required...........................................................81
cable, PIC
for maintenance or replacement..................166
274
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chassis
unpacking.................................................................43
DC power and grounding cables
tools required...........................................................81
XENPAK module.............................................................171
instructions
calculation
power requirements...........................................237
cleaning See cleaning instructions
maintenance See maintenance guidelines
PIC..............................................................................112
site preparation...............................................................37
J
Juniper Networks Technical Assistance Center
(JTAC)....................................................................................118
L
LEDs
AC power supplies.........................................................30
alarm (red and yellow on craft interface)
description...............................................................24
CB.........................................................................................22
DC power supplies.........................................................32
FEB.......................................................................................27
FPC.......................................................................................27
host subsystem..............................................................26
on components..............................................................119
on craft interface...........................................................118
power supplies................................................................28
link loss, calculating............................................................244
lithium battery compliance...............................................223
lug for grounding cables....................................................229
lugs for DC power and grounding cables....................234
M
maintaining
air filter..............................................................................102
CFPCs...............................................................................106
fan trays...........................................................................102
FEBs....................................................................................113
FPCs..................................................................................106
host subsystem............................................................104
PICs.....................................................................................112
power supplies...............................................................115
maintenance
warnings.........................................................................203
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