Table 5: ACX5448-M Router Model Numbers and Description (continued)
AirflowPower SupplyModel Number
Airflow out (front-to-back)DCACX5448-M-DC-AFO
CAUTION: Do not mix different types (AC and DC) of power supply modules and
different airflow modules (AFI and AFO) in the same chassis.
Field-Replaceable Units in ACX5400 Routers
Field-replaceable units (FRUs) are components that you can replace at your site. The ACX5400 FRUs are
hot-insertable and hot-removable: you can remove and replace them without powering off the router or
disrupting the routing function.
The following are the ACX5400 FRUs:
•
Power supply modules (PSMs)
•
Fan modules
•
Optical transceivers
CAUTION: Replace a failed PSM with a new PSM within one minute of removal to
prevent chassis overheating. The router continues to operate with only one PSM
running. Replace a failed fan module with a new fan module within one minute of
removal to prevent chassis overheating. Do not operate the router with missing FRUs
for longer than one minute.
NOTE: If you have a Juniper J-Care service contract, register any addition, change, or upgrade
of hardware components at
https://www.juniper.net/customers/csc/management/updateinstallbase.jsp. Failure to do so
can result in significant delays if you need replacement parts. This note does not apply if you
replace existing components with the same type of component.
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