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Cisco ASR 903 Router Hardware Installation Guide
OL-25178-05
Chapter 1 Cisco ASR 903 router Overview
Cisco ASR 903 router Features
Fan Tray (A903-FAN)
The Cisco ASR 903 router uses a modular fan tray that is separate from the power supply. The fan tray
contains twelve fans and provides sufficient capacity to maintain operation indefinitely in the event of
an individual fan failure.
Figure 1-4 Cisco ASR 903 router Fan Tray (A903-FAN)
Fan Tray (A903-FAN-E)
The A903-FAN-E is a fan tray containing twelve (40 x 40 x 20 mm) fans and provides sufficient capacity
to maintain operation indefinitely in the event of an individual fan failure. It has a 8 mm fan dust filter
that prevents dust from entering the unit and avoids possible damage to the components. The fan tray is
IEC60950-1 compliant.
281933
ALARM
FAN TEMP
CRIT MAJ MIN