Juniper SRX5600 Hardware Manual page 49

Chapter 2: SRX5600 Services Gateway Hardware Components
device above the craft interface. The exhaust for the power supplies is located on the
rear bulkhead power supplies.
Each fan has an LED that displays its status. The fan LEDs are located on the top left of
the craft interface.
Figure 18: Airflow Through the Chassis
The host subsystem monitors the temperature of the services gateway components.
When the device is operating normally, the fans function at lower than full speed. If a fan
fails or the ambient temperature rises above a threshold, the speed of the remaining fans
is automatically adjusted to keep the temperature within the acceptable range. If the
ambient maximum temperature specification is exceeded and the system cannot be
adequately cooled, the Routing Engine shuts down the system by disabling output power
from each power supply.
Figure 19: Fan Tray
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