Nortel 1100 安装指导

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Chapter 9  Nortel VPN Router 5000 option installation  173
Nortel VPN Router Installation — Hardware Options 
Replacing a fan tray
The VPN Router 5000 ships with two fan trays installed in the chassis: one tray in 
the front of the chassis and the other in the rear of the chassis 
Figure 71   
Location of the Nortel VPN Router 5000 fan trays
If a fan fails, the following indicators report the failure:
The front-panel Fail LED lights red.
The audible alarm beeps.
The event and system logs report the failure.
Caution: Replace a failed fan tray as soon as possible. Overheating can 
damage VPN Router 5000 components.
10894FA
Rear chassis
fan tray
Front chassis
fan tray