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Installing and Upgrading Fans in Cisco 2811 Series Routers
78-17850-01
Removing the Chassis Cover
Warning
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Statement 1001
Warning
Read the installation instructions before connecting the system to the power source.
Statement 1004
Warning
Before working on equipment that is connected to power lines, remove jewelry (including rings,
necklaces, and watches). Metal objects will heat up when connected to power and ground and can
cause serious burns or weld the metal object to the terminals.
Statement 43
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first.
Statement 1026
Removing the Chassis Cover
Cisco 2811 series routers have a cover that lifts off after you slide it free from front panel.
Caution
Do not, under any circumstances, tamper with or attempt to remove the safety shields protecting the
WIC/HWIC slots and connectors on the Cisco 2811 routers.
Removing the Cover from Cisco 2811 Routers
To remove the chassis cover for a Cisco 2811 series router, follow these steps. You will need a number
2 Phillips screwdriver and a flat-blade screwdriver with a blade width of 1/4 ± 1/32 inch (5 to 7 mm).
Rack-mounted routers must be removed from the rack and positioned on a flat surface before you start
removing the cover.
Caution
To prevent damage to the chassis, follow this procedure to remove the cover. Do not pry on the plastic
bezel or on the ears at either side of the chassis on the back.
The following warning applies only if the router is provided with a DC power input:
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003