User's Manual

DEC. 2011—EFT REVIEW DRAFT—CISCO CONFIDENTIAL

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Cisco 1240 Connected Grid Router Hardware Installation Guide

OL-26223-01

Chapter 4 Opening the Router Chassis

Opening the Router Door

• When opening the door, alternate loosening screws on each side of the chassis, in the order shown

Figure 4-1, to evenly release the door pressure.

• When closing the door, do not tighten the screws on the hinge-side of the door first. Tightening the

screws on the hinge-side first can place too much pressure on the door hinges.

Figure 4-2 Recommended Order of Loosening and Tightening Screws

Opening the Door

Step 1 To open the door, use a box-end or socket wrench to loosen all six captive screws in the order shown in

Figure 4-1.

Note The screws cannot be removed from the door. Figure 4-3 is a detailed view of a captive screw.

Step 2 After all six screws are loose, swing the door open on the left-side hinges, as shown in Figure 4-4.

Caution The door gasket creates a seal when the door is closed, so the door might open suddenly when the last

screw is loosened.

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