4-3
Cisco 12000 Series Router SIP and SPA Hardware Installation Guide
Release 12.0(32)SY1, OL-8831-01, Rev. G6, July 19, 2007
Chapter 4 Installing and Removing a SPA Interface Processor
Removing and Installing a SIP
Caution
The router may indicate a hardware failure if you do not follow proper procedures. Remove
or insert only one SIP at a time. Allow at least 15 seconds for the router to complete the
preceding tasks before removing or inserting another SIP.
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SIPs have two ejector levers to release the SIP from its backplane connector. Use the levers when
you are removing the SIP and to seat the SIP firmly in its backplane connector when you are
installing the SIP. The ejector levers align and seat the SIP connectors in the backplane.
Caution
When you remove a SIP, always use the ejector levers to ensure that the connector pins
disconnect from the backplane in the logical sequence expected by the router. Any SIP that is
only partially connected to the backplane can halt the router.
When you install a SIP, always use the ejector levers to ensure that the SIP is correctly aligned
with the backplane connector; the connector pins should make contact with the backplane in
the correct order, indicating that the SIP is fully seated in the backplane. A SIP that is only
partially seated in the backplane will cause the router to hang and subsequently crash.
Removing a SIP
If you are replacing a failed SIP, remove the existing SIP first, then install the new SIP in the same slot.
To remove a SIP, use
Figure 4-2
as a reference and follow these steps:
Step 1
Attach an ESD-preventive wrist strap and follow its instructions for use.
Step 2
Disconnect and remove all interface cables from the ports; note the current connections of the cables to
the ports on the SIP.
Step 3
Detach the SIP cable-management bracket from the SIP.
Step 4
Use a screwdriver to loosen the captive installation screw at each end of the SIP faceplate. (See
Figure 4-2
a.)
