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Removing and Replacing Cisco ASR 1000 Series Router SPAs and SPA Interface Processors
Each SPA circuit board is mounted to a metal carrier and is sensitive to electrostatic discharge (ESD)
damage. The SIP and SPAs consist of a printed circuit board that is fixed in a metal carrier.
Electromagnetic interference (EMI) shielding, connectors, and a handle are integral components of the
carrier.
When a subslot is not in use, a SPA blank filler plate must fill the empty subslot to allow the router to
conform to electromagnetic interference (EMI) emissions requirements and to allow proper airflow
across the installed modules. If you plan to install a SPA in a subslot that is not in use, you must first
remove the SPA blank filler plate.
Caution
Always handle the SIP by the carrier edges and its handle; never touch the SIP components or connector
pins.
Figure 14-36
1
Printed circuit board
Although the metal carrier helps to protect the SIP and SPA from ESD, wear a preventive antistatic strap
whenever handling the SIP and SPA. Ensure that the strap makes good skin contact and connect the
strap's clip to an unpainted chassis surface to safely channel unwanted ESD voltages to ground.
If no wrist strap is available, ground yourself by touching the metal part of the chassis.
Following are guidelines for preventing ESD damage:
Always use an ESD wrist strap or ankle strap when installing or replacing the Cisco ASR 1000
•
Series SPA Interface (SIP) and shared port adapter. Ensure that the ESD strap makes contact with
your skin.
•
Handle the Cisco ASR 1000 Series SPA Interface (SIP) or shared port adapter by its metal carrier
edges and handles; avoid touching the printed circuit board or any connector pins.
Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
14-52
Chapter 14
Handling the Cisco ASR 1000 Series SPA Interface Processor
Printed circuit board
Metal carrier
GND
Removing and Replacing FRUs from the Cisco ASR 1000 Series Routers
2
Metal carrier
OL-13208-11
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