Appendix B: Field-Replaceable Units
7705 SAR-8 Installation Guide Page 137
Replacing a CSM
This section contains:
• Warnings and Notes
• Removing a CSM
• Replacing a CSM
Warnings and Notes
Warnings:
• Electrostatic discharge (ESD) damage can occur if 7705 SAR-8 components are
mishandled. Always wear an ESD-preventive wrist or ankle strap connected to a nearby
ground point that is connected to a site grounding point (typically, the grounding stud on
the 7705 SAR-8, or a properly grounded rack or work bench).
• Always place router components on an anti-static surface.
• Filler plates are required on all empty slots to prevent excess dust accumulation and to
help control airflow and electromagnetic interference.
Notes:
• When replacing CSMs, modifying the configuration is not required.
• The 7705 SAR-8 requires at least one CSM, which must be installed in slot CSM A. For
redundancy, install a second CSM in slot CSM B.
• Do not force an adapter card into a CSM slot.
• Do not force a CSM into an adapter card slot.
• When removing a CSM, always use the ejector levers to make sure that the connector
pins disconnect from the backplane.
• In a single CSM system, removing the active CSM causes the system to shut down. If
you are not immediately installing a replacement CSM, cover the empty slot with a filler
plate and power off the system until the CSM is replaced.
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