Repacking CRUs
General Servicing Information
4-3
• Protect the CRU from exposure to dust, electromagnetic fields, vibrations, extreme
heat, or any other environmental conditions that might damage the CRU.
• Avoid prolonged storage that could reduce the useful life of the CRU.
If you are uncertain about the proper storage conditions for a specific CRU, see
“Getting Help” in the Preface. Also, see “Using ESD Precautions” on page 5-2 for
information about how to protect components from exposure to static electricity.
Repacking CRUs
When returning a defective or incorrect CRU, package the CRU using the original
packing materials or the replacement-CRU packing materials. Ensure that the CRU is
adequately protected from the following:
• Dents, scratches, and impact damage
• Magnetic fields and static electricity (using the pink or blue electrostatic discharge
(ESD) bag)
• Accidental opening of the package in transit
• Detachment of the address label
If you are uncertain that the CRU will be adequately protected during shipment, see
“Getting Help” in the Preface.
Replacing a CRU
Before replacing a CRU, do the following:
• Confirm that the CRU has failed and needs to be replaced. You can view failure
information from the status LEDs on each hardware component and from your
system’s event or error logs.
• Determine if a component needs to be taken out of service. See your system
administration documentation for information about using software commands or
tools to remove a component from service before you physically remove it.
• Take proper grounding precautions. When handling components, especially those
with exposed integrated circuits, use proper grounding procedures to avoid ESD
damage to the component. See the information about using ESD precautions.
• Observe the proper safety precautions. Follow the precautions listed in “General
Safety Precautions” on page 4-4.
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