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Removal and Replacement Procedures
This section describes the removal and replacement procedures for the SNC in its entirety.
Handling ESD-Sensitive Parts
When handling the SNC, it is strongly recommended that you follow the guidelines below:
•
Keep the ESD-sensitive part in a static-protective bag until you are ready to install the part into the
machine.
•
Make the fewest possible movements with your body to prevent an increase of static electricity from
clothing, fibers, carpets, and furniture.
•
If instructed to do so, switch off the machine power before you remove ESD-sensitive parts.
•
Just before touching the ESD-sensitive part, discharge any static electricity in your body to the
machine by touching the metal frame or cover of the machine. If possible, keep one hand on the
frame when you install or remove an ESD-sensitive part.
•
Wear an ESD wrist strap.
•
Do not place any ESD-sensitive parts on the machine cover or on a metal table because large metal
objects can become discharge paths if they are not grounded. If you must set aside an ESD-
sensitive part, first place it into the ESD static-protective bag.
•
Prevent ESD-sensitive parts from being accidentally touched by other personnel.
•
If possible, keep all ESD-sensitive parts in a grounded metal case.
•
Be very careful when you work with ESD-sensitive parts in cold weather. Low humidity and heating
increase static electricity.
Removing the SNC 4500
Perform these procedures if a repair action is required for any component of the SNC. They could be
necessary if an SNC fuse blows, or a firmware download is interrupted, or there is a hardware failure within
the SNC.
Shut down the host systems to ensure that all I/O through the SNC has
CAUTION
stopped.
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