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5
M
U
AINTENANCE AND
PGRADES
This chapter describes how to perform maintenance procedures for your
communications server.
Any user can perform these procedures:
Cleaning the diskette drive (Model CS/3100 only)
Replacing the fuse
Replacing Ethernet interface modules
Only qualified service personnel should perform these procedures:
Replacing or adding 16-port asynchronous modules
Replacing the diskette drive (Model CS/3100 only), power supply, memory
chips, or EPROM
Maintenance
3Com recommends the following procedures for preventive maintenance:
Observe the environmental requirements listed in Table 1-7 on page 1-15.
Temperatures outside the recommended range can impair reliability and
cause diskette access errors.
Keep the area around the server clean. Avoid accumulated dust, especially
around the air intake slots.
If you need to handle the motherboard, auxiliary processor board, 16-port
asynchronous modules, or Ethernet interface module, observe electrostatic
discharge guidelines. Refer to "Preparation" for details.
For Model CS/3100 only:
Handle the software distribution and working diskettes carefully. Always
hold a diskette by its protective cover or by the label area; never touch the
magnetic media, the metal clips at the edges, or the metal disk in the center.
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