Service manual

Chapter 6 Replacing Parts
87
Replacing I/O Fans
The I/O fans may be hot swapped and do not require any tools to perform the replacement.
1. Log off all users. Back up files. Follow instructions in your network operating system (NOS)
documentation to gracefully shut down all networking software and applications.
2. Press the power switch on the HP NetServer's control panel when prompted by the operating
system.
3. Disconnect the power cables.
WARNING The power supplies will continue to provide standby current to the NetServer until
the power cable is disconnected.
4. If you have a rack-mounted LH3000r, then consider removing the signal cables from the rear of
the enclosure before extending the enclosure on the slides (if you don't have a cable
management arm). If necessary, label the signal cables to support re-connecting them.
5. Remove the top cover (rack-mount orientation) or the side cover (pedestal version).
CAUTION Wear a wrist strap and use a static-dissipating work surface connected to the
chassis when handling components. Ensure that the metal of the wrist strap
contacts your skin.
6. The individual I/O fans may be removed by pressing the release tab and pulling the fan away
from the chassis.
7. The individual I/O fan must be replaced for proper operation of the NetServer.
I/O Fans
Replacing the Power Management/Interconnect Board
You will remove the LH 3000/ LH 3000r Power Management/Interconnect board only when it has failed.
1. Log off all users. Back up files. Follow instructions in your network operating system (NOS)
documentation to gracefully shut down all networking software and applications.
2. Press the power switch on the HP NetServer's control panel when prompted by the operating
system.