Hewlett-Packard Integrity cx2600 Maintenance Manual
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WARNING! Voltages are present within the server when power is applied. Do not remove the
server top cover without first turning off and disconnecting power. Always replace the top cover
before turning the system on.
1. Power off and disconnect system power. Disconnect power at the DC source end of the
power cables, using the disconnect device that is part of the rack or facility power system.
2. Slide the server out from the rack until it stops. See “Installing Components When the Server
Is in a Rack” (page 114).
3. Remove the server from the rack and place it on an ESD-protected work surface. See
“Removing the Server From a Rack” (page 115).
4. Use the ACX-15 Torx screwdriver to loosen the captive screw that holds the top cover in
place.
5. Slide the cover toward the rear of the server chassis and lift it straight up.
Replacing the Top Cover
To replace the top cover, follow these steps:
1. Align each pair of tabs on the left and right sides of the cover with the corresponding slots
in the chassis. Set the top cover in place on the server chassis.
2. Push the cover forward until it seats on the chassis.
3. Tighten the captive screw to secure the cover in place.
Removing and Replacing Hot-Swappable Chassis Fan Units
There are five hot-swappable chassis fan units in the server. Fan units 1, 2, 3 and 4 are accessible
from the front of the chassis. Fan unit 5 is accessible from the rear of the chassis. Fan units 1, 2,
3 and 4 are identical and interchangeable. There are also fans in the power supply assemblies,
but the power supplies are not field repairable. If a power supply fan fails, replace the power
supply assembly.
If a fan failure is total (both rotors), or if the fan was removed from the chassis for more than 30
seconds, a system logs the event as a critical error. A critical error causes the system LED to flash
red and requires a reboot to reset the error status. A total fan failure (including removal) for more
than two minutes results in system shutdown. If you are hot-swapping a fan assembly in response
to an error message, and the system is operating normally, hot-swapping the fan in less than 30
seconds eliminates the requirement for a system reboot. Hot-swapping a fan in less than two
minutes enables continued operation and prevents automatic shutdown.
CAUTION: Operating the server with the front grill removed risks EMI problems. Run the
server with the front grill removed only when hot-swapping a fan. Always replace the front grill
immediately after replacing the fan.
Observe all ESD safety precautions when performing this procedure. Failure to follow ESD safety
precautions can result in damage to the server.
NOTE: A hot-swappable device does not require interaction with the operating system before
the device is removed from or installed into the server.
The power to the server does not have to be off to remove or replace a hot-swappable chassis
fan unit.
Removing a Front Panel Hot-Swappable Fan
To remove a hot-swappable fan from the front of the server chassis, follow these steps:
124 Removing and Replacing Components