v
Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing,” on page 23 to determine which components are CRUs and which
components are FRUs.
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom
Action
Cannot connect to the
BladeCenter HT unit after a
switchover to the redundant
management module
1. Make sure that:
v
The network cable is connected to the Ethernet port on the active
(redundant) management module.
v
The network cable is not connected to the serial port on the active
(redundant) management module.
v
The IP address or host name is correct.
2. Reseat the management module (see “Removing a management module” on
3. Reset and reconfigure the management module (see the
BladeCenter
Advanced Management Module Installation Guide
for more information).
4. Replace the management module.
Media tray problems
v
Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing,” on page 23 to determine which components are CRUs and which
components are FRUs.
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom
Action
An external USB device is not
recognized by any blade server.
Note:
The BladeCenter HT unit
supports one external USB hub.
1. Make sure that the active blade server and the installed operating system
support USB devices.
2. Make sure that the blade server is enabled to use a USB device. See your
blade server documentation for more information.
3. Make sure that the USB device is powered-on.
4. Make sure that the blade server is turned on and owns KVM control. See the
blade server documentation for more information.
5. Check the LEDs on the multiplexer expansion module.
6. Reseat the following components:
a. USB device
b. Media tray (see “Removing a media tray” on page 51)
c. Multiplexer expansion module (see “Removing a multiplexer expansion
7. Replace the following components:
a. USB device
b. Media tray
c. Multiplexer expansion module
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BladeCenter HT Type 8740 and 8750: Problem Determination and Service Guide
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