Universal Serial Bus (Usb) Port Problems - IBM BladeCenter HS22V 7871 Problem Determination And Service Manual

Universal Serial Bus (USB) port problems

Use this information to diagnose and resolve USB port problems in the blade
server.
The USB ports are shared BladeCenter unit resources. First, make sure that the USB
ports are assigned to the blade server; then, see the following table and "Solving
shared BladeCenter resource problems" on page 217.
Follow the suggested actions in the order in which they are listed in the Action
column until the problem is solved.
v See Chapter 4, "Parts listing, Types 7871 and 1949," on page 41 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
A USB device does not work.
180
BladeCenter HS22V Type 7871 and 1949: Problem Determination and Service Guide
Action
1. Make sure that the media-tray select button LED on the front of the blade
server is lit, indicating that the blade server is connected to the shared media
tray.
2. Check the function of the shared BladeCenter unit resources. See "Solving
shared BladeCenter resource problems" on page 217.
3. Make sure that:
v The operating system supports USB devices.
v The correct USB device driver is installed. For the latest device drivers, go to
http://www.ibm.com/support/.
4. (Trained service technician only) Replace the system-board assembly. See
"Removing the system-board assembly" on page 94 and "Installing the
system-board assembly" on page 95.