IBM 847651U Handbook - Page 248

Universal serial bus, USB port problems, Action, Devices and I/O Ports

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Troubleshooting Universal serial bus (USB) port problems The USB ports cannot be accessed, or the number of serial buses displayed is less than the number of serial buses installed. A USB device does not work. A serial device does not work. Action Verify that: 1. Each bus is assigned a unique address. 2. Each port is assigned a unique address. To verify the address, run the Configuration/Setup Utility program, and select Devices and I/O Ports. See "Devices and I/O Ports" on page 41 for additional information. 3. The USB device is properly installed and firmly seated. 4. The serial-port adapter, if you installed one, is properly installed and firmly seated. For information on installing adapters, see "Installing or removing ISA and PCI adapters" on page 82. If the items above are correct, have the system serviced. Verify that: 1. The USB is enabled and is assigned a unique address. For information on using the Configuration/Setup Utility program, see "Using the Configuration/Setup Utility program" on page 39. 2. The USB clock speed matches the clock speed of the USB device. If the items above are correct, have the system serviced. Verify that the serial port is enabled and is assigned a unique address. If the items above are correct, have the system serviced. 214 Netfinity 3000 User's Handbook

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Troubleshooting
Universal serial bus
(USB) port problems
Action
The USB ports cannot be
accessed, or the number
of serial buses displayed
is less than the number
of serial buses installed.
Verify that:
1.
Each bus is assigned a unique address.
2.
Each port is assigned a unique address.
To verify
the address, run the Configuration/Setup Utility
program, and select
Devices and I/O Ports
.
See
“Devices and I/O Ports” on page
41 for additional
information.
3.
The USB device is properly installed and firmly
seated.
4.
The serial-port adapter, if you installed one, is
properly installed and firmly seated.
For
information on installing adapters, see “Installing
or removing ISA and PCI adapters” on page
82.
If the items above are correct, have the system serviced.
A USB device does not
work.
Verify that:
1.
The USB is enabled and is assigned a unique
address.
For information on using the
Configuration/Setup Utility program, see “Using
the Configuration/Setup Utility program” on
page 39.
2.
The USB clock speed matches the clock speed of
the USB device.
If the items above are correct, have the system serviced.
A serial device does not
work.
Verify that the serial port is enabled and is assigned a
unique address.
If the items above are correct, have the system serviced.
214
Netfinity 3000 User's Handbook