IBM IntelliStation M Pro 6225, Руководство по техническому обслуживанию и ремонту

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3. Remove adapters and disconnect the cables and power connectors to all
internal and external devices until the computer is at the minimum configuration
required to start the computer (see “Undetermined problems” on page 102).
4. Reconnect all ac power cords, and turn on the computer. If the computer starts
successfully, replace adapters and devices one at a time until the problem is
isolated. If the computer does not start from the minimal configuration, replace
FRUs of minimal configuration one at a time until the problem is isolated.
To use this method, you must know the minimum configuration required for the
computer to start (see page “Undetermined problems” on page 102).
Troubleshooting the Ethernet controller
This section provides troubleshooting information for problems that might occur with
the 1 Gbps Ethernet controller.
See the Ethernet controller documentation on the Device Drivers CD for information
about problems that might occur with the 1 Gbps Ethernet controller.
The way the Ethernet controller is tested depends on which operating system you
are using (see the Ethernet controller device-driver file).
You can use the Ethernet wrap test to determine whether a hardware problem is
causing the Ethernet connection to fail. To perform the Ethernet wrap test, use the
wrap plug (IBM part number 60G3981) with the diagnostic tests.
If this testing method indicates that the hardware is functioning normally but the
problem remains, see “Network connection problems” or inform the network
administrator.
Network connection problems
If the Ethernet controller cannot connect to the network, check the following
conditions:
v Make sure that the cable is installed correctly.
The network cable must be securely attached at all connections. If the cable is
attached but the problem remains, try a different cable.
If you set the Ethernet controller to operate at either 100 Mbps or 1000 Mbps,
you must use Category 5 or higher cabling.
v Determine whether the hub supports auto-negotiation. If it does not, try
configuring the integrated Ethernet controller manually to match the speed and
duplex mode of the hub.
v
Check the Ethernet controller LEDs on the rear of the computer.
The Ethernet link status LED, on the rear of the computer, is lit when the
Ethernet controller receives a LINK pulse from the hub. If the LED is off, there
might be a defective connector or cable or a problem with the hub.
v Make sure that you are using the correct device drivers, which are supplied with
the computer.
v Check for operating-system-specific causes for the problem.
v Make sure that the device drivers on the client and computer are using the same
protocol.
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IntelliStation M Pro Types 6225 and 6228: Hardware Maintenance Manual and Troubleshooting Guide