Network Connection Problems - Lenovo System x3550 M5 Installation And Service Manual

Table 15. Monitor and video's symptoms and actions (continued)
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
• Go to the Support Web site at http://www.lenovo.com/support to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
Symptom
Wrong characters appear on
the screen.

Network connection problems

Use this information to solve network connection problems.
Table 16. Network connection problems and actions
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
• Go to the Support Web site at http://www.lenovo.com/support to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
Symptom
The server will not connect to
the network.
The server intermittently looses
connection.
Action
3. Replace the components listed in step 2 one at a time, in the order shown,
restarting the server each time:
a. Monitor cable
b. Video adapter (if one is installed)
c. Monitor
d. (Trained technician only) System board
1. If the wrong language is displayed, update the server firmware to the latest level
(see "Updating the firmware" on page 33) with the correct language.
2. Reseat the monitor cable.
3. Replace the components listed in step 2 one at a time, in the order shown,
restarting the server each time:
a. Monitor cable
b. Video adapter (if one is installed)
c. Monitor
d. (Trained technician only) System board
Action
1. If the network adapter is newly installed, verify that it is supported by the server
(see http://www.lenovo.com/ serverproven/).
2. Verify the network adapter slot power state and configuration (see "Using the
Setup Utility" on page 36).
3. Check to make sure that the server is properly connected to the network and
that there is no damage to the network cables.
4. Check the firmware device driver.
5. Check the Retain Tips for related issues on the Support Web site at
http://www.lenovo.com/support.
1. Verify that the network router or switch is operating properly.
2. Check to make sure that the server is properly connected to the network.
3. Check the firmware device driver.
.
Chapter 3 Troubleshooting
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