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If your computer is a Gigabit Ethernet model, it cannot connect to the network at 1000 Mbps. Instead,
it connects at 100 Mbps
Symptom: If your computer is a Gigabit Ethernet model, it cannot connect to the network at 1000 Mbps.
Instead, it connects at 100 Mbps.
Actions:
• Try another cable.
• Ensure that the link partner is set to auto-negotiate.
• Ensure that the switch is 802.3ab-compliant (gigabit over copper).
A wireless LAN problem
Symptom: You cannot connect using the built-in wireless networking card.
Actions:
• Ensure that your wireless LAN driver is the latest version. Check the Web site and verify the driver version
supported by Access Connections is the latest documented in the readme file.
• Ensure that your computer is within range of a wireless access point.
• Ensure that the wireless radio is enabled by double-clicking the Access Connections icon in the Windows
notification area.
• Check Network Name (SSID), and your encryption information. Use Access Connections to verify this
case-sensitive information.
A wireless WAN problem
Message: Unauthorized WAN card is plugged in - Power off and remove the WAN card.
Action: The WAN card is not supported on this computer. Remove it.
Note:
Some computer models do not have a wireless WAN.
Bluetooth problem
Symptom: Sound does not come from the Bluetooth headset or headphone but comes from the local
speaker even though the headset or headphone is connected using the Headset profile or AV profile.
Action: Do the following:
1. Exit the application that uses the sound device (for example, Windows Media
®
Player).
2. Open Control Panel.
3. Click
Hardware and Sound
➙
Sound
.
4. Select the
Playback
tab.
5. If you are using the Headset profile, select
Bluetooth Hands-free Audio
and click the
Set Default
button. If you are using the AV profile, select
Stereo Audio
and click the
Set Default
button.
6. Click
OK
to close the Sound window.
Option problems
Use this information to diagnose problems with Lenovo hardware options that do not have their own
troubleshooting information.
Select your symptom from the following list:
•
“An option that was just installed does not work” on page 49
48
ThinkCentre E73z Hardware Maintenance Manual
Summary of Contents for ThinkCentre E73z
Page 1: ...ThinkCentre E73z Hardware Maintenance Manual Machine Types 10BD and 10BL ...
Page 6: ...2 ThinkCentre E73z Hardware Maintenance Manual ...
Page 13: ...Chapter 2 Safety information 9 ...
Page 17: ...Chapter 2 Safety information 13 ...
Page 18: ...1 2 14 ThinkCentre E73z Hardware Maintenance Manual ...
Page 19: ...1 2 Chapter 2 Safety information 15 ...
Page 24: ...1 2 20 ThinkCentre E73z Hardware Maintenance Manual ...
Page 25: ...1 2 Chapter 2 Safety information 21 ...
Page 28: ...24 ThinkCentre E73z Hardware Maintenance Manual ...
Page 32: ...28 ThinkCentre E73z Hardware Maintenance Manual ...
Page 36: ...32 ThinkCentre E73z Hardware Maintenance Manual ...
Page 68: ...64 ThinkCentre E73z Hardware Maintenance Manual ...
Page 71: ...Figure 3 Locating major FRUs and CRUs Chapter 8 Locations 67 ...
Page 114: ...110 ThinkCentre E73z Hardware Maintenance Manual ...
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