Lenovo 0A33942 manual Troubleshooting, Video output Monitor display is blank

Page 17

Chapter 5. Troubleshooting

This chapter provides some troubleshooting hints and tips to assist you if you experience any problems with the port replicator. Check the following items first to try to correct the problem.

General

1.The power and connection indicator of the port replicator is not on.

Ensure that the ac power adapter included with the port replicator is correctly connected to the port replicator and a working electrical outlet. Do not use any adapters other than the one supplied with the port replicator.

2.Your notebook computer does not recognize the port replicator, and the power and connection indicator stays blue.

Disconnect the USB cable from your notebook computer, wait at least five seconds, and reinsert it into the USB connector of your notebook computer. If the problem persists, try connecting the USB cable to

adifferent USB connector of your notebook computer.

3.You connect the port replicator to a computer with the USB cable, but it does not work.

a.Ensure that the port replicator is well powered by its ac power adapter. The port replicator always needs external power supply for operation, because it does not take power from the USB connector attached to your notebook computer.

b.Ensure that the device driver of the port replicator is well installed and restart the computer if necessary.

c.Make sure that the USB connector on your computer works well; if not, replace with other USB connectors.

Video output

1.The monitor display is blank.

Ensure that the notebook computer connected to the port replicator is running correctly and is not in standby or hibernation mode. When the notebook computer is in standby or hibernation mode, the monitor display is always blank.

Ensure that the device drivers are installed following the installation steps and the icon for the port replicator is visible in the taskbar notification area.

Ensure that the video output function is not disabled.

Ensure the following connections:

The USB cable is correctly connected to your notebook computer.

The USB cable is correctly connected to the port replicator.

The ac power adapter is correctly connected to the port replicator and a working electrical outlet.

The video cable is correctly connected to the DVI-I video output connector. For the connection of the VGA connector, the DVI-I to VGA adapter is also secured by the screws on both sides of it.

If the problem persists, disconnect all connections of the port replicator, and uninstall the port replicator device drivers. Then, reinstall the device drivers.

2.When you are using Extend mode and playing back video clips, only one video clip is visible.

When you are using Extend mode, only one video playback application can be used at a time. If multiple video clips are played back, only one video clip is visible to the user. This also applies to Web pages with embedded video clips. To view these Web pages, move one page to the notebook computer monitor and the other to the external monitor.

© Copyright Lenovo 2010, 2011

13

Image 17
Contents Lenovo USB 2.0 Port Replicator with Digital Video User Guide Second Edition June Copyright Lenovo 2010 Contents Page Locating the controls About the port replicatorProduct description System requirements Installing the device driver on Windows operating systems Installing the port replicatorConnecting the port replicator to your notebook computer Lenovo USB 2.0 Port Replicator with Digital Video User Guide Using the audio connectors Using the port replicatorUsing the USB 2.0 connectors Using the DVI-I video output connectorLED Using the Ethernet connectorMirror mode Extend modeWorking with the port replicator Understanding the video output modesFor the Windows XP or Windows Vista operating system Switching video output modesWorking with the port replicator utility Rotating the external monitor display Setting the resolution of the external monitorSetting the color quality of the external monitor For the Windows 7 operating systems Advanced settingsOptimizing the video playback quality Disabling the video output function Manually enabling the audio connectorsSupported refresh rates For the Windows XP operating systemResolution Refresh rates Unit Hz Video output Monitor display is blank TroubleshootingLenovo USB 2.0 Port Replicator with Digital Video User Guide Troubleshooting Lenovo USB 2.0 Port Replicator with Digital Video User Guide Telephone technical support Appendix A. Service and SupportOnline technical support Lenovo USB 2.0 Port Replicator with Digital Video User Guide What this Warranty Covers Appendix B. Lenovo Limited WarrantyHow to Obtain Warranty Service What Your Service Provider Will Do to Correct ProblemsWhat this Warranty Does not Cover Replacement of a Product or PartYour Additional Responsibilities Use of Personal InformationLimitation of Liability European Economic Area EEA Warranty InformationCustomer Carry-In or Mail-In Service Courier or Depot ServiceProduct Exchange Service Suplemento de Garantía para MéxicoLenovo USB 2.0 Port Replicator with Digital Video User Guide Federal Communications Commission Declaration of Conformity Appendix C. Electronic emission noticesLenovo USB 2.0 Port Replicator with Digital Video 0A34183 Industry Canada Class B emission compliance statementLenovo USB 2.0 Port Replicator with Digital Video User Guide Appendix C. Electronic emission notices Lenovo USB 2.0 Port Replicator with Digital Video User Guide Recycling information Appendix D. NoticesTrademarks Lenovo USB 2.0 Port Replicator with Digital Video User Guide Ukraine RoHS China RoHSTurkish statement of compliance Lenovo USB 2.0 Port Replicator with Digital Video User Guide Page 0A33491