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. The data transfer distance can be shorter than 10 meters depending on existing obstacles between the two devices, on radio wave quality, and on the operating system or the software in use. Move your computer and Bluetooth devices closer to each other. Why is my Bluetooth connection slow? . The data transfer speed depends on the obstructions and/or the distance between the two devices, on the radio wave quality, and on the operating system or the software in use. Move your computer and Bluetooth devices closer to each other. . The 2.4 GHz band, with which Bluetooth devices or wireless LAN devices work, is used by various devices. Although Bluetooth devices use the technology to minimize radio interference from other devices that use the same band, such radio interference may cause slower communication speeds and shorter distances or communication failures. . If a version of a Bluetooth standard employed on the Bluetooth device with which you want to communicate is not the same version as the one employed on your computer, the communication speed becomes slower. . High-speed communications between your computer and Bluetooth devices are available when they are compliant with Bluetooth Core Specification Version 3.0 High Speed (HS). For the high-speed communications, enable both the wireless LAN and Bluetooth functions on the computer. ! Some Bluetooth profiles do not support high-speed communications. Troubleshooting > Bluetooth Technology n143 N Why can't I use the services supported by the connected Bluetooth device? Connection is only possible for services also supported by the computer with the Bluetooth function. See Windows Help and Support for more information. Can I use a device with Bluetooth technology on airplanes? With Bluetooth technology, your computer transmits a radio frequency of 2.4 GHz. Sensitive locations, such as hospitals and airplanes, may have restrictions on use of Bluetooth devices to avoid radio interference. Check with facility staff to see if use of the Bluetooth function on the computer is permitted. Why can't I use the Bluetooth function when I log onto my computer as a user with a standard user account? The Bluetooth function may not be available to a user with a standard user account on your computer. Log onto the computer as a user with administrative rights. Why can't I use the Bluetooth devices when I switch users? If you switch users without logging off your system, the Bluetooth devices will not work. Be sure to log off before switching users. To log off your system, click Start, the arrow next to the Shut down button, and Log off. Why can't I exchange business card data with a mobile phone? The business card exchange function is not supported. Troubleshooting > Bluetooth Technology n144 N What should I do if I do not hear sound from my headphones or audio/video controller? Check whether your headphones or audio/video controller supports the SCMS-T content protection. If not, you need to change the SCMS-T settings to connect the device using the Advanced Audio Distribution Profile (A2DP). To change the SCMS-T settings, follow these steps: . Some VAIO models detect support of the SCMS-T content protection on a destination device for automatic reconfiguration of the SCMS-T settings. On such models, SCMS-T Settings in step 3 is not displayed because there is no need to manually change the settings. 1 Click Start and Devices and Printers. 2 Right-click the icon for the device that you want to connect using the A2DP and select Control. 3 Click SCMS-T Settings. 4 Click No when the Connect to a device only if it supports SCMS-T content protection message appears. What should I do if the Bluetooth icon is not displayed on the taskbar? . Make sure that the switch next to Bluetooth is set to On in the VAIO Smart Network window. . To display the Bluetooth icon on the taskbar, follow these steps: 1 Click Start and Devices and Printers. 2 Right-click the Bluetooth device icon and click Bluetooth settings. 3 Click the Options tab and select the Show the Bluetooth icon in the notification area check box. Troubleshooting > Optical Discs n145 N Optical Discs Why does my computer freeze when I try to read a disc? The disc that your computer is trying to read may be dirty or damaged. Follow these steps: 1 Press the Ctrl+Alt+Delete keys and click the arrow next to the Shut down button and Restart to restart the computer. ! Turning off your computer with the Ctrl+Alt+Delete keys may cause loss of unsaved data. 2 Remove the disc from the optical disc drive. 3 Check the disc for dirt or damage. If you need to clean the disc, see Discs (page 111) for instructions. What should I do if the drive tray does not open? . Make sure your computer is in Normal mode. . Press the drive eject button. . If the drive eject button does not work, click Start and Computer, right-click the optical disc drive icon, and select Eject. . If none of the above options work, insert a thin, straight object (such as a p...
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