[. . . ] Disconnecting the power source Observe the following guidelines when connecting and disconnecting power to the power supply unit: Install the power supply unit before connecting the power cord to the AC power outlet. Unplug the power cord before removing the power supply unit from the computer. If the system has multiple sources of power, disconnect power from the system by unplugging all power cords from the power supplies. Using electrical power ? This product should be operated from the type of power indicated on the marking label. [. . . ] please consult a qualified technician or contact your local Acer dealer. 42 Enjoying TV with Windows Media Center Note: This feature is only available on certain models. Computers that include Windows Media Center Edition or InstantOn Arcade may be used to watch TV and to access video content (via an audio/video connection to an external device, such as a video camera). English Choose your input type The audio/video connection may be either a DVB-T digital antenna (for selected models) or a PAL/SECAM or NTSC connector. Please refer to the appropriate section: Watching TV using the optional DVB-T (digital TV) antenna (for selected models) DVB-T digital TV is an international standard that is used to transmit terrestrial television services in digital format. The DVB-T digital antenna can be used with Windows Media Center to watch local DVB-T digital TV broadcasts on your notebook PC. 43 English To connect the digital antenna 1 Plug the antenna cable into the RF jack of your computer. Watching TV with an external antenna or cable socket You may use conventional TV cables (connected to an external antenna or cable socket) to watch TV on your computer. Connecting antenna cables To connect your cables: 1 Plug the antenna connector into the RF jack of your computer. 44 2 Connect the other end to your TV cable, using the cable converter if necessary. Please ensure you use the correct cable system for your region before attempting to connect the antenna cable. Adding a Bluetooth device Every new device must first be "paired" with your computer?s Bluetooth adapter. After that, simply turning on the Bluetooth adapter of both devices will connect them. From the notification area, click the Bluetooth icon, and select Add a Bluetooth Device. English A code displays on your computer, which should match the code displayed on your device. Note: Some devices using older versions of the Bluetooth technology require both devices to enter a PIN. In the case of one of the devices not having any inputs (as in a headset), the passcode is hardcoded into the device (usually "0000" or "1234"). Your device will show up in the list of devices if it was successfully paired. English The operation window enables you to play music and audio from your device through your computer, send files to your device and change Bluetooth settings. 50 Troubleshooting This chapter shows you how to deal with common system problems. Do not attempt to open the computer yourself; contact your dealer or authorized service center For assistance. English Troubleshooting tips This notebook PC incorporates an advanced design that delivers onscreen error message reports to help you solve problems. [. . . ] = 85 Color: Source D65 Ordinary LCD: Class I Protective LCD: Class III Yn u'n v'n Reflection class of LCD panel (positive and negative polarity) Image polarity Reference white: Pre-setting of luminance and color temperature @ 6500K (tested under BM7) Pixel fault class ??????????????????????? LCD panel ergonomic specifications Design viewing distance Design inclination angle Design azimuth angle Viewing direction range class Screen tilt angle Design screen illuminance 500 mm 0. Reflection class of LCD panel (positive and negative polarity) Image polarity Reference white: Pre-setting of luminance and color temperature @ 6500K (tested under BM7) Pixel fault class ?= 85 Color: Source D65 Ordinary LCD: Class I Protective LCD: Class III Class II Part no. [. . . ]