Panasonic CF-C1 Series Reference Manual

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160Troubleshooting (Advanced)z In the following cases, it is not possible to turn off using [Manual Switching] of the Optical Disc Drive Power-Saving Utility:• When WinDVD is running• During writing or reading of a disc• When the drive is being used by an application such as Roxio Creator LJBCannot eject discz Check that the computer is turned on.The drive power/open switch works only when the computer’s power is on.When [Optical Drive Power] is set to [Off] in the Setup Utility, it is not possible to open the disc cover unless Windows isrunning.z Press the center of the disc cover to confirm that the disc cover is locked firmly.The disc cover will only open if it is in the firmly locked position.z To remove a disc when the computer is turned off, insert a pointed object (e.g., the bent-out tip of a paper clip, or the tip ofa pencil or ballpoint pen) into the emergency hole on the bottom, and then move (Î page 76).The sound is not heardz Try changing the mute by pressing Fn + F4 or Fn + F5 / Fn + F6.z With the following procedure, check that the Windows sound function is operating.(If it is not operating, pressing Fn + F5 or Fn + F6 displays the pop-up icon shown on the right, but there is no sound.)AClick (Start) - [Computer] - [System properties] - [Device Manager].Click [Start] - [Control Panel] - [Performance and Maintenance] - [System] - [Hardware] - [Device Manager].B Double-click [Sound, video and game controllers] and check if or is displayed.If or is displayed, click the driver for which or is shown, press Del, and click [OK] in the confirmdeletion screen. Then restart the computer.To change the volumez Press Fn + F5 (to lower the volume) or Fn + F6 (to increase the volume).Problems with SoundWindows XPWindows 7Windows XP