User manual IBM THINKPAD R50

[. . . ] ThinkPad Computer Hardware Maintenance Manual July 2005 This manual supports: ThinkPad R50/R50p, R51 series (MT 1829, 1830, 1831, 1832, 1833, 1836, 1840, 1841, 2883, 2887, 2888, 2889, 2894, 2895) ThinkPad Dock II (MT 2877) Note Before using this information and the product it supports, be sure to read the general information under "Notices" on page 224. First Edition (July 2005) © Copyright Lenovo 2005. Portions © Copyright International Business Machines Corporation 2005. GOVERNMENT USERS ­ RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to the GSA ADP Schedule contract with Lenovo Group Limited, if any, or the standard terms of this commercial license, or if the agency is unable to accept this Program under these terms, then we provide this Program under the provisions set forth in Commercial Computer Software­Restricted Rights at FAR 52. 227-19, when applicable, or under Rights in Data-General, FAR 52. 227. 14 (Alternate III). Contents About this manual . [. . . ] If two DIMMs are installed, remove one of them and run Diagnostics --> Memory Test--Quick. If the problem does not recur, return the DIMM to its place, remove the other one, and run the test again. If the test does not detect the error, run Diagnostics --> Memory Test--Full. Turn on the computer and check the air turbulence at the louver near the PC Card slot. If the TrackPoint does not work, check the configuration as specified in the ThinkPad Configuration program. After you use the TrackPoint, the pointer may drift on the screen for a short time. This drift can occur when a slight, steady pressure is applied to the TrackPoint pointer. If the pointer stops after a short time, no service action is necessary. If enabling the TrackPoint does not correct the problem, continue with the following: v Interactive Tests --> Mouse Touch Pad If the Touch Pad does not work, check the configuration as specified in the ThinkPad Configuration program. If enabling the Touch Pad does not correct the problem, continue with the following: v Interactive Tests --> Mouse Keyboard Hard-disk drive Diskette drive DVD drive or DVD/CD-RW combo drive Memory Fan TrackPoint or pointing device ThinkPad R50/R50p and R51 Series 51 Product overview Fn key combinations The following table shows the function of each combination of Fn with a function key. Key combination Fn+F1 Fn+F2 Fn+F3 Description Reserved. To turn the computer display on again, press any key or press the TrackPoint pointing stick. To return to normal operation, press the Fn key only, without pressing a function key. The setting can be changed so that pressing it puts the computer into hibernation mode or even shuts the computer down. This combination of the keys functions as a toggle switch of the power state. Note: In Windows 2000 or Windows XP, this combination of keys enables or disables the built-in wireless networking features (the IEEE 802. 11 standard) and the Bluetooth wireless features. v ThinkPad Power Management driver v OnScreen Display utility v Wireless device drivers Reserved. Switch a display output location v External monitor (CRT display) v Computer display and external monitor (LCD + CRT display) v Computer display (LCD) Note: For any operating system other than Windows 2000 or Windows XP, no additional procedure is needed; just press Fn+F7. This function does not work when different desktop images are displayed on the computer display and the external monitor (the Extend desktop function). This function does not work while a DVD movie or a video clip is playing. For Windows 2000 or Windows XP, a hotkey application might take over the switching function. Fn+F4 Fn+F5 Fn+F6 Fn+F7 (continued) 52 R50/R50p, R51 Series Product overview Key combination Fn+F8 Description If the image displayed on the computer is smaller than the physical display, switch the computer screen size between expanded mode and normal mode. Buttons for the following choices are displayed: v Eject ThinkPad PC from Dock: This button is displayed only if the ThinkPad computer has been attached to a ThinkPad Dock II. v Eject ThinkPad PC from Mini Dock: This button is displayed only if the ThinkPad computer has been docked in a ThinkPad Mini Dock and one or more USB devices have been connected to the ThinkPad Mini Dock. [. . . ] Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's responsibility to evaluate and verify the operation of any other product, program, or service. Lenovo may have patents or pending patent applications covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. [. . . ]