How do I clean my keyboard? Hold the keyboard upside down and use a can of compressed air to blow away the dirt. The keys can even be cleaned with a damp cloth. What is bluetooth? Bluetooth is a way of exchanging data wirelessly between electronic devices via radio waves.
The distance between the two devices that exchange data can in most cases be no more than ten metres. What is the weight of the Lenovo ThinkPad R51? The Lenovo ThinkPad R51 has a weight of g. What is the screen size of the Lenovo ThinkPad R51? The screen size of the Lenovo ThinkPad R51 is 15 ". What is the screen resolution of the display of the Lenovo ThinkPad R51?
The screen resolution of the Lenovo ThinkPad R51 is x pixels. This information could include technical inaccuracies or typographical errors.
Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
All rights reserved. You are requested to install and use your ThinkPad computer in strict accordance with the local RF regulations. The notice is included in the package with this publication. The files and programs for these alternative methods are on your hard disk, which eliminates having to locate misplaced CDs and problems associated with using an incorrect CD version.
The complete backup of all the files and programs that IBM preinstalled on your computer resides in a hidden section, or partition, of the hard disk.
Although hidden, the backups in the partition consume hard disk space. Therefore, when checking the capacity of your hard disk according to Windows, you might note that the total capacity of the disk appears to be smaller than anticipated. This discrepancy is explained by the contents of the hidden partition. For more information about recovering your hard disk to the original preinstalled contents, refer to your on-system help source, Access IBM. Press the blue Access IBM button or click the Access IBM icon on your desktop, and then browse the Learn section for various topics that cover backing up and recovering.
The blue Access IBM button can help you in many situations when your computer is working normally; and even when it is not. Access IBM is your on-board computer help center that brings you informative illustrations and easy-to-follow instructions for getting started and staying productive. Some of the topics in your help system contain brief video clips that show you how to perform certain tasks, such as replacing your battery, inserting a PC Card, or upgrading your memory.
Use the controls shown to play, pause, and rewind the video clip. Important regulatory notice for users. A system designed for a slower memory speed may be able to utilize faster memory, but will only operate at the slower speed. Though your computer is designed to function reliably in normal work environments, you need to use common sense in handling it. By following these important tips, you will get the most use and enjoyment out of your computer.
Your computer dissipates some heat during normal operation. This heat is a function of the level of system activity and battery charge level. Extended contact with your body, even through clothing, could cause discomfort or, eventually, a skin burn. Do not open the display beyond degrees, as this might damage the computer hinge. This will prevent damage to the hard disk drive and data loss. Do not pick up or hold your computer by the display.
Do not pack your computer in a tightly packed suitcase or bag. If you forget a supervisor or hard disk password, IBM will not reset it, and you might have to replace your system board or hard disk drive.
Do not connect the modem to a PBX private branch exchange or any other digital telephone extension line because this could damage your modem.
Analog phone lines are often used in homes, while digital phone lines are often used in hotels or office buildings. If you are not sure which kind of phone line you are using, contact your telephone company. If so, be sure to connect your communication cable to the correct one, so your connector is not damaged.
This can help authorities return your computer to you if it is lost or stolen. Registering your computer also enables IBM to notify you about possible technical information and upgrades. This could break the adapter plug. Prepare a mixture of a gentle kitchen-use detergent one that does not contain abrasive powder or strong chemicals such as acid or alkaline.
Use 5 parts water to 1 part detergent. Absorb the diluted detergent into a sponge. Squeeze excess liquid from the sponge. Wipe the cover with the sponge, using a circular motion and taking care not to let any excess liquid drip. Wipe the surface to remove the detergent. Rinse the sponge with clean running water. Wipe the cover with the clean sponge. Wipe the surface again with a dry, soft lint-free cloth. Wait for the surface to dry completely and remove any fibers from the cloth.
Absorb some isopropyl rubbing alcohol on a soft, dust-free cloth. Wipe the keytop surface with the cloth, ensuring no liquid drips on or between the keys. You can use compressed air to remove any crumbs and dust from beneath the keys. Note: Avoid spraying cleaner directly on the display or the keyboard. Gently wipe the display with a dry, soft lint-free cloth.
If you see a scratchlike mark on your display, it might be a stain transferred from the keyboard or the TrackPoint pointing stick when the cover was pressed from the outside.
Wipe or dust the stain gently with a soft, dry cloth. If the stain remains, moisten a soft, lint-free cloth with water or a mixture of isopropyl alcohol and water that does not contain impurities. Wring out as much of the liquid as you can. Wipe the display again; do not let any liquid drip into the computer.
Be sure to dry the display before closing it. To run PC-Doctor for Windows, do as follows:. Click Start. Programs and then to PC-Doctor for Windows.
Click PC-Doctor. Choose one of the tests, from either Device Categories or Test Scripts. Running any tests may take up to several minutes or longer.
Make sure you have time to run the entire test; do not interrupt the test while it is running. The System Test of the Test Scripts runs some tests of critical hardware components, but it does not run all of the diagnostic tests in PC-Doctor for Windows. If you are preparing to contact IBM for support, be sure to print the test log so that you can rapidly provide information to the help technician. If you do not find your problem here, refer to Access IBM, your on-board help system.
The following section only describes problems that might prevent you from accessing this help system. In the charts, x can be any character. Note: This will permanently erase the entire contents of the hard disk,. When I turn on the machine, nothing appears on the screen and the machine does not beep while starting up.
Note: If you are not sure whether you heard any beeps, turn off the computer; then turn it on again, and listen again. If a power-on password is set, press any key to display the power-on password prompt, and then type the correct password and press Enter. If the power-on password prompt does not appear, the brightness level might be set to minimum brightness.
Turn on the power switch again for confirmation. If these items are properly set, and the screen remains blank, have the computer serviced. When I turn on the machine, nothing appears on the screen, but I hear two or more beeps.
Make sure that the memory card is installed correctly. If it is, but the screen is still blank, and you hear five beeps, have the computer serviced.
Reinstall your operating system, and turn on the computer. If you still see only the pointer on the screen, have the computer serviced. Your screen saver or power management may be enabled. Do one of the following to exit from the screen saver or to resume from standby or hibernation mode:. This is to maintain compatibility with other DOS applications. To expand the screen image to the same size as the actual screen, start the ThinkPad Configuration Program and click LCD ; then select the Screen expansion function.
The image might still look slightly distorted. If you forgot your power-on password, you must take your computer to an IBM authorized servicer or marketing representative to have the password canceled. If you forgot your hard disk password, IBM will not reset your password or recover data from the hard disk. You must take your computer to an IBM authorized servicer or an IBM marketing representative to have the hard disk drive replaced.
Proof of purchase is required, and a fee will be charged for parts and service. If you forgot your supervisor password, IBM will not reset your password.
You must take your computer to an IBM authorized servicer or IBM marketing representative to have the system board replaced. Turn off the computer by pressing and holding the power switch for 4 seconds or more.
If the computer is still not reset, remove the ac adapter and the battery. If the problem occurred immediately after the computer returned from standby mode, enter the power-on password if one has been set. If an external keyboard is connected, the numeric keypad on your computer does not work.
Use the numeric keypad on the external keyboard. Remove the external numeric keypad or the mouse. Turn on the computer and try using the keyboard again. If the keyboard problem is resolved, carefully reconnect the external numeric keypad, external keyboard, or mouse, making sure that you have seated the connectors properly. The numeric lock function is on. To disable it, press and hold Shift; then press NumLk. Make sure that the external numeric keypad is correctly connected to the computer.
If the connection is correct, disconnect the cable and make sure that the built-in keyboard operates properly. If the built-in keyboard works, there is a problem with the external keyboard. Try using a different external keyboard. The pointer drifts when the computer is turned on or after it resumes normal operation. The pointer might drift when you are not using the TrackPoint during normal operation.
This is a normal characteristic of the TrackPoint and is not a defect. Pointer drifting might occur for several seconds under the following conditions:.
If the TrackPoint works, the error might be due to the mouse. Note: For more information, see the manual supplied with the mouse. If the processor overheats, the computer automatically enters standby mode to allow the computer to cool and to protect the processor and other internal components.
Also, check the settings for standby mode, using Battery MaxiMiser. The computer enters standby mode immediately after Power-on self-test POST the standby indicator light turns on. The critical low-battery error message is displayed, and the computer immediately turns off. The battery power is getting low. Connect the ac adapter to the computer, or replace the battery with a fully charged one. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
Use product-specific ESD procedures when they exceed the requirements noted here. Most clothing is insulative and retains a charge even when you are wearing a wrist strap. The mat is especially useful when handling ESD-sensitive devices. The use of a grounding system to guard against ESD damage is desirable but not necessary. You can use coax or connector-outside shells on these systems.
Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician. Such devices are also sold separately as options. If one of these drives is installed, it is certified in the U. Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure.
There are no serviceable parts inside those drives. Do not open. Note the following:. Emits visible and invisible laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam. Rayonnement laser si carter ouvert. Some descriptions might not apply to your particular computer. Drives in the computer that you are servicing sequence might have been altered.
If you select an incorrect drive, data or programs might be overwritten. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Consider replacing a FRU only when a problem recurs.
If you suspect that a FRU is defective, clear the error log and run the test again. If the error does not recur, do not replace the FRU. When you do return a FRU, you must include the following information in the parts exchange form or parts return form that you attach to it:. During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer.
Following is a list of some common items that are not covered under warranty and some symptoms that might indicate that the system was subjected to stress beyond normal use. Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list:. The following symptoms might indicate damage caused by nonwarranted activities:. When the hard disk drive is replaced because of a failure, no Product Recovery program is on the new hard disk.
In this case, you must use the recovery CD for the computer. Order the recovery CD and the hard disk drive at the same time so that you can recover the new hard disk drive with the pre-installed software when they arrive. To create the service partition and install the factory contents from the recovery CD, do the following:.
Press Y key. The service partition is created and loaded with the Product Recovery program files. At next window, press Enter to continue. The system automatically reboots during this process. You may be prompted to change CDs.
If you get a message asking which operating system to install, select the proper operating system and press Enter. Press Enter to select. On each of the next three windows, press the Y key. Follow the prompts to complete the recovery. If any of these passwords has been set, a prompt for it appears on the screen whenever the computer is turned on. The computer does not start until the password is entered. Exception: If only an SVP is installed, the password prompt does not appear when the operating system is booted.
A power-on password POP protects the system from being powered on by an unauthorized person. The password must be entered before an operating system can be booted.
The system administrator then provides the user HDP to the system user. If it has, it can be used for access to the hard disk drive. The hard disk drive can be replaced for a scheduled fee. Attention: If the SVP has been forgotten and cannot be made available to the servicer, there is no service procedure to reset the password. The system board must be replaced for a scheduled fee.
Turn on the computer and wait until the POST ends. After the POST ends, the password prompt does not appear. The POP has been removed. Reinstall the backup battery and the battery pack. Enter the SVP. Double-click Start setup utility. Select Security , using the cursor keys to move down the menu. Select Password. Select Power-On Password. When the Enter New Password field opens, leave it blank and press Enter twice.
In the Changes have been saved window, press Enter. Press F10; then, in the Setup confirmation window, select Yes. IBM Rescue and Recovery screen opens. For the other models, enter the POP. If Using Passphrase item is displayed in the menu, this function is available on the ThinkPad computer. The system Restart Required window is displayed. Click Yes. Select Security , using the cursor directional keys to move down the menu. Attention: If User only mode is selected and the user HDP has been forgotten and cannot be made available to the servicer, IBM does not provide any services to reset the user HDPs or to recover data from the hard disk drive.
Select Start setup utility. Select Hard-disk x password , where x is the letter of the hard disk drive. A pop-up window opens. Select Master HDP.
Select Yes in the Setup Configuration window. For the other models, enter the master HDP. To reduce power consumption, the computer has three power management modes: screen blank, standby, and hibernation. When the computer enters standby mode, the following events occur in addition to what occurs in screen blank mode:.
To cause the computer to return from standby mode and resume operation, do one of the following:. Also, in either of the following events, the computer automatically returns from standby mode and resumes operation:. Note: The computer does not accept any input immediately after it enters standby mode. Wait a few seconds before taking any action to reenter operation mode. Note: If the computer enters the hibernation mode while it is docked to the docking station, do not undock it before resuming normal operation.
If you do undock it and then try to resume normal operation, you will get an error message, and you will have to restart the system. Also, the computer goes into hibernation mode automatically in either of the following conditions:. When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard disk drive is read, and system status is restored from the hard disk drive.
Use the following procedures as a guide in identifying and correcting problems with the ThinkPad computer. Note: The diagnostic tests are intended to test only IBM products. The use of non-IBM products, prototype cards, or modified options can lead to false indications of errors and invalid system responses. Identify the failing symptoms in as much detail as possible.
Verify the symptoms. Try to re-create the failure by running the diagnostic test or by repeating the operation. You can detect errors by running the diagnostics test included in PC-Doctor. This section is an overview of the procedure. For some possible configurations of the computer, PC-Doctor might not run correctly.
Note: When you initialize the computer configuration, some devices are disabled, such as the serial port. If you test one of these devices, you will need to enable it by using PS2. PC-Doctor cannot be used to test a device that is in the docking station, even if the computer supports the docking station.
A batch file automatically starts up to prompt you through the process of creating diskettes. You are notified of how many diskettes you will need.
You are prompted to insert each diskette in sequence. Typically, all you need to do is to press the Enter key for the floppy drive; the system then formats and creates the diskette. As soon as all the diskettes have been created, the ThinkPad computer reboots. You then receive a message asking you to remove the last diskette from the drive or, if you want to run the diagnostics, to insert the first diskette. Note: In the following procedure, you can select an item not only with the arrow keys, but also with the TrackPoint pointer.
Instead of pressing Enter, click the left button. Insert the PC-Doctor disk into the diskette drive; then power on the computer. On the first screen, select the model and press Enter. Follow the instructions on the screen. The main panel of PC-Doctor appears. Select Diagnostics with the arrow keys, and press Enter. Note: PC-Doctor menu does not mean the formal support device list. Some unsupported device names may appear in the PC-Doctor menu.
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