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ibm thinkpad t21 2647 manualWe have 4 IBM ThinkPad T21 manuals available for free PDF download: Hardware Maintenance Manual, User Manual, Setup Manual. Turn everything OFF. First, remove the power cord from First, attach all cables to devices. the outlet. Remove signal cables from receptacles. Attach the signal cables to receptacles. Remove all cables from devices. Attach the power cord to an outlet. Turn the device ON. Lenovo ThinkPad T23 2647: Supplementary Guide. ThinkPad T23 2647 Laptop pdf IBM ThinkPad T23. Identified by model type 2647-4MU.IBM ThinkPad T23 troubleshooting, repair, and service manuals. Free download of IBM ThinkPad T21 User Manual.Reload to refresh your session. Reload to refresh your session. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy.If you continue browsing the site, you agree to the use of cookies on this website. See our Privacy Policy and User Agreement for details.If you wish to opt out, please close your SlideShare account. Learn more. You can change your ad preferences anytime. Check out, please ? www.HelpWriting.net ?Due to this service you'll save your time and get an essay without plagiarism.Afterwards I also ordered an essay from them and I was very happy with the work I got too.ThinkPad Computer. Hardware Maintenance Manual. April 2002. This manual supports:First Edition (April 2002). The following paragraph does not apply to the United. Kingdom or any country where such provisions areThis publication could include technical inaccuracies orChanges are periodically made to theIBM may makeIt is possible that this publication may contain referencesSuch references or informationRequests for technical information about IBM productsCorporation 2002. All rights reserved.This manual contains service and reference information for. IBM ThinkPad T20, T21, T22, T23 (MT2647, 2648), and. ThinkPad Dock (MT2631) products.http://hoangphatadv.com/admin/images/upload/fckeditor/file/dynatronics-850-manual.xml
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Use this manual alongThe manual is divided into sections as follows:About this manual........... iii. Introduction............. 1. Important service information......... 1Diskette compatibility matrix......... 2. Safety notices: multilingual translations...... 3. Safety information............ 13Laser compliance statement......... 18. General descriptions.......... 21. Read this first............. 21Related service information......... 23Checkout guide............ 32ThinkPad T20, T21, T22 and T23 series..... 39. Product overview............ 41Symptom-to-FRU index.......... 49FRU replacement notices......... 56Removing and replacing a FRU........ 59Locations.............. 140Parts list.............. 143Notices.............. 174Important service informationThe BIOS and device driversStrategy for replacing FRUsUse the following strategy to prevent unnecessary expenseReplace onlyAttention: The setup configuration on the computer youAutomatic Configuration may alter the settings. Note theStrategy for replacing a hard-disk drive. Always try to run a low-level format before replacing aAttention: The drive startup sequence in the computerBe extremelyHow to use error messages. Use the error codes displayed on the screen to diagnoseWhatever causes theDiskette compatibility matrix. The compatibility of each of the drives with the diskettesSafety notices: multilingual translations. In this manual, safety notices appear in English with aThe following safety notices are provided in English. French, German, Italian, and Spanish.http://ivankotov.ru/img/lib/dynaudio-bm14s-manual.xml Safety notice 1Metallic parts or metalPour ce faire, secouez l’unite etVerificare cioLas piezas metalicasSafety notice 2Use only theNe les demontez pas, ne lesPour les mettreUne batterie ou uneSie darf nur durchSie darf nicht zerlegt,Die Batterie kannDer Einsatz falscherAlcune batterie di riserva contengono una piccolaNon smontarle,Quando si sostituisce laL’impiego di unaAlgunas baterias de reserva contienen unaDesechelas tal comoUtilice solo baterias queLa utilizacionSafety notice 3Ne la demontez pas,Ne la mettez pasEn effet, une batterieQuando si sostituisce laL’impiego di unaDesechelas talUtilice soloLa utilizacion de una bateria noSafety notice 4Batterien dieses TypsAuch darf ihr Inhalt nichtSmaltirla secondoL’impiego di unaSafety notice 5Consultez un medecin si desWenn der BildschirmObtenga atencion medica siSafety notice 6Safety notice 7Safety notice 8Safety information. The following section presents the safety information thatGeneral safety. Follow these rules to ensure general safety:Never move suddenly orDo not attempt to lift anyMake sure that your sleevesIf your hairElectrical safety. Observe the following rules when working on electricalDo not use thisIf an electricalBy observing the aboveThe surface isSafety inspection guide. The purpose of this inspection guide is to assist you inAs each machineThis guide addresses only those items. You should useIf any unsafe conditions are present, you must determineConsider these conditions and the safety hazards theyTo determine whether there are any potentially unsafeChecklist:Disconnect the power cord.Handling devices that are sensitive toAny computer part containing transistors or integratedProtect against ESDWhen handling ESD-sensitive parts:The mat is especially usefulYou can use coax orGrounding requirements. Electrical grounding of the computer is required forLaser compliance statement. Some IBM Personal Computer models are equipped fromCD-ROM drive or a DVD-ROM drive.http://superbia.lgbt/flotaganis/1649297986 They are also soldThe drive is certified in the U.S. toElsewhere, the drive is certified to conform to theCommission (IEC) 825 and CENELEC EN 60 825 for. Class 1 laser products.When a CD-ROM drive, DVD drive or the other laserOpening the CD-ROM drive, DVD-ROM drive or the otherThere are no serviceable partsSome CD-ROM drives, DVD-ROM drives, or other opticalNao olhe fixo noEvitez de fixerNicht direktNe nezzen bele se szabadNo mire fijamente niThis chapter includes descriptions for any ThinkPad modelRead this first. Before you go to the checkout guide, be sure to read thisIf you selectSingle failuresIf you suspect that aWhat to do first. When you do return a FRU, you must include the followingNote for warranty. During the warranty period, the customer may beThe following list providesBefore checking problems with the computer, determineThe following are not covered under warranty:The following symptoms might indicate damageRelated service information. This section provides information about the following:Service web site. When the latest maintenance diskette and the systemRestoring the preloaded system. If the data on a hard-disk drive is damaged or accidentallyTo restore the pre-installed software, you can use eitherOrder the recoveryThe Product Recovery program is in the service partition, aWindows Explorer. Attention: All of the files on the primary hard-diskCreating a Recovery Repair diskette. If the operating system cannot boot normally, or if youYou must press F11Product Recovery program. Note: The recovery process might take up to 2 hours. To use the Product Recovery program to restore theIf you are using Windows XP,One of them is “Press F11Using the recovery CD. To create the service partition and install the preloadedTo create the service partition:You may be prompted toInstall preloaded system from CD:Reinstall theTo use the Recovery Repair diskette:Passwords. As many as three passwords may be needed for any.http://idc504.com/images/c8180-repair-manual.pdf ThinkPad computer: the power-on password (POP), theException: If only an SVP is installed, the passwordPower-on password. A power-on password (POP) protects the system fromHard-disk password. There are two hard-disk passwords (HDPs):Note: There are two modes for the HDP: User only andAttention: If the user HDP has been forgotten, checkIf it has, it can beIf no master HDP isSupervisor password. A supervisor password (SVP) protects the systemSetup Utility and make changes to system configurationAttention: If the SVP has been forgotten and cannot beThe system board mustHow to remove the power-on password. To remove a POP that you have forgotten, do theHow to remove the hard-disk password. Attention: If User only mode is selected and the user. HDP has been forgotten and cannot be made available toThe hard-disk drive can be replaced for a scheduled fee. To remove a user HDP that has been forgotten, when the. SVP and the master HDP are known, do the following:A pop-up window opens.Power management. To reduce power consumption, the computer has threeScreen blank mode. Screen blank mode has three variants, as follows:To end screen blank mode and resume normal operation,Standby mode. When the computer enters standby mode, the followingIn certain circumstances, the computer goes into standbyNote for the APM operating system. Even if you do not set the low-battery alarm, the chargeThis default low-battery behavior is independent of theIf you are using the ACPI operating system, only theTo cause the computer to return from standby mode andAlso, the computer automatically returns from standbyHibernation modeIf you want toIn hibernation mode, the following occurs:Note: If the computer enters the hibernation mode while itTo cause the computer to enter hibernation mode, do anyAlso, the computer goes into hibernation modeWhen the power is turned on, the computer returns fromThe hibernationCheckout guide.https://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1629b709cad5a6---Cox-scorpion-manual.pdf Use the following procedures as a guide in identifying andNote: The diagnostic tests are intended to test only IBMTesting the computer. The ThinkPad computer has a test program calledPC-Doctor. This section is an overview of the procedure. For details that depend on model-unique functions, refer toFor some possible configurations of the computer. PC-Doctor might not run correctly. To avoid this problem,BIOS Setup Utility before you run PC-Doctor. On the IBM. BIOS Setup Utility screen, press F9, Enter, F10, and then. Enter. Note: When you initialize the computer configuration,PC-Doctor cannot be used to test a device that is in theTo test the Ultrabay 2000To run the test, do as follows. Note: In the following procedure, you can select an itemDiagnostics Interactive TestsNotes:Each key should be held downTo test it, use theSome models do not haveAll Rights Reserved.Press ENTER to select.If there is aNote: After executing PC-Doctor, check the system. Detecting system information with. PC-Doctor. PC-Doctor can detect the following system information. Hardware InfoUtilityPower system checkout. To verify a symptom, do the following:If you suspect a power problem, see the appropriate oneChecking the ac adapter. You are here because the computer fails only when the acTo check the ac adapter, do the following:Note: Noise from the ac adapter does not always indicateChecking operational charging. To check whether the battery charges properly duringPerform operational charging. If the battery status indicatorReinstall the battery pack. IfIf the charge indicator still does not turn on, replace theIf it is stillChecking the battery pack. Battery charging does not start until the Power MeterTo check the status of your battery, move your cursor toPower Meter icon. Note: If the battery pack becomes hot, it may not be ableAfter it cools down,To check the battery pack, do the following:Checking the backup battery. Do the following:Product overview............ 41Symptom-to-FRU index..........faviadating.com/images/userfiles/files/canon-service-manual.pdf 49FRU replacement notices......... 56Removing and replacing a FRU........ 59Locations.............. 140Parts list.............. 143Notices.............. 174Product overview. This section presents the following product-uniqueSpecifications. The following table lists the specifications of the ThinkPad. T20, T21, T22 and T23 series. Feature Description. Processor T20Bus PCI BusMemory T20, T21, T22Feature Description. Memory T20, T21, T22CMOS RAM 242 bytes. Display T20Hard-disk drive T20Feature Description. Internal 56.6 KbpsAudio v Internal microphoneInfrared IrDA 1.1PC Card One Type-III or two Type-II. AC adapter 72-watt type. Bay device T20Status indicators. The system status indicators show the status of theSudden physicalTo enable orIndicator MeaningIf both theFRU Tests. The following table shows the test for each FRU. FRU Applicable testModem 1. Make sure the modem is set up correctly.TrackPoint or If the TrackPoint does not work, check theThis symptomIf the pointer stopsFRU Applicable testMemory 1. If two DIMMs are installed, remove one ofFan 1. Turn on the computer and check the airFn key combinations. The following table shows the function of each combinationKey DescriptionTo return to normalTo return to normalSymptom-to-FRU index. The symptom-to-FRU index in this section lists symptomsThe most likelyNote: Do the FRU replacement or other actions in theThis index can also help you determine, during regularA numeric error is displayed for each error detected in. POST or system operation. In the displays, n can be anyIf no numeric code is displayed, check the narrativeNumeric error codes. Symptom or error FRU or action, in sequenceBad CRC1, stop POSTEAIA data access error—TheInvalid RFID serializationCRC2—The EEPROMInvalid RFID configurationEEPROM checksum is notCritical low-battery error 2. Battery pack.Symptom or error FRU or action, in sequenceRF antenna has been removed password.The computer has been carried password.http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1629b70a5745aa---cox-ride-mower-manual.pdfSecurity hardware tamper Utility by enteringSecurity hardware removed Utility by enteringInvalid remote change the security chip has failed.More than one Ethernet devices device that you installed;Hard disk error—The hard disk drive.Keyboard error keyboard and the auxiliaryMonitor type error—Monitor BIOS Setup Utility.Shadow RAM error—Shadow. RAM fails at offset nnnn.RAM fails at offset nnnn.Now customize the name of a clipboard to store your clips. ThinkPad Computer. This manual supports. ThinkPad T20, T21, T22, T23. ThinkPad Dock (MT2631) Before using this information and the product it First Edition (April 2002). Kingdom or any country where such provisions are This publication could include technical inaccuracies or Changes are periodically made to the IBM may make It is possible that this publication may contain references Such references or information Requests for technical information about IBM products Corporation 2002. All rights reserved. US Government Users Restricted Rights - Use, duplication About this manual. This manual contains service and reference information for. Use this manual along The manual is divided into sections as follows: Important. This manual is intended for trained service Use this manual along with the advanced diagnostic Before servicing an IBM ThinkPad product, be sure. Contents. About this manual iii. Introduction 1. Important service information 1. Strategy for replacing FRUs 1. How to use error messages 2. Diskette compatibility matrix 2. Safety notices: multilingual translations 3. Safety information 13. General safety 13. Electrical safety 14. Safety inspection guide 15. Handling devices that are sensitive to electorostatic Grounding requirements 17. Laser compliance statement 18. General descriptions 21. Read this first 21. What to do first 21. Related service information 23. Service web site 23. Restoring the preloaded system 23. Passwords 26. Power management 28. Checkout guide 32. Testing the computer 33.https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1629b70b0e2c7a---Cox-ride-on-mower-manuals.pdf Detecting system information with PC-Doctor.. 34. Power system checkout 35. ThinkPad T20, T21,T22 and T23 series 39. Product overview 41. Specifications 43. Status indicators 45. FRU Tests 47. Fn key combinations 48. Symptom-to-FRU index 49. Numeric error codes 49. Error messages 52. Beep symptoms 53. No-beep symptoms 53. LCD-related symptoms 54. Intermittent problems 55. Undetermined problems 55. FRU replacement notices 56. Screw notices 56. Retaining serial numbers 57. Removing and replacing a FRU 59 Locations 140. Front view 140. Rear view 141. Bottom view 142. Parts list 143. T20, T21, T22 and T23 series model matrix 146. Overall 147. AC adapters 1 56. LCD FRUs 157. Keyboard 160. Recovery CDs 161. Miscellaneous parts 170. Optional FRUs 171. Common parts list 172. Notices 174. Trademarks 174. Introduction. Important service information. Important. BIOS and device driver fixes are The BIOS and device drivers Advise customers to contact the PC Company. HelpCenter at 800-772-2227 if they need assistance Customers in Canada should call IBM HelpPC at Strategy for replacing FRUs. Before replacing parts. Make sure that all diskette fixes are installed before Use the following strategy to prevent unnecessary expense Replace only Attention: The setup configuration on the computer you Automatic Configuration may alter the settings. Note the Important service information. Strategy for replacing a hard-disk drive. Always try to run a low-level format before replacing a Attention: The drive startup sequence in the computer Be extremely How to use error messages. Use the error codes displayed on the screen to diagnose Whatever causes the Diskette compatibility matrix. The compatibility of each of the drives with the diskettes Diskette Diskette Compatibility Safety notices. Safety notices: multilingual translations. In this manual, safety notices appear in English with a The following safety notices are provided in English. Safety notice 1.cookstownauto.com/uploads/userfiles/files/canon-service-manual-lens.pdf Before the computer is powered-on after FRU Metallic parts or metal Avant de remettre I'ordinateur sous tension apres Pour ce faire, secouez I'unite et Bevor nach einem FRU-Austausch der Computer Computer mu3 geschuttelt und auf Klappergerausche Kurzschliisse erzeugen. Prima di accendere I'elaboratore dopo che e stata Verificare cio Antes de encender el sistema despues de sustituir una. FRU, compruebe que todos los tornillos, muelles y Compruebelo agitando el sistema y escuchando los Las piezas metalicas Introduction 3. Safety notices. Safety notice 2 Use only the Certaines batteries de secours contiennent du Ne les demontez pas, ne les Ne les mettez pas en court-circuit. Pour les mettre Une batterie ou une Die Bereitschaftsbatterie, die sich unter dem. Diskettenlaufwerk befindet, kann geringe Mengen. Nickel und Cadmium enthalten. Sie darf nur durch Die Batterie kann Bestimmungen fur Sondermull beachten. Beim. Ersetzen der Bereitschafts-oder Systembatterie nur. Batterien des Typs verwenden, der in der. Ersatzteilliste aufgefiihrt ist. Der Einsatz falscher. Batterien kann zu Entzundung oder Explosion Safety notices Alcune batterie di riserva contengono una piccola Non smontarle, Quando si sostituisce la L'impiego di una Algunas baterias de reserva contienen una Desechelas tal como Utilice solo baterias que La utilizacion Introduction 5. Safety notice 3 Do not disassemble it, throw it into fire or water, or La batterie contient du nickel. Ne la demontez pas, Ne la mettez pas Lorsque vous remplacez la batterie, veillez a En effet, une batterie Akkus enthalten geringe Mengen von Nickel. Sie Beim Ersetzen der Batterie nur Batterien des Typs Der Einsatz falscher Batterien kann zu Entziindung La batteria contiene piccole quantita di nichel. Non Quando si sostituisce la L'impiego di una Safety notices Las baterias contienen pequenas cantidades de Desechelas tal Utilice solo La utilizacion de una bateria no Safety notice 4 La pile de sauvegarde contient du lithium. Elle I'exposez pas a une temperature superieure a Introduction. Safety notices Die Systembatterie ist eine Lithiumbatterie. Sie Verbrennungen hervorrufen. Batterien dieses Typs Oder verbrannt werden. Auch darf ihr Inhalt nicht Bestimmungen fur Sondermiill beachten. Beim. Ersetzen der Batterie nur Batterien des Typs Der Einsatz falscher Batterien kann zu Entziindung. Oder Explosion fiihren. La batteria di supporto e una batteria al litio e puo Evitare di ricaricarla, smontarne il connettore Smaltirla secondo L'impiego di una La bateria de repuesto es una bateria de litio y Desechela tal como dispone la normativa local. Safety notice 5. If the LCD breaks and the fluid from inside the LCD Si le panneau d'affichage a cristaux liquides se brise et Consultez un medecin si des Die Leuchtstoffrohre im LCD-Bildschirm enthalt. Quecksilber. Bei der Entsorgung die ortlichen. Bestimmungen fur Sondermull beachten. Der. LCD-Bildschirm besteht aus Glas und kann zerbrechen, Computer auf den Boden fallt. Wenn der Bildschirm Kontakt mit Haut und Augen gerat, sollten die Nel caso che caso I'LCD si dovesse rompere ed il Si la LCD se rompe y el fluido de su interior entra en Obtenga atencion medica si Introduction 9. Safety notice 6 Afin d'eviter tout risque de choc electrique, ne Aus Sicherheitsgriinden die Kunststoffabdeckung, Per evitare scosse elettriche, non rimuovere la Para evitar descargas, no quite la cubierta de Safety notices. Safety notice 7 Bien que le voltage des batteries principales soit Obwohl Hauptbatterien eine niedrige Spannung Erdung genug Strom abgeben, urn brennbare. Materialien zu entziinden oder Verletzungen bei. Personen hervorzurufen. Sebbene le batterie di alimentazione siano a basso Aunque las baterias principales tienen un voltaje Introduction 11. Safety notice 8 Avant de retirer une unite remplacable en clientele, Die Stromzufuhr muB abgeschaltet, alio Stromkabel Prima di rimuovere qualsiasi FRU, spegnere il Antes de quitar una FRU, apague el sistema, Safety information. Safety information. The following section presents the safety information that General safety. Follow these rules to ensure general safety: Never move suddenly or Do not attempt to lift any Make sure that your sleeves If your hair Attention: Metal objects are good electrical Introduction 13. Safety information Electrical safety. Observe the following rules when working on electrical Use only approved tools and test equipment. Some Many customers have, near their equipment, rubber Do not use this Find the room emergency power-off (EPO) switch, If an electrical Do not work alone under hazardous conditions or near Disconnect all power before: Before you start to work on the machine, unplug the If you need to work on a machine that has exposed Attention: Another person must be there to switch Attention: An electrical shock can occur only when By observing the above Safety information Observe the special safety precautions when you work The surface is Safety inspection guide. The purpose of this inspection guide is to assist you in As each machine This guide addresses only those items. You should use Introduction 15. If any unsafe conditions are present, you must determine Consider these conditions and the safety hazards they To determine whether there are any potentially unsafe Checklist: Disconnect the power cord. Use a meter to measure third-wire ground Handling devices that are sensitive to Any computer part containing transistors or integrated Protect against ESD. Safety information Notes When handling ESD-sensitive parts: The mat is especially useful Note. The use of a grounding system is desirable but You can use coax or AC-operated computers. Grounding requirements. Electrical grounding of the computer is required for Introduction 17. Laser compliance statement. Some IBM Personal Computer models are equipped from CD-ROM drive or a DVD-ROM drive. They are also sold The drive is certified in the U.S. to Elsewhere, the drive is certified to conform to the Commission (IEC) 825 and CENELEC EN 60 825 for. Class 1 laser products. When a CD-ROM drive, DVD drive or the other laser O uso de controles, ajustes ou desempenho de Pour eviter tout risque d'exposition au rayon laser, Werden Steuer- und Einstellelemente anders als Laserstrahlung auftreten. Az itt eloi'rt eljarasoktol, bealli'tasoktol es vezerlesektol L'utilizzo di controlli, regolazioni o I'esecuzione di Pouzitie kontrol, uprav alebo inych vykonani'od inych El uso de controles o ajustes o la ejecucion de Opening the CD-ROM drive, DVD-ROM drive or the other There are no serviceable parts Introduction 19. Some CD-ROM drives, DVD-ROM drives, or other optical Radiacao por raio laser ao abrir. Nao olhe fixo no Rayonnement laser si carter ouvert. Evitez de fixer Laserstrahlung bei geoffnetem Gerat. Nicht direkt. Oder Liber optische Instrumente in den Laserstrahl Kinyitaskor lezersugar. Ne nezzen bele se szabad Keriilje a Aprendo I'unita vengono emesse radiazioni laser. Non fissare il fascio, non guardarlo direttamente He CMOTpme Ha ziyn, He pa3nrmAbiBaMTe ero. C nOMOLUbK) OnTMHeCKMX MHCTpyMeHTOB, a TaioKe. Ked' je laserova jednotka otvorena. Vyhnite sa priamemu Radiacion laser al abrir. No mire fijamente ni Evite la exposicion directa al haz. General descriptions. This chapter includes descriptions for any ThinkPad model Read this first. Before you go to the checkout guide, be sure to read this Important notes. Only certified trained personnel should Read the entire FRU removal and replacement Use new nylon-coated screws when you Be extremely careful during such write Drives in the computer that you are servicing If you select Replace FRUs only for the correct model. When you replace a FRU, make sure the model A FRU should not be replaced because of a Single failures If you suspect that a. FRU is defective, clear the error log and run the Be careful not to replace a nondefective FRU. What to do first. When you do return a FRU, you must include the following Read this first Note for warranty. During the warranty period, the customer may be The following list provides Before checking problems with the computer, determine The following are not covered under warranty: The following symptoms might indicate damage Related service information. Related service information. This section provides information about the following. Service web site. When the latest maintenance diskette and the system Restoring the preloaded system. If the data on a hard-disk drive is damaged or accidentally To restore the pre-installed software, you can use either When the hard-disk drive is replaced because of a Recovery CD for the computer. Order the recovery. CD and the hard-disk drive at the same time so that The Product Recovery program is in the service partition, a Windows Explorer. Attention: All of the files on the primary hard-disk Creating a Recovery Repair diskette. If the operating system cannot boot normally, or if you General descriptions 23. Related service information You must press F11 Note: If you are prompted to select the operating Enter. Enter. Product Recovery program. To use the Product Recovery program to restore the If you are using Windows XP, While the message is displayed, quickly press F11. If you are using Windows 2000 or another operating F11 before it disappears. Note: If this message is not displayed, you can use a. Recovery Repair diskette to get access to the. Product Recovery program. (For using a Related service information. Note: Network drivers are not automatically restored Note: If you use Windows 2000 or Windows 98, The computer will restart with the pre-installed Using the recovery CD. To create the service partition and install the preloaded To create the service partition: Note: If the hard-disk drive contains any partitions, you Note: If you do not want to create the service partition, The system You may be prompted to Continue to step 6 to install preloaded system. Install preloaded system from CD: Product Recovery program. Reinstall the. General descriptions 25. Related service information Enter to select. To use the Recovery Repair diskette: Passwords. ThinkPad computer: the power-on password (POP), the Exception: If only an SVP is installed, the password Power-on password. A power-on password (POP) protects the system from Hard-disk password. There are two hard-disk passwords (HDPs): Note: There are two modes for the HDP: User only and Related service information. Attention: If the user HDP has been forgotten, check If it has, it can be If no master HDP is Supervisor password. A supervisor password (SVP) protects the system Setup Utility and make changes to system configuration Attention: If the SVP has been forgotten and cannot be The system board must How to remove the power-on password. To remove a POP that you have forgotten, do the After the POST ends, the password prompt does not General descriptions 27. Related service information How to remove the hard-disk password. HDP has been forgotten and cannot be made available to The hard-disk drive can be replaced for a scheduled fee. SVP and the master HDP are known, do the following: Both user HDP and master HDP will have been Power management. To reduce power consumption, the computer has three Notes. Screen blank mode is called standby mode in. Windows 95 and Windows NT. Standby mode is called suspend mode in. Screen blank mode. Screen blank mode has three variants, as follows: Related service information To end screen blank mode and resume normal operation, Standby mode.