ibm thinkpad t61p service manual
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ibm thinkpad t61p service manualAll rights reserved. LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted rights to use, reproduction and disclosure. The BIOS and device drivers are posted on the customer support site support Advise customers to contact the Customer Support Center at 800-426-7378 if they need assistance in obtaining or installing any software fixes, drivers, and BIOS downloads. Custom Model Variant (CMV) This is a unique configuration that has been negotiated between IBM or Lenovo and the customer. A unique 4-digit MT and 3-digit model is provided to the customer to place orders (Example: 1829-W15). Products sold in 2005 and 2006, will contain some RoHS compliant FRUs. Do not disassemble a standby battery, recharge it, throw it into fire or water, or short-circuit it. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Do not disassemble it, throw it into fire or water, or short-circuit it. Dispose of the battery pack as required by local ordinances or regulations. Use only the battery in the appropriate parts listing when replacing the battery pack. Dispose of the battery as required by local ordinances or regulations. Seek medical care if any symptoms from the fluid are present after washing.General safety Follow these rules to ensure general safety: v Observe good housekeeping in the area of the machines during and after maintenance. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges.http://www.rsfa.in/websites6/rklsteelferro/uploads/dyson-ball-dc15-manual.xml
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Handling devices that are sensitive to electrostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD.) ESD damage can occur when there is a difference in charge between objects. Such devices are also sold separately as options. If one of these drives is installed, it is certified in the U.S. Note the following: DANGER 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. Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list: The following are not covered under warranty: v LCD panel cracked from the application of excessive force or from being. The final recovery disc may be safely removed during this time, but may also be left in the optical drive since it is not bootable. 7. If no master HDP is available, neither Lenovo nor Lenovo authorized servicers provide any services to reset either the user or the master HDP, or to recover data from the hard disk drive. The utility is available on the following Web site: PC-Doctor cannot be used to test a device that is in the ThinkPad Advanced Dock, even if the computer supports the ThinkPad Advanced Dock. Instead of pressing Enter, click the left button. 1. Insert the PC-Doctor disk into the diskette drive; then power on the computer. If the computer cannot be powered on, go to “Power system checkout”. Select one of the categories listed below to display symptoms and solutions: v CHECK SYSTEM HEALTH v SYSTEM AND DEVICE TESTS v LENOVO TROUBLESHOOTING v CENTER v SYSTEM REPORTS v UPDATES AND SUPPORT Power system checkout To verify a symptom, do the following: 1. Blinking green: Data is being transmitted. Wireless PAN Green: status Wireless PAN (Bluetooth wireless or Wireless USB) is operational.http://swampseafood.com/userfiles/dyson-ball-dc24-instruction-manual.xml Instead, a message box pops up when the process is completed; then the indicator turns off. ThinkPad T61 and T61p (15.4-inch widescreen) When you press this combination, a panel for selecting a power scheme appears. To return to normal operation, press the power button for less than four seconds.ThinkPad T61 and T61p (15.4-inch widescreen) Critical low-battery error 2. Battery pack. 0191 1. Run BIOS Setup Utility, and then save System Security—Invalid Remote Change current setting by pressing F10. requested. Ensure that your HDD is supported non-IBM or non-Lenovo hard disk drive on this system and that the latest HDD (HDD), or an old generation IBM HDD firmware is installed. Excluded from boot order.ThinkPad T61 and T61p (15.4-inch widescreen) FRU replacement should be considered only when a problem recurs. Retaining serial numbers This section includes the following descriptions: v “Restoring the serial number of the system unit” on page 54 ThinkPad T61 and T61p (15.4-inch widescreen) These numbers need to remain the same throughout the life of the computer. If the system board is inoperable, this will not be possible. ThinkPad T61 and T61p (15.4-inch widescreen) Be sure to observe the following general rules: 1. Do not try to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts. Then make sure that the battery release lever is in the locked position. ThinkPad T61 and T61p (15.4-inch widescreen) In step 2, pull the lever a little to release the device from the bay. Step Screw (quantity) Color Torque Hard disk drive screw, nylon-coated (1) Black 0.167 Nm (1.7 kgfcm) (continued) ThinkPad T61 and T61p (15.4-inch widescreen) When installing: The rubber rails on the hard disk drive must be attached to the replacement drive. Otherwise the drive cannot be installed properly. Then fasten the four screws to secure the palm rest. ThinkPad T61 and T61p (15.http://eco-region31.ru/bosch-pst-800-pel-manual4-inch widescreen) Press the DIMM firmly, and pivot it until it snaps into the place. ThinkPad T61 and T61p (15.4-inch widescreen) MT 6463, 6464, 6465, 6466, 6467, 6478, 6471, 6457, 6458, 6459, 6460, 6461, 6462, and 6470. When installing: Make sure that the modem connector and the connector on the underside of the card are attached firmly. MT 6463, 6464, 6465, 6466, 6467, 6478, 6471, 6457, 6458, 6459, 6460, 6461, 6462, and 6470. If the computer you are servicing has three cables, put the white cable in the cable bag in the card slot. MT 6463, 6464, 6465, 6466, 6467, 6478, 6471, 6457, 6458, 6459, 6460, 6461, 6462, and 6470. ThinkPad T61 and T61p (15.4-inch widescreen) Cable routing: When you install the the card, route the antenna cables as shown in this figure. ThinkPad T61 and T61p (15.4-inch widescreen) When installing: Make sure that the speaker connector is attached firmly, and the cables are routed as in this figure. Improper handling of the fan can cause distortion or deformation and imperfect contact with components.ThinkPad T61 and T61p (15.4-inch widescreen) Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. 2. Make sure that the LCD connector is attached firmly. ThinkPad T61 and T61p (15.4-inch widescreen) For the location of each label, refer the following figure: ThinkPad T61 and T61p (15.4-inch widescreen) When installing: Make sure the connectors are attached firmly, and that the cables are routed as in the figure above. (continued) ThinkPad T61 and T61p (15.4-inch widescreen) Then secure the system board with the screws. ThinkPad T61 and T61p (15.4-inch widescreen) Peel off the covering film of the adhesive tape on bottom side of the cushion, and paste it on the new structure frame as shown in this figure. Attention: Do not apply physical shock to the computer while the test is running. ThinkPad T61 and T61p (15.4-inch widescreen) ThinkPad T61 and T61p (15.http://geemarco.com/images/ca-arcserve-16.5-manual.pdf4-inch widescreen) Detach the latches on the top, left, and right edge of the LCD front bezel in the direction of arrow 7 as shown in this figure. (continued) ThinkPad T61 and T61p (15.4-inch widescreen) When installing: Attach the LCD cover kit as follows: 1. Place the LCD front bezel so that the LCD latch levers fit into the holes of the bezel 1. ThinkPad T61 and T61p (15.4-inch widescreen) Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. ThinkPad T61 and T61p (15.4-inch widescreen) ThinkPad T61 and T61p (15.4-inch widescreen) Users of this document should verify the applicable data for their specific environment. The BIOS and device drivers are posted on the customer support site support Advise customers to contact the Customer Support Center at 800-426-7378 if they need assistance in obtaining or installing any software fixes, drivers, and BIOS downloads. Custom Model Variant (CMV) This is a unique configuration that has been negotiated between IBM or Lenovo and the customer. Bluetooth status Green: Bluetooth wireless is operational. This indicator is on when Bluetooth wireless is on and not in suspend mode. Instead, a message box pops up when the process is completed; then the indicator turns off. ThinkPad T61 and T61p (14.1-inch) When you press this combination, a panel for selecting a power scheme appears. To return to normal operation, press the power button for less than four seconds.ThinkPad T61 and T61p (14.1-inch) Critical low-battery error 2. Battery pack. 0191 1. Run BIOS Setup Utility, and then save System Security—Invalid Remote Change current setting by pressing F10. requested. Ensure that your HDD is supported non-IBM or non-Lenovo hard disk drive on this system and that the latest HDD (HDD), or an old generation IBM HDD firmware is installed. Excluded from boot order.ThinkPad T61 and T61p (14.1-inch) FRU replacement should be considered only when a problem recurs.http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1629c4a89e103a---Cp2025-manual-duplex.pdf Retaining serial numbers This section includes the following descriptions: v “Restoring the serial number of the system unit” on page 54 ThinkPad T61 and T61p (14.1-inch) These numbers need to remain the same throughout the life of the computer. If the system board is inoperable, this will not be possible. ThinkPad T61 and T61p (14.1-inch) Be sure to observe the following general rules: 1. Do not try to service any computer unless you have been trained and certified. ThinkPad T61 and T61p (14.1-inch) Step Screw (quantity) Color Torque Hard disk drive screw, nylon-coated (1) Black 0.167 Nm (1.7 kgfcm) (continued) ThinkPad T61 and T61p (14.1-inch) When installing: The rubber rails on the hard disk drive must be attached to the replacement drive. MT 8895, 8896, 8897, 8898, 8899, 8900, and 8938. Press the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly fixed in the slot and does not move easily. ThinkPad T61 and T61p (14.1-inch) ThinkPad T61 and T61p (14.1-inch) When installing: Make sure that the modem connector and the connector on the underside of the card are attached firmly. ThinkPad T61 and T61p (14.1-inch) After you secure the card, make sure that the antenna cables are routed as shown in the each figure. ThinkPad T61 and T61p (14.1-inch) Any other battery could ignite or explode. For access, remove these FRUs in order: v “1010 Battery pack” on page 57 v “1040 Palm rest or palm rest with fingerprint reader”. ThinkPad T61 and T61p (14.1-inch) Then remove the keyboard bezel in the direction shown by arrow 6. When installing: Make sure that all the claws are attached firmly. Then fasten the screws to secure the keyboard bezel. ThinkPad T61 and T61p (14.1-inch) Improper handling of the fan can cause distortion or deformation and imperfect contact with components. ThinkPad T61 and T61p (14.1-inch) Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component.AVE-FRANCE.COM/pics/files/Canon-inkjet-s300-manual.pdf ThinkPad T61 and T61p (14.1-inch) When installing: Do not pinch the antenna cables when you attach the LCD connector. (continued) ThinkPad T61 and T61p (14.1-inch) Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. 2. It must be housed in its position as shown in the figure a. ThinkPad T61 and T61p (14.1-inch) When you replace the base cover, you need to apply the following labels: Windows license label (COA) FCC label Product label. ThinkPad T61 and T61p (14.1-inch) When installing: Make sure the connectors are attached firmly, and that the cables are routed as in the figure above. (continued) ThinkPad T61 and T61p (14.1-inch) Then attach the CPU support plate 1. 2. Secure the screws in order as shown in this figure. Attention: Do not use an electric screwdriver to secure these screws. ThinkPad T61 and T61p (14.1-inch) ThinkPad T61 and T61p (14.1-inch) Detach the LCD rear cover a little as shown in step 3 of this figure, and detach the rear edge of the LCD rear cover 4. (continued) ThinkPad T61 and T61p (14.1-inch) Detach the latches on the top, left, and right edge of the LCD front bezel in the direction of arrow 7 as shown in this figure. Then align the front edge of the bezel to the frame, and attach the latches 2. (continued) ThinkPad T61 and T61p (14.1-inch) MT 8895, 8896, 8897, 8898, 8899, 8900, and 8938. ThinkPad T61 and T61p (14.1-inch) ThinkPad T61 and T61p (14.1-inch) LCD unit (see “LCD FRUs” on page 126.) Keyboard bezel assembly 42W3659 Palm rest assembly without fingerprint reader, with IBM 42W2956 logo v 8895-CTO v 8896-CTO v 8897-CTO, 54x v 8898-CTO, 2Hx v 8899-CTO. Users of this document should verify the applicable data for their specific environment. Please check your inbox, and if you can’t find it, check your spam folder to make sure it didn't end up there. Please also check your spam folder. All rights reserved. GSA ?https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1629c4a8ddaf84---cp2025-manual-service.pdf contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No.Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Never move suddenly or twist when you attempt to lift. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it. Replace any safety device that is worn or defective. Do not obstruct fan louvers or cover them with labels or stickers. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Do not use this type of mat to protect yourself from electrical shock. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly. If you cannot unplug it, ask the customer to power-off the wall box that supplies power to the machine, and to lock the wall box in the off position. By observing the above rule, you may prevent a current from passing through your body. Use extreme care when measuring high voltages. First, check that it has been powered off. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. The surface is conductive; such touching can cause personal injury and machine damage. As each machine was designed and built, required safety items were installed to protect users and service personnel from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-ThinkPad features or options not covered by this inspection guide. Begin the checks with the power off, and the power cord disconnected. Disconnect the power cord. Use a meter to measure third-wire ground continuity for 0.1 ohm or less between the external ground pin and the frame ground.http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1629c4a997ac20---Cp2025-manual-feed.pdf Use good judgment as to the safety of any non-ThinkPad alterations. 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. 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. You can use coax or connector-outside shells on these systems. Proper grounding of the electrical outlet can be verified by a certified electrician. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts. Pour ce faire, secouez l’unite et assurez-vous qu’aucun bruit suspect ne se produit. Des pieces metalliques ou des copeaux de metal pourraient causer un court-circuit. Der Computer mu? geschuttelt und auf Klappergerausche gepruft werden. Metallteile oder-splitter konnen Kurzschlusse erzeugen. Verificare cio scuotendo l’elaboratore e prestando attenzione ad eventuali rumori; eventuali parti o pezzetti metallici possono provocare cortocircuiti pericolosi. Compruebelo agitando el sistema y escuchando los posibles ruidos que provocarian. Las piezas metalicas pueden causar cortocircuitos electricos. Do not disassemble a standby battery, recharge it, throw it into fire or water, or short-circuit it. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery. Ne les demontez pas, ne les rechargez pas, ne les exposez ni au feu ni a l’eau. Ne les mettez pas en court-circuit. Pour les mettre au rebut, conformez-vous a la reglementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle de l’horloge temps reel, veillez a n’utiliser que les modeles cites dans la liste de pieces detachees adequate. Une batterie ou une pile inappropriee risque de prendre feu ou d’exploser.AVANDCIE-ENERGY.COM/ckfinder/userfiles/files/Canon-inkjet-pixma-ip8500-manual.pdf Sie darf nur durch die Verkaufsstelle oder den IBM Kundendienst ausgetauscht werden. Sie darf nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Die Batterie kann schwere Verbrennungen oder Veratzungen verursachen. Bei der Entsorgung die ortlichen Bestimmungen fur Sondermull beachten. Beim Ersetzen der Bereitschafts-oder Systembatterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgefuhrt ist. Der Einsatz falscher Batterien kann zu Entzundung oder Explosion fuhren. Non smontarle, ricaricarle, gettarle nel fuoco o nell’acqua ne cortocircuitarle. Quando si sostituisce la batteria dell’RTC (real time clock) o la batteria di supporto, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo parti. L’impiego di una batteria non adatta potrebbe determinare l’incendio o l’esplosione della batteria stessa. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Desechelas tal como dispone la normativa local. Utilice solo baterias que se encuentren en la lista de piezas. La utilizacion de una bateria no apropiada puede provocar la ignicion o explosion de la misma. Do not disassemble it, throw it into fire or water, or short-circuit it. Use only the battery in the appropriate parts listing when replacing the battery pack. Use of an incorrect battery can result in ignition or explosion of the battery. Ne la demontez pas, ne l’exposez ni au feu ni a l’eau. Ne la mettez pas en court-circuit. Pour la mettre au rebut, conformez-vous a la reglementation en vigueur. Lorsque vous remplacez la batterie, veillez a n’utiliser que les modeles cites dans la liste de pieces detachees adequate. En effet, une batterie inappropriee risque de prendre feu ou d’exploser. Sie durfen nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgefuhrt ist. Der Einsatz falscher Batterien kann zu Entzundung oder Explosion fuhren. Non smontarla, gettarla nel fuoco o nell’acqua ne cortocircuitarla. Quando si sostituisce la batteria, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo parti. Utilice solo baterias que se encuentren en la lista de piezas al sustituir la bateria. La utilizacion de una bateria no apropiada puede provocar la ignicion o explosion de la misma. Dispose of the battery as required by local ordinances or regulations. Use of an incorrect battery can result in ignition or explosion of the battery. Elle presente des risques d’incendie, d’explosion ou de brulures graves. Ne la rechargez pas, ne retirez pas son connecteur polarise et ne la demontez pas. Mettez la pile au rebut conformement a la reglementation en vigueur. Une pile inappropriee risque de prendre feu ou d’exploser. Sie kann sich entzunden, explodieren oder schwere Verbrennungen hervorrufen. Batterien dieses Typs durfen nicht aufgeladen, zerlegt, uber 100 C erhitzt oder verbrannt werden. Auch darf ihr Inhalt nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung angebrachte Verbindungsstecker entfernt werden. Der Einsatz falscher Batterien kann zu Entzundung oder Explosion fuhren. Evitare di ricaricarla, smontarne il connettore polarizzato, smontarla, riscaldarla ad una temperatura superiore ai 100 gradi centigradi, incendiarla o gettarla in acqua. L’impiego di una batteria non adatta potrebbe determinare l’incendio o l’esplosione della batteria stessa. Desechela tal como dispone la normativa local. Seek medical care if any symptoms from the fluid are present after washing. Consultez un medecin si des symptomes persistent apres le lavage. Bei der Entsorgung die ortlichen Bestimmungen fur Sondermull beachten. Der LCD-Bildschirm besteht aus Glas und kann zerbrechen, wenn er unsachgema.Wenn der Bildschirm beschadigt ist und die darin befindliche Flussigkeit in Kontakt mit Haut und Augen gerat, sollten die betroffenen Stellen mindestens 15 Minuten mit Wasser abgespult und bei Beschwerden anschlie?end ein Arzt aufgesucht werden. Obtenga atencion medica si se presenta algun sintoma del fluido despues de lavarse. Such devices are also sold separately as options. If one of these drives is installed, it is certified in the U.S. to conform to the requirements of the Department of Health and Human Services 21 Code of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products. Elsewhere, the drive is certified to conform to the requirements of the International Electrotechnical Commission (IEC) 825 and CENELEC EN 60 825 for Class 1 laser products. There are no serviceable parts inside those drives. Do not open. Note the following: Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam. Nao olhe fixo no feixe de luz, nao olhe diretamente por meio de instrumentos oticos e evite exposicao direta com o feixe de luz. Evitez de fixer le faisceau, de le regarder directement avec des instruments optiques, ou de vous exposer au rayon. Nicht direkt oder uber optische Instrumente in den Laserstrahl sehen und den Strahlungsbereich meiden. Ne nezzen bele se szabad szemmel, se optikai eszkozokkel. Kerulje a sugarnyalabbal valo erintkezest !. Non fissare il fascio, non guardarlo direttamente con strumenti ottici e evitare l’esposizione diretta al fascio. No mire fijamente ni examine con instrumental optico el haz de luz. Evite la exposicion directa al haz. The BIOS and device drivers are posted on the customer support site If you are instructed to replace either the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms. Running Automatic Configuration may alter the settings. Note the current configuration settings (using the View Configuration option); then, when service has been completed, verify that those settings remain in effect. This will cause all customer data on the hard disk to be lost. Be sure that the customer has a current backup of the data before doing this task. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten. Improper handling of a system board can cause damage to those components, and may cause a system malfunction. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code may also cause false error codes. If no error code is displayed, see whether the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing. A unique 4-digit MT and 3-digit model is provided to the customer to place orders (Example: 1829-W15). A CMV is a special bid offering. Therefore, it is NOT generally announced. The PRODUCT ID portion of the machine label is the 4-digit MT and 3-digit CMV model (Example: 1829-W15). Again, CMVs are custom models and are not found in the HMM. GAVs are announced and offered to all customers. Also, PEW, eSupport, and the HMM will list these products under the same fixed model number. These sources are PEW, eSupport, and the HMM. An example of key commodities are hard disk drives, system boards, microprocessors, Liquid Crystal Displays (LCDs), and memory. Input the MT and the Serial number and the list of key commodities will be returned in the PEW record under COMPONENT INFORMATION. Business Partners will enter Loc ID, MT and Serial, and the key commodities will be returned in the Eclaim record under SYSTEM DETAILS. Type in the model type and serial number. The key commodities will be returned in the eSupport record under PARTS SHIPPED WITH YOUR SYSTEM. Under “View by Document Type” select PARTS INFORMATION. Under “Filter by Category” select SERVICE PARTS. Under “Parts Information by Date” select SYSTEM SERVICE PARTS. The list of service parts by description, with applicable machine type model and FRU will be displayed. RoHS requirements must be implemented on Lenovo products placed on the market after June 2006. Products on the market before June 2006 are not required to have RoHS compliant parts. If the original FRU parts are non compliant, replacement parts can also be non compliant. In all cases if the original FRU parts are RoHS compliant, the replacement part must also be RoHS compliant. Products sold in 2005 and 2006, will contain some RoHS compliant FRUs. The following statement pertains to these products and any product Lenovo produces containing RoHS compliant FRUs. Before or after the RoHS implementation date, failed RoHS compliant parts must always be replaced using RoHS compliant FRUs, so only the FRUs identified as compliant in the system HMM or direct substitutions for those FRUs may be used. 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. When you replace a FRU, make sure that the model of the machine and the FRU part number are correct by referring to the FRU parts list. 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. The use of non-ThinkPad products, prototype cards, or modified options can lead to false indications of errors and invalid system responses. This section is an overview of the procedure. For details that depend on model-unique functions, refer to “ThinkPad T61 and T61p (15.4-inch widescreen)” on page 47. To avoid this problem, you need to initialize the computer setup by use of the BIOS Setup Utility before you run PC-Doctor. You can start the utility by pressing Enter instead of entering the supervisor password; however, you cannot change the parameters that are protected by the supervisor password. If you test one of these devices, you will need to enable it by using Configuration utility for DOS. The utility is available on the following Web site: To test a USB device, connect it to the USB connector of the computer. Instead of pressing Enter, click the left button. Follow the instructions on the screen. Some unsupported device names may appear in the PC-Doctor menu. All Rights Reserved. Press ENTER to select. If you have an external monitor attached to your computer, detach it before running PC-Doctor for DOS. If there is a problem, PC-Doctor shows messages describing it. To cancel the test, press Esc. Select one of the categories listed below to display symptoms and solutions: See the following figure: If the battery status indicator or icon does not turn on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon still does not turn on, replace the battery pack. Then reinstall the battery pack. If it is still not charged, go to the next section. This protects the battery pack from being overcharged or from having a shortened life. To get detailed information about the battery, double-click the Power Meter icon. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it. If the resistance is correct, replace the system board. See the following figure. In this case, you must use the recovery discs for the computer.