Service manual thinkpad

By posting, you are declaring that you understand this policy:. These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:. Lenovo ThinkPad T42 Notebook. Computer equipment. Service Manual. Use this manual along with the advanced diagnostic tests to troubleshoot problems. The manual is divided into sections as follows: v The common sections provide general information, guidelines, and safety information required in servicing computers.

Important This manual is intended for trained service personnel who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

Contents About this manual After it cools down, reinstall and recharge it. Note: Recharging will take at least 3 hours, even if the indicator does not turn on.

The resistance must be 4 to 30 K. If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board. Turn off the computer, and unplug the ac adapter from it. Turn the computer upside down. Measure the voltage of the backup battery. See the following figure.

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Important This manual is intended for trained service personnel who are familiar with ThinkPad products. Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs: v If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue.

Important service information Strategy for replacing a hard disk drive Always try to run a low-level format before replacing a hard disk drive. How to use error messages Use the error codes displayed on the screen to diagnose failures. Diskette compatibility matrix The compatibility of each of the drives with the diskettes for it is as follows: Diskette Diskette Compatibility drive capacity 3. Safety notices Safety notice 1 Before the computer is powered on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer.

Safety notices continuation of safety notice 4 La batteria di supporto e una batteria al litio e puo incendiarsi, esplodere o procurare gravi ustioni. Safety notices Safety notice 5 If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water for at least 15 minutes.

Safety notices Safety notice 7 DANGER Though the main batteries have low voltage, a shorted or grounded battery can produce enough current to burn personnel or combustible materials. Safety notices Safety notice 8 DANGER Before removing any FRU, power off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables. Safety information Safety information The following section presents safety information with which you need to be familiar before you service an IBM mobile computer.

General safety Follow these rules to ensure general safety: v Observe good housekeeping in the area of the machines during and after maintenance. Safety information v After service, reinstall all safety shields, guards, labels, and ground wires. WARNING Handling the cord on this product or cords associated with accessories sold with this product will expose you to lead, a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm.

Electrical safety Observe the following rules when working on electrical equipment. Important Use only approved tools and test equipment. Safety information — Ensure that another person, familiar with the power-off controls, is near you. This practice ensures correct grounding of the units.

Safety information Safety inspection guide The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions.

Consider these conditions and the safety hazards they present: v Electrical hazards, especially primary power primary voltage on the frame can cause serious or fatal electrical shock v Explosive hazards, such as a damaged CRT face or a bulging capacitor v Mechanical hazards, such as loose or missing hardware To determine whether there are any potentially unsafe conditions, use the following checklist at the beginning of every service task.

Checklist: 1. Check the power cord for: a. Remove the cover. Safety information 8. 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. Notes 1. When handling ESD-sensitive parts: v Keep the parts in protective packages until they are inserted into the product. Note The use of a grounding system to guard against ESD damage is desirable but not necessary.

Safety information — Use the round ground prong of the ac plug on ac-operated computers. Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function.

Read this first Before you go to the checkout guide, be sure to read this section. Important notes v Only certified trained personnel should service the computer. Name and phone number of servicer. Reinstall the Product Recovery program? Related service information 5. Power-on password: A power-on password POP protects the system from being powered on by an unauthorized person.

Turn off the computer. Remove the battery pack. Remove the backup battery. Related service information message is displayed at the lower-left of the screen, press the Access IBM button. How 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 to the servicer, IBM does not provide any services to reset the user HDPs or to recover data from the hard disk drive.

Related service information 4. Press F Related service information Power management To reduce power consumption, the computer has three power management modes: screen blank, standby, and hibernation. Screen blank mode Screen blank mode has three variants, as follows: 1.

To end screen blank mode and resume normal operation, press any key. Standby mode When the computer enters standby mode, the following events occur in addition to what occurs in screen blank mode: v The LCD is powered off.

To cause the computer to return from standby mode and resume operation, do one of the following: v Press the Fn key. Related service information v Open the LCD cover. Also, in either of the following events, the computer automatically returns from standby mode and resumes operation: v The ring indicator RI is signaled by a serial device or a PC Card device.

Checkout guide Checkout guide Use the following procedures as a guide in identifying and correcting problems with the ThinkPad computer. Checkout guide 4. To run the test, do as follows: Note: In the following procedure, you can select an item not only with the arrow keys, but also with the TrackPoint pointer. A pull-down menu appears. Its exact form depends on the model. All Rights Reserved. Use the cursor keys and ESC to move in menus. Connect the ac adapter. To check the battery pack, do the following: 1.

Checking the backup battery Do the following: 1. Front view. You can only view or download manuals with. Sign Up and get 5 for free. Upload your files to the site. You get 1 for each file you add. Get 1 for every time someone downloads your manual.

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Service and repair manuals for computers and technology from IBM. Media Type Media Type. Year Year. Collection Collection. It also comes with a firewall, so you can stay safe from attempts to compromise your information. This model brings a new line of dedicated and integrated graphics cards, the Intel Core-series processor line.

Wd datasheet, cross reference, circuit and application notes in pdf format. If you are satisfied with your free trial, please sign-up ptions without a plan would soon be removed. I enjoy astronomy and Im looking to get into photography. Most notebook form such as compaq Evo Series and Lenovo Thinkpad T42 have this type of graphic card which Compaq Evo nV Get your laptop service manual, you will need to read the part removal and replacement. Despite the low-ish specs, there's no getting around the Surface Go's disappointing battery life.

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