Manual ibm t42p

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. In this manual, safety notices appear in English with a page number reference to the appropriate multilingual, translated safety notice found in this section.

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. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts. Some standby batteries contain a small amount of nickel and cadmium.

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. Use of an incorrect battery can result in ignition or explosion of the battery. Certaines batteries de secours contiennent du nickel et du cadmium. Ne les mettez pas en court-circuit. Die Bereitschaftsbatterie, die sich unter dem Diskettenlaufwerk befindet, kann geringe Mengen Nickel und Cadmium enthalten.

Sie darf nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. The battery pack contains small amounts of nickel. 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. La batterie contient du nickel. Ne la mettez pas en court-circuit. Akkus enthalten geringe Mengen von Nickel. The lithium battery can cause a fire, an explosion, or a severe burn. La pile de sauvegarde contient du lithium.

Die Systembatterie ist eine Lithiumbatterie. Auch darf ihr Inhalt nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung angebrachte Verbindungsstecker entfernt werden.

La batteria di supporto e una batteria al litio e puo incendiarsi, esplodere o procurare gravi ustioni. Evitare di ricaricarla, smontarne il connettore polarizzato, smontarla, riscaldarla ad una temperatura superiore ai gradi centigradi, incendiarla o gettarla in acqua. 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.

Seek medical care if any symptoms from the fluid are present after washing. To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card.

Per evitare scosse elettriche, non rimuovere la copertura in plastica che avvolge la parte inferiore della scheda invertitore. Though the main batteries have low voltage, a shorted or grounded battery can produce enough current to burn personnel or combustible materials. 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.

Prima di rimuovere qualsiasi FRU, spegnere il sistema, scollegare dalle prese elettriche tutti i cavi di alimentazione, rimuovere la batteria e poi scollegare i cavi di interconnessione. The following section presents safety information with which you need to be familiar before you service an IBM mobile computer.

Make sure that you can stand safely without slipping. Distribute the weight of the object equally between your feet. Use a slow lifting force. Never move suddenly or twist when you attempt to lift. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back.

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. Attention: Metal objects are good electrical conductors. Replace any safety device that is worn or defective. Do not obstruct fan louvers or cover them with labels or stickers. 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.

Wash hands after handling. Use only approved tools and test equipment. 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. 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.

Attention: Another person must be there to switch off the power, if necessary. Attention: An electrical shock can occur only when there is a complete circuit. By observing the above rule, you may prevent a current from passing through your body. Observe the special safety precautions when you work with very high voltages; Instructions for these precautions are in the safety sections of maintenance information.

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. The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions. 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-IBM features or options not covered by this inspection guide. If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.

To determine whether there are any potentially unsafe conditions, use the following checklist at the beginning of every service task. Begin the checks with the power off, and the power cord disconnected. Check exterior covers for damage loose, broken, or sharp edges.

Power off the computer. Disconnect the power cord. A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0. The power cord should be the type specified in the parts list. Insulation must not be frayed or worn. Check for any obvious non-IBM alterations. Use good judgment as to the safety of any non-IBM alterations. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

Check for worn, frayed, or pinched cables. Check that the power-supply cover fasteners screws or rivets have not been removed or tampered with.

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.

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. Verify UltraBay Slim Device connector is clean, not damaged and connected properly. See pg 74, or as noted in the PDF reader as pg 80, of the "thinkpad t40 t40p t41 t41p t42 t42p Maintenance Manual" for more details if needed.

Insert and reconnect the UltraBay Slim Device making sure the connection is properly seated. Remove the memory module to inspect and assure the memory module connections are clean and not damaged.

Insert and reconnect the memory module making sure the connection is even and properly seated. Very the Keyboard connectors are clean and no pins are damaged before verifying connected properly. Remove the Keyboard to inspect and assure the Keyboard connectors are clean and not damaged. Proceed to the next steps to inspect, clean and reconnect the memory module under the keyboard, palm rest, antenna, fan, LCD screen and CMOS connections before reconnecting the keyboard, otherwise reconnect the keyboard connection and install the keyboard.

Verify Optional Memory Module Connectors are clean, not damaged and connected properly. Remove the Optional Memory Module connector to inspect and assure the Memory Module connectors are clean and not damaged. See pg 83, or as noted in the PDF reader as pg 89, of the "thinkpad t40 t40p t41 t41p t42 t42p Maintenance Manual" for more details if needed. Insert and reconnect the Optional Memory Module making sure the connection is properly seated.

Remove the Palm Rest connector to inspect and assure the Palm Rest connectors are clean and not damaged. See pg , or as noted in the PDF reader as pg , of the "thinkpad t40 t40p t41 t41p t42 t42p Maintenance Manual" for more details if needed.

Insert and reconnect the Palm Rest connector making sure the connection is properly seated. Remove the WiFi Antenna connectors to inspect and assure the WiFi antenna connectors are clean and not damaged. Reconnect the WiFi Antenna module making sure the connections are properly seated.

Verify the Fan Assembly Connectors are clean, not damaged and connected properly. Ask a question. Related product manuals. What does the download speed on the internet depend on? The download speed on the internet depends on the type of connection you have. What screen dimensions does my Laptop have? The size of your Laptop is usually expressed in inches, 1 inch is 2. The size is the diagonal size of your Laptop, so you measure the screen from bottom left to top right.

What is HDMI? An HDMI cable is used to transport audio and video signals between devices. How can I best clean my Laptop?