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IBM Thinkpad X20 X21 X22 X23 X24 Manual

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    							Safety Notice 4The lithium battery can cause a fire, explosion, or
    severe burn. Do not recharge it, remove its
    polarized connector, disassemble it, heat it above
    100°C (212°F), incinerate it, or expose its cell
    contents to water. 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.
    La pile de sauvegarde contient du lithium. Elle
    présente des risques d’incendie, d’explosion ou de
    brûlures graves. Ne la rechargez pas, ne retirez pas
    son connecteur polariséet ne la démontez pas. Ne
    l’exposez pasàune temperature supérieureà
    100°C, ne la faites pas brûleretn’en exposez pas
    le contenuàl’eau. Mettez la pile au rebut
    conformémentàla réglementation en vigueur. Une
    pile inappropriée risque de prendre feu ou
    d’exploser.
    Die Systembatterie ist eine Lithiumbatterie. Sie kann
    sich entzünden, explodieren oder schwere
    Verbrennungen hervorrufen. Batterien dieses Typs
    dürfen nicht aufgeladen, zerlegt,über 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. Bei der Entsorgung dieörtlichen
    Bestimmungen für Sondermüll beachten. Beim
    Ersetzen der Batterie nur Batterien des Typs
    verwenden, der in der Ersatzteilliste aufgeführt ist.
    Der Einsatz falscher Batterien kann zu Entzündung
    oder Explosion führen.
    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 100 gradi centigradi,
    incendiarla o gettarla in acqua. Smaltirla secondo la
    normativa in vigore (DPR 915/82, successive
    disposizioni e disposizioni locali). L’impiego di una
    batteria non adatta potrebbe determinare l’incendio
    ol’esplosione della batteria stessa.
    Chapter 1. Introduction7 
    						
    							Safety Notice 4La bateria de repuesto es una bateria de litio y
    puede provocar incendios, explosiones o
    quemaduras graves. No la recargue, ni quite el
    conector polarizado, ni la desmonte, ni caliente por
    encima de los 100°C (212°F), ni la incinere ni
    exponga el contenido de sus celdas al agua.
    Deséchela tal como dispone la normativa local.
    8ThinkPad X20, X21, X22, X23, X24 
    						
    							Safety Notice 5If 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.
    Si le panneau d’affichageàcristaux liquides se
    brise et que vous recevez dans les yeux ou sur les
    mains une partie du fluide, rincez-les abondamment
    pendant au moins quinze minutes. Consultez un
    médecin si des symptômes persistent aprèsle
    lavage.
    Die Leuchtstoffröhre im LCD-Bildschirm enthält
    Quecksilber. Bei der Entsorgung dieörtlichen
    Bestimmungen für Sondermüll beachten. Der
    LCD-Bildschirm besteht aus Glas und kann
    zerbrechen, wenn er unsachgemäβbehandelt wird
    oder der Computer auf den Boden fällt. Wenn der
    Bildschirm beschädigt ist und die darin befindliche
    Flüssigkeit in Kontakt mit Haut und Augen gerät,
    sollten die betroffenen Stellen mindestens 15
    Minuten mit Wasser abgespült und bei
    Beschwerden anschlieβend ein Arzt aufgesucht
    werden.
    Nel caso che caso l’LCD si dovesse rompere ed il
    liquido in esso contenuto entrasse in contatto con gli
    occhi o le mani, lavare immediatamente le parti
    interessate con acqua corrente per almeno 15
    minuti; poi consultare un medico se i sintomi
    dovessero permanere.
    Si la LCD se rompe y el fluido de su interior entra
    en contacto con sus ojos o sus manos, lave
    inmediatamente lasáreas afectadas con agua
    durante 15 minutos como mínimo. Obtenga atención
    medica si se presenta algúnsíntoma del fluido
    despues de lavarse.
    Chapter 1. Introduction9 
    						
    							Safety Notice 6To avoid shock, do not remove the plastic cover that
    surrounds the lower portion of the inverter card.
    Afin d’éviter tout risque de chocélectrique, ne
    retirez pas le cache en plastique protégeant la
    partie inférieure de la carte d’alimentation.
    Aus Sicherheitsgründen die Kunststoffabdeckung,
    die den unteren Teil der Spannungswandlerplatine
    umgibt, nicht entfernen.
    Per evitare scosse elettriche, non rimuovere la
    copertura in plastica che avvolge la parte inferiore
    della scheda invertitore.
    Para evitar descargas, no quite la cubierta de
    plástico que rodea la parte baja de la tarjeta
    invertida.
    Safety Notice 7Though main batteries have low voltage, a shorted
    or grounded battery can produce enough current to
    burn combustible materials or personnel.
    Bien que le voltage des batteries principales soit
    peuélevé, le court-circuit ou la miseàla masse
    d’une batterie peut produire suffisamment de
    courant pour brûler des matériaux combustibles ou
    causer des brûlures corporelles graves.
    Obwohl Hauptbatterien eine niedrige Spannung
    haben, können sie doch bei Kurzschluβoder Erdung
    genug Strom abgeben, um brennbare Materialien zu
    entzünden oder Verletzungen bei Personen
    hervorzurufen.
    Sebbene le batterie di alimentazione siano a basso
    voltaggio, una batteria in corto circuito o a massa
    puòfornire corrente sufficiente da bruciare materiali
    combustibili o provocare ustioni ai tecnici di
    manutenzione.
    Aunque las baterías principales tienen un voltaje
    bajo, una batería cortocircuitada o con contacto a
    tierra puede producir la corriente suficiente como
    para quemar material combustible o provocar
    quemaduras en el personal.
    10ThinkPad X20, X21, X22, X23, X24 
    						
    							Safety Notice 8Before removing any FRU, power-off the computer,
    unplug all power cords from electrical outlets,
    remove the battery pack, then disconnect any
    interconnecting cables.
    Avant de retirer une unitéremplaçable en clientèle,
    mettez le système hors tension, débranchez tous
    les cordons d’alimentation des socles de prise de
    courant, retirez la batterie et déconnectez tous les
    cordons d’interface.
    Die Stromzufuhr muβabgeschaltet, alle Stromkabel
    aus der Steckdose gezogen, der Akku entfernt und
    alle Verbindungskabel abgenommen sein, bevor
    eine FRU entfernt wird.
    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.
    Antes de quitar una FRU, apague el sistema,
    desenchufe todos los cables de las tomas de
    corriente eléctrica, quite la batería y, a continuación,
    desconecte cualquier cable de conexión entre
    dispositivos.
    Chapter 1. Introduction11 
    						
    							Safety information
    The following section contains the safety information that
    you need to be familiar with before servicing an IBM
    mobile computer.
    General safety
    Follow these rules to ensure general safety:
    vObserve good housekeeping in the area of the
    machines during and after maintenance.
    vWhen lifting any heavy object:
    1. Ensure you can stand safely without slipping.
    2. Distribute the weight of the object equally between
    your feet.
    3. Use a slow lifting force. Never move suddenly or
    twist when you attempt to lift.
    4. 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
    objects that weigh more than 16 kg (35 lb) or objects
    that you think are too heavy for you.
    vDo not perform any action that causes hazards, or that
    makes the equipment unsafe.
    vBefore you start the machine, ensure that other service
    representatives and the customer’s personnel are not in
    a hazardous position.
    vPlace removed covers and other parts in a safe place,
    away from all personnel, while you are servicing the
    machine.
    vKeep your toolcase away from walk areas so that other
    people will not trip over it.
    vDo not wear loose clothing that can be trapped in the
    moving parts of a machine. Ensure that your sleeves
    are fastened or rolled up above your elbows. If your hair
    is long, fasten it.
    vInsert the ends of your necktie or scarf inside clothing or
    fasten it with a non-conductive clip, approximately 8
    centimeters (3 inches) from the end.
    vDo not wear jewelry, chains, metal-frame eyeglasses, or
    metal fasteners for your clothing.
    Attention:Metal objects are good electrical
    conductors.
    vWear safety glasses when you are hammering, drilling,
    soldering, cutting wire, attaching springs, using solvents,
    or working in any other conditions that might be
    hazardous to your eyes.
    12ThinkPad X20, X21, X22, X23, X24 
    						
    							vAfter service, reinstall all safety shields, guards, labels,
    and ground wires. Replace any safety device that is
    worn or defective.
    vReinstall all covers correctly before returning the
    machine to the customer.
    Electrical safety
    Observe the following rules when working on electrical
    equipment.
    ImportantUse 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.
    vFind the room emergency power-off (EPO) switch,
    disconnecting switch, or electrical outlet. If an electrical
    accident occurs, you can then operate the switch or
    unplug the power cord quickly.
    vDo not work alone under hazardous conditions or near
    equipment that has hazardous voltages.
    vDisconnect all power before:
    –Performing a mechanical inspection
    –Working near power supplies
    –Removing or installing main units
    vBefore you start to work on the machine, unplug the
    power cord. 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.
    vIf you need to work on a machine that hasexposed
    electrical circuits, observe the following precautions:
    –Ensure that another person, familiar with the
    power-off controls, is near you.
    Attention:Another person must be there to switch
    off the power, if necessary.
    –Use only one hand when working with powered-on
    electrical equipment; keep the other hand in your
    pocket or behind your back.
    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.
    Chapter 1. Introduction
    13 
    						
    							–When using testers, set the controls correctly and
    use the approved probe leads and accessories for
    that tester.
    –Stand on suitable rubber mats (obtained locally, if
    necessary) to insulate you from grounds such as
    metal floor strips and machine frames.
    Observe the special safety precautions when you work
    with very high voltages; these instructions are in the
    safety sections of maintenance information. Use
    extreme care when measuring high voltages.
    vRegularly inspect and maintain your electrical hand tools
    for safe operational condition.
    vDo not use worn or broken tools and testers.
    vNever assume that power has been disconnected from
    a circuit. First, check that it has been powered off.
    vAlways look carefully for possible hazards in your work
    area. Examples of these hazards are moist floors,
    non-grounded power extension cables, power surges,
    and missing safety grounds.
    vDo not touch live electrical circuits with the reflective
    surface of a plastic dental mirror. The surface is
    conductive; such touching can cause personal injury and
    machine damage.
    vDo not service the following parts with the power on
    when they are removed from their normal operating
    places in a machine:
    –Power supply units
    –Pumps
    –Blowers and fans
    –Motor generators
    and similar units. (This practice ensures correct
    grounding of the units.)
    vIf an electrical accident occurs:
    –Use caution; do not become a victim yourself.
    –Switch off power.
    –Send another person to get medical aid.
    Safety inspection guide
    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.
    14ThinkPad X20, X21, X22, X23, X24 
    						
    							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.
    Consider these conditions and the safety hazards they
    present:
    vElectrical hazards, especially primary power (primary
    voltage on the frame can cause serious or fatal
    electrical shock)
    vExplosive hazards, such as a damaged CRT face or a
    bulging capacitor
    vMechanical hazards, such as loose or missing hardware
    The guide consists of a series of steps presented in a
    checklist. Begin the checks with the power off, and the
    power cord disconnected.
    Checklist:
    1. Check exterior covers for damage (loose, broken, or
    sharp edges).
    2. Power-off the computer. Disconnect the power cord.
    3. Check the power cord for:
    a. A third-wire ground connector in good condition.
    Use a meter to measure third-wire ground
    continuity for 0.1 ohm or less between the external
    ground pin and frame ground.
    b. The power cord should be the type specified in the
    parts list.
    c. Insulation must not be frayed or worn.
    4. Remove the cover.
    5. Check for any obvious non-IBM alterations. Use good
    judgment as to the safety of any non-IBM alterations.
    6. 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.
    7. Check for worn, frayed, or pinched cables.
    8. Check that the power-supply cover fasteners (screws
    or rivets) have not been removed or tampered with.
    Handling electrostatic
    discharge-sensitive devices
    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.
    Chapter 1. Introduction
    15 
    						
    							notes
    1. Use product-specific ESD procedures when they
    exceed the requirements noted here.
    2. Make sure that the ESD protective devices you
    use have been certified (ISO 9000) as fully
    effective.
    When handling ESD-sensitive parts:
    vKeep the parts in protective packages until they are
    inserted into the product. Avoid contact with other
    people.
    vWear a grounded wrist strap against your skin to
    eliminate static on your body.
    vPrevent the part from touching your clothing. Most
    clothing is insulative and retains a charge even when
    you are wearing a wrist strap.
    vUse the black side of a grounded work mat to provide a
    static-free work surface. The mat is especially useful
    when handling ESD-sensitive devices.
    vSelect a grounding system, such as those listed below,
    to provide protection that meets the specific service
    requirement.
    noteThe use of a grounding system is desirable but
    not required to protect against ESD damage.
    –Attach the ESD ground clip to any frame ground,
    ground braid, or green-wire ground.
    –Use an ESD common ground or reference point
    when working on a double-insulated or
    battery-operated system. You can use coax or
    connector-outside shells on these systems.
    –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. Proper
    grounding of the electrical outlet can be verified by a
    certified electrician.
    16ThinkPad X20, X21, X22, X23, X24 
    						
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