IBM ThinkPad 240X Service Manual

IBM Mobile Systems

ThinkPad 240X (2609)

Hardware Maintenance Manual

May 2000

S19K-5649-00 Before using this information and the product it supports, be sure to read the general information under “Read This First” on page 19.

Fourth Edition (May 2000)

The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law:

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ernment Users — Documentation related to restricted rights — Use, duplication, or disclosure is subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp.

About This Manual

This manual contains service and reference information for IBM ThinkPad 570Z (2644) and ThinkPad Ultrabase products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

The manual is divided into sections as follows:

 The Introduction section provides general information,

guidelines, and safety information required to service computers.

 The product-specific section includes service, refer-

ence, and product-specific parts information.

Important

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

Before servicing an IBM ThinkPad product, be sure to review the safety information under “Safety Notices (Multi-lingual Translations)” on page 4 and “Safety Information” on page 11.

iii

iv ThinkPad 240X

Introduction . . . . . . . . . . . . . . . . . . . 1

Important Service Information ........... 1

How to Use Error Messages .......... 2

How to Read POST Error Messages ...... 2

Drive and Diskette Compatibility Matrix ....... 3

Safety Notices (Multi-lingual Translations) ..... 4

Safety Information . . . . . . . . . . . . . . . . 11

General Safety . . . . . . . . . . . . . . . . 11

Electrical Safety . . . . . . . . . . . . . . . . 12

Safety Inspection Guide ............ 13

Handling Electrostatic Discharge-Sensitive Devices 15

Grounding Requirements . . . . . . . . . . . . 15

Laser compliance statement ............ 16

General Description . . . . . . . . . . . . . . . 19

Read This First .................. 19

What to Do First ................ 20

How to Disable the Password ......... 21

Product Overview . . . . . . . . . . . . . . . . . 22

Fn Key Combinations ............. 22

Status Indicators . . . . . . . . . . . . . . . . 23

Checkout Guide . . . . . . . . . . . . . . . . . 25

Audio Checkout . . . . . . . . . . . . . . . . 25

Fan ASM Checkout .............. 26

Keyboard and Auxiliary Input Device Checkout . 26

Memory Checkout . . . . . . . . . . . . . . . 26

Modem Board Checkout ............ 27

Power System Checkout ............ 27

TrackPoint Checkout . . . . . . . . . . . . . . 29

I/O Ports Checkout .............. 30

Power Management Features ......... 30

Symptom-to-FRU Index . . . . . . . . . . . . . . 33

Numeric Error Codes .............. 33

Error Messages . . . . . . . . . . . . . . . . 35

No Beep Symptoms .............. 35

LCD-Related Symptoms . . . . . . . . . . . . 36

Keyboard-Related Symptoms . . . . . . . . . . 36

Indicator-Related Symptoms . . . . . . . . . . 36

Power-Related Symptoms . . . . . . . . . . . 37

PC Card (PCMCIA)-Related Symptoms ..... 37

Speaker-Related Symptoms . . . . . . . . . . 37

Power Management-Related Symptoms ..... 37

Peripheral-Device-Related Symptom . . . . . . 38

Intermittent Problems . . . . . . . . . . . . . 38

Undetermined Problems . . . . . . . . . . . . 39

CE Utility Program Diskette ............ 40

Writing the VPD Data ............. 40

Flash UUID . . . . . . . . . . . . . . . . . . 40

Running the Diagnostics .............. 40

FRU Removals and Replacements ......... 41

Contents v

FRU Service Procedures ............ 41

1010 Battery ASM ............... 43

1020 Hard Disk Drive ............. 44

1030 Keyboard . . . . . . . . . . . . . . . . 45

1040 Modem Card ............... 46

1050 DIMM Card ............... 47

1060 LCD Unit ASM .............. 48

1070 Upper Cover ASM ............ 49

1080 Speaker ASM .............. 51

1085 Select Button ASM ............ 52

1090 Cable ASM and Cable ASM LED-R .... 53

1100 Fan ASM ................ 54

1110 Modem Cable ASM ............ 56

1120 Water Channel ASM ........... 57

1130 System Board .............. 58

1135 Rear Bracket ............... 60

1140 PCMCIA Slots .............. 61

1150 LCD Bezel ASM ............. 62

1160 LCD Inverter ASM ............ 63

1170 LCD Panel ASM (LCD Type A and B) . . . 64

1180 LCD FPC ASM (LCD Type A) ....... 66

1185 LCD FPC ASM (LCD Type B) ....... 67

1190 Hinge ASM ............... 68

Computer Parts Listing .............. 69

LCD Unit Parts Listing (LCD Type A) ........ 74

LCD Unit Parts Listing (LCD Type B) ........ 75

Service Tools . . . . . . . . . . . . . . . . . . . 75

Notices . . . . . . . . . . . . . . . . . . . . . . 77

Trademarks . . . . . . . . . . . . . . . . . . . 77

vi ThinkPad 240X

Introduction

Important Service Information

Important

Diskette fixes are customer installable. The diskette fixes are posted on the IBM Support site

http://www.pc.ibm.com/support

Advise customers to contact the PC Company HelpCenter at 800-772-2227 if they need assistance in obtaining or installing any diskette fixes.

FRU Replacement Strategy

Before Replacing Parts

Ensure that all diskette fixes are installed prior to replacing any FRUs listed in this manual.

Use the following strategy to prevent unnecessary FRU replacement and service expense:

 If you are instructed to replace a FRU and that

does not correct the problem, reinstall the original FRU before you continue.

 Some computers have both a processor board and a

system board. If you are instructed to replace either the processor board or the system board, and the first board that you replaced does not correct the problem, reinstall the original board, then replace the other (processor or system) board.

 If an adapter or device consists of more than one

FRU, an error code may be caused by any of the FRUs. 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.

Attention

A customized setup configuration (other than default settings) may exist on the computer you are servicing. Running Automatic Configuration may alter those settings. Note the current configuration settings (using the View Configuration option) and verify that the settings are in place when service is complete.

Hard Disk Drive Replacement Strategy:

Always try to run a low-level format before replacing a hard disk drive.

Introduction

Attention

The drive startup sequence in the computer you are servicing might have been changed. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be overwritten if you select an incorrect drive.

How to Use Error Messages

Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. The cause of the first error code can result in false error codes being displayed. If no error code is displayed, see if the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing.

How to Read POST Error Messages

POST error messages are displayed on the screen as three, four, five, or eight digits. The error messages that can be displayed as shorter POST messages are highlighted in this index. Some digits will represent different information for SCSI errors versus non-SCSI errors.

The following example shows which digits display the shorter POST error messages and also defines the SCSI information in an eight-digit error message.

Shorter POST Messages

┌────┬────┬────┬────┐

│ │ │ │ │ ┌────┬────┬────┬────┬────┬────┬────┬────┐ │ ð│ ð│ ð│ ð│ ð│ ð│ ð│ ð│ └────┴────┴────┴────┴────┴────┴────┴────┘

│ │ │ │ │ │ │ │

Reserved ││││││Size (SCSI)

└────┴────┘ │ │ Slot Number (SCSI)

ID (SCSI)

All SCSI devices are set to a different SCSI ID. Duplicate SCSI ID settings can generate a false error message. Use the SCSI ID to determine whether the error message is coming from an internal or an external device.

Device Code │ Logical Unit Number (SCSI)

2 ThinkPad 240X

Drive and Diskette Compatibility Matrix

The following table provides identification information for

3.5-inch drives.

Diskette Drive

3.5-Inch - 1.44MB 1.44 on the eject button

3.5-Inch - 2.88MB 2.88 on the eject button

Identifying Mark

The following table provides compatibility information for

3.5-inch diskettes and 3.5-inch diskette drives.

Diskette Capacity

1.0MB Read/Write Read/Write

2.0MB Read/Write Read/Write

4.0MB Not Compatible Read/Write

1.44MB Drive

2.88MB Drive

The following table provides identification information for

5.25-inch diskette drives.

Diskette Drive

5.25-Inch - 360KB (External) Asterisk on bezel

5.25-Inch - 1.2MB (Internal) 1.2 on the eject button

Identifying Mark

The following table provides compatibility information for

5.25-inch diskettes and 5.25-inch diskette drives.

Diskette Capacity

360KB Read/Write Read/Write

1.2MB Not Compatible Read/Write

360KB Drive

1.2MB Drive

Note: A 360KB diskette written to or formatted on a

1.2MB drive can be read reliably only on a 1.2MB drive.

Introduction 3

Safety Notices (Multi-lingual Translations)

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

The following safety notices are provided in English, French, German, Italian, and Spanish languages.

Safety Notice 1

Before the computer is powered-on after FRU replacement, make sure all screws, springs, or 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.

Avant de remettre l'ordinateur sous tension après remplacement d'une unité en clientèle, vérifiez que tous les ressorts, vis et autres pièces sont bien en place et bien fixées. Pour ce faire, secouez l'unité et assurez-vous qu'aucun bruit suspect ne se produit. Des pièces métalliques ou des copeaux de métal pourraient causer un court-circuit.

Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird, muß sichergestellt werden, daß keine Schrauben, Federn oder andere Kleinteile fehlen oder im Gehäuse vergessen wurden. Der Computer muß geschüttelt und auf Klappergeräusche geprüft werden. Metallteile oder

-splitter können Kurzschlüsse erzeugen. Prima di accendere l'elaboratore dopo che é stata

effettuata la sostituzione di una FRU, accertarsi che tutte le viti, le molle e tutte le altri parti di piccole dimensioni siano nella corretta posizione e non siano sparse all'interno dell'elaboratore. Verificare ciò scuotendo l'elaboratore e prestando attenzione ad eventuali rumori; eventuali parti o pezzetti metallici possono provocare cortocircuiti pericolosi.

Antes de encender el sistema despues de sustituir una FRU, compruebe que todos los tornillos, muelles y demás piezas pequeñas se encuentran en su sitio y no se encuentran sueltas dentro del sistema. Compruébelo agitando el sistema y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden causar cortocircuitos eléctricos.

4 ThinkPad 240X

Safety Notice 2

Some standby batteries contain a small amount of nickel and cadmium. Do not disassemble it, 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 démontez pas, ne les rechargez pas, ne les exposez ni au feu ni à l'eau. Ne les mettez pas en court-circuit. Pour les mettre au rebut, conformez-vous à la réglementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle de l'horloge temps réel, veillez à n'utiliser que les modèles cités dans la liste de pièces détachées adéquate. Une batterie ou une pile inappropriée risque de prendre feu ou d'exploser.

Die Bereitschaftsbatterie, die sich unter dem Diskettenlaufwerk befindet, kann geringe Mengen Nickel und Cadmium enthalten. 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 Verätzungen verursachen. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Bereitschafts- oder Systembatterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen.

Alcune batterie di riserva contengono una piccola quantità di nichel e cadmio. Non smontarle, ricaricarle, gettarle nel fuoco o nell'acqua né cortocircuitarle. Smaltirle secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni locali). 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.

Algunas baterías de reserva contienen una pequeña cantidad de níquel y cadmio. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Deséchelas tal como dispone la normativa local. Utilice sólo baterías que se encuentren en la lista de piezas. La utilización de una batería no apropiada puede provocar la ignición o explosión de la misma.

Introduction 5

Safety Notice 3

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. Use of an incorrect battery can result in ignition or explosion of the battery.

La batterie contient du nickel. Ne la démontez pas, ne l'exposez ni au feu ni à l'eau. Ne la mettez pas en court-circuit. Pour la mettre au rebut, conformez-vous à la réglementation en vigueur. Lorsque vous remplacez la batterie, veillez à n'utiliser que les modèles cités dans la liste de pièces détachées adéquate. En effet, une batterie inappropriée risque de prendre feu ou d'exploser.

Akkus enthalten geringe Mengen von Nickel. Sie dürfen nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Bei der Entsorgung die örtlichen 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 contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco o nell'acqua né cortocircuitarla. Smaltirla secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni locali). Quando si sostituisce la batteria, 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.

Las baterías contienen pequeñas cantidades de níquel. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Deséchelas tal como dispone la normativa local. Utilice sólo baterías que se encuentren en la lista de piezas al sustituir la batería. La utilización de una batería no apropiada puede provocar la ignición o explosión de la misma.

6 ThinkPad 240X

Safety Notice 4

The 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 polarisé et ne la démontez pas. Ne l'exposez pas à une temperature supérieure à 100°C, ne la faites pas brûler et n'en exposez pas le contenu à l'eau. Mettez la pile au rebut conformément à la 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 die örtlichen 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 o l'esplosione della batteria stessa.

La 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.

Introduction 7

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. Seek medical care if any symptoms from the fluid are present after washing.

Si le panneau d'affichage à cristaux 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 après le lavage.

Die Leuchtstoffröhre im LCD-Bildschirm enthält Quecksilber. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Der LCD-Bildschirm besteht aus Glas und kann zerbrechen, wenn er unsachgemäß behandelt 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 anschließend 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 las áreas afectadas con agua durante 15 minutos como mínimo. Obtenga atención medica si se presenta algún síntoma del fluido despues de lavarse.

8 ThinkPad 240X

Safety Notice 6

To avoid shock, do not remove the plastic cover that surrounds the lower portion of the inverter card.

Afin d'éviter tout risque de choc électrique, 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 7

Though 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 peu élevé, le court-circuit ou la mise à la 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 Kurzschluß oder 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 può fornire 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.

Introduction 9

Safety Notice 8

Before 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 unité remplaçable 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 muß abgeschaltet, 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.

10 ThinkPad 240X

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:

 Observe good housekeeping in the area of the

machines during and after maintenance.

 When 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.

objects that weigh more than 16 kg (35 lb) or objects that you think are too heavy for you.

 Do not perform any action that causes hazards to the

customer, or that makes the equipment unsafe.

 Before you start the machine, ensure that other

service representatives and the customer's personnel are not in a hazardous position.

 Place removed covers and other parts in a safe

place, away from all personnel, while you are servicing the machine.

 Keep your tool case away from walk areas so that

other people will not trip over it.

 Do 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.

 Insert the ends of your necktie or scarf inside clothing

or fasten it with a nonconductive clip, approximately 8 centimeters (3 inches) from the end.

 Do not wear jewelry, chains, metal-frame eyeglasses,

or metal fasteners for your clothing. Attention: Metal objects are good electrical conduc-

tors.

 Wear 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.

 After service, reinstall all safety shields, guards,

labels, and ground wires. Replace any safety device that is worn or defective.

 Reinstall all covers correctly before returning the

machine to the customer.

Do not attempt to lift any

Introduction

Electrical Safety

Observe the following rules when working on electrical equipment.

Important

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.

 Find 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.

 Do not work alone under hazardous conditions or

near equipment that has hazardous voltages.

 Disconnect all power before:

– Performing a mechanical inspection – Working near power supplies – Removing or installing main units

 Before 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.

 If you need to work on a machine that has

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: There must be a complete circuit to cause electrical shock. By observing the above rule, you may prevent a current from passing through your body.

– 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.

exposed

12 ThinkPad 240X

 Regularly inspect and maintain your electrical hand

tools for safe operational condition.

 Do not use worn or broken tools and testers. 

Never assume

from a circuit. First, powered-off.

 Always look carefully for possible hazards in your

work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds.

 Do 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.

 Do not service the following parts

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.)

 If an electrical accident occurs:

– Use caution; do not become a victim your-

self.

– Switch off power. – Send another person to get medical aid.

that power has been disconnected

check

that it has been

with the power on

Safety Inspection Guide

The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service personnel from injury. This guide addresses only those items. However, good judgment should be used 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.

Consider these conditions and the safety hazards they present:

 Electrical hazards, especially primary power (primary

voltage on the frame can cause serious or fatal electrical shock).

 Explosive hazards, such as a damaged CRT face or

bulging capacitor

 Mechanical hazards, such as loose or missing hard-

ware

Introduction

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 appropriate type

as specified in the parts listings.

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.

14 ThinkPad 240X

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.

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:

 Keep the parts in protective packages until they are

inserted into the product.

 Avoid contact with other people.  Wear a grounded wrist strap against your skin to

eliminate static on your body.

 Prevent the part from touching your clothing. Most

clothing is insulative and retains a charge even when you are wearing a wrist strap.

 Use 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.

 Select a grounding system, such as those listed

below, to provide protection that meets the specific service requirement.

Note

The 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 batteryoperated 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.

Introduction 15

Laser compliance statement

Some IBM Personal Computer models are equipped from the factory with a CD-ROM drive. CD-ROM drives are also sold separately as options. The CD-ROM drive is a laser product. The CD-ROM drive 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.

When a CD-ROM drive is installed, note the following.

CAUTION: Use of controls or adjustments or performance of pro-

cedures other than those specified herein might result in hazardous radiation exposure.

O uso de controles, ajustes ou desempenho de procedimentos diferentes daqueles aqui especificados pode resultar em perigosa exposição à radiação.

Pour éviter tout risque d'exposition au rayon laser, respectez les consignes de réglage et d'utilisation des commandes, ainsi que les procédures décrites.

Werden Steuer- und Einstellelemente anders als hier festgesetzt verwendet, kann gefährliche Laserstrahlung auftreten.

L'utilizzo di controlli, regolazioni o l'esecuzione di procedure diverse da quelle specificate possono provocare l'esposizione a

16 ThinkPad 240X

El uso de controles o ajustes o la ejecución de procedimientos distintos de los aquí especificados puede provocar la exposición a radiaciones peligrosas.

Opening the CD-ROM drive could result in exposure to hazardous laser radiation. There are no serviceable parts inside the CD-ROM drive. Do not open.

Some CD-ROM drives contain an embedded Class 3A or Class 3B laser diode. Note the following.

DANGER: Laser radiation when open. Do not stare into the

beam, do not view directly with optical instruments, and avoid direct exposure to the beam.

Radiação por raio laser ao abrir. Não olhe fixo no feixe de luz, não olhe diretamente por meio de instrumentos óticos e evite exposição direta com o feixe de luz.

Rayonnement laser si carter ouvert. Évitez de fixer le faisceau, de le regarder directement avec des instruments optiques, ou de vous exposer au rayon.

Laserstrahlung bei geöffnetem Gerät. Nicht direkt oder über optische Instrumente in den Laserstrahl sehen und den Strahlungsbereich meiden.

Kinyitáskor lézersugár ! Ne nézzen bele se szabad szemmel, se optikai eszközökkel. Kerülje a sugárnyalábbal való érintkezést !

Aprendo l'unità vengono emesse radiazioni laser. Non fissare il fascio, non guardarlo direttamente con strumenti ottici e evitare l'esposizione diretta al fascio.

Radiación láser al abrir. No mire fijamente ni examine con instrumental óptico el haz de luz. Evite la exposición directa al haz.

Introduction

18 ThinkPad 240X

General Description

There are two models of LCD panel used with the ThinkPad 240X: LCD Type A and LCD Type B. Check the last five letters of the unit's serial number you are servicing to determine the model.

LCD Type A:

All ThinkPad 240X computers that have serial numbers whose last five "YZZZZ" are fitted with Type A panels.

LCD Type B:

All ThinkPad 240X computers that have serial numbers whose last five with Type B panels.

The servicer need only check the fifth letter from the end. If the fifth letter from the end is "B — Y" (inclusive), then the LCD panel is Type A. If the fifth letter from the end is "Z", then the LCD panel is Type B.

alphanumeric characters

letters

are "ZAAAA" to "ZZZZZ" are fitted

are "B0586" to

Read This First

Before you go to the checkout guide, be sure to read this section.

Important Notes

 Only certified trained personnel should service

the computer.

 Read the entire FRU service procedures before

replacing any FRUs.

 Use new nylon-coated screws when you replace

FRUs.

 Be extremely careful during write operations such

as copying, saving, or formatting. Drives in the

computer that you are servicing might have been rearranged or the drive startup sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten.

 Replace FRUs only for the correct model. When

you replace a FRU, make sure the model of the computer and FRU part number are correct by referring to the FRU parts list.

 A FRU should not be replaced because of a

single, unreproducible failure. 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. FRU replacement should be considered only when a recurring problem exists. If this is suspected, clear the

General Description 19

error log and run the test again. Do not replace any FRUs if log errors do not reappear.

Be careful not to replace a non-defective FRU.

What to Do First

The servicer must include the following in the parts exchange form or parts return form that is attached to the returned FRU:

1. Name and phone number of servicer

2. Date of service

3. Date when part failed

4. Date of purchase

5. Failure symptoms, error codes appearing on the display, and beep symptoms

6. Procedure index and page number in which the failing FRU was detected

7. Failing FRU name and part number

8. Computer type, model number and serial number

9. Customer's name and address

Before checking problems with the computer, determine whether or not the damage applies to the warranty by referring to the following:

Note for Warranty: 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. The following list provides some common items that are not covered under warranty and some symptoms that may indicate that the system was subjected to stresses beyond normal use:

The following is not covered under warranty:

 LCD panel cracked by applying excessive force or

from being dropped

 Scratched (cosmetic) parts  Cracked or broken plastic parts, broken latches,

broken pins, or broken connectors caused by excessive force

 Damage caused by liquid spilled into the system  Damage caused by the improper insertion of a PC

Card or the installation of an incompatible card

 Damaged or bent PC Card eject button  Fuses blown by attachment of a non-supported

device

 Forgotten computer password (making the computer

unusable)

 Sticky keys caused by spilling liquid onto the key-

board

20 ThinkPad 240X

The following symptoms might indicate damage caused by non-warranted activities:

 Missing parts might be a symptom of unauthorized

service or modification.

 Hard disk drive spindles can become noisy from

being subjected to excessive force or from being dropped.

How to Disable the Password

There are three passwords used at a typical customer site: the Supervisor Password, the hard disk drive password, and the Power On password.

 Power On password:

1. Power off the computer.

2. Remove the battery pack and AC Adapter.

3. Open the keyboard and disconnect the keyboard connector from the system board, see “1030 Keyboard” on page 45.

4. Short the jumper JP1. See the following figure:

5. Close the keyboard.

6. Power on the computer and wait until POST ends.

7. Verify that the password prompt does not appear.

 Supervisor and hard disk drive passwords:

The Supervisor Password and hard disk drive password are security features that are used to protect the system and the hard disk drive data from unauthorized access. No overriding capability is provided, so it cannot be replaced if they are forgotten. If the customer forgets the Supervisor Password, the system board must be replaced. If the customer forgets the hard disk drive password, the hard disk drive must be replaced.

General Description 21

Product Overview

The following shows an overview of the system features of the ThinkPad 240X computer.

Feature Description

Processor Intel Mobile Pentium III 500 MHz

Bus architecture PCI Bus Memory 64 MB SDRAM onboard

BIOS ROM up to 512 Kbytes Video  10.4–inch, 16M colors,

Audio  20–bit stereo D/A and 18–bit

Hard disk drive  6/12 GB, 2.5–inch, IDE inter-

I/O ports  External monitor

Infrared transfer IrDA 1.1 Internal modem 56Kbps (depends on the model) PC Card (PCMCIA) One Type II

AC Adapter 72–Watt type

or Celeron 450 MHz, 128 KB L2 cache

32 MB, 64 MB or 128 MB DIMM card (max. 192 MB)

800x600 pixel TFT color LCD

stereo A/D audio  Internal speaker  Internal microphone

face

 Headphone/line-out  Line-in  Microphone-in  Mouse/keyboard  Parallel  Serial  USB  RJ-11

 External diskette drive

CardBus support

Fn Key Combinations

The following table shows the Fn key and function key combinations and their corresponding functions.

The Fn key works independently of the operating system. The operating system obtains the status through the system management interface to control the system.

Fn + Result

F3 Standby mode F4 Suspend mode

22 ThinkPad 240X

Fn + Result

F5 Decrease brightness F6 Increase brightness F7 Switch between the LCD, the external monitor,

F8 Switch power mode F9 Hibernation mode F10 Print screen F11 Scroll lock F12 Pause 0 (zero) Activates the system request function

(minus)

= Signals a break Up

arrow Down

arrow Left

arrow Right

arrow Insert Decreases the internal speaker volume Delete Increases the internal speaker volume Back-

space

and both the LCD and external monitor.

Enables the numeric keypad

Page up

Page down

Home

End

Mutes the internal speaker

Status Indicators

The system status LED indicators show the current computer status. The following shows the location of each indicator symbol and the meaning of each indicator.

ThinkPad

General Description 23

Symbol Color Meaning

(1) Battery status Green Enough battery power

Blinking orange

Orange The battery pack is being

(2) Suspend mode

(3) Drive in use Orange Data is being read from

(4) Numeric lock Green The numeric keypad on

(5) Caps lock Green Caps Lock mode is

(6) Scroll lock Green Scroll Lock mode is

Green The computer is in

Blinking green

remains for operation. The battery pack needs

to be charged.

charged.

suspend mode. The computer is entering

suspend mode.

or written to the hard disk drive. Do not enter hibernation mode or power off the computer when this indicator is on.

the keyboard is enabled. You enable or disable the keypad by pressing and holding the Fn key, and pressing the NumLk key. For details, see the User's Reference.

enabled. All alphabetic characters entered in capital letters without the Shift key being pressed. You enable or disable the Caps Lock mode by pressing and holding the

Fn key, and pressing the Caps Lock key.

enabled. The Arrow keys can be used as screen-scroll function keys. The cursor cannot be moved with the Arrow keys.

(A-Z)

Not all

are

application programs support this function.

You enable or disable Scroll Lock mode by pressing and holding the

Fn key, and pressing the ScrLk key.

(7) Power on Green The computer is opera-

tional. This indicator is always on when the computer is on and not in suspend mode.

24 ThinkPad 240X

Checkout Guide

Use the following procedure as a guide for computer problems.

Note: The diagnostic tests are intended to test only IBM

products. Non-IBM products, prototype cards, or modified options can give false errors and invalid system responses.

1. Obtain the failing symptoms in as much detail as possible.

2. Verify the symptoms by attempting to recreate the failure by running the diagnostic test or by repeating the same operation.

Note: To run the diagnostics, refer to “Running the

Diagnostics” on page 40

3. Use the following table with the verified symptom to determine which page to go to. Search the symptoms column and find the description that best matches your symptom; then go to the page shown in the "Go to" column.

Symptoms (Verified) Go to

Power failure. (The power-on indicator does not go on or stay on.)

POST does not complete. No beeps or error codes/messages are indicated.

POST beeps, but no error codes are displayed.

POST detected an error and displayed numeric error codes.

The diagnostic test detected an error and displayed a FRU code.

Other symptoms (such as LCD display problems).

Symptoms cannot be recreated (intermittent problems).

“Power System Checkout” on page 27, then use table in “Power-Related Symptoms” on page 37.

“Symptom-to-FRU Index” on page 33, then use table in “No Beep Symptoms” on page 35.

“Symptom-to-FRU Index” on page 33.

“Symptom-to-FRU Index” on page 33, then use table in “Numeric Error Codes” on page 33.

“Running the Diagnostics” on page 40.

“Symptom-to-FRU Index” on page 33.

Use the customer-reported symptoms, and go to “Symptom-to-FRU Index” on page 33.

Audio Checkout

Do as follows:

1. Boot from the diagnostics diskette and start the program.

2. Go to Interactive Tests on the main menu and select the Internal Speaker test.

General Description

3. If no sound is heard, replace the speaker.

Fan ASM Checkout

To check the fan ASM, do the following:

1. Boot from the diagnostics diskette and start the program.

2. Go to Diagnostics on the main menu and select Other Devices.

3. Follow the description in the window. If the test detects a fan ASM problem, replace the fan.

Keyboard and Auxiliary Input Device Checkout

Note: Remove the external keyboard if the internal key-

board is to be tested.

If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable extending from the keyboard is correctly seated on the connector.

If the keyboard cable connection is correct, run the Keyboard Test. See “Running the Diagnostics” on page 40 for details.

If the test detects a keyboard problem, do the following one at a time to correct the problem. Do not replace a nondefective FRU.

1. Replace the keyboard.

2. Replace the system board.

The following auxiliary input devices are supported for this computer:

 Numeric keypad

 Mouse (PS/2 compatible)  External keyboard (with keyboard/mouse cable)

If any of these devices do not work, reseat the cable connector and repeat the failing operation.

If the problem does not reoccur, replace the device and then the system board.

Memory Checkout

DIMM are available for increasing memory capacity.

Onboard (MB) Slot (MB) Total Memory

64 0 64 64 32 96 64 64 128 64 128 192

26 ThinkPad 240X

(MB)

Memory errors might stop system operation, show error messages on the screen, or hang the system.

Use the following procedure to isolate memory problems:

1. Turn off the computer and remove any installed DIMM from its slot.

2. Boot from the diagnostics diskette and start the program.

3. Go to Diagnostics on the main menu and select Memory Test. If an error appears, replace the system board.

4. Turn off the computer and reinstall the DIMM; then turn on the computer. Verify the memory size; then test the memory. If an error appears, replace the DIMM.

Note: Make sure that the DIMM is properly installed into

the connector. A loose connection can cause an error.

Modem Board Checkout

Do the following to isolate the problem to the system internal modem:

1. Boot from the diagnostics diskette and start the program.

2. Go to Diagnostics on the main menu and select Other Devices.

3. Follow the description in the window.

4. If the test detects a modem problem, replace the modem card.

Power System Checkout

To verify the symptom of the problem power on the computer using each of the following power sources:

1. Remove the battery ASM.

2. Connect the AC Adapter and check that power is supplied.

3. Disconnect the AC Adapter and install the charged battery ASM; then check that power is supplied by the battery ASM.

If you suspect a power problem, refer to the appropriate power supply check listed below:

 “Checking the AC Adapter” on page 28  “Checking the Operational Charging” on page 28  “Checking the Battery ASM” on page 28

General Description

Checking the AC Adapter: You are here

because the computer fails only when the AC Adapter is used:

 If the power-on indicator does not turn on, check the

power cord of the AC Adapter for correct continuity and installation.

 If the operational charge does not work, go to

“Checking the Operational Charging.”

Unplug the AC Adapter cable from the computer and measure the output voltage at the plug of the AC Adapter cable. See the following figure.

Pin Voltage (V dc)

1 +15.5 to +17.0 2 Ground

If the voltage is not correct, replace the AC Adapter. If the voltage is within the range, do the following:

 Replace the system board.  If the problem is not corrected, go to “Undetermined

Problems” on page 39

Note: An audible noise from the AC Adapter does not

always indicate a defective adapter.

Checking the Operational Charging: To

check operational charging, use a discharged battery pack (battery ASM) or a battery ASM that has less than 50% of the total power remaining when installed in the computer.

Perform operational charging. If the battery status indicator does not turn on, remove the battery ASM and let it return to room temperature. Reinstall the battery ASM.

If the charge indicator still does not turn on, replace the battery ASM. If the charge indicator still does not turn on, replace the system board. Then reinstall the battery ASM. If the reinstalled battery ASM is not charged, go to the next section.

Checking the Battery ASM: Do the following:

1. Power off the computer.

2. Remove the battery ASM and measure the voltage between battery terminals 1 (+) and 5 (-). See the following figure:

28 ThinkPad 240X

Note: Signal lines, not used in these steps, are used

for communications between the system and the battery.

3. If the voltage is less than 10.6V, the battery ASM has been discharged, recharge the battery ASM. If the voltage is still less than 10.6V, replace the battery.

TrackPoint Checkout

If the external mouse is connected, the TrackPoint does not work. In this case, please detach the external mouse to check the TrackPoint.

If this does not correct the TrackPoint problem, continue with the following:

After you use the TrackPoint, the pointer drifts on the screen for a short time. This self-acting pointer movement can occur when a slight, steady pressure is applied to the TrackPoint pointer. This symptom is not a hardware problem. No service actions are necessary if the pointer movement stops in a short period of time.

If a click button problem or pointing stick problem occurs, do the following:

1. Boot from the diagnostics diskette and start the program.

2. Go to Interactive Tests on the main menu and select Mouse.

3. Follow the instructions in the message window.

If either the pointing stick or the click button does not work, do the following actions one at a time to correct the problem. Do not replace a non-defective FRU.

1. Reseat the keyboard Touchbutton cables.

2. Replace the keyboard.

3. Replace the system board.

General Description

I/O Ports Checkout

Note: Be sure to enable the serial and parallel ports in

the BIOS setup utility before performing diagnostics tests on the I/O ports.

Also, be sure to write down the I/O address for the serial port to identify the port in the diagnostic test.

Do perform a diagnostics checkout on the I/O ports:

1. Boot from the diagnostics diskette and start the program.

2. Go to Diagnostics on the main menu and select

Serial Ports or Parallel Ports. Note: If you want to do a check on the infrared port,

select Serial Ports.

3. In the Serial Port Test Category, you can check four items:

 Registers and Interrupts  Internal Loopback  External Loopback

 FIFO Buffers (16550A) Move the cursor to the item you want to check, and

press Enter. Then follow the instructions on the screen.

Note: To do an External Loopback test, you must

have a Loopback plug.

4. In the Parallel Port Test Category, you can check two items:

 Command And Data Port  External Loopback And IRQ

Move the cursor to the item you want to check, and press Enter. Then follow the instructions on the screen.

Note: To do an External Loopback And IRQ test,

you must have a Loopback plug.

Power Management Features

Three power management modes are available in the computer system to reduce power consumption and to prolong battery life.

Standby Mode: In standby mode, the following

occurs:

 The LCD backlight turns off.  The hard disk drive motor stops.

Events that cause the computer to enter standby mode:

 Standby mode requested by the Fn key (Fn+F3).

The computer exits standby and resumes operation when any key is pressed.

30 ThinkPad 240X

Suspend Mode: In suspend mode, the following

occurs:

 The LCD is powered off.  The hard disk drive is powered off.  The CPU stops.

Events that cause the computer to enter suspend mode:

 Suspend mode requested by the Fn key (Fn+F4).  The Lid is closed.  The specified time has elapsed.  Battery low occurs and hibernation conditions are

insufficient. Note: When battery is low, the battery status indi-

cator blinks orange.

Note: In the IBM BIOS Setup Utility, the computer can be

set to suspend when the lid is closed.

The following events cause the computer to resume operation from suspend mode:

 The Lid is opened.  The real time clock alarm is signaled.  The ring indicator (RI) is signaled by a PC Card

device or the internal modem.

 The Fn key is pressed.  Power switch is pressed.

The computer also exits suspend mode when the battery is critically low or timer conditions are satisfied for entering hibernation mode.

Hibernation Mode: For Windows NT user:

A Windows NT user cannot create a hibernation file in a Windows NT system that uses the NTFS format system. If you want to use hibernation mode, you should reinstall Windows NT with a FAT format system. Also, if boot manager is installed, the computer cannot enter hibernation mode.

Note: Before using hibernation mode, you need a

hibernation file.

In hibernation mode, the following occurs:

 The system status, RAM, VRAM, and setup data are

stored on the hard disk.

 The system is powered off.

Events that cause the computer to enter hibernation mode:

 Hibernation mode requested by function key (Fn+F9).  Timer conditions are satisfied in suspend mode when

hibernate by timer is enabled.

 A critically low battery condition occurs.

General Description

 The power switch is pressed. (BIOS Setup)

The computer exits hibernation mode and resumes operation when the power-on switch is pressed. When power is turned on, the hibernation file in the boot record on the hard disk drive is read and the system status is restored from the hard disk drive.

The power switch must be pressed to cause the computer to resume operation from hibernation mode.

How to Create the Hibernation Function:

follows:

 Turn off the computer.  Insert the hibernation utility diskette into the diskette

drive (you can create the diskette using the Diskette Factory).

 Turn on the computer.  Follow the instructions on the screen.

Note: If you change the memory size, you need to

recreate the hibernation file or partition. For partition-based hibernation, use the hibernation utility to delete the partition first before creating a new one.

Do as

32 ThinkPad 240X

Symptom-to-FRU Index

The Symptom-to-FRU Index lists the symptoms and errors and the possible causes. The most likely cause is listed first.

Note: Perform the FRU replacement or actions in the

sequence shown in the FRU/Action columns. If a FRU replacement does not solve the problem, put the original part back in the computer. Do not replace a non-defective FRU.

This index can also be used to help you decide the next possible FRUs to be replaced when servicing a computer.

Numeric error codes show the errors detected in POST or system operation (runtime). In the following error codes, X can be any number. If no codes are available, use narrative symptoms.

If the symptom is not listed, go to “Undetermined Problems” on page 39.

Note: For IBM devices not supported by diagnostic codes

in this ThinkPad computer, see the manual for that device.

Numeric Error Codes

The following is a list of the message that the BIOS can display. Most of them occur during POST. Some of them display information about a hardware device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the way it has been configured. Following the list are explanations of the messages and remedies for reported problems.

If the system fails after you make changes in the Setup menus, reset the computer, enter Setup and install Setup defaults or correct the error.

Symptom/Error FRU/Action in Sequence

0200 Failure Fixed

Disk

0211 Stuck Key

0210 Keyboard

error 0212

Keyboard Controller Failed

1. Reseat hard disk drive.

2. Load Setup Defaults in BIOS Setup Utility.

3. Hard disk drive

4. System board Go to “Keyboard and Auxiliary Input

Device Checkout” on page 26. Go to “Keyboard and Auxiliary Input

Device Checkout” on page 26.

Go to “Keyboard and Auxiliary Input Device Checkout” on page 26.

General Description 33

Symptom/Error FRU/Action in Sequence

0213 Keyboard

locked — Unlock key switch

0220 Monitor type

does not match CMOS — Run Setup

0230 Shadow RAM

Failed at offset:nnnn

0231 System RAM

Failed at offset:nnnn

0232 Extended

RAM Failed at offset:nnnn

0250 System

battery is dead

0251 System

CMOS checksum bad — Default configuration used

0260 System timer

error 0270

Real time clock error

0280 Previous boot

incomplete — Default configuration used

0281 Memory size

found by POST differed from CMOS

Unlock external keyboard.

Load Setup Defaults in BIOS Setup Utility.

System board

1. DIMM

2. System board

1. DIMM

2. System board

System board

1. Run BIOS Setup Utility to reconfigure the system, then reboot the system.

2. System board

1. Run BIOS Setup Utility to reconfigure the system, then reboot the system.

2. System board

1. Load Setup Defaults in the BIOS Setup Utility.

2. System board

1. Load Setup Defaults in the BIOS Setup Utility.

2. DIMM

3. System board

34 ThinkPad 240X

Symptom/Error FRU/Action in Sequence

02D0 System

cache error — Cache disabled

02F0 CPU ID:

02F5 DMA Test

Failed 02F6

Software NMI Failed

02F7 Fail-Safe

Timer NMI Failed

System board

1. DIMM

2. System board

1. DIMM

2. System board

1. DIMM

2. System board

Error Messages

Symptom/Error FRU/Action in Sequence

Device Address Conflict

Allocation Error for: device

Failing Bits: nnnn

Invalid System Configuration Data

I/O device IRQ conflict

Operating system not found

1. Load Setup Defaults in BIOS Setup Utility.

2. System board

1. Load Setup Defaults in BIOS Setup Utility.

2. System board

1. DIMM

2. System board System board

1. Load Setup Defaults in BIOS Setup Utility.

2. System board

1. Check that the operating system has no failure and is installed correctly.

2. Enter IBM BIOS Setup Utility and see whether the hard disk drive and the diskette drive are properly installed.

3. Diskette drive

4. Hard disk drive

5. System board

No Beep Symptoms

General Description 35

Symptom/Error FRU/Action in Sequence

No beep, power-on indicator on, LCD blank, no POST

No beep, power-on indicator off, LCD blank during POST

No beep, power-on indicator on, LCD blank during POST

No beep during POST but system runs correctly.

 Ensure every connector is

connected tightly and cor-

rectly.  DIMM  System board

 Battery ASM  AC Adapter  System board

 Reseat DIMM.  System board

Speaker

LCD-Related Symptoms

Symptom/Error FRU/Action in Sequence

LCD backlight not working

LCD too dark LCD brightness

cannot be adjusted

LCD screen unreadable

Character missing pels

Screen abnormal Wrong color dis-

played LCD has extra hori-

zontal or vertical lines displayed.

1. Reseat the LCD connector.

2. LCD FPC ASM

3. LCD inverter

4. LCD

5. System board

1. Reseat the LCD connector.

2. LCD FPC ASM

3. LCD inverter

4. LCD

5. System board

1. LCD FPC ASM

2. LCD inverter

3. LCD

4. System board

Keyboard-Related Symptoms

Symptom/Error FRU/Action in Sequence

Keyboard (one or more keys) doesn't work.

1. Reseat the keyboard cable.

2. Keyboard

3. System board

Indicator-Related Symptoms

Symptom/Error FRU/Action in Sequence

Indicator incorrectly remains off or on, but system runs correctly.

36 ThinkPad 240X

1. Reseat the LED cable.

2. LED cable

3. System board

Power-Related Symptoms

Symptom/Error FRU/Action in Sequence

Power shuts down during operation.

The system will not power on.

The system will not power off.

Battery can't be charged.

1. Battery

2. AC Adapter

3. System board

1. Battery ASM

2. AC Adapter

3. System board

1. System board

 Battery  System board

PC Card (PCMCIA)-Related Symptoms

Symptom/Error FRU/Action in Sequence

System cannot detect the PC Card (PCMCIA)

1. PC Card (PCMCIA) slots assembly

2. System board

Speaker-Related Symptoms

Symptom/Error FRU/Action in Sequence

Speakers make noise or no sound comes from system.

In DOS or Windows multimedia programs, no sound comes from the computer.

1. Speaker

2. System board

1. Speaker

2. System board

Power Management-Related Symptoms

Symptom/Error FRU/Action in Sequence

The system will not enter hibernation mode.

The system will not wake up from hibernation mode.

The system will not enter suspend mode after closing the LCD.

General Description 37

1. Keyboard (if control is from the keyboard)

2. Hard disk drive

3. System board

1. Keyboard (if control is from the keyboard)

2. Hard disk drive

3. System board

1. LED Card ASM (R)

2. System board

Symptom/Error FRU/Action in Sequence

Battery fuel-gauge does not go higher than 90%.

System configuration does not match the installed devices.

System hangs intermittently.

1. Remove battery ASM and let it cool for 2 hours.

2. Refresh battery (continue using battery in BIOS Setup mode until power off, then charge battery).

3. Battery

4. System board

1. Load Setup Defaults and reboot the system.

1. Fan ASM

2. System board

Peripheral-Device-Related Symptom

Symptom/Error FRU/Action in Sequence

External display does not work correctly.

USB does not work correctly.

Print problems  Run printer self-test.

Serial or parallel port device problems

System board

 Printer driver  Printer cable  System board

 Device driver  Device cable  Device  System board

Note: If you cannot find a symptom or an error in this list

and the problem remains, see “Undetermined Problems” on page 39.

Intermittent Problems

Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electronic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists.

When analyzing an intermittent problem, do the following:

1. Run the diagnostic test for the system board in loop mode at least 10 times.

2. If no error is detected, do not replace any FRUs.

3. If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist.

38 ThinkPad 240X

Undetermined Problems

You are here because the diagnostic tests did not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Follow these procedures to isolate the failing FRU (do not isolate non-defective FRUs).

Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System Checkout” on page 27.)

1. Power off the computer.

2. Visually check for damage. If any problems are found, replace the FRU.

3. Remove or disconnect all of the following devices: a. Non-IBM devices

b. Printer, mouse, and other external devices

c. Battery ASM

d. Hard disk drive

e. DIMM

f. PC Cards (PCMCIA)

4. Power on the computer.

5. Determine if the problem has changed.

6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7. If the problem remains, replace the following FRUs one at a time. Do not replace a non-defective FRU.

a. System board

b. LCD panel ASM

General Description

CE Utility Program Diskette Writing the VPD Data

The EEPROM on the system board contains the Vital Product Data (VPD) — that is, a computer serial number and a system board serial number. When you replace the system board, restore the computer serial number using the VPD Data Utility in the ThinkPad CE Utility Diskette. The serial number label is attached to the computer.

Flash UUID

The EEPROM on the system board contains the Universal Unique ID (UUID) — that is, for Microsoft or Internet use. When you replace the system board using the Flash UUID Utility in the ThinkPad CE Utility Diskette. The UUID utility will automatically assign the UUID via Windows.

Running the Diagnostics

Use either the TrackPoint or the cursor move keys to interact with the tests.

1. Connect the external floppy disk drive to the computer.

2. Insert the PC Doctor startup disk into the diskette drive.

3. Power-on the computer.

4. From the PC DOS 7.0 Startup Menu, select 1. ThinkPad 240X and press Enter.

The PC-Doctor diagnostic program will load.

5. At the main menu, select the test to run.

6. Press Enter to run the test selected.

7. After starting a test, do not press any key until prompted, then follow the instructions on the screen.

8. When the test is completed, press Esc to return to the main menu.

9. Select Quit/Exit Diags to exit the diagnostics utility.

40 ThinkPad 240X

FRU Removals and Replacements

This section contains information about removals and replacements.

 Do not damage any parts. Only certified and trained

personnel should service the computer.

 The arrows in this section show the direction of move-

ment to remove a FRU, or to turn a screw to release the FRU. The arrows are marked in numeric order, in square callouts, to show the correct sequence of removal.

 When other FRUs must be removed before the failing

FRU is removed, they are listed at the top of the page.

 To replace a FRU, reverse the removal procedure

and follow any notes that pertain to replacement.

 When replacing a FRU, use the correct screw size, as

shown in the procedures.

Safety Notice 1:

Before the computer is powered on after FRU replacement, make sure all screws, springs, or 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 an electrical short circuit.

Safety Notice 4:

The 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.

Safety Notice 8:

Before removing any FRU, power-off the computer, unplug all power cords from electrical outlets, remove the battery ASM, and then disconnect any interconnecting cables.

An electrostatic discharge (ESD) strap (P/N 6405959) must be used to establish personal grounding.

FRU Service Procedures

Review the following procedures before replacing any FRU.

LCD FRU Replacement Notice: The TFT LCD

(SVGA 10.4–inch) for the computer contains many thin-film transistors (TFTs). A small number of missing, discolored, or lighted dots (on all the time) is characteristic of TFT LCD technology, but excessive pixel problems can cause

General Description

viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is: 5 or more bright dots, 5 or more dark dots, or a total of 9 or more bright and dark dots.

Replacing the System Board: When you

replace the system board, restore the computer serial number using the VPD Data Utility and reassign the UUID using the Flash UUID Utility in the ThinkPad 240X ThinkPad Hardware Maintenance Diskette.

Note: Do not power off the computer while restoring the

VPD.

Important Notice

This computer uses special nylon-coated screws with the following characteristics:

 They maintain tight connections.  They do not easily come loose, even with shock

or vibration.

 They need additional force to tighten.  They should be used only once.

Do the following when you service this computer:

 Have a screw kit (10L1956) available.  Always use new screws if you are instructed.  Use a torque screwdriver (U.S. only) if you have

one.

42 ThinkPad 240X

1010 Battery ASM

To remove the battery ASM:

1. Slide the release lock as shown.

2. Slide the release latch as shown.

3. Remove the battery ASM.

Reverse the steps described above when installing a new battery pack.

General Description

1020 Hard Disk Drive

Warning

 Do not drop or apply any shock to the hard disk drive.

The hard disk drive is sensitive to physical shock. Incorrect handling can cause damage and permanent loss of data on the drive.

 Before removing the drive, have the user make a

backup copy of all the information on the drive if possible.

 Never remove the drive while the system is operating

or is in suspend mode.

To remove the hard disk drive:

1. Remove the two screws from the hard disk cover.

2. Slide the hard disk drive module as shown.

3. Lift as shown to remove the hard disk drive module.

Step

1 M2.5 x 7L (2) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.5 kgf-cm

black

44 ThinkPad 240X

1030 Keyboard

 1010 Battery ASM

To remove the keyboard:

1. Remove the three screws securing the keyboard.

2. Turn the notebook over; then lift the keyboard as shown.

ThinkPadThinkPad

3. Disconnect the keyboard connector from the system board. Remove the keyboard from the lower case.

ThinkPadThinkPad

Step

tity)

1 M2.0 x 9L (3) Flat head,

Size (Quan-

Head & Color Torque

2.5 kgf-cm

black

Note: Make sure you use the correct screw for replacement.

General Description 45

1040 Modem Card

 1010 Battery ASM

 1030 Keyboard To remove the modem card:

1. Carefully release the latches on both sides of the modem card.

ThinkPadThinkPad

2. Disconnect the modem cable from the connector.

3. Gently remove the modem card.

46 ThinkPad 240X

1050 DIMM Card

 1010 Battery ASM

 1030 Keyboard To remove the memory card:

1. Carefully release the latches on both sides of the memory card.

ThinkPadThinkPad

2. Gently remove the memory card.

General Description

1060 LCD Unit ASM

Note: Refer to “General Description” on page 19 for infor-

mation on LCD Type A and LCD Type B panel designations.

 1010 Battery ASM  1030 Keyboard Note: The Cu tape must be reseated firmly after the LCD

unit ASM is replaced .2/.

To remove the LCD unit ASM:

1. Remove the hinge covers.

2. Remove the Cu tape from the FPC cable.

3. Disconnect the LCD FPC cable from the system board.

4. Remove the LCD hinge screws.

5. Raise the upper cover enough to remove the FPC cable. Remove the LCD unit.

Step

4 M2.5 x 6 L

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

(4)

Head & Color Torque

Flat head, silver

3.5 kgf-cm

48 ThinkPad 240X

1070 Upper Cover ASM

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM

To remove the upper cover ASM:

1. Remove the screw cover.

2. Remove the screw.

3. Remove the other screw as shown.

4. Remove the two screws from the hard disk drive bay.

Step

2 M2.0 x 4L (1) Flat head,

3 M2.5 x 7L (1) Flat head,

4 M2.0 x 4L (2) Flat head,

5 M2.0 x 4L Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.5 kgf-cm

black

2.5 kgf-cm

black

2.5 kgf-cm

black

2.0 kgf-cm

black

5. Turn the notebook over; then remove the two screws.

General Description 49

6. Disconnect the Touchbutton cable from the system board.

7. Carefully lift the upper cover to expose the speaker connector as shown.

8. Disconnect the speaker cable from the main unit. Now you can remove the upper cover ASM from the base cover ASM.

50 ThinkPad 240X

1080 Speaker ASM

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM

To remove the speaker:

1. Remove the three screws securing the speaker.

2. Remove the Cu tape and the securing tape from the cable.

3. Gently lift the speaker away from the upper cover.

Step

1 M2.0 x 3L (3) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.5 kgf-cm

silver

General Description 51

1085 Select Button ASM

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM

To remove the select button ASM:

1. Remove the three screws as shown.

2. Remove the select button ASM from the top cover ASM.

Step

1 M2.5 x 2.5L

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

(3)

Head & Color Torque

Flat head, silver

2.0 kgf-cm

52 ThinkPad 240X

1090 Cable ASM and Cable ASM LED-R

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM

To remove the hinge LED cable:

1. Disconnect the LED cable, then lift it as shown. (The cable is fixed with double-sided tape.)

To remove the cable ASM LED-R:

1. Remove the screw.

2. Disconnect the LED board, then lift it as shown.

Step

1 M2.0 x 7L (1) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.0 kgf-cm

silver

General Description 53

1100 Fan ASM

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM  1090 Cable ASM and Cable ASM LED-R

Warning

Do not apply pressure on the fan blades or hub assembly; doing so can damage the fan bearings.

To remove the fan ASM:

1. Remove the two screws securing the fan ASM.

2. Carefully lift the fan ASM.

3. Disconnect the cable from the system board.

Warning

The fan ASM FRU includes a small pad of thermal rubber. The thermal rubber has adhesive and protective paper on both sides and must be fixed onto the fan ASM before reassembly.

To fix the thermal rubber on the fan ASM:

1. Remove the protective paper from one side of the thermal rubber.

2. Press the thermal rubber firmly in place on the fan ASM.

3. Remove the protective paper from the other side of the thermal rubber.

54 ThinkPad 240X

Thermal rubber

Protective paper

Warning

When reassembling the fan, ensure that you insert the screws in the order shown in the following illustration:

Step

1 M2.0 x 7L (2) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.0 kgf-cm

silver

General Description 55

1110 Modem Cable ASM

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM

To remove the modem cable ASM:

 Disconnect the modem cable from the system board.

Remove the cable as shown.

56 ThinkPad 240X

1120 Water Channel ASM

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM

To remove the water channel ASM:

 Remove the water channel ASM as shown.

General Description 57

1130 System Board

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM  1090 Cable ASM and Cable ASM LED-R  1100 Fan ASM  1120 Water Channel ASM

Note: See “Replacing the System Board” on page 42

before proceeding.

1. Remove the screws as shown.

2. Turn the notebook over; remove the two screws from the diskette drive connector.

3. Remove the screw from the PCMCIA slot.

4. Remove the battery terminal screw.

5. Gripping firmly as shown, separate the base cover around the sides from the system board.

58 ThinkPad 240X

6. Remove the system board from the base cover ASM.

Step

1 M2.0 x 4L (5) Flat head,

2 M2.0 x 6L (2) Flat head,

3 M2.0 x 4L (1) Flat head,

4 M2.0 x 8L (1) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.5 kgf-cm

black

2.0 kgf-cm

black

2.0 kgf-cm

black

2.0 kgf-cm

black

General Description 59

1135 Rear Bracket

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM  1090 Cable ASM and Cable ASM LED-R  1100 Fan ASM  1120 Water Channel ASM  1130 System Board

Note: See “Replacing the System Board” on page 42

before proceeding.

1. Remove the six hexagonal studs as shown.

2. Remove the microphone.

3. Remove the rear bracket.

Step

1 M2.5 x 4.5L

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

(6)

Head & Color Torque

Hex head, silver

4.0 kgf-cm

60 ThinkPad 240X

1140 PCMCIA Slots

 1010 Battery ASM  1020 Hard Disk Drive

 1030 Keyboard

 1060 LCD Unit ASM  1070 Upper Cover ASM  1090 Cable ASM and Cable ASM LED-R  1100 Fan ASM  1120 Water Channel ASM  1130 System Board

Warning

Special care must be taken when disconnecting the PCMCIA card not to cause a short or damage the connector.

To remove the PCMCIA slots:

1. Remove the screw securing the PCMCIA slot board.

2. Use a flat-bladed screwdriver to disconnect the PCMCIA card from the connector.

3. Carefully remove the PCMCIA card.

Step

1 M2.0 x 7L (1) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.0 kgf-cm

silver

General Description 61

1150 LCD Bezel ASM

 1010 Battery ASM

1. Remove the screw cap covers.

2. Remove the screws as shown.

ThinkPadThinkPad

3. Gripping as shown, remove the LCD bezel.

4. The LCD latches must be opened as shown to remove the bezel.

ThinkPadThinkPad

5. Remove the bezel from the LCD unit.

Step

2 M2.5 x 5L (2) Flat head,

2A M2.5 x 5L (2) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

2.5 kgf-cm

black

1.5 kgf-cm

black

62 ThinkPad 240X

1160 LCD Inverter ASM

 1010 Battery ASM  1150 LCD Bezel ASM

To remove the LCD inverter ASM:

1. Disconnect the flex cable from the inverter card.

2. Disconnect the FPC cable from the inverter card.

ThinkPad

3. Remove the inverter card. (The inverter card is fixed to the rear cover with double-sided tape.)

General Description

1170 LCD Panel ASM (LCD Type A and B)

Note: Refer to “General Description” on page 19 for infor-

mation on LCD Type A and LCD Type B panel designations.

 1010 Battery ASM

 1030 Keyboard

 1150 LCD Bezel ASM  1160 LCD Inverter ASM

To remove the LCD Panel:

1. Remove the Cu tape and disconnect the FPC cable.

2. Remove the four screws securing the LCD Panel.

3. Lift the top cover enough to pass the FPC connector through.

64 ThinkPad 240X

4. Remove the LCD panel.

Step

2 (LCD Type A)

2 (LCD Type B)

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

M2.5 x 4L (4) Flat head,

M2.0 x 4L (4) Flat head,

Head & Color Torque

3.0 kgf–cm

silver

3.0 kgf–cm

silver

General Description 65

1180 LCD FPC ASM (LCD Type A)

Note: Refer to “General Description” on page 19 for infor-

mation on LCD Type A and LCD Type B panel designations.

 1010 Battery ASM

 1030 Keyboard

 1150 LCD Bezel ASM  1160 LCD Inverter ASM  1170 LCD Panel ASM (LCD Type A and B)

Note: When replacing the flex cable in the following pro-

cedure, the labelled face of the cable must face away from the LCD panel.

1. Remove the tape from the FPC cable.

2. Disconnect the FPC connector from the LCD panel.

Bs1 FPC 1A P/N DEPC1222AA

Career B through

Bs1 FPC 1A P/N DEPC1222AA

3. Disconnect the flex cable from the LCD panel.

66 ThinkPad 240X

1185 LCD FPC ASM (LCD Type B)

Note: Refer to “General Description” on page 19 for infor-

mation on LCD Type A and LCD Type B panel designations.

 1010 Battery ASM

 1030 Keyboard

 1150 LCD Bezel ASM  1160 LCD Inverter ASM  1170 LCD Panel ASM (LCD Type A and B)

1. Remove the tape from the FPC cable.

2. Open the fasteners on the FPC cable holder.

3. Disconnect the FPC connector from the LCD panel.

General Description 67

1190 Hinge ASM

 1010 Battery ASM

 1030 Keyboard

 1060 LCD Unit ASM  1150 LCD Bezel ASM

1. Remove the screws as shown.

2. Remove the hinge ASM.

Step

1 M2.5 x 4L (2) Flat head,

Note: Make sure you use the correct screw for replacement.

Size (Quantity)

Head & Color Torque

3.5 kgf–cm

silver

68 ThinkPad 240X

Computer Parts Listing

Index Description FRU

a—d See MISC PARTS list 04P3067 1 HINGE CAP L/R 10L1954

HINGE CAP L/R (i-1124) 04P3066

2 UPPER COVER ASM 04P3059

UPPER COVER ASM (i-1124) 04P3060 3 REAR BRACKET 10L1952 4 LED CARD ASM (L) 10L1303 5 SERIAL/VGA CAP 10L1951 6 STANDARD BATTERY 02K6687 7 PCMCIA SLOT 04P3061 8 DISKETTE DRIVE CONNECTOR

LID 9 TRACKPOINT CAP 84G6536 10 See Keyboard list

General Description 69

Number

10L1953

Index Description FRU

11 SELECT BUTTON ASM 10L1958 12 FAN ASM 08K5926 13 SPEAKER ASM 02K6307 14 LED CARD ASM (R) 27L0579 15 SYSTEM BOARD ASM CELERON

450

SYSTEM BOARD ASM PIII 500 08K3208 16 MODEM CARD ASM 10L1305 17 BASE COVER ASM M/T 2609 04P3062

BASE COVER ASM M/T 2612 04P3077

BASE COVER ASM PRC M/T 2609 04P3063

BASE COVER ASM PRC M/T 2612 04P3078

BASE COVER ASM Korea M/T 2609 04P3064

BASE COVER ASM Korea M/T 2612 04P3079 18 HARD DISK DRIVE ASM 6 GB 27L3433

HARD DISK DRIVE ASM 12 GB 27L3434

HARD DISK DRIVE DOOR 04P3065

Number

08K3206

Description FRU

AC ADAPTER

AC Adapter 72W (2 PIN) 02K6669 AC Adapter 72W (2 PIN) 02K6673 AC Adapter 72W (3 PIN) 02K6666 AC Adapter 72W (3 PIN) 02K6670

KEYBOARD

KBD ASM US English 02K5330 KBD ASM Japanese 02K5331 KBD ASM Japanese i-Series 02K5332 KBD ASM Traditional Chinese 02K5333 KBD ASM Korean 02K5334 KBD ASM Canadian French 02K5335 KBD ASM UK English 02K5336 KBD ASM German 02K5337 KBD ASM French 02K5338 KBD LA Spanish 02K5339 KBD ASM Danish 02K5340 KBD ASM Dutch 02K5341 KBD ASM Swedish/Finnish 02K5342 KBD ASM Italian 02K5343 KBD ASM Norwegian 02K5344

Number

70 ThinkPad 240X

Description FRU

KBD ASM Portuguese 02K5345 KBD ASM Spanish 02K5346 KBD ASM Swiss 02K5347 KBD ASM Belgium 02K5348 KBD ASM Hebrew 02K5349 KBD ASM Arabic 02K5350 KBD ASM Turkish 02K5351 KBD ASM Hungarian 02K5352 KBD ASM Russian 02K5353 KBD ASM Greek 02K5354 KBD ASM Czech 02K5355 KBD ASM Slovenian 02K5356 KBD ASM Slovakian 02K5357

Miscellaneous

Screw Kit 10L1956 MODEM CABLE ASM INTERNAL 27L0580 TELEPHONE CABLE US 27L0478 TELEPHONE CABLE Australia 27L0533 TELEPHONE CABLE UK 27L0480 TELEPHONE CABLE Germany 27L0481 TELEPHONE CABLE France 27L0482 TELEPHONE CABLE Austria 27L0580 TELEPHONE CABLE Belgium 27L0512 TELEPHONE CABLE Denmark/Portugal 27L0513 TELEPHONE CABLE Netherlands 27L0514 TELEPHONE CABLE Norway/Finland 27L0515 TELEPHONE CABLE Italy 27L0516 TELEPHONE CABLE Sweden 27L0517 TELEPHONE CABLE Switzerland 27L0518 TELEPHONE CABLE Spanish/Irish 27L0545 32 MB DIMM 20L0263 64 MB DIMM 20L0264 128 MB DIMM 20L0265 EXTERNAL DISKETTE DRIVE CABLE 12J1711 EXTERNAL DISKETTE DRIVE ASM 05K8989

MICROPHONE HEADSET (i-1124) 02K4941 LARGE BATTERY 02K6690

Number

05K8990

General Description 71

Description FRU

MISC PARTS

(a) MODEM DOOR (b) SHUTTER (PCMCIA) (c) SPRING SHUTTER (d) WATER CHANNEL (e) FPC HOLDER (upper) FPC HOLDER (upper) i-Series (f) FPC HOLDER (lower) FPC HOLDER (lower) i-Series (g) HOOK KNOB - R HOOK KNOB - R i-Series (h) SPRING HOOK - R (i) HOOK KNOB - L HOOK KNOB - L i-Series (j) SPRING-HOOK - L

Others

Power cord (Japan 2 PIN) 13H5273 Power cord (Australia, Papua New Guinea,

New Zealand, Paraguay, Uruguay) Power cord (Bahamas, Barbados, Bermuda,

Bolivia, Cayman Islands, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Guyana, Haiti, Honduras, Jamaica, Korea (South), Mexico, Netherlands, Antilles, Nicaragua, Panama, Peru, Philippines, Saudi Arabia, Suriname, Taiwan, Trinidad (West Indies), Venezuela)

Power cord (Austria, Belgium, Bulgaria, Czech Republic, Egypt, Finland, France, Germany, Greece, Hungary, Iceland, Indonesia, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Spain, Sweden, Turkey, former Yugoslavia)

Power cord (Denmark) 76H3520 Power cord (Bangladesh, Pakistan, South

Africa, Sri Lanka) Power cord (Abu Dhabi, Albania, Antigua,

Bahrain, Brunei, Dubai, Fiji, Hong Kong, India, Ireland, Kenya, Kuwait, Macao, Malaysia, Nigeria, Oman, People's Republic of China, Qatar, Singapore, United Kingdom)

Power cord (Switzerland) 76H3528 Power cord (Israel) 76H3532 Power cord (Chile, Italy) 76H3530 Power cord (Korea) 76H3535 Power cord (PRC) 02K0539 Power cord (Canada, U.S.A. 2 PIN) 13H5264

Number

04P3067

76H3514

76H3516

76H3518

76H3522

76H3524

72 ThinkPad 240X

Description FRU

Power cord (Argentina 2 PIN) 36L8870

Number

General Description 73

LCD Unit Parts Listing (LCD Type A)

Note: Refer to “General Description” on page 19 for infor-

mation on LCD Type A and LCD Type B panel designations.

Index Computer FRU

e — j See MISC PARTS list 04P3067 1 LCD BEZEL ASM 04P3056

LCD BEZEL ASM (i-1124) 04P3057

LCD BEZEL ASM Korea 04P3058 2 LCD UNIT-TFT 10.4-inch 05K9653 3 LCD CABLE ASM 10L2164 4 HINGE ASM L/R 10L1943 5 LCD REAR COVER ASM 04P3052

LCD REAR COVER ASM (i-1124) 04P3053

LCD REAR COVER ASM Korea 04P3055 6 INVERTER CARD ASM 10L1530

SCREW CAP (i-1124) 04P3068

Number

74 ThinkPad 240X

LCD Unit Parts Listing (LCD Type B)

Note: Refer to “General Description” on page 19 for infor-

mation on LCD Type A and LCD Type B panel designations.

Index Computer FRU

e—j See MISC PARTS list 04P3067 1 LCD BEZEL ASM 04P3056

LCD BEZEL ASM (i-1124) 04P3057

LCD BEZEL ASM Korea 04P3058 2 LCD UNIT-TFT 10.4-inch 05K9651 3 LCD CABLE ASM 27L0489 4 HINGE ASM L/R 10L1943 5 LCD REAR COVER ASM 08K5820

LCD REAR COVER ASM (i-1124) 04P3054

LCD REAR COVER ASM Korea 08K5925 6 INVERTER CARD ASM 10L1431

Service Tools

Description FRU No.

Diagnostic Diskette N/A CE Utility Diskette N/A

Number

General Description 75

Description FRU No.

Tri-Connector Wrap Plug 72X8546 PC Test Card 35G4703 Audio Wrap Cable 66G5180 Screwdriver Kit 95F3598 USB Parallel Test Cable 05K2580 Torque Screwdriver (U.S. only) 05K4695 5 mm Socket Wrench 05K4694 Screwdriver 27L8126

76 ThinkPad 240X

Notices

References in this publication to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM product, program, or service is not intended to state or imply that only IBM product, program, or service may be used. Subject to IBM's valid intellectual property or other legally protectable rights, any functionally equivalent product program, or service may be used instead of the IBM product, program, or service. The evaluation and verification of operation in conjunction with other products, except those expressly designated by IBM, are the responsibility of the user.

IBM may have patents or pending patent applications covering subject matter in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to:

IBM Director of Licensing IBM Corporation 500 Columbus Avenue Thornwood, NY 10594 U.S.A.

Trademarks

The following terms are trademarks or service marks of IBM Corporation in the United States and other countries:

IBM PS/2 ThinkPad TrackPoint TrackPoint IV

The following terms are trademarks or service marks of other companies as follows:

Intel Intel Corporation Mylar E.I. Du Pont de Nemours and Company PCMCIA Personal Computer Memory Card Interface

Pentium Intel Corporation

Association

General Description 77

IBM

Part Number: 19K5649

Printed in U.S.A.

S19K-5649-ðð

IBM ThinkPad 240X Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Introduction

Read This First

What to Do First

How to Disable the Password

Product Overview

Fn Key Combinations

Status Indicators

Checkout Guide

Audio Checkout

Fan ASM Checkout

Keyboard and Auxiliary Input Device Checkout

Memory Checkout

Modem Board Checkout

Power System Checkout

TrackPoint Checkout

I/O Ports Checkout

Power Management Features

Symptom-to-FRU Index

Numeric Error Codes

Error Messages

No Beep Symptoms

LCD-Related Symptoms

Keyboard-Related Symptoms

Indicator-Related Symptoms

Power-Related Symptoms

PC Card (PCMCIA)-Related Symptoms

Speaker-Related Symptoms

Power Management-Related Symptoms

Peripheral-Device-Related Symptom

Intermittent Problems

Undetermined Problems

Flash UUID

Running the Diagnostics

FRU Removals and Replacements

FRU Service Procedures

1010 Battery ASM

1020 Hard Disk Drive

1030 Keyboard

1040 Modem Card

1050 DIMM Card

1060 LCD Unit ASM

1070 Upper Cover ASM

1080 Speaker ASM

1085 Select Button ASM

1090 Cable ASM and Cable ASM LED-R

1100 Fan ASM

1110 Modem Cable ASM

1120 Water Channel ASM

1130 System Board

1135 Rear Bracket

1140 PCMCIA Slots

1150 LCD Bezel ASM

1160 LCD Inverter ASM

1170 LCD Panel ASM (LCD Type A and B)

1180 LCD FPC ASM (LCD Type A)

1185 LCD FPC ASM (LCD Type B)

1190 Hinge ASM

Computer Parts Listing

LCD Unit Parts Listing (LCD Type A)

LCD Unit Parts Listing (LCD Type B)

Service Tools

Trademarks