IBM Z50, WorkPad Z50 User Manual

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IBM

Mobile

Systems

S37L-2095-00

WorkPad

z50 Mobile

Companion

(2608-1Ax)

Hardware Maintenance

Manual

 

March

1999

 

 

Note

Before using this information and the product it supports, be sure to read the general information under “Notices” on page 61.

First Edition (March 1999)

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

INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION “AS IS” WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE LIMITED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer or express or implied warranties in certain transactions; therefore, this statement may not apply to you.

This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements or changes to the products or the programs described in this publication at any time.

It is possible that this publication may contain references to, or information about, IBM products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country.

Requests for technical information about IBM products should be made to your IBM authorized dealer or your IBM marketing representative.

© Copyright International Business Machines Corporation 1999. All rights reserved. Note to US Government Users – Documentation related to restricted rights – Use, duplication, or disclosure is subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp.

© Copyright IBM Corp. 1999

iii

About This Manual

This manual contains service and reference information for the WorkPad z50, Mobile Companion. Use this manual along with the diagnostic software to troubleshoot problems effectively.

This manual is divided into sections as follows:

The Introduction section provides general information, and safety information required to service computers.

The product-specific section includes service, reference, and product-specific parts information.

Important

This manual is intended for trained service personnel who are familiar with WorkPad products.

Before servicing an IBM WorkPad product, be sure to review the safety information under “Safety Notices” on page viii and “Safety Information” on page xii.

iv IBM WorkPad z50, Mobile Companion iv

Contents

 

Introduction .........................................................................

vii

IMPORTANT SERVICE INFORMATION

VII

FRU Replacement Strategy .......................................................

vii

SAFETY NOTICES (MULTI-LINGUAL TRANSLATIONS)

VIII

SAFETY INFORMATION

XII

General Safety............................................................................

xii

Electrical Safety ........................................................................

xiii

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

xiv

Handling Electrostatic Discharge-Sensitive Devices.............

xvi

Grounding Requirements .........................................................

xvi

WORKPAD Z50 MOBILE COMPANION (2608)

1

READ THIS FIRST

1

SCREW TIGHTENING INFORMATION

2

PRODUCT OVERVIEW

5

CHECKOUT GUIDE

6

Audio Checkout............................................................................

7

Keyboard Checkout .....................................................................

8

Memory Checkout........................................................................

8

Modem Checkout .........................................................................

9

Power Systems Checkout.............................................................

9

Backup Battery Checkout (Nonrechargeable) .........................

13

The Battery Calibration Application ........................................

13

ROM Card Checkout .................................................................

14

TrackPoint Checkout .................................................................

15

Cradle Checkout ........................................................................

15

External Monitor Self-Test ........................................................

15

INSTALLING THE ROM/DRAM CARD

17

Removing the ROM/DRAM Card..............................................

18

Brightness/Contrast Buttons Checkout ....................................

19

POWER MANAGEMENT FEATURES

20

Full Power Mode .......................................................................

20

Suspend Mode ............................................................................

20

SYMPTOM-TO-FRU INDEX

21

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

21

Function-Related Symptoms......................................................

23

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

23

Infrared-Related Symptoms.......................................................

23

Keyboardor TrackPoint-Related Symptoms ..........................

24

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

24

Peripheral Device Related Symptoms ......................................

25

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

25

Other Symptoms .........................................................................

25

Intermittent Problems ................................................................

26

Undetermined Problems............................................................

26

RUNNING THE DIAGNOSTICS

27

PC Card Slot Test ......................................................................

27

UUID ..........................................................................................

28

RELATED SERVICE PROCEDURES

28

Status Indicators and Control Buttons .....................................

28

Application Launching Key Assignments .................................

29

REMOVING AND REPLACING DEFECTIVE FRUS

30

Important Notice ........................................................................

32

Removal reference .....................................................................

34

1010 Backup Batteries..............................................................

35

1020 ROM/DRAM Card ...........................................................

36

1030 Battery Pack.....................................................................

38

© Copyright IBM Corp. 1999

v

1040

Keyboard Assembly .........................................................

39

1050

Bottom Cover ...................................................................

40

1060

Mainboard .......................................................................

42

1070

LCD Bezel ........................................................................

43

1080

LCD Unit..........................................................................

44

1090

Inverter Card and LCD Panel ........................................

45

1110

FPC Assembly..................................................................

46

1120

Speaker.............................................................................

47

1130

Microphone......................................................................

47

1140

Audio Ports ......................................................................

48

1150

PC Card Slot Assembly ...................................................

48

1160

RJ-11 Assembly ...............................................................

50

1170

Hardware Button Board .................................................

51

1180

Top Cover ........................................................................

52

LOCATIONS

53

Front Right View........................................................................

53

Left View.....................................................................................

54

Right View ..................................................................................

54

Rear View ...................................................................................

55

Bottom View ...............................................................................

55

PARTS LISTING

56

System Unit FRU List ................................................................

57

LCD Unit Parts List...................................................................

58

Miscellaneous and Other Parts.................................................

59

Option Parts FRU List...............................................................

59

Other Parts .................................................................................

59

CRU ............................................................................................

 

59

Tools ...........................................................................................

 

59

Power Cord ................................................................................

60

NOTICES

 

61

Trademarks ................................................................................

61

vi IBM WorkPad z50, Mobile Companion vi

Introduction

Important Service Information

Important

Software fixes are customer installable. Such fixes are located on the PC Company Bulletin Board Service (BBS). The direct line for modem connection is 919-557- 0001 or tieline 255-0001 (IBM internal phone number).

Advise customers to contact the PC Company HelpCenter at 800-722-2227 if they need assistance in obtaining or installing software fixes.

Customers in Canada should call IBM HelpPC at 800-565- 3344 for assistance or down-load information. The Canadian BBS phone numbers are:

Montreal 515-938-3022

Toronto 905-316-4255

Vancouver 604-664-6464

Winnipeg 204-934-2735

FRU Replacement Strategy

Before Replacing Parts

Ensure that all software 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 mainboard. If you are instructed to replace either the processor board or the mainboard, and the first board that you replaced does not correct the problem, reinstall the original board, and 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 faulty FRU.

© Copyright IBM Corp. 1998

vii

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 assurezvous 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 è stata effettuata la sostituzione di una FRU, accertarsi che tutte le viti, le molle e tune 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.

viii IBM WorkPad z50, Mobile Companion viii

Safety Notice 2

The battery pack contains small amounts of harmful substances. Do not disassemble 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 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 á l'eau. Ne la mettez pas en courtcircuit. Pour la mettre au rebut, conformez-vous a 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 eftet, une batterie inappropriée risque de prendre feu ou d'exploser.

Akkus enthalten geringe Mengen von Nickel. Sie durfen 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.

© Copyright IBM Corp. 1998

ix

Safety Notice 3

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'aftichage 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 apres le lavage.

Die Leuchtstoffröhre im LCD~BiIdschirm enthält Quecksilber. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Der LCDBildschirm besteht aus Glas und kann zerbrechen, wenn er unsachgemaß 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 ii 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.

Safety Notice 4

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 protegéant 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.

x IBM WorkPad z50, Mobile Companion x

Safety Notice 5

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 0 provocare ustioni al 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.

Safety Notice 6

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 clièntele, 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.

© Copyright IBM Corp. 1998

xi

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. 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.

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 conductors.

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.

xiiIBM WorkPad z50, Mobile Companion xii

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 exposed 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.

© Copyright IBM Corp. 1998

xiii

Regularly inspect and maintain your electrical hand tools for safe operational condition.

Do not use worn or broken tools and testers.

Never assume that power has been disconnected from a circuit. First, check that it has been poweredoff.

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 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.)

If an electrical accident occurs:

-Use caution; do not become a victim yourself.

-Switch off power.

-Send another person to get medical aid while first aid is being administered.

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 hardware

xivIBM WorkPad z50, Mobile Companion xiv

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.

© Copyright IBM Corp. 1998

xv

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. Approved static straps protect the user from high-operating voltages (110V).

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 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.

xvi IBM WorkPad z50, Mobile Companion xvi

WorkPad z50 Mobile Companion (2608)

Read This First

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

Important

Only certified trained personnel should service the computer.

Read FRU service procedures before replacing any FRUs.

Replace FRUs only for the correct model.

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

FRUs should not be replaced because of a single, unreproducible failure. Single failures can occur from a variety of reasons that have nothing to do with a hardware problem, 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 log error and run the test again. Do not replace any FRUs if log errors do not appear.

Be careful not to replace a nondefective FRU.

WorkPad z50 Mobile Companion

1

Screw Tightening Information

Loose screws can cause reliability problems. The IBM WorkPad z50 addresses this problem with nylon coated screws. Tighten screws as follows:

Plastic to Plastic

Turn an additional 90 degrees after the screw head touches the surface of the plastic part.

90 Degrees More

Plastic

Logic card to Plastic

Turn an additional 180 degrees after the screw head touches the surface of the logic card.

180 Degrees More

Logic Card

Plastic

Torque Driver

If you have a torque driver, refer to the “Torque” instruction with each step.

Cradle Problems: If you suspect a problem with the cradle, see “Cradle Checkout” on page 15.

How to Diagnose Multiple FRUs: When the

adapter or the device has more than one FRU, the error code could be caused by any of them. Before replacing multiple FRUs, try removing or exchanging each FRU, one by one in the designated sequence, to see if the symptoms change.

2 IBM WorkPad z50, Mobile Companion 2

Attention

Pushing the WorkPad z50’s Power button will power on (or resume) the system, or put the system in suspend mode: there is no power-off state.

If the AC Adapter, battery pack, and backup battery are removed, the system is reset and all the stored data is lost. There is no lithium battery to retain memory while these power sources are removed.

What to Do First: The service personnel must fill in the following information in the parts exchange form or parts return form that is attached to the returned FRU:

__ 1 Name and phone number of service personnel __ 2 Date of service

__ 3 Date when the part failed __ 4 Date of purchase

__ 5 Failure symptoms, error codes appearing on the monitor, and beep symptoms

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

__ 7 Failing FRU name and part number

__ 8 Machine type, model number, and serial number __ 9 Customer’s name and address

Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following:

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 stress beyond normal use:

The following is not covered under warranty:

LCD panel cracked from the application of 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

Fuses blown by attachment of a nonsupported device

WorkPad z50 Mobile Companion

3

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

Missing parts may be a symptom of unauthorized service or modification.

Attention

When resetting the system, all programs and stored data other than the operating system will be erased.

Any password that is set for testing purposes should be disabled before returning the WorkPad z50 to the customer.

4 IBM WorkPad z50, Mobile Companion 4

Product Overview

Refer to the following table for an overview of the system features of the WorkPad z50 Mobile Companion:

Feature

Processor

Chipset

Graphic/Video

Controller

OS/APP ROM

Memory

Storage Memory

PC Card

I/O Ports

Description

NEC VR4121

NEC VRC4171A

ITE IT8181

20MB (32MB Japan)

16MB Upgradable to 48MB

CompactFlash Type II socket

One type III slot

RJ-11 Modem port (US/Canada/ Japan models only)

Infrared Serial port

External display port Cradle connector

Audio

Pointing Device

AC Adapter

Internal Modem

Battery Pack

Backup Battery

LCD Display

External earphone jack

External microphone jack

Internal speaker

Built-in microphone

TrackPoint III

45watt type

Only available for US/Canada/Japan models

16. 65watt

Size AAA x 2

8.2" (inch) DSTN

WorkPad z50 Mobile Companion

5

Checkout Guide

Use the following procedure as a guide for computer problems.

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

2.Verify the symptoms by attempting to re-create the failure by running the diagnostic test (refer to “Running the Diagnostics Test” on page 27) or by repeating the same operation.

Note

To run the diagnostics test, refer to “Running the Diagnostics” on page 27.

If the symptoms are intermittent and cannot be re-created (and therefore not verified), go to “Symptom-to-FRU Index” on page 21 and then go to “Intermittent Problems” on page 26.

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 “Refer To” column.

Symptoms (Verified) Refer To

Power failure: The power indicators (AC Adapter LED or Power on/Battery status LED) are not lit.

Audio is not properly functioning.

Keyboard does not work properly.

Internal fax/modem does not work.

Suspect mainboard or ROM card problems.

TrackPoint problems.

Cradle does not communicate properly.

External monitor does not display.

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

“Power Systems Checkout” on page 9.

“Audio Checkout” on page 7.

“Keyboard Checkout” on page 8.

“Modem Checkout” on page 9.

“ROM Card Checkout” on page 14.

“TrackPoint Checkout” on page 15.

“Cradle Checkout” on page 15.

“External Monitor Self-Test” on page 15.

“Running the Diagnostics Test” on page 27.

6 IBM WorkPad z50, Mobile Companion 6

Symptoms (Verified) Refer To

Other symptoms (such as LCD display problems).

PC cards do not work.

Brightness/contrast buttons do not work.

“Symptom-to-FRU Index” on page 21.

“PC Card Slots Test” on page 27.

“Brightness/Contrast Buttons Checkout” on page 19.

Audio Checkout

Speaker Checkout: If you suspect a problem with the speaker do the following:

1.Play an audio file. If no sound is heard, go to the diagnostic menu (see “Running the Diagnostics Test” on page 27).

2.Select Audio and run the diagnostic test.

3.If the test detects an audio problem, do the following: Click Start, Programs, WorkPad, and then Rapid Access. Check that “Mute” is not enabled in the Rapid Access utility. Click the “Volume & Sounds” icon in the Control Panel, adjust the volume to mid position and click any sound: if no sound is heard, do the following one at a time:

Reseat the connector

Replace the speaker

Replace the mainboard

Go to “Microphone Checkout” if the speaker is working properly.

Microphone Checkout: If you suspect a problem with the microphone, first check if the speaker is working (see above), then do the following:

1.Press the microphone button and record and playback any sound.

2.If no sound is heard, do the following one at a time:

Reseat the microphone cable

Replace the microphone cable

Replace the mainboard

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Keyboard Checkout

If the keyboard does not work or an unexpected character appears, make sure that the flexible cable extending from the keyboard is correctly seated in the connector on the mainboard. If the keyboard cable connection is correct, run the Keyboard Test by doing the following:

1.Go to the diagnostic menu (see “Running the Diagnostics Test” on page 27).

2.Select Keyboard and run the diagnostic test. A layout of the keyboard appears on the screen.

3.Check that when each key is pressed, the key’s position on the keyboard layout on the screen changes to a blue square.

4.Press OK to end the test.

If the tests detect a keyboard problem, do the following one at a time to correct the problem. Do not replace a nondefective FRU:

Reseat the keyboard cable.

Replace the keyboard.

Replace the mainboard.

Memory Checkout

The WorkPad z50 Mobile Companion is shipped with 16MB on-board memory. Memory can be upgraded to 48MB by adding a single 32MB DRAM card.

Defective memory cards may show an error message during the POST or cause the system to hang or stop system operations.

Refer to the following to isolate memory problems:

1.Remove all power sources (AC power, battery pack, and backup battery). Remove any installed DRAM card from its slot (see page 18).

2.Connect to a power source and turn on the WorkPad z50.

3.If an error appears during POST, replace the mainboard.

4.Remove all power sources (AC power, battery pack, and backup battery) and reinstall the DRAM card.

5.Connect to a power source, then turn on the WorkPad z50.

6.If an error appears during POST, replace the DRAM card.

8 IBM WorkPad z50, Mobile Companion 8

Modem Checkout

If a modem problem occurs, do the following:

1.Open the Terminal program. Double click the “Make a New Session” icon to open the Session Properties window.

2.Click “Configure…”. In the Device Properties window check the “Manual Dial” box.

3.Issue the ATA command.

4.If there is no sound, replace the mainboard.

Note: The US, Canada, and Japan models have an internal fax/modem; the European models do not.

Power Systems Checkout

To determine whether a power systems problem is due to the AC Adapter or the battery pack, do the following:

1.Remove the battery pack.

2.Connect the AC Adapter and lock the battery release lock. Check that power is supplied.

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

If you suspect the problem is due to the AC Adapter, go to “AC Adapter Checkout”.

If you suspect the problem is due to the battery pack, go to “Battery Pack Checkout”.

External Power/Charge Status LED indicates the following status:

LED

AC Adapter

Battery Pack

Charge

 

 

 

Status

 

 

 

 

Amber

Connected

Li-ion (standard or high-

Not full

 

 

capacity battery)

 

Green

Connected

Li-ion (standard or high-

Full

 

 

capacity battery)

 

Green

Connected

Dry cell battery is

 

 

connected or

 

 

 

no battery is connected

 

Not lit

Not

 

connected

 

 

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