IBM Laptop Z50 User Manual
S37L-2095-00  
IBM Mobile Systems  
WorkPad z50 Mobile Companion (2608-1Ax)  
Hardware Maintenance Manual  
March 1999  
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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  
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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  
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Contents  
Introduction .........................................................................vii  
IMPORTANT SERVICE INFORMATION  
VII  
FRU Replacement Strategy.......................................................vii  
SAFETY NOTICES (MULTI-LINGUAL TRANSLATIONS)  
SAFETY INFORMATION  
VIII  
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)  
READ THIS FIRST  
SCREW TIGHTENING INFORMATION  
PRODUCT OVERVIEW  
1
1
2
5
6
CHECKOUT GUIDE  
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  
Keyboard- or 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  
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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  
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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  
Toronto  
515-938-3022  
905-316-4255  
604-664-6464  
204-934-2735  
Vancouver  
Winnipeg  
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  
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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 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  
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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 court-  
circuit. 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  
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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 LCD-  
Bildschirm 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
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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  
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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.  
xii  
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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  
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•
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 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 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  
xiv  
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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  
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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.  
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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.  
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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.  
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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  
__ 2  
__ 3  
__ 4  
__ 5  
Name and phone number of service personnel  
Date of service  
Date when the part failed  
Date of purchase  
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  
__ 8  
__ 9  
Failing FRU name and part number  
Machine type, model number, and serial number  
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  
•
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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.  
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Product Overview  
Refer to the following table for an overview of the system  
features of the WorkPad z50 Mobile Companion:  
Feature  
Processor  
Chipset  
Description  
NEC VR4121  
NEC VRC4171A  
ITE IT8181  
Graphic/Video  
Controller  
OS/APP ROM  
Memory  
20MB (32MB Japan)  
16MB Upgradable to 48MB  
CompactFlash Type II socket  
One type III slot  
Storage Memory  
PC Card  
I/O Ports  
RJ-11 Modem port (US/Canada/  
Japan models only)  
Infrared  
Serial port  
External display port  
Cradle connector  
Audio  
External earphone jack  
External microphone jack  
Internal speaker  
Built-in microphone  
Pointing Device  
AC Adapter  
TrackPoint III  
45watt type  
Internal Modem  
Only available for US/Canada/Japan  
models  
Battery Pack  
Backup Battery  
LCD Display  
16. 65watt  
Size AAA x 2  
8.2" (inch) DSTN  
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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.  
“Power Systems Checkout”  
on page 9.  
Audio is not properly  
functioning.  
“Audio Checkout” on page 7.  
Keyboard does not work  
properly.  
“Keyboard Checkout” on  
page 8.  
“Modem Checkout” on page 9.  
Internal fax/modem does  
not work.  
Suspect mainboard or  
ROM card problems.  
“ROM Card Checkout” on  
page 14.  
TrackPoint problems.  
“TrackPoint Checkout” on  
page 15.  
Cradle does not  
communicate properly.  
“Cradle Checkout” on page  
15.  
External monitor does  
not display.  
“External Monitor Self-Test”  
on page 15.  
The diagnostic test  
detected an error and  
displayed an error code.  
“Running the Diagnostics  
Test” on page 27.  
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Symptoms (Verified) Refer To  
Other symptoms (such  
as LCD display  
problems).  
“Symptom-to-FRU Index” on  
page 21.  
PC cards do not work.  
“PC Card Slots Test” on  
page 27.  
Brightness/contrast  
buttons do not work.  
“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.  
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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  
Connected  
Connected  
Connected  
Battery Pack  
Charge  
Status  
Amber  
Green  
Green  
Not full  
Li-ion (standard or high-  
capacity battery)  
Li-ion (standard or high-  
capacity battery)  
Full  
Dry cell battery is  
connected or  
—
no battery is connected  
Not lit  
—
—
Not  
connected  
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AC Adapter Checkout: You are here because the  
WorkPad z50 fails only when the AC Adapter is used.  
•
If the power problem occurs only when the cradle is  
used, replace the cradle.  
•
If the power-on indicator for the AC Adapter does not  
turn on, check the power cord of the AC Adapter for  
correct continuity and installation.  
1. Unplug the AC Adapter cable from the WorkPad z50  
and measure the output voltage at the plug of the AC  
Adapter cable. See the following figure:  
2
1
Pin  
1
2
Voltage (V dc)  
19 V (+ 1.5 V, - 0 V)  
Ground  
a. If the voltage is correct, replace the mainboard.  
b. If the voltage is still incorrect, go to the next step.  
2. Unplug the AC Adapter cable from the ac power  
outlet and wait 5 minutes or longer to allow the  
overvoltage protection circuit or other protection  
circuits to be fully discharged and initialized.  
3. Plug the AC Adapter cable into the ac power outlet.  
4. Measure the output voltage of the AC Adapter.  
5. If the voltage is still not correct, replace the AC  
Adapter.  
Note:  
An audible noise from the AC Adapter does not  
always indicate a defect.  
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Battery Pack Checkout: If the battery pack or the optional  
high-capacity battery have a problem, refer to the following:  
1. Enter suspend mode by pressing the Power button.  
2. Remove the battery pack and check for any  
mechanical damage. Replace the battery pack if it is  
damaged.  
Note:  
Damage to the battery pack caused by the  
customer is not covered by the warranty.  
3. Remove the battery pack and measure the voltage  
between the battery terminals. See the following  
figure:  
1
7
Terminal  
1
7
Voltage (V dc)  
11.1 V  
Ground (-)  
4. If the voltage is less than 11.1 V dc, the battery pack  
has been discharged. Recharge the battery pack.  
If the voltage is still less than 11.1 V dc after  
recharging, replace the battery pack.  
If the battery pack is extremely hot (over 50°C),  
replace the battery pack and the mainboard.  
If the voltage is correct, but you still suspect a  
problem with the battery pack, go to “Running the  
Diagnostics Test” on page 27.  
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Checking Operational Charging: There is no difference in  
battery charging time whether the system is fully operational  
or not. To check the battery charging, use a discharged  
battery pack or a battery pack that has less than 50% of total  
power remaining.  
Turn on the WorkPad z50 while the AC Adapter is connected  
to the system. The External Power/Charge Status LED will  
change to amber while the battery is charging. When the  
battery is fully charged (after about 1 – 2.5 hrs., depending  
on the battery’s initial charge) the battery terminal voltage  
should be around 12.6V dc. If the voltage is far less, or has  
not increased from the initial voltage, then repeat the  
procedure with another discharged battery pack. If this  
brings the same result, then suspect a mainboard failure.  
Optional Dry Cell Battery Checkout: If the optional Dry  
Cell Kit (dry cell battery pack) has a problem, refer to the  
following:  
1. Enter suspend mode by pressing the Power button.  
2. Remove the dry cell battery pack and measure the  
voltage between the battery terminals. See the  
following figure:  
7
1
Terminal  
1
7
Voltage (V dc)  
8.8 – 12.8 V  
Ground (-)  
3. If the voltage is less than 8.8 V dc, the dry cell battery  
pack has been discharged. Replace the dry cells.  
If the dry cell battery pack is extremely hot, it must be  
replaced.  
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Backup Battery Checkout  
(Nonrechargeable)  
If removing all power sources except for the backup battery  
results in the system being reset, suspect a problem with the  
backup batteries. Refer to the following:  
1. Enter suspend mode by pressing the Power button.  
2. Remove the AAA batteries and measure the voltage  
between the battery terminals. The voltage should be  
1.1–1.6 V dc per battery.  
•
•
If the voltage is correct, replace the mainboard.  
If the voltage is less than 1.1 V dc per battery, then  
the batteries have been discharged. Replace the  
batteries.  
•
If the backup battery discharges quickly after  
replacement, replace the mainboard.  
Note:  
Make sure either the battery pack is installed or  
the AC Adapter is connected. If the backup  
batteries are removed and no other power  
source is available (AC Adapter or battery pack),  
the system is reset, and all the stored data is  
lost.  
The Battery Calibration Application  
The Battery Calibration application tests the battery to  
ensure that it charges to its full capacity. You must first  
connect the AC Adapter before you use the Battery  
Calibration application. Click Start, Programs, WorkPad.  
Click the Battery Calibration icon to open the "Battery  
Calibration" window:  
Press the Start button to begin the program. You will see  
the following dialog window:  
Note: If the AC Adapter is not connected when you  
start the Battery Calibration application, you will  
see a dialog window prompting you to connect it  
before you continue.  
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Press OK to close the message window, then click Start to  
begin the calibration. You will see the following dialog  
window:  
Press OK to close this dialog window.  
The Battery Calibration application will charge the Li-ion  
battery to its full capacity. When the battery reaches full  
capacity, the Battery Calibration application will allow the  
battery to fully discharge. When the battery is fully  
discharged, the application will charge the battery again.  
When the battery has been charged to 2% of its capacity,  
the Battery Calibration application will stop.  
Note: During the battery calibration process, the AC  
Adapter must be connected at all times.  
To reduce the time it takes to discharge the  
battery, increase the LCD panel brightness to  
the maximum level and turn off the automatic  
backlight control in the Control Panel.  
It takes up to 12 hours to calibrate the standard  
battery pack. The high-capacity battery pack  
needs to go through the calibration procedure  
twice.  
ROM Card Checkout  
If you suspect the ROM card has a problem, refer to the  
following:  
1. Remove all power sources (AC power, battery pack,  
and backup battery).  
2. Reinstall the ROM card.  
3. Connect to a power source. If the problem persists,  
replace the ROM card.  
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TrackPoint Checkout  
The TrackPoint adjusts the pointer sensor automatically.  
During this process, the pointer moves on the screen  
automatically for a short time. This self-acting pointer  
movement can occur when a slight, steady pressure is  
applied to the TrackPoint pointer. You must readjust it if the  
temperature has exceeded its normal temperature range.  
This symptom does not indicate 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 a pointing stick problem occurs,  
do the following:  
1. Go to the diagnostic menu (see “Running the  
Diagnostics Test” on page 27).  
2. Select TrackPoint and run the diagnostics tests.  
3. Verify that the item is selected.  
4. Move to another item with the pointing stick.  
5. Press the pointing stick (press-to-select) and verify  
that the item is selected.  
6. Verify that both buttons work correctly.  
If the click buttons do not work, replace the mainboard. If  
the pointing stick does not work, do the following actions one  
at a time to correct the problem. Do not replace a  
nondefective FRU.  
•
•
•
Reseat the TrackPoint cable.  
Replace the keyboard.  
Replace the mainboard.  
Cradle Checkout  
Use the following procedure to isolate a problem with the  
cradle. The cradle attaches to the system expansion  
connector at the bottom of the WorkPad z50.  
1. Enter suspend mode.  
2. Remove the failing device from the cradle.  
3. Unplug the AC Adapter from the cradle, if attached.  
4. Remove the cradle from the WorkPad z50.  
5. Reconnect the failing device directly to the WorkPad  
z50. (If another device is already connected to the  
WorkPad z50, remove it first.)  
6. If the failing device works properly, replace the cradle.  
External Monitor Self-Test  
If a monitor problem occurs, use the following instructions to  
correct the problem:  
1. Test the external monitor and cable on another  
system to make sure they are working correctly.  
2. Connect the monitor to the WorkPad z50.  
3. Go to the diagnostic menu (see “Running the  
Diagnostics Test” on page 27) and select Display.  
4. If the external monitor does not display correctly,  
change the mainboard.  
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Installing the ROM/DRAM Card  
This section describes how to install the ROM card or the  
optional DRAM card to the WorkPad z50.  
Note: When you remove the ROM/DRAM card, you will lose  
all stored data. Before you remove the ROM/DRAM card, be  
sure to back up all data and applications in the base  
memory.  
Caution: Before removing or inserting the ROM/DRAM card,  
all power sources (AC power, the main battery pack, and the  
backup batteries) must be removed.  
Follow these instructions when inserting the ROM/DRAM  
card:  
1. Place the WorkPad z50 into suspend mode and  
disconnect AC power.  
2. Turn the WorkPad z50 upside down.  
3. Remove the main battery and remove the backup  
batteries.  
4. Unscrew the single (captive) screw that secures the  
ROM/DRAM card compartment cover to the chassis.  
Remove the cover.  
DRAM card  
ROM card  
Unscrew the screw  
that secures the  
ROM/DRAM card cover  
to the chassis and  
remove the ROM/DRAM  
card cover.  
5. Locate the ROM/DRAM card Slot.  
6. Find the notch on the side of the card.  
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7. With the notched end of the card toward the right side  
of the socket, insert the card at an angle of  
approximately 20 degrees into the socket; press it in  
firmly as shown (1). Gently pivot the card until it snaps  
into place (2).  
Attention  
To avoid damaging the ROM/DRAM card, do not touch its  
contact edge.  
8. Ensure that the ROM/DRAM card is securely inserted in  
the slot.  
9. Replace the ROM/DRAM card cover over the memory  
slot, aligning the back side of the cover first; then  
tighten the screw.  
10. Attach the main battery and insert the backup batteries.  
11. Turn the WorkPad z50 top side up. Connect the AC  
Adapter and cables; then turn on the WorkPad z50.  
Attention  
Handling a Screwdriver  
•
•
Use a screwdriver that fits the screw.  
Use the screwdriver perpendicular to the head of the  
screw.  
Handle the screwdriver properly; otherwise, you might  
damage the screw.  
Removing the ROM/DRAM Card  
Note: Before removing the ROM/DRAM card, back up all  
data and applications in the base memory. All data and  
installed applications will be lost by removing the  
ROM/DRAM card. The ROM needs to be reinstalled before  
starting the POST or running Windows CE.  
Caution: Before removing the ROM/DRAM card, all power  
sources (AC power, the main battery pack, and the backup  
batteries) must be removed.  
Follow these instructions when removing the ROM/DRAM  
card:  
1. Turn off the WorkPad z50.  
2. Disconnect AC power.  
3. Turn the WorkPad z50 upside down.  
4. Remove the main battery and remove the backup  
batteries.  
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5. Unscrew the single (captive) screw that secures the  
ROM/DRAM card compartment cover to the chassis.  
Remove the cover.  
6. Using your fingers or a small screwdriver, press out the  
two latches on the sides of the card away from the slots.  
The ROM/DRAM card should pop out slightly  
.
Removing the DRAM  
and ROM Cards  
DRAM Card  
ROM Card  
Pull the tabs in  
the direction of the arrows  
to release the cards.  
7. Gently pull out the card.  
8. Replace the ROM/DRAM card cover over the memory  
slot, aligning the back side of the cover first; then  
tighten the screw.  
9. Attach the main battery and insert the backup batteries.  
10. Turn the WorkPad z50 top side up. Connect the AC  
Adapter and cables; then turn on the WorkPad z50.  
Brightness/Contrast Buttons Checkout  
If you suspect a problem with the brightness/contrast buttons  
do the following actions one at a time to correct the problem.  
Do not replace a nondefective FRU:  
•
Reseat the inverter cables and connectors to the  
mainboard and the LCD panel.  
Replace the inverter card  
•
•
Replace the mainboard  
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Power Management Features  
The power management features are designed to save as  
much electricity as possible by putting components into a  
low-power consumption mode as often as possible. This  
low-power mode is referred to as “suspend” mode.  
Full Power Mode  
The WorkPad z50 operates in Full power mode when power  
management is disabled and the AC Adapter is connected.  
Suspend Mode  
In suspend mode, the system is powered off except for the  
system DRAM. The WorkPad z50 enters suspend mode  
when the system remains idle for a specified amount of time  
or under one of the following conditions:  
•
•
•
•
•
•
The Power button is pressed.  
The LCD panel is closed.  
A Windows CE power management time-out occurs.  
The Windows CE Suspend icon is clicked.  
The battery release lock is released.  
The remaining battery capacity of the battery pack is  
very low.  
•
A notification event set in the “Alarms” window of the  
World Clock application in the Control Panel occurs.  
Attention  
The system will not enter suspend mode after an idle  
time-out under the following conditions:  
The serial port is connected to another system running  
Windows CE services.  
The WorkPad z50 is connected to a network through the  
PCMCIA LAN card.  
The system will resume to full power mode under one of the  
following conditions:  
•
•
•
•
•
•
The Power button is pressed while in suspend mode.  
An application launching key is pressed.  
The LCD panel is opened.  
An internal fax/modem ring-in occurs.  
The Microphone button is pushed.  
The Notification button is pushed when the  
notification LED blinks.  
•
•
A built-in data/fax modem ring occurs.  
The serial port is connected to another system for  
transmitting and receiving data.  
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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 did not solve the problem, put  
the original part back in the WorkPad z50. Do not  
replace a nondefective FRU.  
This index can also help you determine the next possible  
FRUs to be replaced when servicing the WorkPad z50.  
Numeric error codes show the errors detected in system  
operation. 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 26.  
Note: For IBM devices not supported by diagnostic  
codes in WorkPad computers, see the manual  
for that device.  
Numeric Error Codes  
Symptom / Error  
FRU / Action in Sequence  
Mainboard  
1XX  
101 IR error  
101 IR error  
2XX  
201 checksum error  
202 DRAM test error (on  
board)  
203 DRAM test error  
(DRAM module)  
204 VRAM test error  
1.  
2.  
3.  
Reinstall ROM card  
ROM card  
201 ROM checksum error  
Mainboard  
Mainboard  
202 DRAM test error (on  
board DRAM)  
1.  
2.  
3.  
Reinstall DRAM module  
203 DRAM test error (DRAM  
module)  
DRAM module  
Mainboard  
Mainboard  
204 VRAM test error  
3XX  
301 Keyboard error  
1.  
2.  
3.  
Reinstall keyboard  
301 Keyboard error  
Keyboard  
Mainboard  
4XX  
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401 LED board error  
Symptom / Error  
401 LED board error  
FRU / Action in Sequence  
1.  
LED board  
2.  
Mainboard  
5XX  
501 Battery error  
1.  
Battery  
501 Battery error  
2.  
Mainboard  
6XX  
601 Audio playback error  
602 Audio recording error  
1.  
2.  
1.  
2.  
Speaker  
601 Audio playback error  
Mainboard  
Microphone  
Mainboard  
602 Audio recording error  
7XX  
701 Display error  
1.  
LCD panel  
701 Display error  
2.  
Mainboard  
8XX  
801 Serial port test error  
1.  
Serial cable  
801 Serial port error  
2.  
Mainboard  
9XX  
901 PC card/CF test error  
Mainboard  
Mainboard  
901 PC card/CF test error  
86XX  
8601 Mouse test error  
8601 Mouse test error  
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Function-Related Symptoms  
FRU / ACTION IN SEQUENCE  
Symptom / Error  
1.  
Go to “Suspend Mode”  
on page 20, and check  
that the WorkPad z50  
can enter suspend  
mode.  
The system does not  
suspend or resume when the  
LCD is closed or opened.  
2.  
LCD panel  
Mainboard  
3.  
Go to “Memory Checkout” on  
page 8.  
The memory count (size)  
appears different from actual  
size.  
Go to “Intermittent Problems”  
on page 26.  
The system hangs  
intermittently.  
Indicator-Related Symptoms  
Symptom / Error  
FRU / Action in Sequence  
Mainboard  
The indicator incorrectly  
remains off or on, but system  
runs correctly.  
1.  
Check that a correct  
The external/power status  
LED indicator blinks from  
green to amber.  
battery is installed.  
Battery pack  
Mainboard  
2.  
3.  
1.  
2.  
Battery pack  
Mainboard  
The battery indicator does not  
turn on when the battery is  
installed.  
Infrared-Related Symptoms  
Symptom / Error  
FRU / Action in Sequence  
1.  
Make sure the setup for  
the IR is correct. Use  
the WorkPad z50  
Unable to communicate using  
the Infrared (IR) Port.  
Configuration utility.  
2.  
Make sure there are no  
fluorescent lights near the  
WorkPad z50. The  
WorkPad z50 may receive  
optical noise from the  
fluorescent light.  
3.  
Run the advanced  
diagnostic test. If an error  
occurs, replace the parts  
shown by the FRU code.  
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Keyboard- or TrackPoint-Related Symptoms  
Symptom / Error  
FRU / Action in Sequence  
1.  
On the Windows  
The keyboard (one or more  
keys) does not work.  
Taskbar, check that  
Caps Lock or Num Lock  
are not enabled.  
2.  
Reseat the keyboard cable  
on the mainboard.  
3.  
4.  
1.  
Keyboard  
Mainboard  
Check the “TrackPoint”  
settings in the Control  
Panel.  
The TrackPoint does not  
work.  
2.  
3.  
Reseat the keyboard cable  
on the mainboard.  
Go to “TrackPoint  
Checkout” on page15.  
4.  
5.  
Keyboard  
Mainboard  
See “TrackPoint Checkout”  
on page 15.  
The pointer moves  
automatically or does not  
work correctly.  
LCD-Related Symptoms  
Symptom / Error  
FRU / Action in Sequence  
LCD backlight not working.  
LCD too dark.  
1.  
Open the “Display  
Properties” window in  
the Control Panel.  
Check that the auto dim  
setting is not enabled  
under the “Backlight”  
tab.  
LCD brightness cannot be  
adjusted.  
LCD contrast cannot be  
adjusted.  
2.  
Reseat the LCD cable and  
connectors.  
3.  
4.  
5.  
1.  
LCD assembly  
Inverter assembly  
Mainboard  
Reseat the LCD cable  
and connectors.  
LCD screen unreadable.  
Non-readable characters.  
Screen abnormal.  
2.  
3.  
4.  
LCD assembly  
Inverter assembly  
Mainboard  
Wrong color displayed.  
LCD assembly  
LCD has extra horizontal or  
vertical lines displayed.  
1.  
Hinge screws  
Hinge group  
LCD lid is loose.  
2.  
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Peripheral Device Related Symptoms  
Symptom / Error  
FRU / Action in Sequence  
1.  
Check that the external  
monitor is enabled in the  
Rapid Access utility.  
The external monitor does  
not work correctly.  
2.  
Check that the external  
monitor can display at  
640x480 and 800x600, @  
75Hz refresh rate.  
3.  
Connect the external  
monitor to another PC. If  
the monitor works fine,  
replace the mainboard. If  
not, replace the external  
monitor.  
1.  
Run serial port wrap  
test.  
Serial port device problems.  
2.  
3.  
4.  
Device  
Mainboard  
Device cable  
Note: The serial port and the  
infrared port can not be used at  
the same time.  
Power-Related Symptoms  
Symptom / Error  
FRU / Action in Sequence  
1.  
Go to “Power Systems  
Checkout” on page 9.  
System enters suspend  
during operation.  
2.  
3.  
Battery pack  
Mainboard  
4.  
Check the power outlet  
Other Symptoms  
Symptom / Error  
FRU / Action in Sequence  
See “Cradle Checkout” on  
page 15.  
Errors occur only when the  
cradle is used.  
PC Card slots assembly.  
PC Card slot pin is damaged.  
Note: If you cannot find a symptom or an error in this list  
and the problem remains, see “Undetermined Problems”.  
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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, electrostatic discharge, or  
software errors. FRU replacement should be considered  
only when a recurring problem exists.  
When analyzing the intermittent problem, do the following:  
1. Run the diagnostic test for the mainboard in loop  
mode.  
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.  
Undetermined Problems  
You are here because the diagnostic tests did not identify  
which adapter or device failed, installed devices are  
incorrect, a short circuit is suspected, or the system is  
inoperative. Follow these procedures to isolate the failing  
FRU (do not isolate nondefective FRUs).  
Verify that all attached devices are supported by the  
WorkPad z50.  
Verify that the power supply being used at the time of the  
failure is operating correctly. (See “Power Systems  
Checkout” on page 9.)  
1. Enter suspend mode.  
2. Visually check them for damage. If any problems are  
found, replace the FRU.  
3. Remove or disconnect all of the following devices:  
a. Non-IBM devices  
b. Devices attached to the cradle  
c. External devices  
d. Battery pack  
e. DRAM  
f. PC Cards  
g. Compact Flash Cards  
4. Turn on the WorkPad z50.  
5. Determine if the problem has changed.  
6. If the problem does not reoccur, 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 nondefective FRU.  
a. Mainboard  
b. LCD assembly  
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Running the Diagnostics  
The following table lists the special tools used in the  
diagnostics:  
Tool Name  
FRU P/N  
05K2846  
35G4703  
05K2845  
Serial wrap connector  
PCMCIA wrap card  
CompactFlash wrap converter  
Use either the TrackPoint or the cursor move keys to interact  
with the tests. The Enter key works the same as selecting  
the OK icon to reply OK.  
1. Click Start, then Run. In the "Run” dialog window  
Open box, type “\Windows\ibmdiag.exe”. Click OK.  
The basic diagnostic menu appears.  
2. Start the Advanced Diagnostic test by pressing  
Ctrl+A on the basic diagnostic menu. The Serial and  
PC Card devices will appear on the diagnostic menu.  
3. Click on a device to run the test. The test progress  
window appears. A confirmation message box will  
appear after exiting each test: click Yes if the test  
ends without any errors.  
PC Card Slot Test  
Insert the PCMCIA wrap card into the PC card slot for the  
PCMCIA test: insert the CompactFlash wrap converter into  
the CompactFlash slot for the CompactFlash slot test. Refer  
to the previous section, “Running the Diagnostics” to run the  
tests.  
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UUID  
A UUID (universal unique ID) is uniquely assigned to each  
system board for system management purposes. The UUID  
is stored on the EEPROM on the board.  
Related Service Procedures  
This section provides information about the following:  
•
•
“Status Indicators and Control Buttons”  
“Application Launching Key Assignments” on page 29  
Status Indicators and Control Buttons  
The system status indicators show the current WorkPad z50  
status in different colors (green and amber). The control  
buttons—1.Notification, 3.Microphone, and 5.Power—are  
shown in the illustration below.  
Indicator  
Color  
Meaning  
Notification  
Amber  
The system is receiving a  
transfer call. Push the  
Notification button to stop  
the transfer.  
1.  
External  
Green  
Amber  
The battery is fully  
charged or the  
rechargeable battery pack  
is absent (see “Power  
Systems Checkout” on  
page 9).  
5.  
Power/Charge  
Status (this LED  
is on whenever  
the AC Adapter  
is connected)  
Battery charging  
(see “Power Systems  
Checkout” on page 9)  
To record a message, push the Microphone button; the  
Voice Recorder window will appear. Click the Record button  
to start recording; click the Stop button to stop recording.  
There is no record LED.  
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Application Launching Key Assignments  
The applications keys are programmed to launch preset  
software applications. The following table shows the  
application keys and their corresponding functions:  
Key  
Description  
A1  
Launch or switch to the Windows CE Inbox  
A2  
Launch Windows Explorer or switch to next  
Explorer Window  
A3  
A4  
A5  
A6  
Launch or switch to Calendar  
Launch or switch to Contacts  
Launch or switch to Tasks  
Launch Pocket Word or switch to next Pocket  
Word window  
A7  
A8  
A9  
Launch Pocket Excel or switch to next Pocket  
Excel window  
Launch Pocket PowerPoint or switch to next  
Pocket PowerPoint window  
Launch Pocket Access or switch to next  
Pocket Access window  
A10  
A11  
A12  
Launch or switch to Calculator  
Launch or switch to Voice Recorder  
Launch or switch to Rapid Access  
To view the application keys and their corresponding  
functions, click on the Launching Keys icon in the Control  
Panel to bring up the “Launching Keys Properties” window.  
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Removing and Replacing Defective FRUs  
This section provides information on removing and replacing  
FRUs.  
•
Do not damage any part. Only certified and trained  
personnel should service the WorkPad z50 Mobile  
Companion.  
•
The arrows in the “Removals and Replacements”  
section show the direction of movement 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: Translation on page viii  
Before the WorkPad z50 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  
WorkPad z50. Verify this by shaking the WorkPad z50  
and listening for rattling sounds. Metallic parts or metal  
flakes can cause electrical shorts.  
Safety Notice 2: Translation on page ix  
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 pack or  
backup 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.  
Safety Notice 6: Translation on page xi  
Before removing any FRU, place the WorkPad z50 into  
suspend mode, unplug all power cords from electrical  
outlets, then disconnect any interconnecting cables and  
remove the battery pack and backup batteries.  
CAUTION:  
If all power sources are removed from the WorkPad z50,  
all data and applications will be lost. If the problem is  
considered a software problem stored on DRAM  
memory, approach the problem from that standpoint  
before removing all power sources.  
Attention: The mainboard is sensitive to, and can be  
damaged by, electrostatic discharge.  
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An electrostatic discharge (ESD) strap (P/N 6405959) must  
be used to establish personal grounding.  
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Important Notice  
The WorkPad z50 Mobile Companion uses special nylon-  
coated screws with the following characteristics:  
•
•
They maintain tight connections.  
They do not easily come loose, even with shock or  
vibration.  
But:  
•
•
They need additional force to tighten.  
They should be used only once.  
Do the following when you service this machine:  
•
•
•
Keep the screw kit (P/N 05K5941) in your tool bag.  
Always use new screws.  
Use a torque screwdriver.  
Screw Information: The following types of screws are used  
in this machine. Use the correct screw in the Screw Kit  
(P/N 05K5941) when replacing any FRUs.  
Screw Screw  
No.  
Type  
of  
Color  
Length  
(mm)  
Head  
3
5
6
7
Flat  
M2.5  
Black  
Silver  
Silver  
Black  
4.0/6.0  
5.0  
Flat  
4.0/6.0  
8.0  
Pan  
M2.0  
Flat  
M2.5  
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Unplugging and Plugging Flexible Cables:  
Two types of cable and connectors are used in the WorkPad  
z50. Some connectors have a clasp, which must be  
unlocked before removing the cable. Unlock the connector  
by pulling up the clasp with your fingernail or a small flat-  
tipped screwdriver. Then pull out the cable from the  
connector. Refer to the following illustrations:  
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Removal reference  
The chart below shows the order for removing FRUs. When  
a FRU has been removed, follow the arrows to the FRU (or  
FRUs) that can be removed next.  
1010 Backup Batteries  
1020 ROM/DRAM Card  
1030 Battery Pack  
1040 Keyboard Assembly  
1050 Bottom Cover  
1060 Mainboard  
1070 LCD Bezel  
1080 LCD Unit  
1090 Inverter Card and LCD  
Panel  
1110 FPC Assembly  
1120 Speaker  
1130 Microphone  
1150 PC Card Slot Assembly  
1160 RJ-11 Assembly  
1170 Hardware Button Board  
1180 Top Cover  
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1010 Backup Batteries  
1.Turn the WorkPad z50 upside down.  
Step  
2
Size (Quantity)  
Color  
Black  
Torque  
3 kgcm  
Length  
4.0 mm  
Coin screw  
M2.5 (1)  
Note: You can loosen the captive screw in step 2 but  
,
cannot remove it from the backup battery cover.  
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1020 ROM/DRAM Card  
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Attention  
Remove all power sources from the WorkPad z50 before  
replacing the ROM/DRAM card.  
Turn the WorkPad z50 upside down.  
1.  
DRAM Card  
ROM Card  
Step  
2
Size (Quantity)  
M2.5 (1)  
Color  
Black  
Torque  
3 kgcm  
Length  
4.0 mm  
Note: You can loosen the captive screw in step 2 but  
,
cannot remove it from the ROM/DRAM card cover.  
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1030 Battery Pack  
Turn the WorkPad z50 upside down.  
1.  
Note  
At step 3 you must push and hold the battery release lock  
as you slide the lock in the direction indicated by the  
arrow.  
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1040 Keyboard Assembly  
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Attention  
Remove all power sources from the WorkPad z50 before  
removing the keyboard assembly.  
Turn the WorkPad z50 upside down.  
1.  
Step  
2
Size (Quantity) Color  
M2.5 (5) Black  
Torque  
3 kgcm  
Length  
6.0 mm  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
Turn the WorkPad z50 top side up and open the LCD  
3.  
panel.  
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1050 Bottom Cover  
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
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Attention!  
Attention  
Be careful when assembling the bottom cover and the  
battery shield not to pinch the cables.  
Step  
Size (Quantity)  
M2.5 (4)  
Color  
Black  
Silver  
Silver  
Black  
Torque  
3 kgcm  
3 kgcm  
3 kgcm  
3 kgcm  
Length  
6.0 mm  
4.0 mm  
5.0 mm  
8.0 mm  
3
4
5
6
M2.0 (2)  
Hex (2)  
M2.5 (2)  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
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1060 Mainboard  
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
Step  
6
Size (Quantity) Color  
Torque  
3 kgcm  
Length  
6.0 mm  
M2.0 (3)  
N/A  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
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1070 LCD Bezel  
Attention  
Be careful when lifting the bezel cover loose. The plastic  
tabs that hold it securely to the LCD unit are easily  
damaged.  
Remove the screw  
covers  
Step  
2
Size (Quantity) Color  
M2.5 (2) Black  
Torque  
3 kgcm  
Length  
4.0 mm  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
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1080 LCD Unit  
•
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
LCD Bezel (1070)  
TURN THE WORKPAD Z50 OVER.  
1.  
Remove the LCD unit.  
Step  
3
Size (Quantity) Color  
M2.5 (4) Black  
Torque  
3 kgcm  
Length  
4.0 mm  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
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1090 Inverter Card and LCD Panel  
•
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
LCD Bezel (1070)  
WorkPad z50 Mobile Companion  
45  
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Step  
Size (Quantity) Color  
Torque  
3 kgcm  
3 kgcm  
Length  
4.0 mm  
5.0 mm  
1
5
M2.5 (4)  
Hex (2)  
N/A  
N/A  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
1110 FPC Assembly  
•
•
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
LCD Bezel (1070)  
Inverter Card and LCD Panel (1090)  
46  
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1120 Speaker  
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
1130 Microphone  
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
WorkPad z50 Mobile Companion  
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1140 Audio Ports  
The ear jack and speaker out ports are all built into the  
mainboard. If any of these devices has malfunctioned, you  
must replace the mainboard.  
1150 PC Card Slot Assembly  
•
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
Mainboard (1060)  
Step  
1
Size (Quantity) Color  
Torque  
3 kgcm  
Length  
4.0 mm  
M2.0 (2)  
N/A  
48  
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Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
WorkPad z50 Mobile Companion  
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1160 RJ-11 Assembly  
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
50  
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1170 Hardware Button Board  
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
Step  
1
Size (Quantity) Color  
Torque  
3 kgcm  
Length  
6.0 mm  
M2.0 (1)  
N/A  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
WorkPad z50 Mobile Companion  
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1180 Top Cover  
•
•
•
•
•
•
•
•
•
•
•
Backup Batteries (1010)  
Battery Pack (1030)  
Keyboard Assembly (1040)  
Bottom Cover (1050)  
Mainboard (1060)  
LCD Bezel (1070)  
LCD Unit (1080)  
Microphone (1130)  
PC Card Slot Assembly (1150)  
RJ-11 Assembly (1160)  
Hardware Button Board (1170)  
Step  
1
Size (Quantity) Color  
Torque  
3 kgcm  
Length  
4.0 mm  
M2.5 (4)  
Black  
Note: Make sure you use the correct screw and tighten  
the screw to the torque specified.  
52  
IBM WorkPad z50, Mobile Companion 52  
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Locations  
Front Right View  
LCD cover release latch  
1.  
2.  
3.  
4.  
LCD display  
Brightness control buttons  
Contrast control buttons  
5. Notification button  
6. Notification LED  
Microphone button  
7.  
8. External Power/Charge status LED  
Power button  
9.  
TrackPoint  
10.  
11.  
12.  
13.  
TrackPoint buttons  
Keyboard  
Built-in microphone  
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Left View  
RJ-11 connector  
External earphone jack  
Microphone jack  
PC card eject button  
PC card slot  
1.  
2.  
3.  
4.  
5.  
Right View  
External monitor port  
CompactFlash slot  
CompactFlash eject button  
Infrared data port  
Serial port  
1.  
2.  
3.  
4.  
5.  
54  
IBM WorkPad z50, Mobile Companion 54  
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Rear View  
Power jack  
1.  
2.  
3.  
4.  
Battery release lock  
Battery release latch  
Lock keyhole  
Bottom View  
Backup battery compartment  
Built-in monophonic speaker  
OS ROM and DRAM compartment  
Reset switch hole  
1.  
2.  
3.  
4.  
5.  
6.  
Cradle connector  
Battery pack  
WorkPad z50 Mobile Companion  
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System Unit Parts Listing  
1
2
3
4
5
10  
6
7
8
9
11  
56  
IBM WorkPad z50, Mobile Companion 56  
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System Unit FRU List  
No.  
FRU PART DESCRIPTION  
POINTING STICK CAP  
K/B ASS’Y (USA)  
FRU ELEMENTS  
FRU P/N  
84G6536  
02K4862  
02K4867  
02K4865  
02K4863  
02K4864  
02K4866  
05K5936  
QTY  
1
CRU  
1
1
K/B ASS’Y (CAN-FRE)  
K/B ASS’Y (FRE)  
1
1
2
K/B ASS’Y (JAP)  
1
K/B ASS’Y (UK)  
1
K/B ASS’Y (GERMANY)  
TOP COVER ASS’Y  
1
1
TOP COVER  
1
LED LENS  
2
POWER BTN  
1
TOUCH BTN (R)  
TOUCH BTN (L)  
INDICATOR BTN  
BATTERY LATCH  
BATTERY SPRING  
INDICATOR SPRING  
TOP ESD MYLAR  
BATT-REL LATCH  
BATT-REL BRACKET  
CUSHION PLATE  
K/B SEAL SUPPORT  
1
1
2
1
1
2
3
1
1
1
1
1
K/B WATERPROOF  
TAPE  
4
EMI SPONGE  
(740031*5m/m)  
1
H/W BTN BOARD ASS’Y  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
MAIN BOARD ASS’Y  
MAIN BOARD ASS’Y-EU  
ROM CARD (USA)  
10L1217  
30L2168  
10L1218  
10L1256  
10L1258  
10L1257  
05K5938  
27L6431  
4
5
ROM CARD (JAP)  
ROM CARD (FRE)  
ROM CARD (GER)  
BOTTOMCOVERASS’Y U/C/J  
BOTTOMCOVERASS’YEMEA  
BOTTOM COVER  
SMART CARD DOOR  
BASE ESD MYLAR  
DOCKING SHUTTER (R)  
DOCKING SHUTTER (L)  
VGA DOOR-P  
SERIAL DOOR-P  
IR LENS  
6
BACKUP BATT TERMINAL  
RATING LABEL  
RUBBER FOOT  
BATTERY PACK  
02K6565  
02K6566  
05K5939  
7
8
BACKUP BATTERY  
BOTTOM DOOR GROUP  
1
1
1
1
1
EXTEND DOOR  
BACKUP BATTERY DOOR  
9
DUMMY PC CARD  
ASS’Y  
DUMMY CF CARD  
1
1
PC CARD SLOT ASS’Y  
SEE MISC PART GROUP 1  
05K5937  
10  
11  
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LCD Unit Parts List  
No.  
FRU PART DESCRIPTION  
LCD BEZEL ASS’Y  
FRU ELEMENTS  
FRU P/N  
05K5934  
QTY  
1
CRU  
LCD BEZEL  
1
1
2
LCD BUTTON  
SCREW CAP  
8.2" DSTN  
1
2
LCD MODULE ASS’Y  
INVERTER ASS’Y  
05K9399  
10L1216  
1
1
INV. MODULE (AMB)  
1
3
INVERTER MYLAR  
W/COPPER TAPE  
1
LCD COVER ASS’Y  
05K5933  
1
1
1
1
1
LCD COVER  
LCD SHIELD  
LCD SHIELD TAPE  
COVER LOGO  
(WORKPAD)  
4
HOOK KNOB  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
HOOK SPRING  
MAGNET (LCD COVER)  
LCD MAGNET HOLDER  
HINGE GROUP  
05K5935  
05K2822  
HINGE (R)  
HINGE (L)  
5
6
HINGE BRACKET (R)  
HINGE BRACKET (L)  
FPC AND WIRE GROUP  
LCD FPC ASS’Y  
FPC COVER SHEET  
FPC HOLDER (U)  
FPC HOLDER (L)  
CABLE ASS’Y, IV, 8.2  
58 IBM WorkPad z50, Mobile Companion (2608-1Ax)  
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Miscellaneous and Other Parts  
DESCRIPTION  
FRU ELEMENTS  
QTY  
FRU P/N  
05K5940  
CRU  
MISC PART GROUP 1  
1
1
HOOK KNOB  
HOOK SPRING  
1
1
1
2
1
1
1
1
1
1
1
IR LENS  
DOCKING SHUTTER  
RUBBER FOOT  
COVER SWITCH/B ASS’Y  
H/W BTN BOARD ASS’Y  
CABLE ASS’Y, MIC  
CABLE ASS’Y, RJ-11  
RJ-11 DOOR (EMEA ONLY)  
BATT SLOT BRACKET  
LABEL CAN HOMO,  
(US/CA/JA ONLY)  
SPEAKER BRACKET  
1
SPEAKER MYLAR  
CABLE ASS’Y, SP  
TAPE  
1
1
3
MISC PART GROUP 2  
SCREW KIT  
1
46L2666  
05K5941  
TEMPLATE, TEXT  
TEMPLATE, ICON  
STICKER  
1
Ö
1
1
1
SCREW (M2.0*3-P-NI-NYLOK)  
SCREW (M2.0*6-P-NI-NYLOK  
SCREW (M2.5*6-I-BNI-NYLOK)  
SCREW (M2.5*8-1-BNI-NI-NYLOK)  
SCREW (M2.5*4-P-BNI-NYLOK)  
STUD  
10  
10  
20  
10  
20  
10  
10  
10  
I/V NUT  
SCREW CAP  
Option Parts FRU List  
ITEM  
DESCRIPTION  
QTY  
1
FRU P/N  
20L0244  
CRU  
Ö
MEMORY EXPANSION  
32MB  
HIGH CAPACITY BATTERY PACK  
DRY CELL BATTERY CASE  
CRADLE  
1
1
1
02K6575  
02K6142  
02K6143  
Ö
Ö
Ö
Other Parts  
ITEM  
DESCRIPTION  
QTY  
1
FRU P/N  
05K2823  
CRU  
Ö
SERIAL CABLE  
MODEM CABLE  
1
1
1
05K2824  
02K6560  
02K6562  
Ö
AC ADAPTOR (45w, 2-prong)  
AC ADAPTOR (45w, 3-prong)  
Ö
Ö
CRU  
To find out which parts can be replaced by the customer, refer to the  
tables under “System Unit Parts Listing” starting on page 52. All parts  
marked “Ö” in the CRU column are considered CRU parts.  
Tools  
See the table of tools on page 26.  
WorkPad z50 Mobile Companion (2608-1Ax) 59  
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Power Cord  
IBM power cords for a specific country are usually available  
only in that country:  
For 2-pin power cords:  
Used in These Countries  
CRU  
IBM  
Power  
Cord  
Part  
Number  
13H5273  
Japan  
√
For 3-pin power cords:  
IBM  
Used in These Countries  
CRU  
Power  
Cord  
Part  
Number  
76H3514  
76H3516  
Argentina, Australia, Papua New Guinea,  
New Zealand, Paraguay, Uruguay  
√
√
Bahamas, Barbados, Bermuda, Bolivia,  
Canada, Cayman Islands, Colombia, Costa  
Rica, Dominican Republic, Ecuador, El  
Salvador, Guatemala, Guyana, Haiti,  
Honduras, Jamaica, Mexico, Netherlands  
Antilles, Nicaragua, Panama, Peru,  
Philippines, Saudi Arabia, Suriname,  
Taiwan, Trinidad (West Indies), United  
States of America, Venezuela  
76H3518  
Austria, Belgium, Bulgaria, Czech Republic,  
Egypt, Finland, France, Germany, Greece,  
Hungary, Iceland, Indonesia, Netherlands,  
Norway, Poland, Portugal, Romania,  
Slovakia, Spain, Sweden, Turkey, former  
Yugoslavia  
√
76H3520  
76H3522  
Denmark  
√
√
Bangladesh, Pakistan, South Africa, Sri  
Lanka  
76H3524  
Abu Dhabi, Albania, Antigua, Bahrain,  
Brunei, Dubai, Fiji, India, Ireland, Kenya,  
Kuwait, Macao, Malaysia, Nigeria, Oman,  
People’s Republic of China (including Hong  
Kong), Qatar, Singapore, United Kingdom  
√
76H3528  
76H3530  
76H3532  
76H3535  
76H4866  
Liechtenstein, Switzerland  
√
√
√
√
√
Chile, Ethiopia, Italy, Libya  
Israel  
Korea  
Thailand  
60  
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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 that IBM product,  
program, or service may be used. Any functionally  
equivalent product, program, or service that does not infringe  
any of the intellectual property rights of IBM 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 of the IBM Corporation  
in the United States or other countries or both:  
IBM  
WorkPad  
TrackPoint  
Microsoft and Windows are trademarks or registered  
trademarks of Microsoft Corporation.  
CompactFlash is the registered trademark of Sandisk  
Corporation.  
Other company, product, and service names, which may be  
denoted by a double asterisk (**), may be trademarks or  
service marks of others.  
WorkPad z50 Mobile Companion  
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