S37L-2095-00
IBM Mobile Systems
WorkPad z50 Mobile Companion (2608-1Ax)
Hardware Maintenance Manual
March 1999
© Copyright IBM Corp. 1999 iii
Note
Befor e usi ng th is informati on and the produc t it s up p or ts ,
be sure to r ead th e g eneral inf or m ati on 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 d o not all ow dis c l aimer or express or implied
warranties in certain transactions; therefore, this statement
may not apply to you.
This publ ication c oul d inc lude tec hn ical inacc ur aci es 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
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construed to mean that IBM intends to announce such IBM
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should b e m ad e t o your IB M aut h o ri z ed d ealer or your IB M
marketing representative.
© Copyright Inter n atio nal Busin es s Mach ine s
Corporation 1999. All rights reserved. Note to US
Government Users – Documentation related to restricted
rights – Use, duplication, or dis c l os ure is subject to
restrictions set forth in GSA ADP Schedule Contract with
IBM Corp.
iv IBM Wor kPad z50, Mobile Companion iv
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,
refer ence, and produc t -specif ic par ts inform ati on.
Importa nt
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 “ S afety Informati on” on pag e xii.
© Copyright IBM Corp. 1999 v
Contents
Introduction .........................................................................vii
I
MPORTANT SERVICE INFORMATION VII
FRU Replacement Strategy.......................................................vii
S
AFETY 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 R e quirements.........................................................xvi
W
ORKPAD Z50 MOBILE COMPANION (2608) 1
R
EAD THIS FIRST 1
S
CREW TIGHTENING INFORMATION 2
P
RODUCT OVERVIEW 5
C
HECKOUT GUIDE 6
Audio Checkout............................................................................7
Keyboard Checko ut.....................................................................8
Memory Checkout........................................................................8
Modem Checkout .........................................................................9
Power Systems Checkout.............................................................9
Backup Battery Checkout ( N onr echar geable).........................13
The Battery Calibration Application ........................................13
ROM Card Checkout .................................................................14
TrackPoin t Ch e c k o u t .................................................................15
Cradle Checkout ........................................................................15
External Monitor Self-Test ........................................................15
I
NSTALLING THE ROM/DRAM CARD 17
Removing the ROM/DRAM Card..............................................18
Brightness/Contrast Buttons Checkout ....................................19
P
OWER MANAGEMENT FEATURES 20
Full Power Mod e .......................................................................2 0
Suspend Mode ............................................................................20
S
YMPTOM-TO-FRU INDEX 21
Numeric Error Codes ................................................................21
Function-Related Symptoms......................................................23
Indicator-Related Symptoms.....................................................23
Infrared-Related Symptoms.......................................................23
Keyboard- or TrackPoi nt-Related Symptoms..........................24
LCD-Related Symptoms.............................................................24
Peripheral Device Related Symptoms ......................................25
Power-Related Symptoms..........................................................25
Other Symptoms.........................................................................25
Intermitte n t Prob l em s ................................................................26
Undetermined Problems............................................................26
R
UNNING THE DIAGNOSTICS 27
PC Card Slot Test ......................................................................27
UUID ..........................................................................................28
R
ELATED SERVICE PROCEDURES 28
Status Indicators and Control Buttons .....................................28
Application Launching Key Assignm ents.................................29
R
EMOVI NG AND REPLACING DEFECTIVE FRUS 30
Important Notice........................................................................32
Removal reference .....................................................................34
1010 Backup Batteries..............................................................35
1020 ROM/D RA M Card...........................................................36
1030 Battery Pack.....................................................................38
vi IBM WorkPad z50, Mobile Companion vi
1040 Keyboard Ass e m bly.........................................................39
1050 Bottom Cover...................................................................40
1060 Mainboar d.......................................................................42
1070 LCD Bez el........................................................................43
1080 LCD Unit..........................................................................44
1090 Inverter Card and LCD Panel........................................45
1110 FPC As s embly..................................................................46
1120 Speaker.............................................................................47
1130 Micropho ne......................................................................47
1140 Audio P or ts......................................................................48
1150 PC Car d Slot Assembly...................................................48
1160 RJ-11 Assembly ...............................................................50
1170 Hardware Button Board.................................................51
1180 Top Cover........................................................................52
L
OCATIONS 53
Front Right View ........................................................................ 5 3
Left View.....................................................................................5 4
Right View ..................................................................................54
Rear View...................................................................................55
Bottom View ...............................................................................55
P
ARTS LISTING 56
System Unit FRU List ................................................................57
LCD Unit Parts Lis t...................................................................58
Miscellaneous and Other Parts.................................................59
Option Parts FRU List...............................................................59
Other Parts .................................................................................59
CRU ............................................................................................59
Tools ...........................................................................................59
Power Cord ................................................................................60
N
OTICES 61
Trademarks ................................................................................61
© Copyright IBM Corp. 1998 vii
Introduction
Important Service Information
Important
Software fixes ar e cus t om er ins t al lable. Such f i xes are
located on th e PC C om p an y B ul l et in Board Ser vice
(BBS). The direct line for modem connection is 919-55 70001 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
obtaini ng or ins t al li ng software fixes.
Customers in Canada should call IBM HelpPC at 800-5653344 for assistance or down-load information. The Ca nadian
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 t h at all s oftware f i xes ar e i ns t all ed pr i or t o
replacing any FRUs listed in this manual.
Use the follow ing strategy to preve nt unnecessary FR U
replac em ent and ser vice expense:
•
If you are instructed to replace a FRU and that
does not correct the problem, reinstall the
original FRU before you continue.
•
Some compu t ers have bot h a proc es sor board and a
mainb oard . If you are instruc t ed t o rep lace either the
processor board or the mainboard, and the first board
that you replaced does not correct the problem,
reinst all t h e original board, and then repl ac e th e ot h er
(processor or s ystem) boar d.
•
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.
viii IBM Wor kPad z50, Mobile Companion viii
Safety Notices (Multi-lingual Translations)
In this manual, safety notices appear in English with a page
number r ef erence t o the ap propriat e multi-li ng ual, trans l at ed
safety notice found in this section.
The follow i ng s afety notices are provided in En gl is h, F r enc h,
German, Italian, and Spanish languages.
Safety Notice 1
Befor e the c om put er is pow er ed-on aft er FRU
replacement, make sure all screws, springs, or other
small p arts are in place and are not left loos e insi d e th e
computer. Verify this by shaking the computer and
listeni ng for rat tl in g s ounds. Metallic par ts or metal flak es
can cause electrical shorts.
Avant de remettre l'ordinateur sous tension après
remplacement d' un e unité en cl i ent èl e, vér ifiez qu e 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 nac h einem FRU- A us t aus c h d er C om put er w i eder
ange schlossen wird, muß sicherge stellt werden, daß
keine Schrauben, Federn oder andere Kleinteile fehlen
oder im Gehäuse vergessen wurden. Der Computer muß
geschüt t elt und auf kl ap p er g eräus che gepr üf t wer d en .
Metallteile oder splitter können Kurzschlüsse erzeugen.
Prima di accendere l'elab or atore dop o ch e è stata
effe ttuata la sostituzione di una FRU, accertarsi che tut te
le viti, le molle e tune le altri parti di piccole dimensioni
siano nella corretta posizione e non siano sparse
all'intern o dell'elaboratore. Verificare ciò scuotendo
l'elab oratore e pres tando att en zione ad eventual i rum or i ;
eventuali parti o pezzetti metallici possono provocare
cortocircuiti pericolosi.
Antes de encender el sis tema despues de sus tituir un a
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
agitand o el sis t em a y es cuchan do los posibles ruid os qu e
provoc arían. Las piez as m et álicas pued en causar
cort ocirc uitos eléc t ricos.
© Copyright IBM Corp. 1998 ix
Safety Notice 2
The battery pack contains small amounts of harmful
substances. Do not disassemble it, throw it into fire or
water, or short-circu it it. Dispos e of the battery as
required by local o rdinances or regulations. Use only the
batter y in th e ap propriat e par ts lis ting when r epl ac in g the
batter y p ac k. Use of an incorr ect batter y can result in
igniti on or exp l os ion of the battery.
La bat terie contient du nicke l. Ne la démontez pas, ne
l'exposez ni au feu ni á l'eau. Ne la mettez pas en courtcircuit. P our l a met tr e au rebut, c onformez - 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 ent h alten geri ng e M engen von Nick el . Sie durfen
nicht zerl eg t , wiederauf geladen, kurzg es c hl ossen, oder
Feuer oder Wasser ausgesetzt werden. Bei der
Entsorgung die örtlichen Bestimmungen für Sondermüll
beachten. Beim Ersetzen der Batterie nur Batterien des
Typs ver w end en , der in der Ers at zteillis t e auf geführt ist.
Der Eins atz falscher B atterien k ann zu Entzünd un g od er
Explosion führen.
La batter i a c onti ene picc ole quantit à di nic h el. Non
smontarla, gettarla nel fuoco o nell'acqua né
cortocircuitarla. Smaltirla secondo la normativa in vigore
(DPR 915/82, successive dispos izioni e disposizioni
locali). Quando Si sostituisce la batteria, utilizzare
soltanto i tipi inseriti nell'appropriato Catalogo parti.
L'impi eg o di un a batteri a non adatta p otrebbe
determi nare l'incendio o l' es pl os ione della batteria stess a.
Las baterías contienen pequeñas cantidades de níquel.
No las desmonte, ni recargue , ni las eche al fue go o al
agua ni las cortocircuite. Deséchelas tal como dispone la
normativa local. Utilice sólo ba terías que se en c uentren
en la lista de piezas al sustituir la batería. La utilización
de una bat erí a n o apropiad a pu ed e provocar la ig nic i ón o
explosión de la misma.
x IBM WorkPad z50, Mobile Companion x
Safety Notice 3
If the LCD br eaks and the fluid from ins i d e th e LCD g ets
into your ey es or on you r hands, i mm ed i at ely wash the
affect ed ar e as wi t h w at er f or at leas t 15 mi nutes. Seek
medica l c are if any symptoms fr om t h e fluid are pres ent
after washing.
Si le panneau d'aftic h ag e à cristaux li qu id es s e brise et
que vous rec ev ez dans les yeux ou sur l es m ai ns u n e
partie du fluide, rincez-les abondamment pendant au
moins quinze minutes. Consultez un médecin si des
symptômes persistent apres le lavage.
Die Leuchts toffröhre im LCD ~BiIdschirm ent h ält
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
anschl i eß end ein Arzt auf g esucht wer d en .
Nel caso che caso l'LCD si do vesse rompere ed ii liquido
in esso contenut o entrasse in c ontatto c on gli occhi o le
mani, lav ar e im m ediatam en t e le par ti interessate con
acqua corr ente per al m en o 1 5 mi nut i; poi consul tare un
medico se i sintomi dovessero permanere.
Si la LCD se r omp e y el fluido d e su int er i or 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
síntom a 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'évi ter tout risque de choc électrique, ne retirez pas
le cache en plastique protegéant la partie inférieure de la
carte d'al im entati on.
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 qui te la cubierta de plástico
que rodea la parte baja de la tarjeta invertida.
© Copyright IBM Corp. 1998 xi
Safety Notice 5
Though m ai n batteries ha ve l ow vol tage, a sh orted or
ground ed battery c an produce enough cur r ent t o bur n
combust i bl e m aterials or per sonnel.
Bien que le voltage des batteries principale s so it peu
élevé, l e court-circ ui t ou l a mise à la masse d'une batt erie
peut produire suf f is am ment de cour an t pour brûler d es
matériaux combustib l es ou c aus er d es br û lures
corporelles gr av es .
Obwohl H au pt b at t er i en ei n e niedrige Sp annung hab en,
können si e doc h b ei Ku rzs c h luß oder Er du ng g en ug
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 ci rcuito o a massa può
fornire corrente sufficiente da bruciare materiali
combust i bi li 0 provocare ustion i al t ecnici di
manut enz i on e.
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 com puter,
unplug all power cords from electrical outlets, remove the
batter y p ac k, th en dis connec t any interconnect in g cables.
Avant de r etirer une uni t é r emp l aç able en clièntele,
mettez le système hor s tensio n, débranchez tous les
cordons d'alimentation des socles de prise de courant,
retirez la batterie et déconnectez tous le s cordons
d'interface.
Die St romzufuhr muß abgeschaltet, alle Stromkabel aus
der Steckdose gezogen, der Akku entfernt und alle
Verbindungskabel abge nommen sein, bevor eine F RU
entfernt wir d .
Prima di rimuovere qualsiasi FRU, spegnere il sistema,
scollegare dall e pr ese elettric he tutti i c avi di
alime ntazione, rimuo vere 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 baterí a y, a c ont in uación, des conect e cu alq uier cabl e
de conexi ón entre disp os it i vos .
xii IBM WorkPad z50, Mobile Companion xii
Safety I n fo rmation
The following section contains the safety information that
you need t o be famili ar wit h before s er vic i ng an IB M m ob il e
comput er.
General Safety
Follow these rules to ensure general safety:
•
Observe good housekeeping in the area of the
machines durin g and after maint en ance.
•
When lifti ng an y h ea vy objec t:
1. Ensure you can stand safely without slipping.
2. Distribut e the weight of t h e obj ec t eq u all y
between you r f eet.
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
cust omer, or th at m ak es t h e equi p m ent unsafe.
•
Before you st art th e m ac hi n e, ens ur e t h at oth er
servic e represen t atives and the custom er ’s personnel
are not in a haz ar d ous pos ition.
•
Place remov ed c over s an d other parts in a safe
place, away from al l 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 roll ed 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 f or you r cl othing.
Attention: Metal obj ec ts ar e go od el ec t rical
conductors.
•
Wear safet y gl asses when you are: hamm er ing,
drilling, soldering, cutting wire, attaching springs,
using solvents, or working in any other conditions that
might be h az ar d ous to your eyes .
•
After service, reinstall all safety shields, guards,
labels, and ground wir es . Replace any safety devi ce
that is worn or defective.
•
Reinstall all covers correctly before returning the
machine to the customer.
© Copyright IBM Corp. 1998 xiii
Electrical Safety
Obser ve th e f ollow i ng rules wh en w orking on el ectrical
equipm en t.
Importa nt
Use only ap proved tool s and t est equ ip m ent. Some han d
tools hav e h and l es c ov ered with a soft m at er i al that does
not insulate you when working with live electrical currents.
Many customers hav e, near th eir equip m ent, ru bb er f l oor
mats that contain small conductive fibers to decrease
electrostatic discharges. Do not use this type of mat to
protect you rself from electrical shoc k.
•
Find the room emergency power-off (EPO) switch,
disconnectin g s witch, or elect r ical outl et. If an
electrical acci d ent occurs, you c an th en operate th e
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:
- Perf ormin g a m ec hanical ins pecti on
- Working near power supplies
- Removi ng or ins t all i n g m ain units
•
Before you start to work on the machine, unplug the
power cord. If you cannot unplug it, ask the customer
to pow er-off the wall box that su pplies power to the
machine and to lock the wall box in th e off position.
•
If you need to wor k on a m ach ine that h as
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 han d w h en w ork ing with
powered-on electrical equipment; keep the
other hand in your poc k et or behind your bac k.
Attention: There mus t be a comp l ete cir cuit
to cause electrical shock. By observing the
above rule, you may prevent a current from
passi ng through your body.
- When using testers, set the controls correctly
and use the approved probe leads and
acce ssories for that tester.
- Stand on suitable rubber mats (obtained
locally, if necessary) to insulate you from
grounds suc h as m etal floor strips and
machine frames.
Obser ve th e sp ec i al s afety prec autions wh en y ou
work with very high vol t ages; thes e ins tructions are in
the saf ety s ections of mainten ance inform ation. Use
extrem e c ar e wh en me as ur i ng hi g h vol tages.
xiv IBM WorkPad z50, Mobile Companion xiv
•
Regularly inspect and maintain your electrical hand
tools for s afe operati onal condition.
•
Do not use worn or broken tools and testers.
•
Never assume
that p ow er has been disconnec ted
from a circuit. First,
check
that it has been powered-
off.
•
Always look carefully for possible hazards in your
work area. Exam ples of th es e haz ards are m ois t
floors, nongrounded power extension cables, power
surges, and m is s ing safet y grou nds.
•
Do not touch li ve el ec tr ical circ uits w it h the reflect ive
surfac e of a plas t ic d ent al mirror. The surfac e is
conductive; such touching can cause personal injury
and machine damage.
•
Do not service the following parts
with the power on
when they are remov ed f rom their norm al operatin g
pla ces in a mach ine:
- 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 ins p ect i on guide is to assis t you in
identifying potentially unsafe conditions on these products.
Each mac hi n e, as it w as des igned and built, had r equ ir ed
safety items installed to protect users and service personnel
from injury. This guide addresses only those items.
However , g ood ju dg m ent shoul d b e us ed to id entif y poten tial
safety h az ar ds du e t o att ac hment of n on- IBM featu res 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
voltag e on the frame c an c ause serious or fatal
electrical shock)
•
Explosive hazards, such as a damaged CRT face or
bulging capacitor
•
Mecha nical hazards, such as loose or missing
hardware
© Copyright IBM Corp. 1998 xv
The guid e cons is ts of a s eries of steps present ed 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 ed ges).
2. Power-off the computer. Disconnect the power
cord.
3. Check the power cord for:
a. A third-wire ground connector in good
conditi on . Us e a met er to m eas ure third-wire
ground c ontinuit y f or 0. 1 ohm or less b et w een
the external grou nd pi n and fram e ground.
b. The power cord should be the appropriate type
as specifi ed in th e p arts lis t in gs .
c. Insul at ion must n ot b e fr ayed or worn .
4. Remove the cover.
5. Check for any obvi ous non-IBM alterations. Use
good judg m en t as to t h e s af et y of an y n on- IBM
alterations.
6. Check inside the unit for any obvious unsafe
conditi ons , suc h as metal filin gs , c ontamination, water
or other liq ui ds , or si gns of f ir e or sm ok e d am ag e.
7. Check for worn, fraye d, or pinched cables.
8. Check that the power-supply cover fasteners ( screws
or rivets) have not been removed or tampered with.
xvi IBM WorkPad z50, Mobile Companion xvi
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 char g e b etw een objects. Protect agai ns t E SD
damage by equalizing the charge so tha t the machine, the
part, th e wor k m at, an d t h e person handling th e part ar e all
at the same charge.
Notes
1. Use product-specific ESD procedures when they
exceed th e req ui rements noted her e.
2. Make sure that the ESD protective devices you
use have been certified (ISO 9000) as fully
effective.
When hand li ng ESD-s ens it ive parts :
•
Keep the parts in protective packages until they are
inserted into the product.
•
Avoid contact with other people.
•
Wear a ground ed wris t strap agains t your skin t o
eliminate static on your body. Approved static straps
protect t h e us er f r om hig h-oper at in g vol tages (1 10V ) .
•
Prevent the part from touching your clothing. Most
clothing is insulative and retains a charge even when
you are we ari ng a wrist str ap.
•
Use the black side of a grounded w or k m at to provid e
a static-free work surface. The mat is especially
useful when handling ESD-sensit i ve devices. S el ect
a groundi ng s ys tem, suc h as th os e lis ted below , t o
provid e pr ot ection th at m eets t h e sp ecif ic service
requir em en t.
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 br aid, or green-wir e ground.
- Use an ESD common ground or reference
point wh en working on a dou bl e- i ns ul ated or
batter y- op erated s yst em . You c an us e c oax or
connector-out s id e sh el ls on t h es e s yst ems .
- Use the round ground-prong of the AC plug on
AC-ope rated computers.
Grounding Requirements
Electrical grounding of the computer is required for operator
safety and correct system function. Proper grounding of the
electrical outl et c an be verifi ed by a c ertified el ectr ic ian.
W orkP ad z50 M ob il e C om p ani on 1
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 compu ter .
•
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 mach in e and FRU p art nu m b er ar e c orr ec t
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 reas ons that have
nothing to do with a hardware problem, such as
cosmic radiation, electrostatic discharge, or
software errors. FRU replacement should be
considered onl y wh en a recur r in g problem exis ts .
If this is suspected, clear the log error and run the
test agai n. Do n ot r epl ace any FRUs if log errors
do not appear.
•
Be careful not to replace a nondefective FRU.
2 IBM WorkPad z50, Mobile Companion 2
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 addition al 90 de g re es af t er th e sc rew head
touches the surface of the plastic part.
90 Degrees More
Plastic
Logic card to Plastic
Turn an addition al 180 degrees after the screw head
tou ches t he s urface of the logic card .
180 Degrees More
Plastic
Logic Card
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 Multipl e 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.
W orkP ad z50 M ob il e C om p ani on 3
Attention
Pushing the WorkPad z50’s Power but ton will power on
(or resume) the system, or put the system in suspend
mode: there is no powe r-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 t o retai n m emory while
these power sources are removed.
What to Do First: The service personnel must fill in the
following information in the par ts exchange form or parts
return form that is attached to the returned FRU:
__ 1 Name and phone number of service pers onnel
__ 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 t he f ailing F R U
was detected
__ 7 Failing FRU name and part number
__ 8 Machine type, model number, and s erial num ber
__ 9 Customer’s name and address
Befor e ch ec kin g pr oblems wit h t h e c omp uter, det er mi ne
whether the damage is covered under the warranty by
referring to the following:
During th e w arranty p er i od, t h e cus t omer may b e
responsible for repair cost s if the computer damage was
caused by misus e, acc ident, m odif ication, unsuitab l e
physic al or op er ati n g environ m ent, or improp er m ai ntenance
by the customer. The following list provides some common
items th at are n ot c over ed under w arranty an d s om e
symptoms that may indicate that the system was subjected
to stress beyond normal use:
The following is not covered under warranty:
•
LCD pa nel 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 ins tallati on of an incomp atible card
•
Fuses blown b y attachment of a nons up p or t ed
device
4 IBM WorkPad z50, Mobile Companion 4
The f ollowing symptoms m ight 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 th an th e op erating s yst em wi ll be erased.
Any password that is set for testing purposes should be
disabl ed b ef or e returnin g the WorkP ad z50 to the
customer.
W orkP ad z50 M ob il e C om p ani on 5
Product Overview
Refer to th e f oll ow i ng t abl e for an overview of the s ystem
features of the WorkPad z50 Mobile Companion:
Feature Description
Processor NEC VR4121
Chipset NEC VRC4171A
Graphic/Video
Controller
ITE IT8181
OS/APP ROM 20MB (32MB Japan)
Memory 16MB Upgradable to 48MB
Stora ge Memory CompactFlash Type II socket
PC Card One type III slot
I/O Ports RJ-11 Modem port (US/Canada/
Japan m od els onl y)
Infrared
Serial port
Extern al dis pl ay port
Cradle connector
Audio External earphone jack
External microphone jack
Internal speaker
Built-in microphone
Pointing Device TrackPoint III
AC Adapter 45watt type
Internal Modem Onl y av ail ab le for US/C an ad a/Japan
models
Battery Pack 16. 65watt
Backup Battery Size AAA x 2
LCD Display 8.2" (inch) DSTN
6 IBM WorkPad z50, Mobile Companion 6
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 runnin g th e diagnostic test (refer to
“Running the Diagnostics
Test” on page 27) or by
repeating the same operati on .
Note
To run the diagnostics test, refer to “Running the
Diagnos t ic s ” on pag e 27.
If the sympt oms are intermitten t an d c ann ot b e re-c r eated
(and therefore not verified), go to “Symptom-to-FRU
Index” on page 21 an d th en go to “Inter mi t t ent P r oblems”
on page 26.
3. Use the following table with the verified symptom to
determine which page to go to. Search the
symptoms colum n, an d fin d t h e desc ri ption th at bes t
matches your sy mptom; then go to the page sho wn in
the “Refer To” column.
Symptoms (Verified) Refer To
Power failure: The
power indicators (AC
Adapter LED or P ower
on/Battery status LE D)
are not lit.
“Power Systems Checkout”
on page 9.
Audio is not properly
functioning.
“Audio Ch ec k out” on pag e 7.
Keyboard does not work
properly.
“Keyboard Checkout” on
page 8.
Internal fax/modem does
not work.
“Modem Checkout” on page 9.
Suspect mainboard or
ROM card problems .
“ROM Card Checkout” on
page 14.
TrackPoint prob l ems . “T r ack P oint Check out ” on
page 15.
Cradle does not
communicate pr op er l y.
“Cradle Checkout” on page
15.
Exte rnal monitor does
not display.
“External Mo nitor Self-Test”
on page 15.
The diagnostic test
detect ed an er r or an d
displ ayed an error cod e.
“Running the Diagnostics
Test ” on page 27.
W orkP ad z50 M ob il e C om p ani on 7
Symptoms (Verified) Refer To
Other symptoms (such
as LCD display
problems).
“Symp t om- to-FRU Index” on
page 21.
PC cards do not work.
“PC Card Slo ts 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 r u n the diagn ost ic test .
3. If the test d et ects an au dio probl em , do the foll ow in g:
Click Start, Programs, WorkPad, and then Rapid
Access. Check that “Mute” is not enabled in the
Rapid Ac c ess ut i lit y. Clic k t h e “V ol um e & S oun ds ”
icon in the Control Panel, adjust the volume to mid
position and click any sound: if no sound is heard, do
the follow i ng on e at a ti m e:
• 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 s oun d.
2. If no sound is heard, do the following one at a time:
• Reseat the microphone cable
• Replace the microphone cable
• Replace the mainboard
8 IBM WorkPad z50, Mobile Companion 8
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
Diagnos t ic s Test” on pag e 27).
2. Select Keyboard and run the diagnostic test. A
layout of t h e k eyb oard app ears on t h e sc r een.
3. Check that when each key is pr essed, the k ey’s
positi on on th e k eyboard l ay out on the scr een
changes to a blue square.
4. Press OK to end the tes t.
If the tests detect a k eyb oard probl em , d o th e f oll ow in g one
at a time to correct the problem. Do not replace a
no n defec tive FRU:
•
Reseat the keyboard cable.
•
Replace the keyboard .
•
Replace the mainboard.
Memory Checkout
The WorkPad z50 M obi le Compan ion 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 th e f oll ow i ng t o is olate memory probl ems :
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 sour ce and turn on t h e
W orkP ad 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 sour ce, then tur n on the
W orkP ad z50.
6. If an error appears during POST, replace the DRAM
card.
W orkP ad z50 M ob il e C om p ani on 9
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 S es si on Prop ertie s
window.
2. Click “Configure…”. In the Device Properti e s
window check the “Manual Dial” box.
3. Issue the ATA command.
4. If there is no sound, re place 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”.
Exte rnal Power/Charge Status LE D indicates the following
status:
LED AC Adapter Battery Pack
Charge
Status
Amber Connected
Li-ion (standard or highcapacity battery)
Not full
Green Connected Li-ion (standard or high-
capacity battery)
Full
Green Connected Dry cell battery is
connected or
no battery is connected
—
Not lit
Not
connected
——
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