IBM A 6646, A 6644, A 6645 User Manual

Hardware Maintenance Service
for Service Level A

Machine Types 6644, 6645 and 6646

6644/6645/6646

First Edition (May, 2000)

The following paragraph does not apply to any state
or country where such provisions are inconsistent
with local law: INTERNATIONAL BUSINESS
MACHINES CORPORATION PROVIDES THIS
PUBLICATION “AS IS” WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY OR
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References to IBM products, programs, or services
do not imply that IBM intends to make them available
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include technical inaccuracies or typographical
errors. Changes are periodically made to the
information herein; these changes will be made in
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© Copyright International Business Machines
Corporation 2000.
All rights reserved.

Note to U.S. 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.

Contents

Contents .............................................................. III

Notices ................................................................VII

Safety Information ...............................................VIII

Laser Compliance Statement ............................ XXX

Trademarks ......................................................XXXI

Preface ............................................................XXXII

General Information ............................................. 1

Introduction ............................................................ 2

Product Overview ...................................................3

Processors (Machine Type 6644) .................... 3

Processors (Machine Type 6645/6646) ...........3

Memory ............................................................ 3

External Ports................................................... 4

Hard Disk Drive ................................................ 4

CD-ROM Drive ................................................. 4

Multimedia........................................................ 4

Video ................................................................ 4

Power Management......................................... 5

Power Supply...................................................5

Internal Cabling ................................................ 5

Keyboard..........................................................5

Mouse .............................................................. 5

Hardware Interfaces ............................................... 6

CMOS Reset .......................................................... 7

Power-On Password .............................................. 8

Flash (BIOS) Update Procedure ............................ 9

BIOS-contained Model Number and

Serial Number ...................................................... 10

BIOS Configuration/Setup Utility .......................... 12

Working with the Setup Menus ...................... 12

Viewing System Information, and

Product Data ..................................................15

Devices and I/O ports..................................... 16

Startup Options .............................................. 19

Date and Time................................................21

System Secruity ............................................. 21

Advanced Setup ............................................. 24

Power Management....................................... 25

Specifications ....................................................... 27

Dimension (width x depth x height)................ 27

Weight ............................................................ 27

Environment ................................................... 27

Electrical input................................................ 27

Operating Requirements ...................................... 28

Check Procedures ............................................. 29

Introduction .......................................................... 30

Start ..................................................................... 31

Index of Symptoms, Messages, Error Codes,

or Beeps ...............................................................36

Troubleshooting ...................................................55

Factory-Installed Storage Devices ................. 55

Audio (Not Supported by Diagnostics Program) .. 59

CD-ROM Drive ..................................................... 62

Memory ................................................................ 64

Keyboard ..............................................................65

Mouse .................................................................. 66

Power Supply .......................................................68

Monitor ................................................................. 70

Undetermined Problems ......................................72

Diagnostic Aids ..................................................75

Introduction .......................................................... 76

Power-On Self Test .............................................. 77

Diagnostic CD ...................................................... 79

Using the Diagnostic CD ................................ 79

Using Diagnostic Program from

Recovery CD .................................................. 80

Diagnostics Program Features....................... 81

Repair Information ............................................. 83

Removals and Replacements .............................. 84

Cover.............................................................. 85

Processor and Fansink .................................. 86

Memory (DIMM) ............................................. 89

Adapter Card .................................................. 90

Internal Speaker............................................. 91

USB Port ........................................................ 92

CD-ROM Drive ............................................... 93

Hard Disk Drive .............................................. 95

Power Supply.................................................97

Power Button/Indicator LED and Cable ......... 98

System Board................................................. 99

System Backup Battery ................................ 100

Handling ESD-Sensitive Parts ........................... 101

Software Recovery Procedure ........................... 102

Parts/Test Point Locations .............................. 103

Introduction ........................................................ 104

System Board Jumpers and Connectors ...........105

Power Supply Connectors and Voltages ...........107

Network Cards ................................................... 109

3.5-In. Hard Disk Drive Jumper Settings ............ 110

CD-ROM Drive ................................................... 113

CD-ROM Drive Rear Panel Connectors and

Jumpers ....................................................... 115

DIMM Configurations ......................................... 116

System Board Connector Pin Signals ................117

Monitor Port Signals.....................................117

IDE Cable Connector Signals ......................117

Safety Inspection Guide .................................. 119

General Guidelines ............................................ 120

Parts Catalog .................................................... 121

Abbreviations ..................................................... 122

System Assembly .............................................. 123

Assembly 1a: System Unit- Interior.............. 123

Assembly 1b: System Unit - Exterior............ 126

Assembly 2: Hard Drive ............................... 127

Assembly 3: CD-ROM Drive ........................ 128

Assembly 4: Power Cord.............................. 129

Assembly 5: Keyboard and Mouse .............. 131

Appendix A. FRU Number List ........................ 133

Index .................................................................. 137

Notices

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

IBM may have patents or pending patent applications
covering subject matter in this document. The
featuring of these patents, pending or otherwise, in
this document does not give you any license to these
patents. You can send license inquires, in writing, to
the IBM director of Commercial Relations, IBM
Corporation, Purchase, NY10577.

Voltage Supply Switch Settings

Your IBM Personal Computer might have voltage
switches, which must be set correctly for your voltage
supply. If your monitor or system unit has a voltage
switch, complete these steps to make sure each
switch is set correctly:

1. Determine the correct voltage switch setting for

your area:

Voltage Supply Range Voltage Switch Setting

100-127 V 115 V
200-240 V 230 V

2. Locate the voltage switch on the back of your

monitor or system unit. If the setting shown on the
switch is:

•

Correct: start setting up your IBM computer.

•

Incorrect: change the voltage switch setting.

Notices VII

Safety Information

DANGER

To avoid a shock hazard, do not connect or
disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during
an electrical storm.

To avoid shock hazard:

•

The power cord must be connected to a properly
wired and earthed receptacle.

•

Any equipment to which this product will be
attached must also be connected to properly wired
receptacles.

When possible, use one hand to connect or
disconnect signal cables to prevent a possible shock
from touching two surfaces with different electrical
potentials.

Electrical current from power, telephone, and
communications cables is hazardous. To avoid shock
hazard, connect and disconnect cables as described
following when installing, moving, or opening covers
of this product or attached devices.

To Co n nect

1. Turn Everything OFF.

2. First, attach all cables to
devices.

3. Attach signal cables to
receptacles.

4. Attach power cord(s) to
outlet.

5. Turn device ON

To Disconnect

1. Turn Everything OFF.

2. First, remove power
cord(s) from outlet.

3. Remove signal cables
from receptacles.

4. Remove all cables from
devices.

IMPORTANT:

When replacing the battery, use only IBM Part
Number 33F8354 or an equivalent type battery
recommended by the manufacturer. If your
system has a module containing a lithium
battery, replace it only with the same module
type made by the same manufacturer. The

VIII

battery contains lithium and can explode if not
properly used, handled, or disposed of.

Do not:

•

Throw or immerse into water

•

Heat to more than 100°C (212°F)

•

Repair or disassemble

Dispose the battery as required by local ordinances
or regulations.

IMPORTANT:

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

Use of controls or adjustments or performance of
procedures other than those specified herein might
result in hazardous radiation exposure.

Removing the covers of the CD-ROM drive could
result in exposure to hazardous laser radiation. There
are no serviceable parts inside the CD-ROM drive.
Do not remove the CD-ROM drive covers.

DANGER

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

Laser radiation when open. Do not stare into the
beam, do not view directly with optical instruments,
and avoid direct exposure to the beam.

IMPORTANT:

Electrical current from power, telephone, and
communication cables can be hazardous. To avoid
personal injury or equipment damage, disconnect the
attached power cords, telecommunications systems,
networks, and modems before you open the server
covers, unless instructed otherwise in the installation
and configuration procedures.

Notices IX

PERIGO:

Para evitar choques elétricos, não conecte ou
desconecte nenhum cabo, nem efetue instalação,
manutenção ou reconfiguração deste produto
durante uma tempestade com raios.

Para evitar choques elétricos:

•

O cabo de alimentação deve ser conectado a um
receptáculo corretamente instalado e aterrado.

•

Todos os equipamentos aos quais este produto
será conectado devem também ser conectados a
receptáculos corretamente instalados.

Quando possível, utilize uma das mãos para
conectar ou desconectar cabos de sinal, para evitar
um possível choque ao tocar duas superfícies com
potenciais elétricos diferentes.

A corrente elétrica proveniente de cabos de
alimentação, de telefone e de comunicação é
perigosa. Para evitar choques elétricos, conecte e
desconecte os cabos conforme descrito a seguir, ao
instalar, movimentar ou abrir tampas deste produto
ou de dispositivos conectados.

Para Conectar

1.DESLIGUE tudo.

2.Conecte primeiro todos
oscabos nosdispositivos.

3.Conecte os cabos de sinal
nos receptáculos.

4.Conecte o(s) cabo(s) de
alimentação nas
tomadas.

5.LIGUE o dispositivo

X

Para Desconectar

1.DESLIGUE tudo.

2.Remova primeiro o(s)
cabo(s) de alimentação
das tomadas.

3.Remova os cabos de sinal
dos receptáculos.

4.Remova todos os cabos
dos dispositivos

CUIDADO:

Ao substituir a bateria, utilize apenas o Número de
Peça IBM 33F8354 ou um tipo de bateria equivalente
recomendado pelo fabricante. Se seu sistema
possuir um módulo com uma bateria de lítio,
substitua-o apenas pelo mesmo tipo de módulo,
produzido pelo mesmo fabricante. A bateria contém
lítio e pode explodir se não for utilizada, manuseada
e descartada de forma adequada.

Não:

•

Jogue ou coloque na água

•

Aqueça a mais de 100°C (212°F)

•

Conserte nem desmonte.

Descarte a bateria conforme requerido pelas
disposições e regulamentações locais.

CUIDADO:

Quando uma unidade de CD-ROM estiver instalada,
observe o seguinte.

A utilização de controles ou ajustes ou a execução de
procedimentos diferentes daqueles especificados
nesta publicação pode resultar em exposição
perigosa à radiação.

A remoção das tampas da unidade de CD-ROM pode
resultar em exposição a radiação perigosa de laser.
Não existem peças que possam ser consertadas no
interior da unidade de CD-ROM. Não remova as
tampas da unidade de CD-ROM.

PERIGO:

Algumas unidades de CD-ROM contém um diodo de
laser da Classe 3A ou da Classe 3B. Observe o
seguinte.

Radiação de laser quando aberto. Não olhe
diretamente para o feixe de laser, não olhe

Notices XI

diretamente com instrumentos óticos, e evite
exposição direta ao raio.

CUIDADO:

A corrente elétrica proveniente de cabos de
alimentação, de telefone e de comunicação é
perigosa. Para evitar ferimentos pessoais ou danos
aos equipamentos, desconecte os cabos de
alimentação, sistemas de telecomunicação, redes e
modems antes de abrir as tampas do servidor, a
menos que receba outras instruções nos
procedimentos de instalação e configuração.

XII

Notices XIII

XIV

Notices XV

XVI

PERIGO:

Pour éviter tout risque de choc électrique, ne
manipulez aucun câble et n'effectuez aucune
opération d'installation, d'entretien ou de
reconfiguration de ce produit au cours d'un orage.

Pour éviter tout risque de choc électrique :

•

Les cordons d'alimentation du présent produit et
de tous les appareils qui lui sont connectés doivent
être branchés sur des socles de prise de courant
correctement câblés et mis à la terre.

Afin d'éviter tout risque de choc électrique provenant
d'une différence de potentiel de terre, n'utilisez
qu'une main, lorsque cela est possible, pour
connecter ou déconnecter les cordons d'interface.

Le courant électrique passant dans les câbles de
communication, ou les cordons téléphoniques et
d'alimentation peut être dangereux. Pour éviter tout
risque de choc électrique, lorsque vous installez ou
que vous déplacez le présent produit ou des
périphériques qui lui sont raccordés, reportez-vous
aux instructions ci-dessous pour connecter et
déconnecter les différents cordons.

Connexion

1. Mettez les unités hors
tension.

2. Commencez par
brancher tous les
cordons sur les unités.

3. Branchez les câbles
d'interface sur les prises.

4. Branchez les cordons
d'alimentation sur un
socle de prise de
courant.

5. Mettez les unités sous
tension.

Déconnexion

1. Mettez les unités hors
tension.

2. Commencez pas
débrancher les cordons
alimentation des socles
de prise de courant.

3. Débranchez les câbles
d'interface des prises.

4. Débranchez tous les
câbles des unités.

Notices XVII

ATTENTION:

Remplacez la pile usagée par une pile de référence
identique exclusivement - voir la référence IBM - ou
par une pile équivalente recommandée par le
fabricant. Si votre système est doté d'un module
contenant une pile au lithium, vous devez le
remplacer uniquement par un module identique,
produit par le même fabricant. La pile contient du
lithium et présente donc un risque d'explosion en cas
de mauvaise manipulation ou utilisation.

•

Ne la jetez pas à l'eau.

•

Ne l'exposez pas à une température supérieure à
100°C.

•

Ne cherchez pas à la réparer ou à la démonter.

Pour la mise au rebut, reportez-vous à la
réglementation en vigueur.

ATTENTION:

Si une unité de CD-ROM est installée, prenez
connaissance des informations suivantes :

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

Pour éviter une exposition directe au rayon laser,
n'ouvrez pas l'unité de CD-ROM. Vous ne pouvez
effectuer aucune opération de maintenance à
l'intérieur.

PERIGO:

Certaines unités de CD-ROM contiennent une diode
laser de classe 3A ou 3B. Prenez connaissance des
informations suivantes :

Rayonnement laser lorsque le carter est ouvert.
Évitez de regarder fixement le faisceau ou de

XVIII

l'observer à l'aide d'instruments optiques. Évitez une
exposition directe au rayon.

ATTENTION:

Le courant électrique circulant dans les câbles de
communication et les cordons téléphoniques et
d'alimentation peut être dangereux. Pour votre
sécurité et celle de l'équipement, avant de retirer les
carters du serveur, mettez celui-ci hors tension et
déconnectez ses cordons d'alimentation, ainsi que
les câbles qui le relient aux réseaux, aux systèmes
de télécommunication et aux modems (sauf
instruction contraire mentionnée dans les procédures
d'installation et de configuration)

.

VORSICHT:

Aus Sicherheitsgründen bei Gewitter an diesem
Gerät keine Kabel anschließen oder lösen. Ferner
keine Installations-, Wartungs- oder
Rekonfigurationsarbeiten durchführen.

Aus Sicherheitsgründen:

•

Gerät nur an eine Schutzkontaktsteckdose mit
ordnungsgemäß geerdetem Schutzkontakt
anschließen.

•

Alle angeschlossenen Geräte ebenfalls an
Schutzkontaktsteckdosen mit ordnungsgemäß
geerdetem Schutzkontakt anschließen.

Signalkabel möglichst einhändig anschließen oder
lösen, um einen Stromschlag durch Berühren von
Oberflächen mit unterschiedlichem elektrischem
Potential zu vermeiden.

Elektrische Spannungen von Netz-, Telefon- und
Datenübertragungsleitungen sind gefährlich. Um
einen Stromschlag zu vermeiden, nur nach den
Anweisungen arbeiten, die für Installation, Transport

Notices XIX

oder Öffnen von Gehäusen dieses Produkts oder
angeschlossenen Einheiten gelten.

Kabel anschließen

1.Alle Geräte ausschalten
und Netzstecker ziehen.

2.Zuerst alle Kabel an
Einheiten anschließen.

3.Signalkabel an
Anschlußbuchsen
anschließen.

4.Netzstecker an Steckdose
anschließen.

5.Gerät einschalten.

Kabel lösen

1.Alle Geräte ausschalten.

2.Zuerst Netzstecker von
Steckdose lösen.

3.Signalkabel von
Anschlußbuchsen lösen.

4.Alle Kabel von Einheiten
lösen.

ACHTUNG:

Eine verbrauchte Batterie nur durch eine Batterie mit
der IBM Teilenummer 33F8354 oder durch eine vom
Hersteller empfohlene Batterie ersetzen. Wenn Ihr
System ein Modul mit einer Lithium-Batterie enthält,
ersetzen Sie es immer mit dem selben Modultyp vom
selben Hersteller. Die Batterie enthält Lithium und
kann bei unsachgemäßer Verwendung, Handhabung
oder Entsorgung explodieren.

Die Batterie nicht

•

mit Wasser in Berührung bringen.

•

über 100 C erhitzen.

•

reparieren oder zerlegen.

Die örtlichen Bestimmungen für die Entsorgung von
Sondermüll beachten.

ACHTUNG:

Wenn ein CD-ROM-Laufwerk installiert ist, beachten
Sie folgendes. Steuer- und Einstellelemente sowie
Verfahren nur entsprechend den Anweisungen im

XX

vorliegenden Handbuch einsetzen. Andernfalls kann
gefährliche Laserstrahlung auftreten.

Das Entfernen der Abdeckungen des CD-ROM­Laufwerks kann zu gefährlicher Laserstrahlung
führen. Es befinden sich keine Teile innerhalb des
CD-ROM-Laufwerks, die vom Benutzer gewartet
werden müssen. Die Verkleidung des CD-ROM­Laufwerks nicht öffnen.

VORSICHT:

Manche CD-ROM-Laufwerke enthalten eine
eingebaute Laserdiode der Klasse 3A oder 3B. Die
nachfolgend aufgeführten Punkte beachten.

Laserstrahlung bei geöffneter Tür. Niemals direkt in
den Laserstrahl sehen, nicht direkt mit optischen
Instrumenten betrachten und den Strahlungsbereich
meiden.

Notices XXI

ACHTUNG:

An Netz-, Telefon- und Datenleitungen können
gefährliche elektrische Spannungen anliegen. Um
eine Gefährdung des Benutzers oder Beschädigung
des Geräts zu vermeiden, ist der Server
auszuschalten. Die Verbindung zu den
angeschlossenen Netzkabeln,
Telekommunikationssystemen, Netzwerken und
Modems ist vor dem Öffnen des Servergehäuses zu
unterbrechen (sofern in Installations- und
Konfigurationsanweisungen nicht anders angegeben)

PERICOLO:

Per evitare il pericolo di scosse elettriche durante i
temporali, non collegare o scollegare cavi, non
effettuare l'installazione, la manutenzione o la
riconfigurazione di questo prodotto.

Per evitare il pericolo di scosse elettriche:

•

collegare il cavo di alimentazione ad una presa
elettrica correttamente cablata e munita di terra di
sicurezza;

•

collegare qualsiasi apparecchiatura collegata a
questo prodotto ad una presa elettrica
correttamente cablata e munita di terra di
sicurezza.

Quando possibile, collegare o scollegare i cavi di
segnale con una sola mano per evitare il rischio di
scosse derivanti dal contatto con due superfici a
diverso potenziale elettrico.

La corrente elettrica circolante nei cavi di
alimentazione, del telefono e di segnale è pericolosa.
Per evitare scosse elettriche, collegare e scollegare
icavi come descritto quando si effettuano
l'installazione, la rimozione o l'apertura dei coperchi
di questo prodotto o durante il collegamento delle
unità.

XXII

Per collegare

1.SPEGNERE tutti i
dispositivi.

2.Collegare prima tutti I cavi
alle unità.

3.Collegare i cavi di segnale
alle prese.

4.Collegare il(i) cavo(i) di
alimentazione alla presa
elettrica.

5.ACCENDERE le unità.

Per scollegare

1.SPEGNERE tutti i
dispositivi.

2.Rimuovere prima il(i)
cavo(i) di alimentazione
dalla presa elettrica.

3.Rimuovere i cavi di
segnale dalle prese.

4.Rimuovere tutti i cavi dalle
unità.

ATTENZIONE:

Quando si sostituisce la batteria, utilizzare solo una
batteria IBM o batterie dello stesso tipo o di tipo
equivalente consigliate dal produttore. Se il sistema
di cui si dispone è provvisto di un modulo contenente
una batteria al litio, sostituire tale batteria solo con un
tipo di modulo uguale a quello fornito dal produttore.
La batteria contiene litio e può esplodere se utilizzata,
maneggiata o smaltita impropriamente.

Evitare di:

•

Gettarla o immergerla in acqua

•

Riscaldarla ad una temperatura superiore ai 100°C

•

Cercare di ripararla o smaltirla

Smaltire secondo la normativa in vigore (D.Lgs 22 del
5/2/97) e successive disposizioni nazionali e locali.

Notices XXIII

ATTENZIONE:

Quando è installata un'unità CD-ROM, notare quanto
segue:

L'utilizzo di controlli, regolazioni o l'esecuzione di
procedure non descritti nel presente manuale
possono provocare l'esposizione a radiazioni
pericolose.

L'apertura di un'unità CD-ROM può determinare
l'esposizione a radiazioni laser pericolose. All'interno
dell'unità CD-ROM non vi sono parti su cui effettuare
l'assistenza tecnica. Non rimuovere i coperchi
dell'unità CD-ROM.

PERICOLO:

Alcune unità CD-ROM contengono all'interno un
diodo laser di Classe 3A o Classe 3B. Prestare
attenzione a quanto segue:

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

ATTENZIONE:

La corrente circolante nei cavi di alimentazione, del
telefono e di segnale è pericolosa. Per evitare
situazioni pericolose per le persone o
danneggiamenti all'apparecchiatura, scollegare i cavi
di alimentazione, i sistemi di telecomunicazioni, le reti
e ed i modem prima di aprire i coperchi del servente
se non diversamente indicato nelle procedure di
installazione e configurazione.

XXIV

Notices XXV

XXVI

PELIGRO:

Para evitar una posible descarga eléctrica, no
conecte ni desconecte los cables ni lleve a cabo
ninguna operación de instalación, de mantenimiento
o de reconfiguración de este producto durante una
tormenta eléctrica.

Para evitar una posible descarga:

•

El cable de alimentación debe conectarse a un
receptáculo con una instalación eléctrica correcta
y con toma de tierra.

•

Los aparatos a los que se conecte este producto
también deben estar conectados a receptáculos
con la debida instalación eléctrica.

Cuando sea posible, utilice una sola mano para
conectar o desconectar los cables de señal a fin de
evitar una posible descarga al tocar dos superficies
con distinto potencial eléctrico.

La corriente eléctrica de los cables de
comunicaciones, teléfono y alimentación puede
resultar peligrosa. Para evitar una posible descarga,
siga las indicaciones de conexión y desconexión de
los cables siempre que tenga que instalar, mover o
abrir las cubiertas de este producto o de los
dispositivos acoplados.

Instrucciones de
conexión

1.Apague todos los
componentes (OFF).

2.En primer lugar, conecte
todos los cables a los
dispositivos.

3.Conecte los cables de
señal a los receptáculos.

4.Conecte los cables de
alimentación a las tomas.

5.Encienda el dispositivo
(ON).

Instrucciones de
desconexión

1.Encienda todos los
componentes (ON).

2.En primer lugar, retire los
cables de alimentación de
las tomas.

3.Retire los cables de señal
de los receptáculos.

4.Retire todos los cables de
los dispositivos.

Notices XXVII

IMPORTANT:

Al cambiar la batería, utilice únicamente la batería
IBM Número de pieza 33F8354 o un tipo de batería
equivalente recomendado por el fabricante. Si el
sistema tiene un módulo que contiene una batería de
litio, sustitúyalo únicamente por el mismo tipo de
módulo del mismo fabricante. La batería contiene litio
y puede explotar si no se utiliza, manipula o desecha
correctamente.

Lo que no debe hacer

•

Tirar o sumergir el producto en agua.

•

Exponer el producto a una temperatura superior a
100°C.

•

Reparar o desmontar el producto.

Cuando quiera desechar la batería, siga las
disposiciones y reglamentaciones locales.

IMPORTANT:

Cuando instale una unidad de CD-ROM, tenga en
cuenta la siguiente información.

Si se llevan a cabo controles o ajustes o se utilizan
métodos que no se atengan a lo aquí especificado,
se puede producir una exposición peligrosa a las
radiaciones.

Si se retiran las cubiertas de la unidad de CD-ROM,
se puede producir una peligrosa exposición a
radiaciones de láser. Dentro de la unidad de CD­ROM no existen piezas reparables. No retire las
cubiertas de la unidad de CD-ROM.

PELIGRO:

Algunas unidades de CD-ROM tienen incorporado un
diodo de láser de Clase 3A o de Clase 3B Tenga en
cuenta la siguiente información.

XXVIII

Cuando la unidad está abierta se generan emisiones
de rayos láser. No dirija la mirada al haz, no lo
observe directamente con instrumentos ópticos y
evite la exposición directa.

IMPORTANT:

La corriente eléctrica de los cables de
comunicaciones, de teléfono y de alimentación puede
resultar peligrosa. Para evitar posibles lesiones o
daños del aparato, desconecte los cables de
alimentación, los sistemas de telecomunicaciones,
las redes y los módems antes de abrir las cubiertas
del servidor, salvo que se indique lo contrario en las
instrucciones de las operaciones de instalación y
configuración.

Notices XXIX

Laser Compliance Statement

The CD-ROM drive in the computer is a laser
product. The CD-ROM drive's classification label
(sample shown below) is located on the drive.

CLASS 1 LASER PRODUCT

APPAREIL A LASER CLASSE 1

LASER KLASSE 1

LUOKAN 1 LASERLAITE

PRODUIT LASER

CATEGORIE 1

The CD-ROM drive is certified in the U.S. to conform
to the requirements of the Department of Health and
Human Services 21 Code of Federal Regulations
(DHHS 21 CFR) Subchapter J for Class 1 laser
products.

In other countries, the drive is certified to conform to
the requirements of EN60825.

Class 1 laser products are not considered to be
hazardous. The CD-ROM drive has an internal Class
1, 0.5-milliwatt, aluminum gallium-arsenide laser that
operates at a wavelength of 760 to 810 manometers.

The design of the laser system and the CD-ROM
drive ensures that there is no exposure to laser
radiation above a Class 1 level during normal
operation, user maintenance, or servicing conditions.

XXX

Trademarks

The following are trademarks of the IBM Corporation
in the United States or other countries or both:

AT
HelpCenter
IBM
Operating System/2
OS/2
Personal System/2
PS/1
PS/2

Intel, Pentium, MMX, EtherExpress, and LANDesk
are trademarks or registered trademarks of Intel
Corporation.

Microsoft, MS-DOS, Windows, and Windows NT are
trademarks or registered trademarks of Microsoft
Corporation.

Other company, product, and service names may be
trademarks or service marks of others.

Notices XXXI

Preface

This manual contains service information for the

6644/6645/6646 Service Level A (SL-A)

the IBM Personal Computer, worldwide. This manual
is intended to be used as a stand-alone document to
service machine type 6644/6645/6646 products. It is
divided into the following chapters:

Notices

notices required to service this computer.

General Information

this manual.

Check Procedures

instructions that aid in locating the failing Field
Replaceable Unit (FRU).

Diagnostic Aids

tools for isolating failures.

Repairing Information

descriptions to disassemble and reassemble the
computer.

Parts/Test Point Locations

and descriptions of the locations of the major parts,
jumpers, and connectors .

Safety Inspection Guide

inspecting a machine for safety problems before
putting the machine under a Maintenance
Agreement.

Parts Catalog

and part numbers for individual FRUs.

Appendix A, FRU Number Index

numbers listed in numerical order.

contains important safety information and

contains a brief description of

provides step-by-step

explains how to use the diagnostics

contains illustrations and

contains illustrations

contains information about

contains descriptions, illustrations,

model of

contains part

XXXII

General Information

Introduction ............................................................ 2

Product Overview ...................................................3

Processors (Machine Type 6644) .................... 3

Processors (Machine Type 6645/6646) ...........3

Memory ........................................................... 3

External Ports .................................................. 4

Hard Disk Drive ............................................... 4

CD-ROM Drive ................................................ 4

Multimedia ....................................................... 4

Video ............................................................... 4

Power Management ........................................5

Power Supply ..................................................5

Internal Cabling ............................................... 5

Keyboard .........................................................5

Mouse ............................................................. 5

Hardware Interfaces ............................................... 6

CMOS Reset .......................................................... 7

Power-On Password .............................................. 8

Flash (BIOS) Update Procedure ............................ 9

BIOS-contained Model Number and

Serial Number ...................................................... 10

BIOS Configuration/Setup Utility .......................... 12

Working with the Setup Menus .....................12

Viewing System Information, and

Product Data .................................................15

Devices and I/O ports ....................................16

Start Options ................................................. 19

Date and Time ...............................................21

System Secruity ............................................ 21

Advanced Setup ............................................ 24

Power Management ......................................25

Specifications ....................................................... 27

Dimension (width x depth x height) ............... 27

Weight ........................................................... 27

Environment .................................................. 27

Electrical input ...............................................27

Operating Requirements ...................................... 28

General Information 1

Introduction

This chapter gives a general overview of the Machine
Type 6644/6645/6646, describes the standard and
optional features, and details functional and
environmental specifications.

2 IBM Desktop System HMM

Product Overview

Machine Types 6644, 6645, and 6646 have two low
profile PCI slots. The 6644 system comes with the
Intel Celeron processor family while the 6645 and
6646 comes with the Pentium III processor.

Listed below are 6644, 6645 and 6646 system
features:

Processors (Machine Type 6644)

•

Processor in Flip Chip-Pin Grid Array (FC-PGA)
package with integrated PBSRAM L2 cache
(128KB)

•

One of the following processors can be installed:

- Celeron - 566 MHz internal, 66 MHz external.

Processors (Machine Type 6645/6646)

Pentium III

Processor in Flip Chip-Pin Grid Array (FC-PGA)

•

package with integrated PBSRAM L2 cache
(256K)

•

One of the following processors can be installed:

- Pentium III - 667/733/866 MHz internal, 133 MHz
external

Memory

•

128-KB Pipeline Burst Static RAM (PBSRAM)
built-in Celeron processor for machine type 6644
and a 256-KB PBSRAM L2 cache built-in Pentium
III processor for machine types 6645/6646.

•

168-pin Synchronous Dynamic Random Access
Memory (SDRAM), Dual- in-line Memory Module
(DIMM) sockets.

- 2 memory sockets.

- Supports 64-MB, 128-MB or 256-MB DIMM.

- PC-100 (64-bit, non-ECC, 100MHz, 3.3volt)
DIMMs with gold contacts (PC-133 memory
running at 100 MHz)

- Maximum memory is 512 MB.

General Information 3

External Ports

•

Video port (15-pin D-sub connector)

•

Five USB ports (two USB ports located at the front
bezel).

•

Microphone-in jack

•

Line-out jack

•

Line-in jack

•

RJ-45 connector

Hard Disk Drive

•

3.5-in., 1-in. height IDE ATA-66 drive. (3.5-in may

be in acoustic mounting bracket)

•

128 KB “look-ahead” cache memory inside the
hard disk drive

•

Average and minimum 12 ms seek time, access
time varies for the hard disk drive and the hard
disk drive manufacturer

CD-ROM Drive

•

5.25-in. high-performance, 40X CD-ROM IDE/AT

drive

•

Read data and play audio from standard and mini
CD-ROM and audio compact discs (audio CDs)

Multimedia

•

An internal single speaker with power connector

Video

•

Onboard video controller (Direct AGP, built-in Intel
810e chipset)

4 IBM Desktop System HMM

Power Management

•

Compliant to ACPI and supports Display Power
Management Signaling (DPMS) monitor

•

Software shutdown by Windows 2000

•

System enters standby mode if any of following
conditions are met:

- Execute standby from Windows Start menu

- Press system power button if it is configured to
act as standby function.

- System is idle and the standby timer set in the
Windows Power Management Property elapses.

Power Supply

•

PC-98 compatible 95W ATX power supply

•

Switchable high/low voltage selection

Internal Cabling

•

Two 40-pin ribbon cables for hard disk drive and
CD-ROM drive.

•

One 8-pin (6-wire) cable for hard disk, power LEDs
and power switch.

Keyboard

•

Preferred USB or Rapid Access III USB keyboard
with 1.8-m (5.8-ft.) cable

Mouse

•

2 Button Sleek USB or ScrollPoint™ III USB mouse
with 1.8-m (5.8-ft.) cable

General Information 5

Hardware Interfaces

The following peripheral interfaces for adapters,
options, and drives are supported in the system unit.

Item Interface

Expansion slot for
I/O adapter cards

Hard disk drives Two PCI local bus Enhanced IDE

CD/CD-R/W drive 5.25-in. high-performance, 40X CD-

Video Physical interface is compatible with

Ethernet 10/100 Mbps, Auto-negotiation for

Audio Compatible to Sound Blaster, Sound

Pointing device IBM USB-compatible mouse
Keyboard device IBM USB-compatible keyboard
USB Supports Universal HCI Specification

Two low profile PCI (Peripheral
Component Interconnect) v2.1
compatible expansion slots that
operates at 33 MHz bus speed.

v1.0 compatible hard disk drive
interfaces that support:

- PIO mode up to 5 mode

- DMA 32-bit access

- Ultra 66 Synchronous DMA (66M
bytes/sec.).

ROM or 4X2X24 CD-R/W IDE/AT
drive.

Support Bootable CD-ROM Format
specification version 1.0.

Compliant to Audio-CD, Video-CD,
CD-ROM/XA, Karaoke-CD, and
Photo-CD (both single and multi­session) format.

the IBM Personal System/2 (PS/2)
VGA interface.

automatic speed selection
PCI 32-bit bus master architecture

provides high throughput with low
CPU utilization

Blaster Pro and Windows Sound
System

for USB 1.0

6 IBM Desktop System HMM

CMOS Reset

This system does not deny access to BIOS Setup
Utility, if Administrative Password is not set. Execute
“Load BIOS Default Settings” in BIOS Setup to clear
the corrupted CMOS data. See “Loading Default
Settings” on page 14.

General Information 7

Power-On Password

A power-on password denies access to the system by
an unauthorized user when the system is powered
on. When a power-on password is active, the
password prompt appears on the screen each time
the system is powered on. The system starts after the
proper password is entered. See “Power-On
password” on page 22 for more information about
how to change, remove and set password in BIOS
Setup.

In some cases, you might be required to service a
system with an active and unknown power-on
password. To clear a password from the system,
follow these steps.

1. Turn off system unit.

2. Unplug power cable from the electrical outlet.

IMPORTANT:

power cord plugged into the electrical outlet.
The power supply maintains +5 Vdc of standby
power when the power cord is plugged.
System damage might result if the power cord
is not unplugged during jumper setting.

3. Set JP7 to 2-3 position to clear BIOS setting as
original manufacture setting. See “System Board
Jumpers and Connectors” on page 105.

4. Plug power cable, turn on the system, and
complete the BIOS clear procedure.

5. Turn off the system, unplug power cable from
electrical outlet.

6. Set JP7 to the 1-2 position to enable password
check process. See “System Board Jumpers and
Connectors” on page 105.

IMPORTANT:

must enter a password in the Setup Utility. If
Enhanced Security is enabled and the password is
forgotten, the system board must be replaced .

Do not attempt these steps with the

To reinstall the password, the user

8 IBM Desktop System HMM

Flash (BIOS) Update Procedure

NOTE:

To run the Flash BIOS from a USB diskette drive or
an IDE LS120 drive, do the following:

1. Prepare a diskette with the extracted files from

2. Be sure a properly running USB diskette drive or

3. Insert the flash diskette into the USB diskette or

4. Power-off the system and then, power-on the

5. Follow the utitlity instruction to complete the BIOS

6. Wait for the update to complete.

IMPORTANT:

7. Power-off system after the BIOS is completely

8. For CD-ROM drive, insert the CD, power-off and

The flash update procedure will include
entering the model number and serial number
information in BIOS. The flash update
procedure can be performed from a USB
diskette drive, IDE CD-ROM drive, or a LS120
drive.

LFJTxxA.EXE (xx is the revision level). You can
get the latest Flash BIOS from the Web at http://
www.ibm.com/pc and select support and then
select computer type.

an IDE LS120 drive is connected to the computer
and that the drive is selected when the computer is
powered-on.

LS120 drive A:.

system to start the Flash BIOS.

update procedure.

Do not power-off the system while the
BIOS is running, or the flash ROM will be
destroyed.

updated.

then power-on the computer to start the Flash
BIOS, then go to step 5.

General Information 9

BIOS-contained Model Number and Serial Number

The model number and serial number information is
stored in BIOS ROM and displayed in the “Product
Data” of BIOS Configuration/Setup main menu. If a
service repair is completed by replacing a new
system board or a new BIOS ROM, then you are
required to input the original system's model number
and serial number into the new BIOS ROM.

Follow these steps to input the serial number and
model number to BIOS:

1. Use BIOS flash utility program.

2. After the language type is selected, the updated
serial number will appear on the screen as below:

IBM Corpo ration

POST/BI OS Upda te Util ity

The current Serial Number in your machine is: [ AAD3H8R ]
Would you like to update the Serial Number? [ Y/N ]

3. Press Y, then press Enter. When the screen
shows:

Version X.X

IBM Corpo ration

POST/BI OS Upda te Util ity

Please enter the Serial Number of your system

Version X.X

[ ]

Enter the serial number and press Enter to continue.

4. When the next screen shows to update model
number:

IBM Corpo ration

POST/BI OS Upda te Util ity

The current Machine Type/Model in your machine is:[H01506]
Would you like to update the Machine Type/Model? [ Y/N ]

Version X.X

Press Y, then press Enter.

10 IBM Desktop System HMM

5. When the screen shows:

IBM Corpo ration

POST/BI OS Upda te Util ity

Please enter the Machine Type/Model of your system

Version X.X

[ ]

Enter the model number and press Enter to continue.

6. Follow the instruction of the flash BIOS utility to
complete the BIOS update.

General Information 11

BIOS Configuration/Setup Utility

The Setup Utility lets you review and change
important information about the computer and its
hardware.

Working with the Setup Menus

Starting the Configuration/Setup Utility

Follow these steps to enter Setup when the computer
is off:

1. Turn on your monitor.

2. Press and hold F1.

3. Turn on the system unit.

If you have previously set a password, you are
prompted to type in the password after you press the
F1 key. Refer to the Configuration/Setup Utility Main
Menu below.

Configuration/Setup Utility

Select Options:

•

System Summary

•

Product Data

•

Devices and I/O Ports

•

Start Options

•

Sate and Time

•

System Security

•

Advanced Setup

•

Power Management

Save Settings
Restore Settings
Load Default Settings

Exit Setup

< F1 > Help < ↓↓↓↓ ↑↑↑↑ > Move
< ESC> Exit <Enter> Select

12 IBM Desktop System HMM

The following table lists specific keys on the keyboard
that will help you move through the Setup menus:

Keys Function

Down- or up­arrow key

Left- or right­arrow key

F1 Press this key if you want help for a

Esc After viewing or making changes to

Enter Press this key to choose a

F9 Press this key if you want to reload

F10 Press this key if you want to load

Use these arrow keys to highlight
an option on the menu. (Press the
Enter key to choose the option.)

Use these arrow keys to make a
selection and change an option's
setting. On some menus, you can
use these keys to move from one
field to another.

selected menu option.

the settings on a menu, press this
key to exit the menu.

highlighted option from a menu

the current settings for a line

the factory default settings from the
selected brackets.

Changing Parameter Settings

In the Setup menus, the configuration information that
you can change is enclosed in brackets like these: [ ].
You cannot change any information that is not
enclosed in brackets. Use the up- or down- arrow
keys to highlight options then press Enter to display a
menu. When changing the setting of a particular
parameter, highlight the setting then use the left- or
right- arrow key to change the setting. Refer to the
Configuration/Setup Utility help for details on the
configurable parameters in each menu.

General Information 13

Save Settings

After changing any parameter in the Setup
Configuration setting, return to Configuration/Setup
main menu and select Save Settings to save all the
settings you have changed.

Restore Settings

If you select this option, it will change the current
settings to their previous values. Then, press Enter
to continue.

Loading Default Settings

The computer is already configured for use. The
original configuration settings, also called factory or
default settings, are stored in the CMOS. Setup
includes an option Load Default Settings that lets you
reload the original configuration at any time.

To load the default settings, follow these steps:

1. Use down-arrow key to select load default settings.
A dialog box appears confirming if you want to
load the default settings.

2. Use the left-arrow key to select Yes, then press
Enter.

3. Press Esc to exit Setup.
A dialog box appears confirming if you want to
save the settings (in this case, the default settings
that you reloaded).

4. Use the left-arrow key to select Yes, then press
Enter to save the changes in Setup Configuration.

You must load the Setup default settings in the
following instances:

•

When you replace the system battery.

•

When you customize the system configuration
settings and some resource assignments conflict
causing the computer to stop responding.

14 IBM Desktop System HMM

Exiting Setup

Press Esc to return to the Main Menu when you have
finished viewing settings and making changes. From
this location, you can exit Setup and save your
changes or exit without saving your changes.

Follow these steps to exit Setup:

1. From the main menu, press the Esc key.

2. The Exit Setup dialog box appears. If you have
made changes in the parameter settings, it will
contain an option for saving your changes.

- If you would like to save your changes, press the

down-arrow key to select the option “Yes, save
and exit the Setup Utility.”, then press Enter to
save your changes and exit Setup.

- If you do not want to save your changes, press

the down-arrow key to select the option “No, exit
the Setup Utility without saving.”, then press En­ter to exit Setup without saving.

- If you do not want to exit the setup utility, press

the down-arrow key to select the option “No, re­turn to the Setup Utility” then press Enter.

Viewing System Information, and Product Data

To view general hardware information about your
computer, select the System Summary option from
the Setup main menu. The items displayed in the
System Information menu are not configurable.

Setup automatically updates this menu when you do
either of the following:

•

Add or change hardware on your computer

•

Make changes to other menus in Setup and save
those changes

To view the computer information such as the model
number, system board identifier, serial number,
system UUID, and BIOS version and date, select the
Product Data option from the Setup main menu. Like
in the System Information menu, the items displayed
are not configurable.

General Information 15

Devices and I/O ports

If you install USB devices, video, IDE drives, audio, or
network drive, BIOS auto-detects the presence of
these devices. Enter Setup to identify or verify the
type of drive installed in the computer.

If you want to change any drive setting, select
Devices and I/O Ports from the main menu. The
Devices and I/O Ports menu appears showing the
USB boot device parameters.

USB Boot device

The item Universal Serial Bus (USB) parameter
displayed in the Devices and I/O Ports option is not
configurable and the default setting is “Detected“.

Video Setup

Active Video

This item displays the onboard video controller
chipset information. It is not configurable.

Shared System Memory

Set the amount of system memory (512 KB or 1 MB)
to be reserved for the integrated video. Operating
systems that use SVGA will dynamically allocate
additional system memory for the integrated video.
The integrated video requires a minimum of 512KB of
shared system memory. POST will allocate 1 MB of
shared video memory if no other video memory is
detected.

Select Active Video

The parameter allows you to select PCI or integrated.
When the computer is started, it will select the video
that is active. If the selected video is not available,
the computer will select a default video. The default
is set to “PCI“.

16 IBM Desktop System HMM

Palette Snooping

The default setting is “Disabled“. It is necessary to
enable palette snooping if your system has a video
multimedia adapter installed and incorrect colors are
displayed on screen, and also your system has a PCI
video adapter installed that supports palette
snooping.

Video Interrupt

This parameter allows you to select “Disabled” for the
video interrupt if your video adapter does not require
an interrupt and your system is having problems
assigning interrupts to other adapters that need them.
The default is set to “Enabled“.

IDE Drive Setup

The Device and I/O Ports menu includes four IDE
drive items that allow you to configure the hard disk
drives and the CD/CD-R/W-ROM drive. Selecting any
one of these items displays a submenu with details
on a particular IDE drive.

The IDE drive items are identified as follows:

IDE Hard Disk Drive 0

IDE Hard Disk Drive 0 is attached to IDE connector 1
on the system board. This is the hard disk that
comes pre-installed with your computer.

•

Size:
It is not configurable. The BIOS will auto-detect the
size from the hard disk drive.

•

IDE Performance:
The “High Performance“ mode allows IDE devices
attached to the system board IDE controller to
utilize any performance enhancement features the
device may support. If an IDE device attached to
the system board IDE controller does not function
properly or causes other IDE devices attached to
the same controller not to function properly, set
this field to the “Compatible“ mode. This will allow
other IDE hard disk drives or IDE devices which do
not follow the ATA IDE specification to function
properly. The default is set to “High
Performance“.

General Information 17

•

IDE Read Prefetch:
The default setting is “Disabled”. Read prefetch
can improve performance of your system. IDE
CD-ROM devices and some operating systems
may not work properly with this feature “Enabled”.

IDE Hard Disk Drive 1

IDE Hard Disk Drive 1 (if installed) is attached to IDE
connector 1 on the system board and is set as the
slave device.

•

Size:
The default is set to “Not installed“.

IDE CD-ROM Drive 2

IDE CD-ROM Drive 2 is attached to IDE connector 2
on the system board and a pre-installed CD-ROM
drive is connected here.

•

IDE Performance:
The “High Performance“ mode allows IDE devices
attached to the system board IDE controller to
utilize any performance enhancement features the
device may support. If it does not function
properly, set this field to the “Compatible“ mode.
The default is set to “High Performance“.

Audio Setup

• Audio Support:

This parameter enables or disables the onboard
audio controller chipset. This item does not appear
in the menu if there is no physical audio chipset on
the system board. The default setting is Enabled.

18 IBM Desktop System HMM

Network Setup

Alert on LAN

When Enabled, the Alert on LAN feature allows
POST errors, environmental Conditions, and
operating system hang conditions to be reported to
the Network Administrator. Alert on LAN is enabled
by Alert on LAN application software. The parameter
is not configurable and is set to “Disabled”.

Preboot Execution Environment Base Code

This parameter allows you to enable or disable the
Preboot Execution Environment (PXE) base code
feature. Select whether to load the (PXE) Version 2.0
Base Code image when a PCI network device is
detected. The Base Code may be needed to allow
startup from some PCI network devices. The default
setting is “Disabled“.

PCI Boot Entry Vector Startup

The parameter allows you to select whether to allow
PCI network devices which provide a Boot Entry
Vector (BEV) to be added to the startup sequence.
The default is set to “Enabled“.

Startup Options

From the Setup main menu, select Start Options to
view or change start-up configuration settings.

Startup Sequence

The system can load the operating system from one
of several devices. The startup sequence
determines the order of bootable devices the system
attempts to load the operating system from. When
the previous startup boot device is set to disabled, the
rest of following boot sequence will not be available to
configure and the value will be “Disabled“.

Primary Startup Sequence

The primary startup sequence is used when the
system is powered on by the power switch. The
startup sequence will be USB Boot Device, CD-ROM,
Hard Disk 0, Network and Disabled.

General Information 19

Automatics Power-on Startup Sequence

This item allows you to select enabled if you want to
use a different startup sequence when your system is
started using the Automatic Power-On features.

•

First Startup Device:
The default is set to Network.

•

Second Startup Device:
The default setting is Hard Disk 0.

•

Third Startup Device:
The default is Disabled.

•

Fourth Startup Device:
When the previous startup device is set to
disabled, the fourth startup device will become un­configurable. The default value is “Disabled“.

Error Startup Sequence

Select “Disabled“ if you want to start Setup whenever
a POST (Power-On Self Test) error occurs. Select
other options such as Network, Primary, Automatic, or
Disabled if you want to bypass Setup and use a
different startup sequence when a POST error
occurs. You will still be able to enter Setup using the
F1 key or on the POST error menu. The default is
set to “Network“.

Power-On Self Test

When set to “Quick”, which is the default, this
parameter allows the system to boot faster by
skipping some power-on self-test (POST) routines.

Power-On Logos

This parameter enables or disables to display the IBM
logo function. When set to “Enabled”, which is the
default, BIOS is in graphical mode and displays the
IBM logo while booting. If it is set to Disable, the
system will not display the logo on the screen.

Option Key Display

This option controls the prompt of the system
software option keys (such as the F1 and Esc keys)
when the system is turned on. This may or may not
affect the function of a specific key. Select “Enabled“
to display the prompts.

20 IBM Desktop System HMM

Network Boot Prompt

This option allows the user to boot from the Network
by pressing F12 after the system is turned on.
Pressing F12 will override the normal boot sequence.
Select “Enabled“ to display the F12 prompt.

Power-On Status

This option controls the display of the memory count,
system check points, and beeps when the system is
turned on. Select “Enabled” to allow this information
to be displayed. Select “Disabled“ which is the
default value to turn these off.

Virus Detection

The system has a built-in virus detection program.
The virus detection program runs at boot time, and
can be enabled or disabled from this field. The
default is set to “Disabled“.

Date and Time

From the Configuration/Setup main menu, select the
Date and Time option to view or change the system
clock from the Date and Time menu. If you want to
change the system date, enter the date in the format
shown on the screen.

If you change the time, enter the time in 24-hour
format (hours, minutes, seconds). For example:

- 12 midnight is 00:00:00

- 12 noon is 12:00:00

- 1 p.m. is 13:00:00

When setting date and time, press the up- or down­arrow key to highlight a field. The date and time are
saved as you type it.

System Security

Enhanced Security Enabled/Disabled

Enhanced Security can be Enabled or Disabled only
while flashing the system BIOS. Enhanced Security
Enabled gives the highest level of protection of
system resources by locking the Administrator
password and startup sequence in the EEPROM.
This level of security may not be desirable in
networking environment.

General Information 21

Security Profile by Device

IDE Controller

All devices attached to the system board IDE
controller can be disabled using this field. When
disabled, IDE hard disk drives, IDE CD-ROM drives
or any other devices attached to the system IDE
controller will not appear in the system configuration.

Password to request before booting

There are three options for the following selections.
First, User, which is the Power-on password. Second,
Administrator, which allows the system to boot from
the device. Third, Not Required, which means a
password is not required to boot from the device.
This option may be desired if the operating system
meets the security.

Remote Administration

Select “Enabled“ to allow remote administration, such
as the POST/BIOS Update Utility, to be run from a
remote system without requiring entry of your
administrator password.

Power-On password

Select this parameter and press the down arrow key
to display the Power-on Password window. In this
window, you can set up a password to restrict the use
of your computer. You can also change or remove the
password.

If you set up a power-on password, you must type this
password each time you turn on your computer. If you
do not key in the correct password, you cannot use
your computer. You must also type this password if
you want to enter Setup.

Setting a Power-On Password

1. Press F1 to Enter Configuration/Setup Utility.

2. From the Setup main menu, select System
Security and then Power-On Password.

3. Highlight the Power-On Password parameter and
press the Enter key to display the Power-On
Password window.

4. Type a password consisting of up to seven
characters, then press Enter.

22 IBM Desktop System HMM

5. Retype the password then press Enter.

6. Press Enter again to confirm the setting of the
password. Pressing Esc aborts the password
setting.
After pressing Enter, the Power-On Password
window disappears. The Power-On Password
parameter automatically sets to Present.

7. Press Esc to return to Setup main menu.

8. Press Esc to exit Setup and reboot the system.
Answer Yes when prompted to save settings.

The next time you turn on the system, you will be
prompted to enter your Power-On Password. If you
press F1 during POST to enter Setup, you must key
in the password as well.

If you were not able to set a password after
performing the above procedure, or should you
encounter any error message when setting a
password, refer to “Power-On Password” on page 8
about how to set the hardware jumper to clear
password check.

Changing the Power-On Password

1. Enter Setup.

2. Key in your current password when prompted.

3. From the Setup main menu, select System
Security, then Power-On Password Options.

4. Type in a new password then press Enter.

5. Retype the new password then press Enter.

6. Press down-arrow key to highlight Change
Power-On Password again to confirm changing
the password.

7. Press Esc twice to return to the Setup main menu.

8. Press Save Settings to save the password and
press Exit to exit Setup menu, and then reboot the
system.
If you change your mind and decide not to change
your password, just answer No when return to
CMOS settings to reset the Power-On Password.

Delete Power-On Password

1. Enter Setup and select System Security Options,
then Power-On password Options.

2. Press the up- or down arrow key to select “Delete

General Information 23

Power-On Password”.

3. Press Esc to return to Setup main menu.

4. Select Save Settings and Exit Setup to save and
exit Setup and reboot the system.

Administrator Password

For the basic administrator password setting, follow
the same rule with Power-On Password to set up,
change, or delete a password.

Require Administrator Password when flashing

If it is set to No, the Administrator password will not
be required when updating the system software. The
default setting is “Yes”.

Power-On Password Changeable by User

This parameter enables you to change or not to
change the Power-On Password with the
administrator password set. The default is “No”.

Require Power-On Password on Warm boot

When set to “Yes”, the Power-On Password will be
required whenever the system is restarted. If you
select No, the Power-On Password will only be
required when the system is started with a cold boot.

Adapter ROM Security

If set to”Yes”, the keyboard will be locked during
adapter ROM initialization. This can be used in
conjunction with an Administrator password to
prevent the use of adapter ROM based utilities. The
default is set to “No“.

Asset ID

This enables wireless RF communication for Asset
ID. The default is “Disabled“.

Advanced Setup

IMPORTANT:

advanced hardware features. If they are
configured incorrectly, the system might
malfunction.

24 IBM Desktop System HMM

Items on the following menus control

PCI Control

PCI Parity

The parameter allows you to enable or disable parity
checking of data across the PCI bus. Some adapters
do not generate parity and will require this option set
to disable. The default is set to “Enabled”.

Plug and Play Control

Plug and Play Operating System

Select “Yes”, if you are experiencing POST errors
numbered 185x and your system will be booting a
Plug and Play compliant operating system.

The 185x errors are caused by the system being
unable to configure all adapters and devices in the
system because of conflicting resource assignments.
Selecting “Yes“ allows the configuration of Plug and
Play devices not required for booting to be performed
by the operating system, which can better manage
the resource assignments of Plug and Play adapters
and devices. The default is “No“.

Processor Control

It will indicate the Intel processor ID number and
microcode revision date. This information is not
configurabled.

Power Management

Wake on LAN

Select “Enabled” to allow your system to power-on in
response to LAN wake up requests if the network
adapter in your system supports this feature. The
default is set to “Disabled“

Startup Sequence

When the Wake on LAN is set to “Enabled“, Startup
Sequence will become configurable. Select the start­up sequence you want to use for this type of
power-on event. If you select “Automatic“, make
sure that the Automatic Power-On Start-up Sequence
is set to “Enabled“; otherwise the system will use the
“Primary“ startup sequence.

General Information 25

ACPI BIOS IRQ

This field controls what IRQ the Advanced
Configuration and Power Interface (ACPI) will use.
This should only be changed to resolve a conflict with
an ISA Legacy adapter.

26 IBM Desktop System HMM

Specifications

Dimension (width x depth x height)

•

System unit: 88mm x 305 mm x 392 mm

Weight

•

System unit: 6.3 kg (14 lb)

Environment

•

Temperature for system unit:

•

Power-on: 10° to 35°C (50° to 95°F)

•

Power-off: -10° to 60°C (14° to 140°F)

•

Humidity for system unit:

•

Power-on: 20% to 80%

•

Power-off: 20% to 80%

•

Power consumption

•

System unit: Maximum 95 Watts

Electrical input

•

Input voltage for system unit (Sine-wave input is
required)

•

Low Range: 90 Vac to 132 Vac

•

High Range: 180 Vac to 264 Vac

General Information 27

Operating Requirements

All machines require two power inputs: one for the
system unit and one for the monitor display.

The system units come with a voltage selector switch,
allowing selection of voltage of either 115 Vac or 230
Vac. This switch must be in the 230 Vac position
when the machine is plugged into a 230 Vac electrical
outlet.

The required power input for the monitor (Not
included with some models) shipped with the system
unit is auto-sensing type and does not require any
voltage switch adjustment.

28 IBM Desktop System HMM

Check Procedures

Introduction .......................................................... 30

Start ..................................................................... 31

Index of Symptoms, Messages, Error Codes,

or Beeps ...............................................................36

Troubleshooting ...................................................55

Factory-Installed Storage Devices ................ 55

Audio (Not Supported by Diagnostics Program) .. 59

CD-ROM Drive ..................................................... 62

Memory ................................................................ 64

Keyboard ..............................................................65

Mouse .................................................................. 66

Power Supply .......................................................68

Monitor ................................................................. 70

Undetermined Problems ......................................72

Check Procedures 29

Introduction

This chapter contains the check procedures used to
diagnose the causes of product failures. The
diagnostic information consists of:

Start:

This is the starting point for any diagnostic
action. Based on high-level symptoms, the check
procedure directs you to more detailed procedures to
help resolve machine failures.

Index of Symptoms, Messages, Error Codes, or
Beeps:

Beeps and Error Symptoms list along with their
probable causes, and direct you to the applicable
check procedures to help resolve machine failures.
These tables also list the field replaceable units
(FRUs) most likely to cause a particular problem.

Check Procedures:

procedure or the Index of Symptoms, Messages,
Error Codes, or Beeps tables point you to a specific
check procedure, proceed to that section. If there are
any notes or instructions at the top of the page, read
them before you begin with the procedure. Carefully
read each step of the check procedure and perform
the steps as instructed. If you do not remember the
location of a specific part or test point, or an
adjustment or removal procedure, see the chapter
that contains that information. Always return to the
check procedure after you do this. In some cases,
you are referred to other check procedures to detect
the cause of the failure.

The tables for BIOS Error Messages, Codes,

When the Start check

30 IBM Desktop System HMM

Start

This is the entry point for all check procedures. The
check procedures use failure symptoms, Power-On
Self Test (POST) error codes, or beeps to help
determine the defective field replaceable unit (FRU).
Follow the suggested check procedures or use the
diagnostics CD to determine the problem FRU.

IMPORTANT:

determined that the error is not a result of
software, loose contacts, or dirty component
surfaces. Any FRU change should be verified
by running a complete test (“Diagnostics - Run
Normal Test” in PC-Doctor diagnostics
program).

NOTE:

created from the Recovery CD if the user has a
USB diskette drive attached.

The diagnostic program diskette diskette should be
used ONLY with

(SL-A)

IBM Personal Computers. Do not use this

diskette on other models.

POST error codes and error messages are displayed
on the screen after the IBM logo. Meanwhile, error
beeps could be issued to help diagnose system
problem. Please refer to “Index of Symptoms,
Messages, Error Codes, or Beeps” on page 36 for
additional help.

All voltages in the check procedures are positive
unless otherwise indicated. Use frame ground for all
voltage checks unless otherwise specified.

NOTE:

a FRU and the error message persists, an
option adapter card might be causing the
failure. Remove all option adapter cards, one
at a time, until the error changes or the
problem is no longer apparent. Replace the
last option adapter card removed.

Replace FRUs ONLY when it is

The disagnostic program diskette can be

6644/6645/6646 Service Level A

If the check procedures instruct you to replace

The hard disk drive contains pre-loaded software.
Refer to “Software Recovery Procedure” on page
102, to reinstall the original software. Be sure to
reload the software on the primary hard disk drive
(Drive C) when replacing it.

IMPORTANT:

The drives in the system you are

Check Procedures 31

servicing may have been rearranged, or the
drive startup sequence has changed. Be
extremely careful during write operations, such
as copying, saving, or formatting. Data or
programs can be overwritten if you select an
incorrect drive. Ask the customer to back up

any additional software from the hard disk
drive before you reload the software.

How to Diagnose Combined FRUs: If an adapter or

device consists of more than one FRU, any of the
FRUs might cause an error code. Before replacing
the device or adapter, remove the FRUs one by one
to see if the symptoms change.

If a newly replaced FRU does not correct the
problem: If you have reached this point of the check

procedures and were instructed to replace a FRU but
doing so did not correct the problem, reinstall the
original FRU and go through “Start” again.

If you want to print a copy of a BIOS Setup Utility
screen to an attached printer, press Print Screen key
while the following screen is displayed.

READ THE FOLLOWING:

Human Error is a cause for concern when applied
to check procedures. It exists in every first time
set of analysis procedures. It is therefore
essential for effective and time-efficient servicing
that each stage of every procedure be verified.
(For example: When a symptom is found, or when
a symptom appears to have been cured; the
preceding steps should be repeated for accuracy
of analysis.)

001 - START

•

To begin, note the following:

•

Disable the setting of “Fast POST Mode” in BIOS
Setup.

•

To disable or reset the power-on password, see
“Power-On Password” on page 8.

•

Disconnect all external cables and devices from
the system unit, except for the keyboard, mouse,
and monitor.

•

Power off the system unit (unplug the power cord)
before moving it or when replacing FRUs.

32 IBM Desktop System HMM

•

Remove all adapter cards, except for the factory­installed adapter cards.

•

Disconnect all drives except:

- Hard disk drive

- IBM factory-installed devices (such as a CD­ROM drive)

•

Ensure that all power cords and cables are
connected properly.

•

Ensure that the monitor brightness and contrast
controls are not turned down.

•

Power on the system unit.

NOTE: Some monitors have a detachable system I/O

signal cable between the monitor and the
system unit. In this case, check this signal
cable before replacing the unit. See “Monitor
Port Signals” on page 117 for pin identification.

•

Ensure correct monitor refresh rate.

•

Note any symptoms, messages, error codes, or
beeps.

•

Make sure that there are no CD in the drives.

002 - DOES AN IBM LOGO SCREEN APPEAR?
(YES, READ AHEAD. NO, GO TO STEP 004.)

•

Insert diagnostics CD in the CD-ROM drive or the
the diagnostic diskette in a USB attached diskette
drive.

003 - DOES SYSTEM LOAD THE DIAGNOSTICS
PROGRAM ? (YES, READ AHEAD. NO, GO TO
STEP 004.)

•

Follow the instructions on the screen and select
Utility from the diagnostics program menu.

•

Select Tech Support Form from the menu, press
F5 to execute, then generate a system
configuration report.

•

Compare the system configuration list with the
actual devices installed in system.

NOTE: If necessary, remove the machine cover and

visually compare the devices installed in
system to those shown in the system
configuration report.

•

Go to step 006.

Check Procedures 33

004 - DO ANY MESSAGES, ERROR CODES, OR
SYMPTOMS APPEAR? (YES, READ AHEAD. NO,
GO TO STEP 005)

•

Go to “Index of Symptoms, Messages, Error
Codes, or Beeps” on page 36.

•

End.

005 -

•

If the keyboard responds incorrectly, go to
“Keyboard” on page 65.

•

If monitor problems appear, such as jittering,
shifting, or being out of focus, go to “Monitor” on
page 70.

006 - DOES THE SYSTEM CONFIGURATION
REPORT CORRECTLY IDENTIFY THE DEVICES
INSTALLED IN SYSTEM? (YES, READ AHEAD.
NO, GO TO STEP 007.)

•

Select Diagnostics from the diagnostics program
menu.

•

Select and execute Run Normal Test.

- Go to step 008.

007 -

•

The system configuration report shows only those
devices supported by the diagnostics CD.

•

If a device is missing from the list and is not factory
installed, refer to the service manual provided for
that device.

008 - DO THE DIAGNOSTICS FINISH WITHOUT
ANY ERRORS? (YES, READ AHEAD. NO, GO TO
STEP 009.)

•

If the Diagnostics \ Run Normal Test did not detect
a failure but the system still indicates a failure:

- Check all adapter card jumper settings.

- Check all adapter card switch settings.

- Check all adapter card cables and connectors.
Make sure that all of the above are set correctly
and show the correct voltages and continuity. Re­place any defective cables or adapter cards. See
“Parts/Test Point Locations” on page 103.

- Run the Diagnostics \ Run Normal Test again.

34 IBM Desktop System HMM

- If an error or other symptom is displayed, go to
“Index of Symptoms, Messages, Error Codes, or
Beeps” on page 36.

- If no error can be detected or the symptom is in­termittent, go to “Undetermined Problems” on
page 72.

•

End

009 -

•

If the last test stops and you cannot continue, first
make sure all switches, power connectors, cables,
and jumpers are set correctly and show the correct
voltages and continuity.

•

Take note of any messages, error codes, beeps, or
new symptoms. Go to “Index of Symptoms,
Messages, Error Codes, or Beeps” on page 36.

•

If there is no error symptom or the error symptom
is intermittent, go to “Undetermined Problems” on
page 72.

Check Procedures 35

Index of Symptoms, Messages, Error Codes, or Beeps

How to Use Error Messages:

error codes, and beeps combinations that occur to
diagnose failures. If more than one failure occurs,
begin the diagnosis from the first failure that
appeared. The cause of the first failure can result in
false messages, error codes, or beeps. If you did not
receive any messages, error codes, or beeps, see if
the symptom is listed in “Table 2-3 Error Symptoms
List” on page 48.

IMPORTANT:

to replace a FRU, and have done so, you must
run a total system check to ensure that no
other activity has been affected by the change.
This system check can be done through the
diagnostics program (Select Diagnostics, then
select and execute Run Normal Test from PC­Doctor).

POST:

Some diagnostic aids are resident in the
machine, such as the Power-On Self Test (POST).
The machine performs the POST each time it is
powered on. Use this information throughout the
diagnostic procedures. The POST is a series of
system checks and initializations that verify the
correct operation of the base system.

After a successful POST, the system attempts to load
operating system. The system can be customized for
different startup (boot) methods by the BIOS Setup
Utility. “Date and Time” on page 21.

When you have deemed it necessary

Use the messages,

The system's default startup sequence automatically
looks for the operating system files in the hard disk if
these files are not found in the CD.

IMPORTANT:

areas, but only those that allow the system to
operate well enough to run the diagnostics
program.

Table 2-1 lists BIOS error codes, messages and their
possible causes. Table 2-2 lists BIOS beeps and their
possible causes. Table 2-3 lists error symptoms and
their possible causes. The most likely cause is listed
first. Make sure you complete all items in the cause or

36 IBM Desktop System HMM

Remember that POST does not test all

“Action/FRU” column. When servicing a system,
always begin with “Start” on page 31.

If you are unable to correct the problem using these
two index tables, go to “Undetermined Problems” on
page 72.

NOTE:

1. If an error message and incorrect audio response

occur, diagnose the error message first.

2. If you cannot run the diagnostics program tests but

did receive a POST error code and message, use
“Table 2-1 POST Error Codes and Messages List”
on page 38 to diagnose system problems.

3. If you cannot run the diagnostics program tests but

did receive a POST error beeps, use See “Table 2­2 BIOS Error Beeps List” on page 45 to diagnose
system problems.

4. If you did not receive any error message, look for a

description of your error symptoms in “Table 2-3
Error Symptoms List” on page 48.

IMPORTANT: Check all power supply voltages,

switch, and jumper settings before you replace
the system board. Also check the power supply
voltages if you have a “system no-power”
condition.

5. If you are unable to correct the problem by using

the “BIOS Error Codes, Messages, and Beeps
List” table and “Error Symptoms List” table, go to
“Undetermined Problems” on page 72.

Check Procedures 37

Table 2-1 POST Error Codes and Messages List

NOTE:

To diagnose a problem, first find the BIOS error
messages or codes in left column. If directed to a
check procedure, replace the FRU indicated in the
check procedure. If no check procedure is indicated,
the first Action/FRU listed in right column is the most
likely cause.

BIOS Error Codes,

Messages

0101
Timer Tick Interrrupt Error
0102
Timer 2 Test Error

0103
Processor Speed Set Too

High

0106
Diskette Controller Error

0114
Option ROM checksum

0129
L1 Cache Error

0131
POST Detected a Planar

Voltage is Out of Range
0135

Processor Fan Error

0136
Hardfile Fan Error

0151
Real Time Clock Error
0161
Real Time Clock Battery

Error

Action/FRU

Enter BIOS Setup and load
the default settings.

RTC Battery.
System Board.

Enter BIOS setting to load
default settings:

1. Proper speed for
processor. Speed should
be a multiple of the
original processor.

Reset the jumper.See
“Power-On Password” on
page 8.

Processor.
System board

Adapter card
System board

Processor
System board

System board

Re-connect processor fan
cable.

System board
System board

Enter BIOS Setup and load
the default settings.

RTC Battery.
System Board.

38 IBM Desktop System HMM

Table 2-1 POST Error Codes and Messages List

NOTE:

To diagnose a problem, first find the BIOS error
messages or codes in left column. If directed to a
check procedure, replace the FRU indicated in the
check procedure. If no check procedure is indicated,
the first Action/FRU listed in right column is the most
likely cause.

BIOS Error Codes,

Messages

0162
Invalid Configutation

Information

0163
Time of Day not set

0164
Memory Size Does Not

Match CMOS

0166
Boot Block Checksum Error

0167
No Processor Update Found

Error

0168
ALert-on-LAN is Inoperative

0175
Bad EEPROM CRC #1

0176
System Tampered

0177
Inventory Violation

Action/FRU

Re-connect the cables.
Adapter card
Drives
Power supply
System board

Ensure the time set in BIOS
Setup is correct.

Enter BIOS Setup and load
the default settings.

DIMMs
System board

BIOS version.
BIOS ROM

Enter BIOS setting to load
default settings:

1. Proper speed for
processor. Speed should
be a multiple of the
original processor.

Reset the jumper.See
“Power-On password” on
page 22.

Processor
Enter BIOS Setup and load

the default settings.
Adapter card
System board

System board

Enter BIOS Setup and load
the default settings.

System board
System board

Check Procedures 39

Table 2-1 POST Error Codes and Messages List

NOTE:

To diagnose a problem, first find the BIOS error
messages or codes in left column. If directed to a
check procedure, replace the FRU indicated in the
check procedure. If no check procedure is indicated,
the first Action/FRU listed in right column is the most
likely cause.

BIOS Error Codes,

Messages

0183
PAP is Required

0184
Asset control Antenna not

Detected
0186

Secure Data can Not be
Recovered

0187
Bootseq and Administrator

Password Cleared
0190

System Tampered Reset
0191

Security Hardware Reset
0192
Security Hardware Tamper

Detected
0193
Security Hardware

Removed

0194
RFID Antenna Removed
0195
RFID Antenna Installed

0201
Memory Error

Action/FRU

Enter Administrator
password

Enter new password

System board

Clear Administrator
password

System board
If the code does not clear,

replace the system board.

Enter Administrator
password

Check Setup
System board

Information for the system
administrator

Error can be cleared in
Setup

Antenna
System board

DIMMs
I/O channel memory
System board

40 IBM Desktop System HMM

Table 2-1 POST Error Codes and Messages List

NOTE:

To diagnose a problem, first find the BIOS error
messages or codes in left column. If directed to a
check procedure, replace the FRU indicated in the
check procedure. If no check procedure is indicated,
the first Action/FRU listed in right column is the most
likely cause.

BIOS Error Codes,

Messages

0203
ECC Memory Required
0204
Memory Test Failed

0205
Memory Conflict Error

0206
Memory Configuration Error
0207
Memory Continuity Error

0229
L2 Cache Error

0262
DRAM Parity Configuration

0301
Keyboard Error
0303
Keyboard Controller Error

0604
Diskette Drive Error
0605
Diskette Unlocked Problem
0662
Diskette Drive Configuration

0762
Coprocessor Configuration

1762
Hard Disk Configuration

Action/FRU

DIMMs
System board

System board

Reconnect Memory
DIMMs
System board

Processor
System board

Enter BIOS and load default
settings.

DIMM
System board

Re-connect keyboard.
Enter BIOS and load default

settings.
Keyboard
System Board

Reconnect diskette drive
Diskette drive
System board

Enter BIOS and load default
settings.

System board
Hard disk drive

System board

Check Procedures 41

Table 2-1 POST Error Codes and Messages List

NOTE:

To diagnose a problem, first find the BIOS error
messages or codes in left column. If directed to a
check procedure, replace the FRU indicated in the
check procedure. If no check procedure is indicated,
the first Action/FRU listed in right column is the most
likely cause.

BIOS Error Codes,

Messages

1780
Fixed Disk Configuration

Error

1780
Fixed Disk 0 Error
1780
Fixed Disk Error
1781
Fixed Disk 1 Error
1782
Fixed Disk 2 Error
1783
Fixed Disk 3 Error

1800
No More IRQs available
1880
No More IRQs available

1801
No More Room for Option

ROM
1881
No More Room for Option

ROM

1802
No More I/O Space

Available
1882
No More I/O Space

Available

Action/FRU

Reconnect hard disk cables.
Hard disk drive
System board

Reconnect hard disk cables
Enter BIOS setting to load

default settings:

1. Proper speed for
processor. Speed should
be a multiple of the
original processor.

Hard disk drive
System board

Run Setup, verify PCI
Run Diagnostics
PCI adapter card

Check Setup
Run Diagnostics
Adapter Cards
Make sure BIOS is at latest

level
System board

Check Setup
Run Diagnostics
Adapter Cards
Make sure BIOS is at latest

level
System board

42 IBM Desktop System HMM

Table 2-1 POST Error Codes and Messages List

NOTE:

To diagnose a problem, first find the BIOS error
messages or codes in left column. If directed to a
check procedure, replace the FRU indicated in the
check procedure. If no check procedure is indicated,
the first Action/FRU listed in right column is the most
likely cause.

BIOS Error Codes,

Messages

1803
No More Memory

(above 1 MB) available
1883
No More Memory

(above 1 MB) available

1804
No More Memory

(below 1 MB) available
1884
No More Memory

(below 1 MB) available

1805
Checksum Error or 0 Size

Option ROM
1885
Checksum Error or 0 Size

Option ROM

1962
No Boot Device Found

2400
Display Adapter Error

2462
Video Configuration

Action/FRU

Check Setup
Run Diagnostics
Adapter Cards
Make sure BIOS is at latest

level
System board

Check Setup
Run Diagnostics
Adapter Cards
Make sure BIOS is at latest

level
System board

Check Setup
Run Diagnostics
Adapter Cards
Make sure BIOS is at latest

level
System board

Reconnect all the cables
Devices
Power supply
System board

Video adapter
System board

Optional video memory
System board
Monitor

Check Procedures 43

Table 2-1 POST Error Codes and Messages List

NOTE:

To diagnose a problem, first find the BIOS error
messages or codes in left column. If directed to a
check procedure, replace the FRU indicated in the
check procedure. If no check procedure is indicated,
the first Action/FRU listed in right column is the most
likely cause.

BIOS Error Codes,

Messages

5962
IDE CD-ROM Configuration

8601
Pointing Device Error

8603
Pointing Device has been
Removed

.

Action/FRU

CD-ROM drive connectors/
cables/jumpers
CD-ROM drive
Power supply
System board

Re-connect keyboard and
mouse.
Enter BIOS Setup and load
default settings.
USB mouse
USB keyboard
System board

Pointing device (mouse)
System board

44 IBM Desktop System HMM

Table 2-2 BIOS Error Beeps List

NOTE:

To diagnose a problem, first find the BIOS error
beeps in left column. If directed to a check
procedure, replace the FRU indicated in the check
procedure. If no check procedure is indicated, the
first Action/FRU listed in right column is the most
likely cause.

BIOS Error Beeps Action/FRU

1-1-3
CMOS Write/ Read Error

1-1-4
BIOS ROM Checksum

Error

1-2-1
Programmable Interval

Timer Test Error
1-2-2

DMA initialization Error

1-2-3
DMA Page Register Write/

Read Test Error
1-2-4

RAM Refresh Verification
Error

1-3-1
1st 64K RAM Test Error

Enter BIOS Setup and load
the default settings.

CMOS battery.
System board.

Enter BIOS Setup and load
the default settings.

CMOS battery.
System board.

Enter BIOS Setup and load
the default settings.

System board.
Enter BIOS Setup and load

the default settings.
System board.

Enter BIOS Setup and load
the default settings.

System board.
Enter BIOS Setup and load

the default settings.
System board.

Insert the memory modules
in the DIMM sockets
properly, then reboot the
system.

Memory module. See the
“Step 005” of “Memory” on
page 64 to replace memory
module.

System board

Check Procedures 45

Table 2-2 BIOS Error Beeps List

NOTE:

To diagnose a problem, first find the BIOS error
beeps in left column. If directed to a check
procedure, replace the FRU indicated in the check
procedure. If no check procedure is indicated, the
first Action/FRU listed in right column is the most
likely cause.

BIOS Error Beeps Action/FRU

1-3-2
1st 64K RAM Parity Test

Error

1-3-2
Wrong Data Gets From

DIMM’s SPD

Insert the memory modules
in the DIMM sockets
properly, then reboot the
system.

Memory module. See the
“Step 005” of “Memory” on
page 64 to replace memory
module.

System board
Insert the memory modules

in the DIMM sockets
properly, then reboot the
system.

DIMM.
System board.

1-3-2
Incorrect DRAM Type

2-1-1
Slave DMA Register Test In-

Progress or Error
2-1-2

Master DMA Register Test
In-Progress or Error

2-1-3
Master Interrupt Mask

Register Test Error
2-1-4

Slave Interrupt Mask
Register Test Failure

2-2-2
Keyboard Controller Test

Error
2-3-2

Screen Memory Test In­Progress or Error

DIMM

Hard disk drive
System board

Hard disk drive
System board

Hard disk drive
System board

Hard disk drive
System board

System board

Enter BIOS Setup and load
the default settings.

System board.

46 IBM Desktop System HMM

Table 2-2 BIOS Error Beeps List

NOTE:

To diagnose a problem, first find the BIOS error
beeps in left column. If directed to a check
procedure, replace the FRU indicated in the check
procedure. If no check procedure is indicated, the
first Action/FRU listed in right column is the most
likely cause.

BIOS Error Beeps Action/FRU

2-3-3
Screen Retrace Tests In-

Progress or Error
3-1-1

Timer Tick Interrupt Test
Error

3-1-2
Interval Timer Channel 2

Test Error
3-1-4

Time-Of-Day Clock Test
Error

3-2-4
Comparing CMOs Memory

Size Against Actual
3-3-1

Memory Size Mismatch
Occurred.

Enter BIOS Setup and load
the default settings.

System board.
Enter BIOS Setup and load

the default settings.
System board.

Enter BIOS Setup and load
the default settings.

System board.
Enter BIOS Setup and load

the default settings.
System board.

Enter BIOS Setup and load
the default settings.

System board.
Insert the memory modules

in the DIMM sockets
properly, then reboot the
system.

Memory module. See the
“Step 005” of “Memory” on
page 64 to replace memory
module.

System board

Check Procedures 47

Table 2-3 Error Symptoms List

NOTE:

To diagnose a problem, first find the error symptom
in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If
no check procedure is indicated, the first Action/
FRU listed in right column is the most likely cause.

Error Symptoms Action/FRU

Processor / Processor Fan

NOTE:

Processor fan does not run
but power supply fan runs.

Processor test failed. Processor.

NOTE:

Memory test failed. See “Memory” on page 64.

Incorrect memory size
shown or repeated during
POST.

Normally, the processor fan should be operative,
and the processor clock setting should be exactly
set to match its speed requirement before
diagnosing any processor problems.

Ensure that the system is
not in power saving mode
and the “Stop CPU clock in
sleep state” is not set to
Yes. See “Power
Management” on page 5.

With the system power on,
measure the voltage of
processor fan connector
FN1. Its reading should be
+12Vdc. See “System
Board Jumpers and
Connectors” on page 105.

Processor fan.
System board.

System board.

System Board and Memory

Ensure that the memory modules are installed
properly and the contact leads are clean before
diagnosing any system problems.

System board
Insert the memory modules

in the DIMM sockets
properly, then reboot the
system.

Memory module. See the
“Step 005” of “Memory” on
page 64 to replace memory
module.

System board.

48 IBM Desktop System HMM

Table 2-3 Error Symptoms List

NOTE:

To diagnose a problem, first find the error symptom
in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If
no check procedure is indicated, the first Action/
FRU listed in right column is the most likely cause.

Error Symptoms Action/FRU

System works but fails to
enter power saving mode
when the Power
Management Mode is set to
[Enabled], and power
saving timer set in BIOS has
elapsed.

System hangs before
system boot.

System hangs after system
boot.

Blinking cursor only; system
does not work.

Hard Disk Drive

NOTE:

Hard disk drive test failed. Enter BIOS Setup and Load

Ensure hard disk drive is configured correctly in
BIOS Setup, cable/jumper are set correctly before
diagnosing any hard disk drive problems.

(Continued)

Enter BIOS Setup and load
default settings.

In Windows 2000, check
settings in Power
Management Property of
Control Panel.

Reload software from
Recovery CD.

See “Index of Symptoms,
Messages, Error Codes, or
Beeps” on page 36.

See “Undetermined
Problems” on page 72

Execute a system test
(“Diagnostics/Run Normal
Test” in PC-Doctor
diagnostics program) and
set it to stop at “Halt on
Error” to see the potential
cause of the problem.

“Undetermined Problems”
on page 72.

See “Start” on page 31.
Diskette/IDE drive

connection/cables
Diskette/IDE disk drives
See “Undetermined

Problems” on page 72
System board

default settings.
Hard disk drive cable.
Hard disk drive.
System board.

Check Procedures 49

Table 2-3 Error Symptoms List

NOTE:

To diagnose a problem, first find the error symptom
in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If
no check procedure is indicated, the first Action/
FRU listed in right column is the most likely cause.

Error Symptoms Action/FRU

Hard disk drive format error. Enter BIOS Setup and Load

Hard disk drive write error. Enter BIOS Setup and Load

Hard disk drive LED fails to
light, but system operates
normally.

CD-ROM Drive

NOTE:

CD-ROM drive LED flashes
for more than 30 seconds
before LED shut off.

Software asks to reinstall
disc.

Software displays a reading
CD error.

CD-ROM drive LED doesn't
come on but works
normally.

Ensure CD-ROM drive is configured correctly in
BIOS Setup, cable/jumper are set correctly and its
laser beam is clean before diagnosing any
CD-ROM drive problems.

(Continued)

default settings.
Hard disk drive cable.
Hard disk drive.
System board.

default settings.
Hard disk drive.

With the system power on,
measure the voltage of hard
disk LED connector CNN1.
The reading should be:

HDD Idle/ Active

CNN1

pin-8 +5 Vdc / -­pin-7 +5 Vdc / 0
Vdc

See “System Board
Jumpers and Connectors”
on page 105.

Hard drive LED cable.

CD may have dirt or foreign
material on it. Check with a
known good disc.

CD is not inserted properly.
CD is damaged.

CD-ROM drive

50 IBM Desktop System HMM

Table 2-3 Error Symptoms List

NOTE:

To diagnose a problem, first find the error symptom
in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If
no check procedure is indicated, the first Action/
FRU listed in right column is the most likely cause.

Error Symptoms Action/FRU

CD-ROM drive cannot load
or eject when the system is
turned on and its eject
button is pressed and held.

CD-ROM drive does not
read and there are no error
codes or messages are
displayed.

CD-ROM drive can play
audio CD but no sound
output.

(Continued)

See “CD-ROM Emergency­exit <option 1>” on page 114
and “CD-ROM Emergency­exit <option 2>” on page
114 .

Disconnect all cables from
CD-ROM drive except
power cable, then press
eject button to try to unload
the disk.

CD-ROM drive power.
CD-ROM drive

CD may have dirt or foreign
material on it. Check with a
known good disc.

Ensure that the CD-ROM
driver is installed properly.
See “CD-ROM Drive” on
page 62.

CD-ROM drive.
Ensure that the headphone

jack of the CD-ROM has an
output, then check if the
audio cable from CD-ROM
drive to system board CN12
is connected properly. See
“System Board Jumpers
and Connectors” on page

105.
Turn up the sound volume.
Speaker power/connection/

cable.
CD-ROM drive.

Check Procedures 51

Table 2-3 Error Symptoms List

NOTE:

To diagnose a problem, first find the error symptom
in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If
no check procedure is indicated, the first Action/
FRU listed in right column is the most likely cause.

Error Symptoms Action/FRU

Real-Time Clock

Real-time clock is
inaccurate.

Video and Monitor

Video memory test failed.
Video adapter failed.

Display problem:

- Incorrect colors

- No high intensity

- Missing, broken, or
incorrect characters

- Blank monitor(dark)

- Blank monitor(bright)

- Distorted image

- Unreadable monitor

- Other monitor problems
Display changing colors. Monitor signal connection/

Display problem not listed
above (including blank or
illegible monitor).

USB Ports

Execute “Load BIOS Default Settings” in BIOS

NOTE:

Setup to confirm ports presence before diagnosing any
USB ports problems. Remove all external USB hubs.

(Continued)

Ensure that the information
in the Date and Time of
BIOS Setup is set correctly.
See “Date and Time” on
page 21.

Load default settings.
CMOS battery.
System board

Remove all non factory­installed cards.

Load default settings
(if screen is readable).

System board
Monitor signal connection/

cable.
Monitor
System board

cable
Monitor
System board

“Monitor” on page 70.
Load default settings

(if screen is readable).
System board

52 IBM Desktop System HMM

Table 2-3 Error Symptoms List

NOTE:

To diagnose a problem, first find the error symptom
in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If
no check procedure is indicated, the first Action/
FRU listed in right column is the most likely cause.

Error Symptoms Action/FRU

USB device failed. Ensure that the USB device

USB device problems. Refer to the service manual

Diagnostic Program

Diagnostics programs
cannot be executed.

Missing diagnostics file(s). Diagnostics diskette.

Keyboard

Some or all keys on
keyboard do not work.

Power Supply

Pressing power switch does
not turn off the system.
(Only unplug power cord
from electrical outlet can
turn off system.)

Pressing power switch does
not turn on system.

(Continued)

is properly installed.
Refer to the service manual

for the USB device.
USB device.
USB device cable.
System board.

for the USB device.

Reboot the system from the
diagnostics diskette.

Load default settings.
Diagnostics diskette.
Memory module.
System board.

“Keyboard” on page 65.

Power switch cable
assembly

“Power Supply” on page 68

Ensure the power override
switch (situated at the back
of the machine, just above
the connector for the power
cable) is not set to off.

Power switch cable
assembly.

Check Procedures 53

Table 2-3 Error Symptoms List

NOTE:

To diagnose a problem, first find the error symptom
in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If
no check procedure is indicated, the first Action/
FRU listed in right column is the most likely cause.

Error Symptoms Action/FRU

Executing software
shutdown from
Windows2000 Start menu
does not turn off the system.
(Only pressing power switch
can turn off the system).

No system power, or power
supply fan is not running.

Other Problems

Any other problems. See “Undetermined

(Continued)

Load default settings.
Reload software from

Recovery CD.

“Power Supply” on page 68
System board.

Problems” on page 72

54 IBM Desktop System HMM

Troubleshooting

Failing Parts or Assemblies:

generally help you trace a problem to one part or
assembly. The last step of the specific check
procedure you are using indicates that a part or
assembly is failing. You should inspect the part or
assembly before you decide to replace it. It might be
loose, dirty, or in need of a small repair. The check
procedures might lead you to two, or even three,
possible failing parts or assemblies. The parts that
might be failing are listed in order of the most
probable failure. Also, the FRU parts are defined as
replaced units and are not repaired in the field.

Measuring Voltages:

instruct you to measure voltages on cable plugs and
electronic board connectors. If you are asked to
measure voltage at several places on a plug or
connector, a chart next to or near the instruction
indicates the number of the plug or connector, the pin
numbers you should measure, the signal name, and
the correct voltage for the condition you are
measuring. Measure the voltage only at the pins
listed in the chart. Remember to set the meter on the
correct scale and to put the meter leads in the correct
position for the voltage you are asked to measure.

NOTE:

Use frame ground as the ground reference.

Attach the black (ground) lead of meter to
frame ground, except where specified
otherwise.

Some check procedure steps

The check procedures

Factory-Installed Storage Devices

Use this check procedure to test any factory-installed
drives.

ATTENTION:

settings in the Setup Utility (other than default
settings) on the computer you are servicing.
Running the Setup Utility might alter those
settings. Take note of the current settings and
verify that the customer settings are in place
when service is complete.

The customer may have customized

Check Procedures 55

NOTE: If you cannot access the hard disk drive or

load a CD from the CD-ROM drive, make sure
that the BIOS Setup Utility has the startup
sequence set with CD ROM and hard disk
drives.

001 - START

•

Insert the diagnostics program CD into the CD­ROM drive.

•

Power-off then power-on the system unit.

002 - DO ANY POST MESSAGES, ERROR
CODES, BEEPS, OR SYMPTOMS OCCUR? (YES,
READ AHEAD. NO, GO TO STEP 003)

•

Go to “Index of Symptoms, Messages, Error
Codes, or Beeps” on page 36.

•

End.

003 -

•

Select Utility from the menu.

•

Select and execute Tech Support Form from the
menu to generate a system configuration report.

•

Compare the system configuration list with the
actual devices installed in system.

NOTE: If necessary, remove the cover and visually

compare the devices installed in the system
unit to those shown in the Tech Support Form.

004 - IF THE NUMBER OF HARD DISK OR CD­ROM DRIVE IS NOT CORRECT, READ AHEAD; OR
GO TO STEP 005.

•

Check the cable installation of all disk drives.
(See “System Board Jumpers and Connectors” on
page 105)

- IDE Primary Channel Master and Slave Drives
should be connected to the system board con­nector CN8.

- IDE Secondary Channel Master and Slave
Drives should be connected to the system board
connector CN7.

56 IBM Desktop System HMM

NOTE: The CD-ROM drive that comes with system

unit should be configured as IDE Secondary
Channel Master device.

•

Check all power supply voltages, switch, and
jumper settings before you replace the system
board. (See “System Board Jumpers and
Connectors” on page 105.)

•

Check the power supply voltages if you have a
“system no-power” condition. See “Power Supply
Connectors and Voltages” on page 107.

•

Check the hard disk and CD-ROM drives jumper
settings. See “3.5-In. Hard Disk Drive Jumper
Settings” on page 110. Check the voltages of all
disk drive power connectors. See “Power Supply
Connectors and Voltages” on page 107.

•

Correct the parameter settings under IDE Drives in
the BIOS Setup. See “Hard Disk Drive” on page 4.

- In the BIOS Setup, check that the correct drive
size is set for the flagged drive shown in the
System Information. See “Viewing System Infor­mation, and Product Data” on page 15.

•

Enter BIOS Setup and load default settings.
If the problem remains, check the continuity on the
drive and the cable and replace it if necessary. If
that does not fix the problem, replace the system
board.

•

End.

005 -

•

Select Diagnostics from the PC-Doctor diagnostics
program main menu. Select and execute Fixed
Disks Test if you want to test hard disk drive.

•

Select CD-ROM/DVD Drive from the main
program menu to test the CD-ROM drive.

Check Procedures 57

- If an error or other symptom appears, go to “In­dex of Symptoms, Messages, Error Codes, or
Beeps” on page 36.

- If no error can be detected or the symptom is in­termittent, go to “Undetermined Problems” on
page 72 .

•

End.

58 IBM Desktop System HMM

Audio (Not Supported by Diagnostics Program)

IMPORTANT:

need to enter and exit Microsoft Windows 2000
several times. When instructed to select an
icon or button, double click on the item with the
mouse.

NOTE:

Windows 2000, see the user’s guide that
comes with the computer.
If an operating system other than Microsoft
Windows 2000 is installed, the program
screens and icons may differ from these
instructions.

001 - START

•

Power off the system unit.

•

Remove all adapter cards.

•

Connect a hard disk drive with pre-loaded
Windows 2000.

•

Power on the system unit.

•

Load default settings in setup (audio may be
disabled).

While performing this check, you may

For more information about using Microsoft

002 - DO ANY POST MESSAGES, ERROR
CODES, BEEPS, OR SYMPTOMS APPEAR? (YES,
READ AHEAD. NO, GO TO STEP 003)

•

Go to “Index of Symptoms, Messages, Error
Codes, or Beeps” on page 36.

•

End.

003 - DO ANY MESSAGES OR ERROR CODES
DISPLAY AFTER POST COMPLETES BUT
BEFORE MICROSOFT WINDOWS 2000 STARTS?
(YES, READ AHEAD. NO, GO TO STEP 004)

NOTE:

•

•

004 -

•

If POST does not complete, answer this

question “No.”
Ensure that Windows 2000 is properly installed.
End.

Perform the following under Windows 2000.

Check Procedures 59

NOTE: If an operating system other than Microsoft

Windows 2000 is installed, the program

screens and icons may differ from these

instructions.

1. Start Microsoft Windows 2000.

2. Select the Start icon.

3. Select Settings, then select Control Panel.

4. Select the Sound icon.

5. In the Sound window, select chimes from the
Names field. (To test other adapter card software,
select an action from a menu in that software.)

005 - IS THE PREVIEW BUTTON, OR ACTION IN
OTHER SOFTWARE, SELECTABLE ON THE
SCREEN (SHOWN IN BLACK AND NOT GRAY)?
(YES, GO TO STEP 006. NO, READ AHEAD.)

•

Ensure that Windows 2000 is properly installed.

•

Go to step 001.

006 -

•

Select the Preview button from the Sound window.

007 - DO YOU HEAR ANY SOUND FROM THE
SPEAKER? (YES, READ AHEAD. NO, GO TO
STEP 008.)

•

The audio feature is functioning normally. Click
Cancel to close the dialog box. Exit Microsoft
Windows 2000.

•

If the symptom remains or has changed, go to
“Index of Symptoms, Messages, Error Codes, or
Beeps” on page 36.

•

End.

60 IBM Desktop System HMM

008 -

•

Make sure that the volume control is not turned
low.

•

Make sure that the speaker and its adapter are not
damaged.

•

Make sure that the speaker is plugged in speak­out jack. See “System Board Jumpers and
Connectors” on page 105.

•

If the error cannot be resolved, replace the system
board.

•

End.

Check Procedures 61

CD-ROM Drive

IMPORTANT:

CD-ROM drive, use an external USB diskette
drive to load the diagnostics program from the
diskette.

001 - START

•

Insert the diagnostics diskette into the USB
diskette drive and ensure that there is no CD in the
CD-ROM drive.

•

Select
execute

002 - DO YOU SEE A MESSAGE “NO CD-ROM
DRIVE OR MSCDEX DEVICE DRIVER
INSTALLED.”? (YES, READ AHEAD. NO, GO TO

003.)

•

Exit the diagnostics program and power off the
system.

•

Check and ensure that the CD-ROM drive power
cable and audio and data cables are not damaged
and are connected properly.

•

Check and ensure that the CD-ROM drive driver is
loaded correctly.

•

Load default settings.

For the diagnostics procedure of

Interactive Tests

CD-ROM Test.

menu, then select and

003 - DO THE TESTS OF OPEN/CLOSE TRAY BY
DIAGNOSTICS PROGRAM AND BY DEPRESSING
CD-ROM DRIVE BUTTON WORK? (YES, READ
AHEAD. NO, GO TO STEP 006.)

•

Load a known good data CD into the CD-ROM
drive and try to read its content by typing DIR at
DOS prompt.

004 - CAN A CD BE READ FROM THE CD-ROM
DRIVE? (YES, THEN THE CD-ROM DRIVE
FUNCTIONS NORMALLY. NO, READ AHEAD.)

•

Try reading the CD with a known good CD-ROM
drive.

005 - IS THE CD STILL NOT READABLE? (YES,
READ AHEAD. NO, GO TO STEP 006.)

•

Replace system board.

62 IBM Desktop System HMM

•

End.

006 -

•

Replace CD-ROM drive.

•

End.

Check Procedures 63

Memory

001 - START

•

Power off the system unit.

•

Insert the diagnostics CD into the CD-ROM
drive.

•

Ensure that all DIMMs are installed correctly.

•

Power on the system unit.

•

Take note of any messages, error codes, or
symptoms.

002 - DO YOU RECEIVE POST MEMORY ERROR
MESSAGE? (YES, READ AHEAD. NO, GO TO
STEP 003)

•

Enter BIOS Setup Utility then reboot the system.
Take note of any messages, error codes, or
symptoms. If the error message remains, go to
step 005.

003 -

•

Follow the screen instructions to run the Memory
test.

004 - DOES THE MEMORY TEST COMPLETE
WITHOUT AN ERROR? (YES, READ AHEAD. NO,
GO TO STEP 005)

•

The system memory is now functioning correctly. If
you suspect an intermittent problem, run the
Memory test again.

•

End.

005 -

•

Replace the DIMM that the memory test calls out
and then re-run memory test.

•

If all DIMMs on the system board, have been
replaced and the problem remains, replace system
board.

•

Go to step 001.

64 IBM Desktop System HMM

Keyboard

001 - START

•

Power off system unit and ensure the keyboard
plug is connected properly.

002 -

•

Insert the diagnostics CD into the CD-ROM drive
and power on the system unit.

•

Select Interactive Tests menu, then execute
Keyboard test.

003 - DOES THE KEYBOARD FUNCTION
CORRECTLY? (YES, READ AHEAD. NO, GO TO
STEP 004.)

•

Keyboard is functioning normally.

•

End.

004 - ARE THERE ANY STUCK KEYS OR ANY
GRIME IN THE GAP OF KEYCAPS? (YES, READ
AHEAD. NO, GO TO STEP 005.)

•

Power off the system unit. Carefully remove the
grime and solve the stuck keys problem.

•

Go to step 001.

005 - ARE THERE ANY BROKEN PINS IN THE
KEYBOARD PLUG? (YES, GO TO STEP 007. NO,
READ AHEAD.)

•

Try with a known good keyboard.

006 - DOES THE ERROR SYMPTOM STILL
REMAIN? (YES, READ AHEAD. NO, GO TO STEP

007.)

•

Replace the system board.

•

End.

007 -

•

Replace the keyboard.

•

End.

Check Procedures 65

Mouse

001 - START

•

Make sure that the mouse ball turns freely.

•

Make sure that the mouse plug connects properly.

002 -

•

Power off the system unit.

•

Insert the diagnostics CD into the CD-ROM drive.

•

Power on the system unit.

•

Select Interactive Tests menu, then execute
Mouse test.

003 - DO YOU SEE THE MOUSE CURSOR IN THE
DIAGNOSTICS PROGRAM? (YES, READ AHEAD.
NO, GO TO STEP 011)

•

Test right (left) button and check if right (left) button
works.

004 - DOES THE MOUSE BUTTON WORK? (YES,
READ AHEAD. NO, GO TO STEP 007)

•

Test mouse cursor movement.

005 - DOES THE MOUSE MOVE SMOOTHLY AND
KEEP X AND Y COORDINATES CHANGED? (YES,
READ AHEAD. NO, GO TO STEP 006)

•

Mouse is functioned normally.

•

End.

006 -

•

Power off the system unit.

•

Open mouse bottom cover and clean track ball.

•

Go to step 002.

007

•

Power off the system unit.

•

Check the mouse plug.

66 IBM Desktop System HMM

008 - ARE THERE ANY BROKEN PINS IN THE
MOUSE PLUG? (YES, GO TO STEP 010. NO,
READ AHEAD.)

•

Try with a known good mouse.

009 - DO THE ERROR SYMPTOMS STILL
REMAIN? (YES, READ AHEAD. NO, GO TO STEP

010.)

•

Replace the system board.

•

End

010 -

•

Replace the mouse.

•

End.

011 -

•

Exit diagnostics program.

•

Ensure that the mouse driver is properly installed.

•

Go to step 002.

Check Procedures 67

Power Supply

001 - START

•

Power off (unplug) the system unit. Check the
power cord for continuity. Replace if necessary.

•

Check for the correct line voltage from the power
outlet, and verify that the voltage selector switch
(if present) is set to the correct voltage.

•

Power on the system unit.

002 - DOES THE POWER SUPPLY FAN RUN?
(YES, GO TO STEP 003. NO, GO TO STEP 004.)

003 - DOES THE SYSTEM FAIL TO SHUT OFF
WHEN THE ON/OFF SWITCH IS PRESSED? (YES,
READ AHEAD. NO, GO TO STEP 005.)

•

You might have a damaged on/off switch cable
assembly.

•

Disconnect the on/off switch cable assembly
connector from the power supply connector and
take an ohm reading.

•

Go to step 007.

004 -

•

Disconnect the power cord from the back of the
system unit.

•

Disconnect all power and switch cable connectors
from the system board and the power supply.

•

Disconnect the power connectors to all drives.

•

Connect any one of the power connector to system
board or drive as power load for driving up power
supply.

•

Reconnect the power cord and turn on the power
supply.

005 - DOES THE POWER SUPPLY FAN RUN?
(YES, READ AHEAD. NO, GO TO STEP 009)

•

With the system powered on and the power supply
fan running, check the voltages of the power
supply connectors for the system board and all
drive connectors, as shown in the following figures.

68 IBM Desktop System HMM