IBM ThinkPad 385XD Service Manual

IBM Mobile Systems

ThinkPad 380XD (2635)
ThinkPad 385XD (2635)

Hardware Maintenance Manual

May 1998

S10L-9623-00

IBM Mobile Systems

ThinkPad 380XD (2635)
ThinkPad 385XD (2635)

Hardware Maintenance Manual

May 1998

S10L-9623-00

IBM

Note

Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 123.

First Edition (May 1998)

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

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

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

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

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

 Copyright International Business Machines
Corporation 1998. 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.

About This Manual

This manual contains service and reference information for
IBM ThinkPad 380XD, 385XD (2635) products. Use this
manual along with the advanced diagnostic tests to
troubleshoot problems effectively.

The manual is divided into sections as follows:

 The Introduction section provides general information,

guidelines, and safety information required to service
computers.

 The product-specific section includes service,

reference, and product-specific parts information.

Important

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

Before servicing an IBM ThinkPad product, be sure to
review the safety information under “Safety Notices
(Multi-lingual Translations)” on page 5 and “Safety
Information” on page 12.

iii

Related Publications

The following product publications are available through
IBM or your IBM Authorized Dealer.

Publication Part, Form Number

Mobile Systems HMM
Volume 1: Laptop,
Notebook, Portable, and
ThinkPad Computers
(Models L40, CL57, N45,
N51, P70/P75, ThinkPad
300, 350, 500, 510, 710T,
Expansion Unit, Dock I,
Dock II)

Mobile Systems HMM
Volume 2: ThinkPad
Computers
(Models 340, 355, 360, 370,
700, 701, 720, 750, 755)

Mobile Systems HMM
Volume 3: ThinkPad
Computers
(Models 365, 380, 385, 560,
760, SelectaDock)

Mobile Systems HMM
Volume 4: ThinkPad
Computers
(Models 380, 385, 560, 760,

765)

30H2356, S82G-1501-01

30H2357, S82G-1502-03

84H8099, S82G-1503-05

05L1271, S05L-1270-01

iv IBM ThinkPad 380XD, 385XD

Related Diskettes

The following diskettes are available through IBM or your
IBM Authorized Dealer.

Diskette Part, Form Number

ThinkPad 300 (2615)
Advanced Diagnostics
Diskette

ThinkPad 350, 350C, 425,
425C (2618) Advanced
Diagnostics Diskette

ThinkPad 365 (2625)
Advanced Diagnostics
Diskette

ThinkPad 380/385 (2635)
Maintenance Diskette

ThinkPad 500 (2603)
Advanced Diagnostics
Diskette

ThinkPad 510 (2604)
Advanced Diagnostics
Diskette

ThinkPad 700 (9552)
Reference Diskette

ThinkPad 700C (9552)
Reference Diskette

ThinkPad 720/720C (9552)
Reference Diskette

ThinkPad Hardware
Maintenance Diskette
(for all Models 355, 360,
560, 750, 755, 760)

ThinkPad Dock I (3545) 71G4140, S71G-4140
Docking Station (3550) 42G2428, S42G-2428
Data/Fax Modem 61G1556, S61G-1556
FaxConcentrator/A 84F8540, S84F-8540

33G9361, S33G-9361

A211000, GA21-1000

76H7578, S30H-2498

06J0333, S06J-0333

71G3702, S71G-3702

83G8095, S83G-8095

42G2017, S42G-2017

42G2023, S42G-2023

61G1194, S61G-1194

78H5384, S78H-5384

v

vi IBM ThinkPad 380XD, 385XD

IBM ThinkPad 380XD, 385XD (2635)

Introduction . . . . . . . . . . . . . . . . . . . . 3

How to Use Error Messages .......... 4

How to Read POST Error Messages ...... 4

Safety Notices (Multi-lingual Translations) ..... 5

Safety Information . . . . . . . . . . . . . . . . 12

General Safety . . . . . . . . . . . . . . . . 12

Electrical Safety . . . . . . . . . . . . . . . . 13

Safety Inspection Guide ............ 14

Handling Electrostatic Discharge-Sensitive Devices 16

Grounding Requirements . . . . . . . . . . . . 16

Laser Compliance Statement ........... 17

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

Product Overview . . . . . . . . . . . . . . . . . 23

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

Audio Checkout . . . . . . . . . . . . . . . . 26

Diskette Drive Checkout ............ 26

Fan Checkout . . . . . . . . . . . . . . . . . 27

Keyboard or Auxiliary Input Device Checkout . . 27

Memory Checkout . . . . . . . . . . . . . . . 28

Power Systems Checkout ........... 29

Status Indicator Checkout ........... 32

System Board and CPU Card Checkout ..... 32

TrackPoint III Checkout ............ 32

Optional Device Checkout ............. 33

Port Replicator Checkout ............ 33

External Monitor Self-Test ........... 34

Power Management Features ........... 35

Symptom-to-FRU Index . . . . . . . . . . . . . . 38

Numeric Error Codes .............. 38

Beep Symptoms . . . . . . . . . . . . . . . . 43

Function-Related Symptoms . . . . . . . . . . 44

Indicator-Related Symptoms . . . . . . . . . . 44

Infrared-Related Symptoms . . . . . . . . . . . 45

Keyboard- or TrackPoint III-Related Symptoms . 45

LCD-Related Symptoms . . . . . . . . . . . . 46

Peripheral-Device-Related Symptoms . . . . . . 46

Power-Related Symptoms . . . . . . . . . . . 47

Other Symptoms . . . . . . . . . . . . . . . . 47

Intermittent Problems . . . . . . . . . . . . . 47

Undetermined Problems . . . . . . . . . . . . 48

Running the Diagnostics .............. 49

PC Card (PCMCIA) Slots Test ......... 50

Universal Serial Bus (USB) Test ........ 50

Displaying the Error Log ............ 50

Checking the Installed Devices List ....... 50

Diagnostic Error Codes ............ 52

Related Service Procedures ............ 55

Status Indicators . . . . . . . . . . . . . . . . 55

Password Combinations . . . . . . . . . . . . 56

Running a Low-Level Format .......... 57

Maintenance Diskette Download ........ 57

 Copyright IBM Corp. 1998 1

Fn Key Combinations ............. 57

FRU Removals and Replacements ......... 58

Important Notice . . . . . . . . . . . . . . . . 59

FRU Service Procedure ............ 60

Removal Reference . . . . . . . . . . . . . . 61

1010 DIMM Card and Backup Battery ..... 62

1020 Battery Pack . . . . . . . . . . . . . . 63

1030 Hard Disk Drive ............. 64

1040 Keyboard Unit . . . . . . . . . . . . . . 66

1050 Keyboard and Speaker .......... 69

1060 CD-ROM Drive and Diskette Drive Assembly 71

1070 Diskette Drive and CD-ROM Drive .... 72

1080 LCD Unit . . . . . . . . . . . . . . . . 76

1090 Fan Assembly, CPU Card, Thermal Rubber 79

1100 Upper Shield Case ........... 82

1110 Box Speaker and Microphone ...... 83

1120 DC/DC Card . . . . . . . . . . . . . . 85

1130 System Board and PC Card Slot ..... 87

1140 Battery Pack Latch ........... 90

2010 LCD Front Cover ............ 91

2020 LCD Panel . . . . . . . . . . . . . . . 93

2030 LCD Inverter Card ............ 97

2040 LCD Misc. Parts ............. 99

2050 LCD Cable . . . . . . . . . . . . . . 103

Locations . . . . . . . . . . . . . . . . . . . . 104

Front View . . . . . . . . . . . . . . . . . 104

Bottom View . . . . . . . . . . . . . . . . . 105

Rear View . . . . . . . . . . . . . . . . . . 106

Parts Listing . . . . . . . . . . . . . . . . . . 107

System Unit . . . . . . . . . . . . . . . . . 108

Hard Disk Drive, CD-ROM, Diskette Drive . . . 110

LCDFRU . . . . . . . . . . . . . . . . . . 111

Option Parts List ............... 118

Notices . . . . . . . . . . . . . . . . . . . . . 123

Trademarks . . . . . . . . . . . . . . . . . 123

2 IBM ThinkPad 380XD, 385XD

Introduction

Important

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

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

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

Montreal 514-938-3022
Toronto 905-316-4255
Vancouver 604-664-6464
Winnipeg 204-934-2735

FRU Replacement Strategy

Ensure that all diskette fixes are installed prior to replacing
any FRUs. And, use the following strategy to prevent
unnecessary FRU replacement and service expense:

 If you are instructed to replace a FRU and that

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

 Some computers have both a processor board and a

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

 If an adapter or device consists of more than one

FRU, an error code may be caused by any of the
FRUs. Before replacing the adapter or device,
remove the FRUs, one by one, to see if the
symptoms change. Replace only the FRU that
changed the symptoms.

Attention

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

The advanced diagnostic tests are intended to test
IBM products. Non-IBM products or modified options can
give false errors and invalid responses.

IBM ThinkPad 380XD, 385XD (2635) 3

only

Hard Disk Drive Replacement Strategy:

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

Attention

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

How to Use Error Messages

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

How to Read POST Error Messages

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

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

Shorter POST Messages

┌────┬────┬────┬────┐

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

│ │ │ │ │ │ │ │

Reserved ││││││Size (SCSI)

└────┴────┘ │ │ Slot Number (SCSI)

ID (SCSI)

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

Device Code │ Logical Unit Number (SCSI)

4 IBM ThinkPad 380XD, 385XD

Safety Notices (Multi-lingual
Translations)

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

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

Safety Notice 1

Before the computer is powered-on after FRU
replacement, make sure all screws, springs, or other
small parts are in place and are not left loose inside
the computer. Verify this by shaking the computer
and listening for rattling sounds. Metallic parts or
metal flakes can cause electrical shorts.

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

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

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

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

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

IBM ThinkPad 380XD, 385XD (2635) 5

Safety Notice 2

Some standby batteries contain a small amount of
nickel and cadmium. Do not disassemble it, recharge
it, throw it into fire or water, or short-circuit it. Dispose
of the battery as required by local ordinances or
regulations. Use only the battery in the appropriate
parts listing. Use of an incorrect battery can result in
ignition or explosion of the battery.

Certaines batteries de secours contiennent du nickel
et du cadmium. Ne les démontez pas, ne les
rechargez pas, ne les exposez ni au feu ni à l'eau.
Ne les mettez pas en court-circuit. Pour les mettre au
rebut, conformez-vous à la réglementation en vigueur.
Lorsque vous remplacez la pile de sauvegarde ou
celle de l'horloge temps réel, veillez à n'utiliser que les
modèles cités dans la liste de pièces détachées
adéquate. Une batterie ou une pile inappropriée
risque de prendre feu ou d'exploser.

Die Bereitschaftsbatterie, die sich unter dem
Diskettenlaufwerk befindet, kann geringe Mengen
Nickel und Cadmium enthalten. Sie darf nur durch die
Verkaufsstelle oder den IBM Kundendienst
ausgetauscht werden. Sie darf nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer oder
Wasser ausgesetzt werden. Die Batterie kann
schwere Verbrennungen oder Verätzungen
verursachen. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Bereitschafts- oder Systembatterie nur
Batterien des Typs verwenden, der in der
Ersatzteilliste aufgeführt ist. Der Einsatz falscher
Batterien kann zu Entzündung oder Explosion führen.

Alcune batterie di riserva contengono una piccola
quantità di nichel e cadmio. Non smontarle, ricaricarle,
gettarle nel fuoco o nell'acqua né cortocircuitarle.
Smaltirle secondo la normativa in vigore (DPR 915/82,
successive disposizioni e disposizioni locali). Quando
si sostituisce la batteria dell'RTC (real time clock) o la
batteria di supporto, utilizzare soltanto i tipi inseriti
nell'appropriato Catalogo parti. L'impiego di una
batteria non adatta potrebbe determinare l'incendio o
l'esplosione della batteria stessa.

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

6 IBM ThinkPad 380XD, 385XD

Safety Notice 3

The battery pack contains small amounts of nickel.
Do not disassemble it, throw it into fire or water, or
short-circuit it. Dispose of the battery pack as
required by local ordinances or regulations. Use only
the battery in the appropriate parts listing when
replacing the battery pack. Use of an incorrect battery
can result in ignition or explosion of the battery.

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

Akkus enthalten geringe Mengen von Nickel. Sie
dürfen nicht zerlegt, wiederaufgeladen,
kurzgeschlossen, oder Feuer oder Wasser ausgesetzt
werden. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist.
Der Einsatz falscher Batterien kann zu Entzündung
oder Explosion führen.

La batteria contiene piccole quantità di nichel. Non
smontarla, gettarla nel fuoco o nell'acqua né
cortocircuitarla. Smaltirla secondo la normativa in
vigore (DPR 915/82, successive disposizioni e
disposizioni locali). Quando si sostituisce la batteria,
utilizzare soltanto i tipi inseriti nell'appropriato
Catalogo parti. L'impiego di una batteria non adatta
potrebbe determinare l'incendio o l'esplosione della
batteria stessa.

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

IBM ThinkPad 380XD, 385XD (2635) 7

Safety Notice 4

The lithium battery can cause a fire, explosion, or
severe burn. Do not recharge it, remove its polarized
connector, disassemble it, heat it above 100°C
(212°F), incinerate it, or expose its cell contents to
water. Dispose of the battery as required by local
ordinances or regulations. Use only the battery in the
appropriate parts listing. Use of an incorrect battery
can result in ignition or explosion of the battery.

La pile de sauvegarde contient du lithium. Elle
présente des risques d'incendie, d'explosion ou de
brûlures graves. Ne la rechargez pas, ne retirez pas
son connecteur polarisé et ne la démontez pas. Ne
l'exposez pas à une temperature supérieure à 100°C,
ne la faites pas brûler et n'en exposez pas le contenu
à l'eau. Mettez la pile au rebut conformément à la
réglementation en vigueur. Une pile inappropriée
risque de prendre feu ou d'exploser.

Die Systembatterie ist eine Lithiumbatterie. Sie kann
sich entzünden, explodieren oder schwere
Verbrennungen hervorrufen. Batterien dieses Typs
dürfen nicht aufgeladen, zerlegt, über 100 C erhitzt
oder verbrannt werden. Auch darf ihr Inhalt nicht mit
Wasser in Verbindung gebracht oder der zur richtigen
Polung angebrachte Verbindungsstecker entfernt
werden. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist.
Der Einsatz falscher Batterien kann zu Entzündung
oder Explosion führen.

La batteria di supporto e una batteria al litio e puo
incendiarsi, esplodere o procurare gravi ustioni.
Evitare di ricaricarla, smontarne il connettore
polarizzato, smontarla, riscaldarla ad una temperatura
superiore ai 100 gradi centigradi, incendiarla o gettarla
in acqua. Smaltirla secondo la normativa in vigore
(DPR 915/82, successive disposizioni e disposizioni
locali). L'impiego di una batteria non adatta potrebbe
determinare l'incendio o l'esplosione della batteria
stessa.

La bateria de repuesto es una bateria de litio y puede
provocar incendios, explosiones o quemaduras
graves. No la recargue, ni quite el conector
polarizado, ni la desmonte, ni caliente por encima de
los 100°C (212°F), ni la incinere ni exponga el
contenido de sus celdas al agua. Deséchela tal como
dispone la normativa local.

8 IBM ThinkPad 380XD, 385XD

Safety Notice 5

If the LCD breaks and the fluid from inside the LCD
gets into your eyes or on your hands, immediately
wash the affected areas with water for at least 15
minutes. Seek medical care if any symptoms from the
fluid are present after washing.

Si le panneau d'affichage à cristaux liquides se brise
et que vous recevez dans les yeux ou sur les mains
une partie du fluide, rincez-les abondamment pendant
au moins quinze minutes. Consultez un médecin si
des symptômes persistent après le lavage.

Die Leuchtstoffröhre im LCD-Bildschirm enthält
Quecksilber. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Der
LCD-Bildschirm besteht aus Glas und kann
zerbrechen, wenn er unsachgemäß behandelt wird
oder der Computer auf den Boden fällt. Wenn der
Bildschirm beschädigt ist und die darin befindliche
Flüssigkeit in Kontakt mit Haut und Augen gerät,
sollten die betroffenen Stellen mindestens 15 Minuten
mit Wasser abgespült und bei Beschwerden
anschließend ein Arzt aufgesucht werden.

Nel caso che caso l'LCD si dovesse rompere ed il
liquido in esso contenuto entrasse in contatto con gli
occhi o le mani, lavare immediatamente le parti
interessate con acqua corrente per almeno 15 minuti;
poi consultare un medico se i sintomi dovessero
permanere.

Si la LCD se rompe y el fluido de su interior entra en
contacto con sus ojos o sus manos, lave
inmediatamente las áreas afectadas con agua durante
15 minutos como mínimo. Obtenga atención medica
si se presenta algún síntoma del fluido despues de
lavarse.

IBM ThinkPad 380XD, 385XD (2635) 9

Safety Notice 6

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

Afin d'éviter tout risque de choc électrique, ne retirez
pas le cache en plastique protégeant la partie
inférieure de la carte d'alimentation.

Aus Sicherheitsgründen die Kunststoffabdeckung, die
den unteren Teil der Spannungswandlerplatine umgibt,
nicht entfernen.

Per evitare scosse elettriche, non rimuovere la
copertura in plastica che avvolge la parte inferiore
della scheda invertitore.

Para evitar descargas, no quite la cubierta de plástico
que rodea la parte baja de la tarjeta invertida.

Safety Notice 7

Though main batteries have low voltage, a shorted or
grounded battery can produce enough current to burn
combustible materials or personnel.

Bien que le voltage des batteries principales soit peu
élevé, le court-circuit ou la mise à la masse d'une
batterie peut produire suffisamment de courant pour
brûler des matériaux combustibles ou causer des
brûlures corporelles graves.

Obwohl Hauptbatterien eine niedrige Spannung
haben, können sie doch bei Kurzschluß oder Erdung
genug Strom abgeben, um brennbare Materialien zu
entzünden oder Verletzungen bei Personen
hervorzurufen.

Sebbene le batterie di alimentazione siano a basso
voltaggio, una batteria in corto circuito o a massa può
fornire corrente sufficiente da bruciare materiali
combustibili o provocare ustioni ai tecnici di
manutenzione.

Aunque las baterías principales tienen un voltaje bajo,
una batería cortocircuitada o con contacto a tierra
puede producir la corriente suficiente como para
quemar material combustible o provocar quemaduras
en el personal.

10 IBM ThinkPad 380XD, 385XD

Safety Notice 8

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

Avant de retirer une unité remplaçable en clientèle,
mettez le système hors tension, débranchez tous les
cordons d'alimentation des socles de prise de courant,
retirez la batterie et déconnectez tous les cordons
d'interface.

Die Stromzufuhr muß abgeschaltet, alle Stromkabel
aus der Steckdose gezogen, der Akku entfernt und
alle Verbindungskabel abgenommen sein, bevor eine
FRU entfernt wird.

Prima di rimuovere qualsiasi FRU, spegnere il
sistema, scollegare dalle prese elettriche tutti i cavi di
alimentazione, rimuovere la batteria e poi scollegare i
cavi di interconnessione.

Antes de quitar una FRU, apague el sistema,
desenchufe todos los cables de las tomas de corriente
eléctrica, quite la batería y, a continuación,
desconecte cualquier cable de conexión entre
dispositivos.

IBM ThinkPad 380XD, 385XD (2635) 11

Safety Information

The following section contains the safety information that
you need to be familiar with before servicing an IBM
mobile computer.

General Safety

Follow these rules to ensure general safety:

 Observe good housekeeping in the area of the

machines during and after maintenance.

 When lifting any heavy object:

1. Ensure you can stand safely without slipping.

2. Distribute the weight of the object equally
between your feet.

3. Use a slow lifting force. Never move suddenly
or twist when you attempt to lift.

4. Lift by standing or by pushing up with your leg
muscles; this action removes the strain from the
muscles in your back.

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

 Do not perform any action that causes hazards to the

customer, or that makes the equipment unsafe.

 Before you start the machine, ensure that other

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

 Place removed covers and other parts in a safe

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

 Keep your tool case away from walk areas so that

other people will not trip over it.

 Do not wear loose clothing that can be trapped in the

moving parts of a machine. Ensure that your sleeves
are fastened or rolled up above your elbows. If your
hair is long, fasten it.

 Insert the ends of your necktie or scarf inside clothing

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

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

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

conductors.

 Wear safety glasses when you are: hammering,

drilling soldering, cutting wire, attaching springs, using
solvents, or working in any other conditions that might
be hazardous to your eyes.

 After service, reinstall all safety shields, guards,

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

 Reinstall all covers correctly before returning the

machine to the customer.

Do not attempt to lift any

12 IBM ThinkPad 380XD, 385XD

Electrical Safety

Observe the following rules when working on electrical
equipment.

Important

Use only approved tools and test equipment. Some
hand tools have handles covered with a soft material
that does not insulate you when working with live
electrical currents.

Many customers have, near their equipment, rubber
floor mats that contain small conductive fibers to
decrease electrostatic discharges. Do not use this
type of mat to protect yourself from electrical shock.

 Find the room emergency power-off (EPO) switch,

disconnecting switch, or electrical outlet. If an
electrical accident occurs, you can then operate the
switch or unplug the power cord quickly.

 Do not work alone under hazardous conditions or

near equipment that has hazardous voltages.

 Disconnect all power before:

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

 Before you start to work on the machine, unplug the

power cord. If you cannot unplug it, ask the customer
to power-off the wall box that supplies power to the
machine and to lock the wall box in the off position.

 If you need to work on a machine that has

electrical circuits, observe the following precautions:

– Ensure that another person, familiar with the

power-off controls, is near you.
Attention: Another person must be there to

switch off the power, if necessary.

– Use only one hand when working with

powered-on electrical equipment; keep the other
hand in your pocket or behind your back.

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

– When using testers, set the controls correctly

and use the approved probe leads and
accessories for that tester.

– Stand on suitable rubber mats (obtained locally,

if necessary) to insulate you from grounds such
as metal floor strips and machine frames.

Observe the special safety precautions when you
work with very high voltages; these instructions are in
the safety sections of maintenance information. Use
extreme care when measuring high voltages.

exposed

IBM ThinkPad 380XD, 385XD (2635)

13

 Regularly inspect and maintain your electrical hand

tools for safe operational condition.

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

Never assume

from a circuit. First,
powered-off.

 Always look carefully for possible hazards in your

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

 Do not touch live electrical circuits with the reflective

surface of a plastic dental mirror. The surface is
conductive; such touching can cause personal injury
and machine damage.

 Do not service the following parts

when they are removed from their normal operating
places in a machine:

– Power supply units

– Pumps

– Blowers and fans

– Motor generators
and similar units. (This practice ensures correct

grounding of the units.)

 If an electrical accident occurs:

– Use caution; do not become a victim

yourself.

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

that power has been disconnected

check

that it has been

with the power on

Safety Inspection Guide

The intent of this inspection guide is to assist you in
identifying potentially unsafe conditions on these products.
Each machine, as it was designed and built, had required
safety items installed to protect users and service
personnel from injury. This guide addresses only those
items. However, good judgment should be used to identify
potential safety hazards due to attachment of non-IBM
features or options not covered by this inspection guide.

If any unsafe conditions are present, you must determine
how serious the apparent hazard could be and whether
you can continue without first correcting the problem.

Consider these conditions and the safety hazards they
present:

 Electrical hazards, especially primary power (primary

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

 Explosive hazards, such as a damaged CRT face or

bulging capacitor

 Mechanical hazards, such as loose or missing

hardware

14 IBM ThinkPad 380XD, 385XD

The guide consists of a series of steps presented in a
checklist. Begin the checks with the power off, and the
power cord disconnected.

Checklist:

1. Check exterior covers for damage (loose, broken, or
sharp edges).

2. Power-off the computer. Disconnect the power cord.

3. Check the power cord for:

a. A third-wire ground connector in good condition.

Use a meter to measure third-wire ground
continuity for 0.1 ohm or less between the
external ground pin and frame ground.

b. The power cord should be the appropriate type

as specified in the parts listings.

c. Insulation must not be frayed or worn.

4. Remove the cover.

5. Check for any obvious non-IBM alterations. Use
good judgment as to the safety of any non-IBM
alterations.

6. Check inside the unit for any obvious unsafe
conditions, such as metal filings, contamination, water
or other liquids, or signs of fire or smoke damage.

7. Check for worn, frayed, or pinched cables.

8. Check that the power-supply cover fasteners (screws
or rivets) have not been removed or tampered with.

IBM ThinkPad 380XD, 385XD (2635) 15

Handling Electrostatic Discharge-Sensitive Devices

Any computer part containing transistors or integrated
circuits (ICs) should be considered sensitive to electrostatic
discharge (ESD). ESD damage can occur when there is a
difference in charge between objects. Protect against ESD
damage by equalizing the charge so that the machine, the
part, the work mat, and the person handling the part are all
at the same charge.

Notes

1. Use product-specific ESD procedures when they
exceed the requirements noted here.

2. Make sure that the ESD protective devices you
use have been certified (ISO 9000) as fully
effective.

When handling ESD-sensitive parts:

 Keep the parts in protective packages until they are

inserted into the product.

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

eliminate static on your body.

 Prevent the part from touching your clothing. Most

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

 Use the black side of a grounded work mat to provide

a static-free work surface. The mat is especially
useful when handling ESD-sensitive devices.

 Select a grounding system, such as those listed

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

Note

The use of a grounding system is desirable but
not required to protect against ESD damage.

– Attach the ESD ground clip to any frame ground,

ground braid, or green-wire ground.

– Use an ESD common ground or reference point

when working on a double-insulated or
battery-operated system. You can use coax or
connector-outside shells on these systems.

– Use the round ground-prong of the AC plug on

AC-operated computers.

Grounding Requirements

Electrical grounding of the computer is required for
operator safety and correct system function. Proper
grounding of the electrical outlet can be verified by a
certified electrician.

16 IBM ThinkPad 380XD, 385XD

Laser Compliance Statement

Some IBM Personal Computer models are equipped from
the factory with a CD-ROM drive. CD-ROM drives are
also sold separately as options. The CD-ROM drive is a
laser product. The CD-ROM drive is certified in the U.S. to
conform to the requirements of the Department of Health
and Human Services 21 Code of Federal Regulations
(DHHS 21 CFR) Subchapter J for Class 1 laser products.
Elsewhere, the drive is certified to conform to the
requirements of the International Electrotechnical
Commission (IEC) 825 and CENELEC EN 60 825 for
Class 1 laser products.

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

CAUTION:
Use of controls or adjustments or performance of

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

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

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

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

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

IBM ThinkPad 380XD, 385XD (2635) 17

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

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

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

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

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

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

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

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

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

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

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

18 IBM ThinkPad 380XD, 385XD

Read This First

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

Important Notes

 Only certified trained personnel should

service the computer.

 Read FRU service procedures before replacing

any FRUs.

 Be extremely careful during write operations

such as copying, saving, or formatting.

Drives in the computer that you are servicing
might have been rearranged or the drive start-up
sequence might have been altered. If you select
an incorrect drive, data or programs can be
overwritten.

 Replace FRUs only for the correct model.

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

 FRUs should not be replaced because of a

single, unreproducible failure. Single failures

can occur from a variety of reasons that have
nothing to do with a hardware problem, such as
cosmic radiation, electrostatic discharge, or
software errors. FRU replacement should be
considered only when a recurring problem exists.
If this is suspected, clear the error log and run
the test again. Do not replace any FRUs if log
errors do not reappear.

 Be careful not to replace a nondefective FRU.

How to Use Error Messages: Use the error

codes displayed on the screen to diagnose failures. If
more than one error code is displayed, begin the diagnosis
with the first error code. The cause of the first error code
can result in false error codes being displayed. If no error
code is displayed, see if the error symptom is listed in the
“Symptom-to-FRU Index” on page 38.

Port Replicator Problems: If you suspect a

problem with the Port Replicator, see “Port Replicator
Checkout” on page 33.

How to Diagnose Multiple FRUs: When the

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

IBM ThinkPad 380XD, 385XD (2635)

19

What to Do First: The service personnel must fill in

the following information in the parts exchange form or
parts return form that is attached to the returned FRU:

1. Name and phone number of service personnel

2. Date of service

3. Date when the part failed

4. Date of purchase

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

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

7. Failing FRU name and the part number

8. Machine type, model number, and serial number

9. Customer's name and address

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

Warranty Note: During the warranty period, the customer

may be responsible for repair costs if the computer
damage was caused by misuse, accident,
modification, unsuitable physical or operating
environment, or improper maintenance by the
customer. The following list provides some
common items that are not covered under warranty
and some symptoms that may indicate the system
was subjected to stresses beyond normal use:

The following is not covered under warranty:

 LCD panel cracked by applying excessive force

or by being dropped

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

broken pins, or broken connectors caused by
excessive force

 Damage caused by liquid spilled into the system
 Damage caused by improperly inserting a PC

card or installation of an incompatible card

 Damage caused by any foreign material in the

FDD

 Diskette drive damage caused by pressing the

diskette drive cover or inserting diskettes with
multiple labels

 Damaged or bent diskette eject button
 CD-ROM drive damage caused by shock from

excessive force, or by being dropped

 Fuses blown by attaching a nonsupported device
 Forgotten computer password (making the

computer unusable)

20 IBM ThinkPad 380XD, 385XD

The following symptoms might indicate damage
caused by nonwarranted activities:

 Missing parts may be a symptom of unauthorized

service or modification.

 HDD spindles can become noisy from being

subjected to excessive force or from being
dropped.

 I9990303 errors can be caused by exposure to

strong magnetic fields.

Disabling the Power-On Password:

 When only the power-on password is installed.

1. Turn off the computer.

2. Turn the computer upside down, loosen the
memory-slot cover screw .1/, and remove the
memory-slot cover .2/.

3. Short across the power-on password jumper
pads .3/.

3

1

4. Turn on the computer to clear the password, and
wait until the POST ends.

5. Reinstall the memory-slot cover, and turn the
computer right side up.

Verify that the password prompt does not appear.
To reactivate the password, set the password again.

IBM ThinkPad 380XD, 385XD (2635) 21

 When both the power-on password and the

supervisor password are set.

1. Turn off the computer.

2. Turn the computer upside down, loosen the
memory-slot cover screw .1/, remove the
memory-slot cover .2/.

3. Short the two password jumper pads on the
system board (see .3/ of the previous page).

4. Turn on the computer. After a few seconds, the
password prompt appears.

5. Enter the supervisor password. The
“Easy-setup main menu” appears.

6. Select Password and then Power on.A
rectangular box appears.

7. Enter the supervisor password and press the
Space bar once.

8. Press Enter twice.

9. Select Exit.

10. Select Restart in the “Easy-setup main menu”
and wait until the POST ends.

11. Reinstall the memory-slot cover, and turn the
computer right side up.

Verify that the password prompt does not appear.

To reactivate the password, set the password again.

Power Shutdown Switch: The power shutdown

switch resets the system regardless of the microcode
status and forces a power off. Use this push button to
power off when power is not completely off or when the
microcode is in a hung state.

22 IBM ThinkPad 380XD, 385XD