S37L-5153-01
Before using this information and the product it supports,
be sure to read the general information under “Read This
First” on page 19.
First Edition (March 1999)
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About This Manual
This manual contains service and reference information for
IBM ThinkPad 390E (2626) 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, refer-
ence, 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 4 and “Safety
Information” on page 11.
iii
Related Publications
The following product publications are available through
IBM or your IBM Authorized Dealer.
PublicationPart, 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
ivThinkPad 390E
Related Diskettes
The following diskettes are available through IBM or your
IBM Authorized Dealer.
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
Before Replacing Parts
Ensure that all diskette fixes are installed prior to
replacing any FRUs listed in this manual.
Use the following strategy to prevent unnecessary FRU
replacement and service expense:
If you are instructed to replace a FRU and that
does not correct the problem, reinstall the original
FRU before you continue.
Some computers have both a processor board and a
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.
Introduction
1
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.
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.
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.
2ThinkPad 390E
Device Code │ Logical Unit Number (SCSI)
Drive and Diskette Compatibility Matrix
The following table provides identification information for
3.5-inch drives.
Diskette
Drive
3.5-Inch - 1.44MB1.44 on the eject button
3.5-Inch - 2.88MB2.88 on the eject button
Identifying
Mark
The following table provides compatibility information for
3.5-inch diskettes and 3.5-inch diskette drives.
Diskette
Capacity
1.0MBRead/WriteRead/Write
2.0MBRead/WriteRead/Write
4.0MBNot CompatibleRead/Write
1.44MB
Drive
2.88MB
Drive
The following table provides identification information for
5.25-inch diskette drives.
Diskette
Drive
5.25-Inch - 360KB (External)Asterisk on bezel
5.25-Inch - 1.2MB (Internal)1.2 on the eject button
Identifying
Mark
The following table provides compatibility information for
5.25-inch diskettes and 5.25-inch diskette drives.
Diskette
Capacity
360KBRead/WriteRead/Write
1.2MBNot CompatibleRead/Write
360KB
Drive
1.2MB
Drive
Note: A 360KB diskette written to or formatted on a
1.2MB drive can be read reliably only on a 1.2MB
drive.
Introduction 3
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.
4ThinkPad 390E
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.
Introduction 5
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.
6ThinkPad 390E
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.
Introduction 7
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.
8ThinkPad 390E
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.
Introduction 9
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.
10ThinkPad 390E
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 conduc-
tors.
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
Introduction
11
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
12ThinkPad 390E
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 your-
self.
– 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 hard-
ware
Introduction
13
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.
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 batteryoperated 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.
Introduction 15
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 pro-
cedures 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
16ThinkPad 390E
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.
Introduction
17
18ThinkPad 390E
ThinkPad 390E Hardware
Maintenance Manual
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 the entire FRU service procedures before
replacing any FRUs.
Use new nylon-coated screws when you replace
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 startup sequence might have
been altered. If you select an incorrect drive, data or
programs might be overwritten.
Replace FRUs only for the correct model. When
you replace a FRU, make sure the model of the
machine and FRU part number are correct by referring to the FRU parts list.
A FRU should not be replaced because of a
single, unreproducible failure. Single failures can
occur for a variety of reasons that have nothing to do
with a hardware defect, such as: cosmic radiation,
electrostatic discharge, or software errors. FRU
replacement should be considered only when a recurring problem exists. 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 non-defective FRU.
What to Do First
The servicer must include the following in the parts
exchange form or parts return form that is attached to the
returned FRU:
1. Name and phone number of servicer
2. Date of service
3. Date when part failed
4. Date of purchase
5. Failure symptoms, error codes appearing on the
display, and beep symptoms
6. Procedure index and page number in which the failing
FRU was detected
ThinkPad 390E
19
7. Failing FRU name and part number
8. Machine type, model number and serial number
9. Customer's name and address
Before checking problems with the computer, determine
whether or not the damage applies to the warranty by
referring to the following:
Note for Warranty: During the warranty period, the customer may be responsible for repair costs if the computer
damage was caused by misuse, accident, modification,
unsuitable physical or operating environment, or improper
maintenance by the customer. The following list provides
some common items that are not covered under warranty
and some symptoms that may indicate that the system
was subjected to stresses beyond normal use:
The following is not covered under warranty:
LCD panel cracked by applying excessive force or
from being dropped
Scratched (cosmetic) parts
Cracked or broken plastic parts, broken latches,
broken pins, or broken connectors caused by excessive force
Damage caused by liquid spilled into the system
Damage caused by the improper insertion of a PC
Card or the installation of an incompatible card
Damage caused by foreign material in the FDD
Diskette drive damage caused by the diskette drive
cover being pressed or by the insertion of a diskette
with multiple labels
Damaged or bent diskette eject button
CD-ROM drive damage caused by excessive force,
shock, or from being dropped
Fuses blown by attachment of a nonsupported device
Forgotten computer password (making the computer
unusable)
The following symptoms might indicate damage caused by
by nonwarranted activities:
Missing parts might be a symptom of unauthorized
service or modification.
HDD spindles can become noisy from being sub-
jected to excessive force or from being dropped.
How to Disable the Password
There are three passwords used at a typical customer site:
the Setup password, the HDD password, and the Power
On password.
Power On password:
1. Power off the computer.
20ThinkPad 390E
2. Remove the battery pack and AC Adapter.
3. Remove the backup battery (RTC) for 20
minutes or use a screwdriver to touch the
backup battery (RTC) for 1 second.
4. Put back the backup battery (RTC).
5. Power on the computer and wait until POST
ends.
6. Verify that the password prompt does not
appear.
Supervisor and HDD passwords:
The Supervisor password and Hard Disk password
(Hard Disk1 and Hard Disk2) are security features
that are used to protect the system and the hard disk
drive data from unauthorized access. No overriding
capability is provided, so it cannot be replaced if they
are forgotten. If the customer forgets the Supervisor
password, the system board must be replaced. If the
customer forgets the Hard Disk password, the hard
disk drive must be replaced.
ThinkPad 390E
21
Product Overview
The following shows an overview of the system features of
the ThinkPad 390E computer.
FeatureDescription
Processor Intel** Mobile Pentium** II
Bus architecturePCI Bus
Memory2 DIMM slots, no memory on the
Headphone/line-out
Line-in
Microphone-in
Mouse/keyboard
Parallel
Serial
USB
RJ11
Video-out
Infrared transferIrDA 1.1
Internal modem56Kbps (depends on the model)
PC Card (PCMCIA)One Type III or two Type II
AC Adapter56-Watt type
PCI
CardBus, ZV port support
ThinkPad 390E23
Fn Key Combinations
The following table shows the Fn key and function key
combinations and their corresponding functions.
The Fn key works independently of the operating system.
The operating system obtains the status through the
system management interface to control the system.
Fn +Result
F2Fuel-Gauge display on and off
F3Standby mode
F4Suspend mode
F7Switch between the LCD, the external monitor,
F8Expand/shrink screen
F11Switch power mode
F12Hibernation mode
and both the LCD and external monitor
24ThinkPad 390E
Status Indicators
The system status LED indicators show the current computer status. The following shows the location of each indicator symbol and the meaning of each indicator.
SymbolColorMeaning
(1) Battery statusGreenEnough battery power
Blinking
orange
OrangeThe battery pack is
(2) Suspend
mode
(3) Drive in useOrangeData is being read from
(4) Numeric lockGreenThe numeric keypad on
GreenThe computer is in
Blinking
green
remains for operation.
The battery pack needs
to be charged
being charged.
suspend mode.
The computer is entering
suspend mode.
or written to the hard
disk drive, diskette drive,
or data is being read
from the CD-ROM drive.
Do not enter hibernation
mode or power off the
computer when this indicator is on.
the keyboard is enabled.
You enable or disable
the keypad by pressing
and holding the Shift
key, and pressing the
NumLk key. For details,
see the User's Reference.
ThinkPad 390E25
SymbolColorMeaning
(5) Caps lockGreenCaps Lock mode is
(6) Scroll lockGreenScroll Lock mode is
enabled. All alphabetic
characters
entered in capital letters
without the Shift key
being pressed. You
enable or disable the
Caps Lock mode by
pressing the Caps Lock
key.
enabled. The Arrow
keys can be used as
screen-scroll function
keys. The cursor cannot
be moved with the
Arrow keys.
(A-Z)
Not all
are
application programs
support this function.
You enable or disable
Scroll Lock mode by
pressing the ScrLk key.
(7) Power onGreenThe computer is opera-
tional. This indicator is
always on when the
computer is on and not
in suspend mode.
26ThinkPad 390E
Checkout Guide
Use the following procedure as a guide for computer problems. Besides the checkout tests described in this section,
there are other items you can test for using the PC Doctor
diagnostics program. See “PC Doctor System Diagnostics”
on page 51 for details.
Note: The diagnostic tests are intended to test only IBM
products. Non-IBM products, prototype cards, or
modified options can give false errors and invalid
system responses.
1. Obtain the failing symptoms in as much detail as possible.
2. Verify the symptoms by attempting to recreate the
failure by running the diagnostic test or by repeating
the same operation.
Note: To run the diagnostics, refer to “Running the
Diagnostics” on page 50
3. Use the following table with the verified symptom to
determine which page to go to. Search the symptoms
column and find the description that best matches
your symptom; then go to the page shown in the "Go
to" column.
Symptoms (Verified)Go to
Power failure. (The
power-on indicator does not
go on or stay on.)
POST does not complete.
No beeps or error
codes/messages are indicated.
POST beeps, but no error
codes are displayed.
POST detected an error and
displayed numeric error
codes.
The diagnostic test detected
an error and displayed a
FRU code.
Other symptoms (such as
LCD display problems).
Symptoms cannot be recreated (intermittent problems).
“Power System Checkout”
on page 33, then use table
in “Power-Related
Symptoms” on page 44.
“Symptom-to-FRU Index” on
page 39, then use table in
“No Beep Symptoms” on
page 43.
“Symptom-to-FRU Index” on
page 39.
“Symptom-to-FRU Index” on
page 39, then use table in
“Numeric Error Codes” on
page 40.
“Running the Diagnostics”
on page 50.
“Symptom-to-FRU Index” on
page 39.
Use the customer-reported
symptoms, and go to
“Symptom-to-FRU Index” on
page 39.
ThinkPad 390E27
Audio Checkout
Do as follows:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Interactive Tests.
3. Select Internal Speaker.
If no sound is played, replace the speaker or the
system board.
4. Select Stereo Speaker.
If no music is played, replace the speaker or the
system board.
Diskette Drive Checkout
Do the following to isolate the problem to a controller,
drive, or diskette. A scratch, write-enabled, non-defective,
high-density (2HD) diskette is required.
CAUTION:
Make sure that the diskette does not have more than
one label attached to it. Multiple labels can cause
damage to the drive or can cause the drive to fail.
Do the following to select the test device. See “Running
the Diagnostics” on page 50 for details.
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Diagnostics.
3. Select Diskette Drives.
4. Follow the instructions in the message window.
If an error occurs with the internal diskette drive, reseat the
connector on the system board.
If the error still remains:
1. Reseat the Combobay ASM.
2. Reseat the Diskette Drive (FDD ASM).
3. Replace the Diskette Drive (FDD ASM).
4. Replace the Combobay Interposer card ASM.
5. Replace the system board.
CD-ROM ASM Checkout
Do the following to isolate the problem to a controller,
drive, or CD-ROM. Make sure that the CD-ROM disc does
not have any label attached to it. The label can cause
damage to the drive or can cause the drive to fail.
Do the following to select the test device:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Interactive Tests.
28ThinkPad 390E
3. Select CD-ROM/DVD Test.
4. Follow the instructions in the message window.
If an error occurs, reseat the connector on the system
board.
If the error still remains:
1. Reseat the Combobay ASM.
2. Reseat the CD-ROM ASM.
3. Replace the CD-ROM ASM.
4. Replace the Combobay Interposer card ASM.
5. Replace the system board.
Fan ASM Checkout
To check the Fan ASM, do the following:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Diagnostics.
3. Select Other Devices.
4. Select Fan.
5. Follow the instructions in the message window.
ThinkPad 390E
29
Keyboard and Auxiliary Input Device
Checkout
Note: Remove the external keyboard if the internal key-
board is to be tested.
If the internal keyboard does not work or an unexpected
character appears, make sure that the flexible cable
extending from the keyboard is correctly seated in the connector.
If the keyboard cable connection is correct, run the Keyboard Test.
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Interactive Tests.
3. Select Keyboard.
4. Follow the instructions in the message window.
If the test detects a keyboard problem, do the following
one at a time to correct the problem. Do not replace a nondefective FRU.
1. Replace the keyboard.
2. Replace the system board.
The following auxiliary input devices are supported for this
computer:
Memory errors might stop system operation, show error
messages on the screen, or hang the system.
Use the following procedure to isolate memory problems:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Memory Test - Full and/or Memory Test -Quick.
3. Follow the instructions in the message window.
Note: Make sure that the DIMM is properly installed into
the connector. A loose connection can cause an
error.
System Programs in Flash Memory: System
setup programs are stored in the flash memory.
Flash Memory Update: The flash memory update
is required for the following conditions:
New versions of system programs
New features or options
ThinkPad 390E31
Modem Board Checkout
Do the following to isolate the problem to the system
internal modem:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Diagnostics.
3. Select Other Devices.
4. Run Modem Loopback Test and ModemDialtone/DTMF Test.
5. Follow the instructions in the message window.
6. If the test detects a modem problem, replace the
modem card.
32ThinkPad 390E
Power System Checkout
To verify the symptom of the problem power on the computer using each of the following power sources:
1. Remove the battery ASM.
2. Connect the AC Adapter and check that power is supplied.
3. Disconnect the AC Adapter and install the charged
battery ASM; then check that power is supplied by the
battery ASM.
If you suspect a power problem, refer to the appropriate
power supply check listed below:
“Checking the AC Adapter”
“Checking the Operational Charging” on page 34
“Checking the Battery ASM” on page 34
Checking the AC Adapter: You are here
because the computer fails only when the AC Adapter is
used:
If the power problem occurs only when the ThinkPad
Port Replicator with Advanced Etherjet Feature.
If the power-on indicator does not turn on, check the
power cord of the AC Adapter for correct continuity
and installation.
If the operational charge does not work, go to
“Checking the Operational Charging” on page 34.
Unplug the AC Adapter cable from the computer and
measure the output voltage at the plug of the AC Adapter
cable. See the following figure.
PinVoltage (V dc)
1+15.5 to +17.0
2Ground
If the voltage is not correct, replace the AC Adapter.
If the voltage is within the range, do the following:
Replace the DC-DC & BATT board.
Replace the system board.
If the problem is not corrected, go to “Undetermined
Problems” on page 47
Note: An audible noise from the AC Adapter does not
always indicate a defective adapter.
ThinkPad 390E33
Checking the Operational Charging: To
check operational charging, use a discharged battery pack
(Battery ASM) or a Battery ASM that has less than 50% of
the total power remaining when installed in the computer.
Perform operational charging. If the battery status indicator
does not turn on, remove the Battery ASM and let it return
to room temperature. Reinstall the Battery ASM.
If the charge indicator still does not turn on, replace the
Battery ASM. If the charge indicator still does not turn on,
replace the DC-DC & BATT board, then the system board.
Then reinstall the Battery ASM. If the reinstalled Battery
ASM is not charged, go to the next section.
Checking the Battery ASM: Battery ASM
charging will not start until the Fuel-Gauge shows that less
than 95% of the total power remains; with this condition,
the Battery ASM can charge to 100% of its capacity. This
protects the Battery ASM from being overcharged or
having a shortened life.
Do the following:
1. Power off the computer.
2. Remove the Battery ASM and measure the voltage
between battery terminals 1(+) and 7(-). See the following figure:
Note: Signal lines, not used in these steps, are used
for communications between the system and
the battery.
3. If the voltage is less than 10.6V (Li-Ion) or 9.6V
(NiMH), the Battery ASM has been discharged,
recharge the Battery ASM. If the voltage is still less
than 10.6V (Li-Ion) or 9.6V (NiMH), replace the
battery.
4. If the voltage is more than 10.6V (Li-Ion) or 9.6V
(NiMH), measure the resistance between battery terminals 5 and 7. The resistance must be 390 ohm
(Li-Ion) or 4 to 3K ohm. If the resistance is not
correct, replace the Battery ASM. If the resistance is
correct, replace the DC-DC & BATT board then the
system board.
34ThinkPad 390E
TrackPoint Checkout
If the external mouse is connected, the TrackPoint does
not work. In this case, please detach the external mouse to
check the TrackPoint.
If this does not correct the TrackPoint problem, continue
with the following.
After you use the TrackPoint, the pointer drifts on the
screen for a short time. This self-acting pointer movement
can occur when a slight, steady pressure is applied to the
TrackPoint pointer. This symptom is not a hardware
problem. No service actions are necessary if the pointer
movement stops ina short period of time.
If a click button problem or pointing stick problem occurs,
do the following:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Interactive Tests.
3. Select Mouse.
4. Follow the instructions in the message window.
If either the pointing stick or the click button does not work,
do the following actions one a time to correct the problem.
Do not replace a non-defective FRU.
1. Reseat the keyboard cables.
2. Replace the keyboard.
3. Replace the system board.
ThinkPad 390E
35
Power Management Features
Three power management modes are available in the computer system to reduce power consumption and to prolong
battery life.
Standby Mode: In standby mode, the following
occurs:
The LCD backlight turns off.
The audio amplifier turns off. (Fn+F3)
Events that cause the computer to enter standby mode:
Standby mode requested by the Fn key (Fn+F3).
The computer exits standby and resumes operation when
any key is pressed.
Suspend Mode: In suspend mode, the following
occurs:
The LCD is powered off.
The hard disk drive is powered off.
The CPU stops.
Events that cause the computer to enter suspend mode:
Suspend mode requested by the Fn key (Fn+F4).
The Lid is closed (BIOS Setup).
The specified time has elapsed.
Battery low occurs and hibernation conditions are
insufficient.
Note: When battery is low, the battery status indi-
cator blinks orange.
The computer is ejected from the ThinkPad Port
Replicator with Advanced Etherjet Feature (BIOS
Setup).
The UltraBay FX (Combobay) switch is pressed.
Notes:
1. In the IBM BIOS Setup Utility, the computer can be
set to suspend when lid is closed.
2. In the IBM BIOS Setup Utility, the computer can be
set to suspend when docked.
The following events cause the computer to resume operation from suspend mode:
The Lid is opened.
The real time clock alarm is signaled.
The ring indicator (RI) is signaled by the internal
modem or a PC Card device.
The Fn key is pressed.
Wake on LAN occurs.
Power switch is pressed.
36ThinkPad 390E
The computer also exits suspend mode when timer conditions are satisfied for entering hibernation mode.
Hibernation Mode: For Windows NT or OS/2
users:
A Windows NT or OS/2 user cannot create a hibernation
file in a Windows NT or OS/2 system that uses the
NTFS/HPFS format system. If you want to use hibernation
mode, you should reinstall Windows NT with a FAT format
system. Also, if boot manager is installed, the computer
cannot enter hibernation mode.
Note: Before using hibernation mode, you need a
hibernation file.
In hibernation mode, the following occurs:
The system status, RAM, VRAM, and setup data are
stored on the hard disk.
The system is powered off.
Notes:
1. In the ThinkPad Configuration program, the computer
can be set to suspend when docked.
2. The computer cannot enter hibernation mode when it
is attached to the ThinkPad Port Replicator with
Advanced Etherjet Feature.
Events that cause the computer to enter hibernation mode:
Hibernation mode requested by function key
(Fn+F12).
Timer conditions are satisfied in suspend mode when
hibernate by timer is enabled.
A critically low battery condition occurs.
The power switch is pressed. (BIOS Setup)
The compute exits hibernation mode and resumes operation when the power-on switch is pressed. When power is
turned on, the hibernation file in the boot record on the
hard disk drive is read and the system status is restored
from the hard disk drive.
The following events cause the computer to resume operation from hibernation mode.
The power switch is pressed.
The real time clock alarm is signaled.
Wake on LAN occurs.
How to Create the Hibernation Function:
follows:
Start the ThinkPad Configuration program.
Click on the Power Management icon.
Click on the Hibernation Options tab.
ThinkPad 390E
Do as
37
Click on Enable Hibernation.
Click on OK.
Note: If you change the memory size, you need to
recreate the hibernation file or partition. For
partition-based hibernation, use the hibernation
utility to delete the partition first before creating a
new one.
38ThinkPad 390E
Symptom-to-FRU Index
The Symptom-to-FRU Index lists the symptoms and errors
and the possible causes. The most likely cause is listed
first.
Note: Perform the FRU replacement or actions in the
sequence shown in the FRU/Action columns. If a
FRU replacement does not solve the problem, put
the original part back in the computer. Do not
replace a non-defective FRU.
This index can also be used to help you decide the next
possible FRUs to be replaced when servicing a computer.
Numeric error codes show the errors detected in POST or
system operation (runtime). In the following error codes, X
can be any number. If no codes are available, use narrative symptoms.
If the symptom is not listed, go to “Undetermined
Problems” on page 47.
Note: For IBM devices not supported by diagnostic codes
in this ThinkPad computer, see the manual for that
device.
ThinkPad 390E
39
Numeric Error Codes
The following is a list of the message that the BIOS can
display. Most of them occur during POST. Some of them
display information about a hardware device, e.g., the
amount of memory installed. Others may indicate a
problem with a device, such as the way it has been configured. Following the list are explanations of the messages
and remedies for reported problems.
If the system fails after you make changes in the Setup
menus, reset the computer, enter Setup and install Setup
defaults or correct the error.
Symptom/ErrorFRU/Action in Sequence
0200
Failure Fixed
Disk
0211
Stuck Key
0211
Keyboard
error
0212
Keyboard
Controller
Failed
0213
Keyboard
locked —
Unlock key
switch
0220
Monitor type
does not
match CMOS
— Run Setup
0230
Shadow RAM
Failed at
offset:nnnn
0231
System RAM
Failed at
offset:nnnn
0232
Extended
RAM Failed
at offset:nnnn
1. Reseat hard disk drive.
2. Load Setup Defaults in BIOS Setup
Utility.
3. Hard disk drive
4. System board
Go to “Keyboard and Auxiliary Input
Device Checkout” on page 30.
Go to “Keyboard and Auxiliary Input
Device Checkout” on page 30.
Go to “Keyboard and Auxiliary Input
Device Checkout” on page 30.
Unlock external keyboard.
Load Setup Defaults in BIOS Setup Utility.
1. BIOS ROM
2. System board
1. DIMM
2. System board
1. DIMM
2. System board
40ThinkPad 390E
Symptom/ErrorFRU/Action in Sequence
0250
System
battery is
dead —
Replace and
run SETUP
0251
System
CMOS
checksum
bad —
Default configuration
used
0260
System timer
error
0270
Real time
clock error
0280
Previous boot
incomplete —
Default configuration
used
0281
Memory size
found by
POST differed from
CMOS
02B0
Diskette drive
A error
02B2
Incorrect
Drive A type
— run
SETUP
02D0
System
cache error
— Cache disabled
02F0
CPU ID:
Replace backup battery (RTC) and run
BIOS Setup Utility to reconfigure the
system time, then reboot the system.
1. Backup battery (RTC)
2. Run BIOS Setup Utility to reconfigure
the system, then reboot the system.
1. Backtup battery (RTC)
2. Run BIOS Setup Utility to reconfigure
the system, then reboot the system.
3. System board
1. Backtup battery (RTC)
2. Run BIOS Setup Utility to reconfigure
the system, then reboot the system.
3. System board
1. Load Setup Defaults in the BIOS
Setup Utility.
2. Backup battery (RTC)
3. System board
1. Load Setup Defaults in the BIOS
Setup Utility.
2. DIMM
3. System board
1. Check that the drive is defined with
the proper diskette type in BIOS
Setup Utility.
2. Go to “Diskette Drive Checkout” on
page 28.
1. Check that the drive is defined with
the proper diskette type in BIOS
Setup Utility.
2. Go to “Diskette Drive Checkout” on
page 28.
1. CPU card
2. System board
1. CPU card
2. System board
ThinkPad 390E41
Symptom/ErrorFRU/Action in Sequence
02F5
DMA Test
Failed
02F6
Software NMI
Failed
02F7
Fail-Safe
Timer NMI
Failed
1. DIMM
2. CPU card
3. System board
1. DIMM
2. CPU card
3. System board
1. DIMM
2. CPU card
3. System board
42ThinkPad 390E
Error Messages
Symptom/ErrorFRU/Action in Sequence
Device
Address Conflict
Allocation
Error for:
device
Failing Bits:
nnnn
Invalid
System Configuration
Data
I/O device
IRQ conflict
Operating
system not
found
Critical
battery low
1. Load Setup Defaults in BIOS Setup
Utility.
2. Backup battery (RTC)
3. System board
1. Load Setup Defaults in BIOS Setup
Utility.
2. Backup battery (RTC)
3. System board
1. DIMM
2. BIOS ROM
3. System board
1. BIOS ROM
2. System board
1. Load Setup Defaults in BIOS Setup
Utility.
2. Backup battery (RTC)
3. System board
1. Enter BIOS Setup Utility and see if
the hard disk drive and diskette drive
A: are properly identified.
2. Diskette drive (FDD ASM)
3. Hard disk drive
4. System board
Save your work; then connect the AC
Adapter to the computer to recharge the
battery.
No Beep Symptoms
Symptom/ErrorFRU/Action in Sequence
No beep, power-on
indicator on, LCD
blank, no POST
No beep, power-on
indicator off, LCD
blank during POST
No beep, power-on
indicator on, LCD
blank during POST
ThinkPad 390E43
Ensure every connector is
connected tightly and correctly.
DIMM
Reseat CPU card.
CPU card
System board
Battery ASM
AC Adapter
DC-DC & BATT board ASM
System board
Reseat DIMM.
CPU card
System board
Symptom/ErrorFRU/Action in Sequence
No beep during
POST but system
runs correctly.
Speaker
LCD-Related Symptoms
Symptom/ErrorFRU/Action in Sequence
LCD backlight not
working
LCD too dark
LCD brightness
cannot be adjusted
LCD contrast cannot
be adjusted
LCD screen unread-
able
Character missing
pels
Screen abnormal
Wrong color dis-
played
LCD has extra hori-
zontal or vertical lines
displayed.
1. Reseat the LCD connector.
2. Check the LCD inverter ID
3. LCD FPC ASM
4. LCD inverter
5. LCD
6. System board
1. Reseat the LCD connector.
2. Check the LCD inverter ID
3. LCD FPC ASM
4. LCD inverter
5. LCD
6. System board
1. Check the LCD inverter ID
2. LCD FPC ASM
3. LCD inverter
4. LCD
5. System board
Keyboard-Related Symptoms
Symptom/ErrorFRU/Action in Sequence
Keyboard (one or
more keys) doesn't
work.
1. Reseat the keyboard cable.
2. Keyboard
3. System board
Indicator-Related Symptoms
Symptom/ErrorFRU/Action in Sequence
Indicator incorrectly
remains off or on, but
system runs correctly.
1. Reseat the LED board.
2. LED board
3. System board
Power-Related Symptoms
Symptom/ErrorFRU/Action in Sequence
Power shuts down
during operation.
44ThinkPad 390E
1. Battery
2. AC Adapter
3. DC/DC & Charger board ASM
4. System board
Symptom/ErrorFRU/Action in Sequence
The system will not
power on.
The system will not
power off.
Battery can't be
charged.
1. Battery ASM
2. AC Adapter
3. DC/DC & Charger board ASM
4. System board
1. Press and hold the power
switch for more than 4
seconds
Note: If you cannot find a symptom or an error in this list
and the problem remains, see “Undetermined
Problems” on page 47.
Intermittent Problems
Intermittent system hang problems can be caused by a
variety of reasons that have nothing to do with a hardware
defect, such as cosmic radiation, electronic discharge, or
software errors. FRU replacement should be considered
only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1. Run the advanced diagnostic test for the system
board in loop mode at least 10 times.
2. If no error is detected, do not replace any FRUs.
46ThinkPad 390E
3. If any error is detected, replace the FRU shown by
the FRU code.. Rerun the test to verify that no more
errors exist.
Undetermined Problems
You are here because the diagnostic tests did not identify
which adapter or device failed, which installed devices are
incorrect, whether a short circuit is suspected, or whether
the system is inoperative. Follow these procedures to
isolate the failing FRU (do not isolate nondefective FRUs).
Verify that the power supply being used at the time of the
failure is operating correctly. (See “Power System
Checkout” on page 33).
1. Power off the computer.
2. Visually check them for damage. If any problems are
found, replace the FRU.
3. Remove or disconnect all of the following devices:
a. Non-IBM devices
b. Devices attached to the ThinkPad Port
Replicator with Advanced Etherjet Feature
c. Printer, mouse, and other external devices
d. Battery ASM
e. Hard disk drive
f. DIMM
g. CD-ROM and Diskette Drive (FDD ASM) in the
Combobay (UltraBay FX)
h. PC Cards (PCMCIA)
4. Power on the computer.
5. Determine if the problem has changed.
6. If the problem does not recur, reconnect the removed
devices one at a time until you find the failing FRU.
7. If the problem remains, replace the following FRUs
one at a time. Do not replace a non-defective FRU.
a. System board
b. LCD panel ASM
c. CPU card
ThinkPad 390E
47
CE Utility Program Diskette
Note: You can download the CE Utility Program Diskette
from the IBM website.
Setting the LCD Panel ID
There is an EEPROM in the inverter which stores its supported LCD type ID code. If you replace a LCD with one of
a different brand or use a new inverter, the ID information
in the inverter EEPROM should be updated.
Follow the steps below to set the LCD Panel ID:
1. Boot from the Utility Program Diskette.
2. Select LCD Panel ID Utility from PC DOS 7.0
Startup Menu.
3. Follow the instructions on the screen to read the
current or to set a new LCD Panel ID code.
Note: When you set a new LCD Panel ID and the
new LCD is not yet enabled (to function),
connect an external CRT to see the program
execution process.
Attention: Make sure the new ID code you choose
corresponds to the LCD brand and type. If you write a
wrong ID into the inverter, just reboot and re-execute
the program and input the correct ID code.
4. Restart the computer — the new LCD should work
normally.
Note: If the LCD cannot display after changing the ID
code, make sure you write the correct ID code or
try reconnecting the LCD FPC cable connectors.
Setting the Thermal Sensor
The system is equipped with sensors to protect against
system overheating. By setting the system and processor
thermal thresholds, the system can turn on the cooling Fan
ASM or shut down automatically when the temperature
reaches the defined threshold parameters.
System experiencing frequent auto sensor shutdown may
need to reset the thermal sensor threshold and execute
the Fan ASM test to ensure the normal operation of the
cooling Fan ASM (refer to “Fan ASM Checkout” on
page 29).
Follow the steps below to set the thermal threshold:
1. Boot from the Utility Program Diskette.
2. Select Thermal Sensor Utility from PC DOS 7.0
Startup menu, then press F4.
48ThinkPad 390E
Writing the RFID Data
The EEPROM on the system board contains the system
unit serial number and the system board serial number.
When you replace the system board, restore the system
unit serial number using the RFID Utility in the ThinkPad
CE Utility Diskette. The serial number label is attached to
the computer.
This utility allows you to
add S/N data to the EEPROM (option 1)
read S/N data from the EEPROM (option 2)
delete S/N data from the EEPROM (option 3)
Follow the instructions on the screen.
Flash UUID
The EEPROM on the system board contains the Universal
Unique ID (UUID) — that is, for Microsoft or Internet use.
When you replace the system board using the Flash UUID
Utility in the ThinkPad CE Utility Diskette. The UUID utility
will automatically assign the UUID via Windows.
ThinkPad 390E
49
Running the Diagnostics
PC Doctor for DOS is used to perform diagnostics on the
ThinkPad 390E.
50ThinkPad 390E
PC Doctor System Diagnostics
Note: Some test items require tools as shown below:
FDD: Erasable 2HD diskette
Parallel: Wrap plug (P/N: 72X8546)
Serial: Wrap plug (P/N: 72X8546)
PCMCIA: PC test card (P/N: 35G4703)
CD-ROM: Any data and audio CDs
ThinkPad 390E PC Doctor for DOS Diskettes
1 and 2 (available from the website)
ThinkPad 390E CE Utility Diskette (available
from the website)
To run PC Doctor:
1. Shutdown the computer.
2. Insert the PC Doctor for DOS diskette #1 into the
diskette drive.
3. Turn on the computer.
4. Select the correct model name and test type:
Option 1: TP-390E without audio
Option 2: TP-390E with audio
and press Enter.
5. When prompted, remove the diskette from the
diskette drive; then insert the PC Doctor for DOS
diskette #2 into the diskette drive and press any key.
The PC Doctor for DOS diagnostics program screen
appears.
To use PC Doctor:
1. Press the left and right arrow keys to move around
the main menu. Press Enter to enable the highlighted
option. The main options are:
Reseat keyboard connector
Keyboard
System board
58ThinkPad 390E
Error Code 304-1 to 304-199
Error CodeTest(s)Message
304«1BATTERYNo battery installed
No battery detected
304«199BATTERYGeneral battery failure
FRU/Action in Sequence:
Battery pack
DC-DC & BATT board ASM
System board
Error Code 415-1 to 415-250
Error CodeTest(s)Message
415-1MODEMPNPISA modem detected
415-250COM/ModemModem ATZ
FRU/Action in Sequence:
Reseat Modem card
Modem card
System board
but not enabled
PCI modem detected but
not enabled
Modem not detected
No dial tone detected
ThinkPad 390E59
FRU Removals and Replacements
This section contains information about removals and
replacements.
Do not damage any parts. Only certified and trained
personnel should service the computer.
The arrows in this section show the direction of move-
ment to remove a FRU, or to turn a screw to release
the FRU. The arrows are marked in numeric order, in
square callout, to show the correct sequence of
removal.
When other FRUs must be removed before the failing
FRU is removed, they are listed at the top of the
page.
To replace a FRU, reverse the removal procedure
and follow any notes that pertain to replacement.
When replacing a FRU, use the correct screw size, as
shown in the procedures.
Safety Notice 1: Translation on page 4
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 short circuits.
Safety Notice 3: Translation on page 6
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.
Safety Notice 8: Translation on page 10
Before removing any FRU, power-off the computer,
unplug all power cords from electrical outlets, remove
the battery pack, and then disconnect any interconnecting cables.
An electrostatic discharge (ESD) strap (P/N 6405959) must
be used to establish personal grounding.
FRU Service Procedures
Review the following procedures before replacing any
FRU.
60ThinkPad 390E
LCD FRU Replacement Notice: The TFT LCD
for the notebook computer contains over 2,359,296 thinfilm transistors (TFTs). A small number of missing, discolored, or lighted dots (on all the time) is characteristic of
TFT LCD technology, but excessive pixel problems can
cause viewing concerns. The LCD should be replaced if
the number of missing, discolored, or lighted dots in any
background is:
SVGA (12.1"): 5 or more bright dots, 5 or more dark
dots, or a total of 9 or more bright and dark dots
XGA (13.3"/14.1"): 8 or more bright dots, 8 or more
dark dots, or a total of 9 or more bright and dark dots
Replacing the system Board: When you
replace the system board, restore the system unit serial
number using the RFID Utility and reassign the UUID using
the Flash UUID Utility in the ThinkPad 390E CE Utility
Diskette. See “Writing the RFID Data” on page 49 and
“Flash UUID” on page 49 respectively.
Note: Do not power off the computer while restoring the
RFID.
Screw Notices: When you service this machine, do
the following,
Keep the screw kit (P/N 12J0808) in your tool bag.
Always use new screws. Plastic-coated screws
cannot be reused.
Use a torque screwdriver if possible.
Screw Tightening Information p.Loose screws
can cause a reliability problem. The IBM ThinkPad
compute addresses this problem with plastic-coated
screws. Tighten screws as follows,
Plastic to plasticTurn an additional
90 degrees after
the screw head
touches the
surface of the
plastic part.
Logic card to plasticTurn an additional
180 degrees after
the screw head
touches the
surface of the logic
card.
Torque driverIf you have a
torque driver, refer
to the torque
instructions with
each step.
ThinkPad 390E
61
Battery ASM
To remove the Battery ASM, press the latch to release,
then pull out the Battery ASM.
Reverse the steps described above when installing a new
battery pack.
62ThinkPad 390E
Hard Disk Drive
Warning
Do not drop or apply any shock to the hard disk drive.
The hard disk drive is sensitive to physical shock.
Incorrect handling can cause damage and permanent
loss of data on the drive.
Before removing the drive, have the user make a
backup copy of all the information on the drive if possible.
Never remove the drive while the system is operating
or is in suspend mode.
To remove the hard disk drive:
1. Use a coin to unscrew the hard disk drive screw.
Note: The screw cannot be removed from the cover.
2. Gently pull out the cover of the hard disk drive
module.
3. Carefully slide out the hard disk drive module to
remove.
ThinkPad 390E63
Combo Bay
To remove the Combo Bay, press and hold the lock to
release, then slide out the Combo Bay module to remove.
Diskette Drive (FDD ASM)
To remove the Diskette Drive (FDD ASM):
1. Remove the four screws securing the Diskettte Drive
(FDD ASM) as shown.
2. Disconnect the Diskette Drive (FDD ASM) cable from
the connector.
3. Slide out the Diskette Drive (FDD ASM) to remove.
Step
1M2.5 x 3.5L
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
(3)
Head &
ColorTorque
Flat head,
black
1.6 kgf-cm
64ThinkPad 390E
CD-ROM ASM
To remove the CD-ROM ASM:
1. Remove the four screws securing the CD-ROM ASM.
2. Carefully slide out the CD-ROM ASM to remove.
Step
1M2.5x 4L (4)Flat head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
1.6 kgf-cm
silver
ThinkPad 390E65
Combo Bay FPC
To remove the Combo Bay FPC:
1. Remove the two screws securing the Combo Bay
FPC.
2. Carefully disconnect the Combo Bay FPC from the
connector.
Step
1M2.5x 3.5L
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
(2)
Head &
ColorTorque
Pan head,
black
1.6 kgf-cm
66ThinkPad 390E
Hard Disk Adapter Combo Bay ASM
To remove the second hard disk drive from the hard disk
drive adapter:
1. Remove the two screws of the Combo Bay adapter.
2. Slide the hard disk drive out and up to remove.
Step
1M3 x 5L (2)Pan head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
1.6 kgf-cm
black
ThinkPad 390E67
Modem Card
“Battery ASM” on page 62
To remove the modem card:
1. Use a flat-bladed screwdriver to remove the screw on
the modem door.
2. Carefully release the latches on both sides of the
modem card.
3. Gently pull out the cable from the connector to
remove the modem card.
Step
1M2 x 18L (1)Pan head,
Note: The screws do not separate from the modem board
Size (Quantity)
cover.
Head &
ColorTorque
2.0kgf-cm
black
68ThinkPad 390E
Backup Battery (RTC)
“Battery ASM” on page 62
“Modem Card” on page 68
Safety Notice 4: Translation on page 7
The backup battery is a lithium battery and can cause
a fire, an explosion, or severe burns. 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 of an incorrect
battery can result in ignition or explosion of the
battery. Replacement batteries can be ordered from
IBM or IBM Authorized Dealers.
Use your thumb first to pull out the backup battery (RTC).
ThinkPad 390E69
Keyboard
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
To remove the keyboard:
1. Use a flat-bladed screwdriver to release the latches to
lift the middle cover away.
2. Remove the two screws securing the keyboard.
Step
3M2 x 4L (2)Flat head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
1.6 kgf-cm
silver
3. Lift the keyboard up to expose the keyboard connector.
70ThinkPad 390E
4. Use a flat-bladed screwdriver to release the cable
from the connector.
5. Remove the keyboard from the lower case.
ThinkPad 390E71
LED Board
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Keyboard” on page 70
To remove the LED board:
1. Remove the screw securing the LED board then disconnect the LED cable from the connector.
2. Lift the LED board.
Step
2M2 x 4L (1)Flat head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
2.0 kgf-cm
silver
72ThinkPad 390E
Upper Heatsink
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Keyboard” on page 70
Step
1M2.5 x 18L
2M2 x 18L (3)Pan head,
3M2 x 4L (4)Flat head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
(3)
Head &
ColorTorque
Pan head,
black
black
silver
2.0 kgf-cm
2.0 kgf-cm
1.6 kgf-cm
ThinkPad 390E73
PCMCIA Slots
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Keyboard” on page 70
“Upper Heatsink” on page 73
To remove the PCMCIA slots:
1. Remove the three screws securing the PCMCIA slot
board.
Step
1M2 x 18L (3)Pan head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
2.0 kgf-cm
black
2. Use a flat-bladed screwdriver to disconnect the
PCMCIA card from the connector.
3. Carefully remove the PCMCIA card.
74ThinkPad 390E
CAUTION:
When reassembling this section of the machine, the
upper heatsink must be reassembled first before the
PCMCIA slots.
CPU Board
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Keyboard” on page 70
Use a stick to remove the CPU board.
ThinkPad 390E75
LCD Panel ASM
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Keyboard” on page 70
To remove the LCD Panel ASM:
1. Remove the two screws securing the LCD FPC cable.
2. Remove the LCD FPC cable.
3. Disconnect the LCD FPC cable from the lower case
(12.1").
Disconnect the LCD FPC cable and LVDS board
(13.3" and 14.1").
4. Turn the notebook over; then remove four screws
securing the LCD Panel ASM as shown.
5. Pull out the LCD Panel ASM.
76ThinkPad 390E
Step
2M2.5 x 10L
2M2.5 x 18L
3M2.5 x 6L (4)Flat head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
(1)
M2 x 4L (1)
(1)
M2 x 10L (1)
Head &
ColorTorque
Pan head,
silver
Pan head,
black
Pan head,
silver
Pan head,
silver
black
12.1"L 1.6
kgf«cm
12.1"R
1.6kgf-cm
13.3" and
14.1"
L:1.6 kgf-cm
R:1.6 kgf-cm
3.5 kgf-cm
ThinkPad 390E77
Upper Cover ASM
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“LCD Panel ASM” on page 76
To remove the upper case:
1. Remove the screws from the upper cover ASM.
Step
1M2 x 4L (3)Flat head,
2M2 x 18L (3)Pan head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
1.6 kgf-cm
silver
1.6 kgf-cm
black
2. Turn the notebook over. Then remove the 4 screws
from the base cover.
78ThinkPad 390E
Step
3M2.5 x 6L (1)Flat head,
4M2.5 x 18L
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
(3)
Head &
ColorTorque
black
Pan head,
black
2.0 kgf-cm
2.0 kgf-cm
3. Use a flat-bladed screwdriver to remove the latch.
4. Disconnect the cable from the main unit. Now you
can remove the upper cover ASM from the base
cover ASM.
ThinkPad 390E79
IMM Lower Heatsink ASM
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“CPU Board” on page 75
“LCD Panel ASM” on page 76
“Upper Cover ASM” on page 78
To remove the IMM lower heatsink ASM:
1. Remove the 2 screws securing the IMM lower
heatsink ASM. Lift the IMM lower heatsink ASM up to
remove.
2. Disconnect the power cable from the connector.
Step
2M2.5 x 6L (2)Flat head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
1.6 kgf-cm
black
80ThinkPad 390E
Fan ASM
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“CPU Board” on page 75
“LCD Panel ASM” on page 76
“Upper Cover ASM” on page 78
“IMM Lower Heatsink ASM” on page 80
To remove the fan ASM:
1. Remove the screw securing the fan ASM. Lift the fan
ASM up to remove.
2. Remove the two screws securing the fan ASM.
3. Remove the mylar from the fan ASM.
ThinkPad 390E81
Step
1M2 x 4L (1)Flat head,
2M2.5 x 3.5L
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
(2)
Head &
ColorTorque
silver
Flat head,
black
1.6 kgf-cm
1.6 kgf-cm
82ThinkPad 390E
Power Latch, IR Board, and DC-DC &
BATT Board
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“CPU Board” on page 75
“LCD Panel ASM” on page 76
“Upper Cover ASM” on page 78
“IMM Lower Heatsink ASM” on page 80
“Fan ASM” on page 81
To remove these boards and latch:
1. Remove the power latch and IR board.
2. Remove the screw securing the DC-DC & BATT
board and disconnect the DC-DC & BATT board from
the base cover ASM.
Step
3M2.5 x 6L (1)Pan head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
3.2 kgf-cm
black
ThinkPad 390E83
System Board
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“CPU Board” on page 75
“LCD Panel ASM” on page 76
“Upper Cover ASM” on page 78
“IMM Lower Heatsink ASM” on page 80
“Fan ASM” on page 81
“Power Latch, IR Board, and DC-DC & BATT Board”
on page 83
Note: See “Replacing the system Board” on page 61
before proceeding.
Remove the two screws from the system board and gently
remove the system board from the base cover ASM.
Step
1M2.5 x 6L (2)Pan head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
3.2 kgf-cm
black
84ThinkPad 390E
Combo Bay Interposer Board
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“CPU Board” on page 75
“LCD Panel ASM” on page 76
“Upper Cover ASM” on page 78
“IMM Lower Heatsink ASM” on page 80
“Fan ASM” on page 81
“Power Latch, IR Board, and DC-DC & BATT Board”
on page 83
“System Board” on page 84
Disconnect the Combo Bay Interposer Board from the
system board.
ThinkPad 390E85
LCD Bezel ASM 14.1"
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
Remove the three screws securing the LCD bezel.
Step
2M2.5 x 6L (3)Pan head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
1.6 kgf-cm
black
86ThinkPad 390E
Speaker ASM 14.1"
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LCD Bezel ASM 14.1"” on page 86
To remove the speaker:
1. Carefully disconnect the speaker cable from the connector.
2. Remove the six screws securing the speaker.
3. Gently lift the speaker away from the display panel.
Step
2M2 x 4L (2)Flat head,
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
Head &
ColorTorque
1.6 kgf-cm
silver
ThinkPad 390E87
VR Board ASM 14.1"
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LCD Bezel ASM 14.1"” on page 86
“Speaker ASM 14.1"” on page 87
To remove the VR board ASM:
1. Disconnect the power cable from the VR board.
2. Carefully remove the VR board from the display
panel.
88ThinkPad 390E
Microphone ASM 14.1"
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LCD Bezel ASM 14.1"” on page 86
“Speaker ASM 14.1"” on page 87
“VR Board ASM 14.1"” on page 88
To remove the microphone ASM:
1. Disconnect the power cable from the microphone.
2. Lift the LCD away from the display panel.
LCD Panel ASM 14.1"
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LCD Bezel ASM 14.1"” on page 86
“Speaker ASM 14.1"” on page 87
“VR Board ASM 14.1"” on page 88
“Microphone ASM 14.1"”
Remove the screw covers and screws.
ThinkPad 390E89
Step
Note: Make sure you use the correct screw for replacement.
Size (Quantity)
M2 x 4L (2)Flat head,
Head &
ColorTorque
1.6 kgf-cm
silver
90ThinkPad 390E
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