Lenovo M75q Gen 5 Compact PC User Manual
- June 26, 2024
- Lenovo
Table of Contents
Lenovo M75q Gen 5 Compact PC
Specifications
- Product: M75q Gen 5
- Edition: First Edition (June 2024)
Product Overview
Front
The front of the M75q Gen 5 includes…
Rear
The rear of the M75q Gen 5 includes…
Service Check and Symptom-to-FRU Index
Service checkout includes tips for problem determination,
symptom-to-FRU index for various issues like hard disk drive boot
error, power supply problems, beep symptoms, POST error codes, and
more.
Diagnostics
This chapter covers basic procedures for resolving computer
problems, UEFI diagnostic program, Lenovo diagnostic tools, and
self-help resources.
Hardware Removal and Installation
This section provides guidelines for handling static-sensitive
devices, service tool kit information, major FRUs and CRUs, system
board illustration, and steps for removing and installing
hardware.
FAQs
- Q: How should I handle hot components inside the computer?
- A: To avoid burns, always turn off the computer, disconnect power, and wait for approximately 10 minutes for the components to cool before opening the computer cover.
- Q: What should I do if I suffer an injury while handling the product?
- A: Seek medical care immediately if you suffer an injury while handling the product. Keep fingers and other body parts away from hazardous, moving parts.
M75q Gen 5 Hardware Maintenance Manual
First Edition (June 2024)
© Copyright Lenovo 2024. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or
software is delivered pursuant to a General Services Administration “GSA”
contract, use, reproduction, or disclosure is subject to restrictions set
forth in Contract No. GS35F-05925.
© Copyright Lenovo 2024
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ii M75q Gen 5 Hardware Maintenance Manual
About this manual
This manual provides service and reference information for ThinkCentre®
computers listed on the front cover. Illustrations in this manual might look
different from your product. Use this manual along with the advanced
diagnostic tests to troubleshoot problems. Important: This manual is intended
only for trained service technicians who are familiar with ThinkCentre
computers. Use this manual along with the advanced diagnostic tests to
troubleshoot problems effectively. Before servicing a ThinkCentre computer, be
sure to read and understand Chapter 1 “Important safety information” on page
© Copyright Lenovo 2024
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Chapter 1.
Important safety information
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.
Attention: Do not attempt to lift any objects that weigh more than 16 kg (35
lb) or objects that you think are too heavy for you. · Do not perform any
action that causes hazards to the customer, or that makes the equipment
unsafe. · Before you start the machine, ensure that other service
representatives and the customer’s personnel are not in a hazardous position.
· Place removed covers and other parts in a safe place, away from all
personnel, while you are servicing the machine. · Keep your tool case away
from walk areas so that other people will not trip over it. · Do not wear
loose clothing that can be trapped in the moving parts of a machine. Ensure
that your sleeves are fastened or rolled up above your elbows. If your hair is
long, fasten it. · Insert the ends of your necktie or scarf inside clothing or
fasten it with a nonconductive clip, approximately 8 centimeters (3 inches)
from the end. · Do not wear jewelry, chains, metal-frame eyeglasses, or metal
fasteners for your clothing. Remember: 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.
CAUTION:
Keep fingers and other parts of your body away from hazardous, moving parts.
If you suffer an injury, seek medical care immediately.
CAUTION:
Avoid contact with hot components inside the computer. During operation, some
components become hot enough to burn the skin. Before you open the computer
cover, turn off the computer, disconnect power, and wait approximately 10
minutes for the components to cool.
© Copyright Lenovo 2024
1
Electrical safety
CAUTION: Electrical current from power, telephone, and communication cables
can be hazardous. To avoid personal injury or equipment damage, disconnect the
attached power cords, telecommunication systems, networks, and modems before
you open the computer covers, unless instructed otherwise in the installation
and configuration procedures.
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 Field Replaceable Units (FRUs) · Before you start to work on the
machine, unplug the power cord. If you cannot unplug it, ask the customer to
power-off the wall box that supplies power to the machine and to lock the wall
box in the off position. · If you need to work on a machine that has exposed
electrical circuits, observe the following precautions:
Ensure that another person, familiar with the power-off controls, is near
you. Remember: 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. Remember: 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 a tester, 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. · Regularly inspect and maintain
your electrical hand tools for safe operational condition. · Do not use worn
or broken tools and testers. · Never assume that power has been disconnected
from a circuit. First, check that it has been powered-off. · Always look
carefully for possible hazards in your work area. Examples of these hazards
are moist floors, nongrounded power extension cables, power surges, and
missing safety grounds. · Do not touch live electrical circuits with the
reflective surface of a plastic dental mirror. The surface is conductive; such
touching can cause personal injury and machine damage. · Do not service the
following parts with the power on when they are removed from their normal
operating places in a machine:
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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.
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 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
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 alterations. Use
good judgment as to the safety of any 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.
Chapter 1. Important safety information 3
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
while handling the part. · 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.
Safety notices (multi-lingual translations)
The caution and danger safety notices in this section are provided in the
following languages: · English · Arabic · Brazilian/Portuguese · Chinese
(simplified) · Chinese (traditional) · French · German · Hebrew · Italian ·
Korean
4 M75q Gen 5 Hardware Maintenance Manual
· Spanish
DANGER
Electrical current from power, telephone and communication cables is
hazardous.
To avoid a shock hazard:
· Do not connect or disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during an electrical storm.
· Connect all power cords to a properly wired and grounded electrical outlet.
· Connect to properly wired outlets any equipment that will be attached to
this product. · When possible, use one hand only to connect or disconnect
signal cables. · Never turn on any equipment when there is evidence of fire,
water, or structural damage. · Disconnect the attached power cords,
telecommunications systems, networks, and modems
before you open the device covers, unless instructed otherwise in the
installation and configuration procedures. · Connect and disconnect cables as
described in the following tables when installing, moving, or opening covers
on this product or attached devices.
To Connect
1. Turn everything OFF. 2. First, attach all cables to devices. 3. Attach
signal cables to connectors. 4. Attach power cords to outlet. 5. Turn device
ON.
To Disconnect
1. Turn everything OFF. 2. First, remove power cords from outlet. 3. Remove
signal cables from connectors. 4. Remove all cables from devices.
CAUTION: When replacing the lithium battery, use only Part Number 45C1566 or
an equivalent type battery recommended by the manufacturer. If your system has
a module containing a lithium battery, replace it only with the same module
type made by the same manufacturer. The battery contains lithium and can
explode if not properly used, handled, or disposed of. Do not: · Throw or
immerse into water · Heat to more than 100°C (212°F) · Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
CAUTION:
Chapter 1. Important safety information 5
When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or
transmitters) are installed, note the following: · Do not remove the covers.
Removing the covers of the laser product could result in exposure to
hazardous laser radiation. There are no serviceable parts inside the device. ·
Use of controls or adjustments or performance of procedures other than those
specified herein
might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note
the following: Laser radiation when open. Do not stare into the beam, do not
view directly with optical instruments, and avoid direct exposure to the beam.
18 kg (37 lb) CAUTION: Use safe practices when lifting.
32 kg (70.5 lb)
55 kg (121.2 lb)
CAUTION: The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
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Chapter 1. Important safety information 7
18 kg (37 lb)
32 kg (70.5 lb)
55 kg (121.2 lb)
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PERIGO
A corrente elétrica proveniente de cabos de alimentação, de telefone e de
comunicações é perigosa.
Para evitar risco de choque elétrico:
· Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou
reconfiguração deste produto durante uma tempestade com raios.
· Conecte todos os cabos de alimentação a tomadas elétricas corretamente
instaladas e aterradas. · Todo equipamento que for conectado a este produto
deve ser conectado a tomadas corretamente
instaladas. · Quando possível, utilize apenas uma das mãos para conectar ou
desconectar cabos de sinal. · Nunca ligue nenhum equipamento quando houver
evidência de fogo, água ou danos estruturais. · Antes de abrir tampas de
dispositivos, desconecte cabos de alimentação, sistemas de telecomunicação,
redes e modems conectados, a menos que especificado de maneira diferente nos
procedimentos de instalação e configuração. · Conecte e desconecte os cabos
conforme descrito na tabela apresentada a seguir ao instalar, mover ou abrir
tampas deste produto ou de dispositivos conectados.
Para Conectar:
1. DESLIGUE Tudo. 2. Primeiramente, conecte todos os cabos aos
dispositivos. 3. Conecte os cabos de sinal aos conectores. 4. Conecte os cabos
de alimentação às tomadas. 5. LIGUE os dispositivos.
Para Desconectar:
1. DESLIGUE Tudo. 2. Primeiramente, remova os cabos de alimentação das
tomadas. 3. Remova os cabos de sinal dos conectores. 4. Remova todos os cabos
dos dispositivos.
CUIDADO:
Ao substituir a bateria de lítio, utilize apenas uma bateria com Número de
Peça 45C1566 ou um tipo de bateria equivalente recomendado pelo Se o seu
sistema possui um módulo com uma bateria de lítio, substitua-o apenas por um
módulo do mesmo tipo e do mesmo fabricante. A bateria contém lítio e pode
explodir se não for utilizada, manuseada ou descartada de maneira correta.
Não: · Jogue ou coloque na água · Aqueça a mais de 100°C (212°F) · Conserte
nem desmonte
Descarte a bateria conforme requerido pelas leis ou regulamentos locais.
Chapter 1. Important safety information 9
PRECAUCIÓN:
Quando produtos a laser (como unidades de CD-ROMs, unidades de DVD-ROM,
dispositivos de fibra ótica ou transmissores) estiverem instalados, observe o
seguinte: · Não remova as tampas. A remoção das tampas de um produto a laser
pode resultar em exposição
prejudicial à radiação de laser. Não existem peças que podem ser consertadas
no interior do dispositivo. · A utilização de controles ou ajustes ou a
execução de procedimentos diferentes dos especificados aqui
pode resultar em exposição prejudicial à radiação.
PERIGO
Alguns produtos a laser contêm diodo de laser integrado da Classe 3A ou da
Classe 3B. Observe o seguinte:
Radiação a laser quando aberto. Não olhe diretamente para o feixe a olho nu ou
com instrumentos ópticos e evite exposição direta ao feixe.
18 kg (37 lb)
32 kg (70.5 lb) 55 kg (121.2 lb)
CUIDADO: Utilize procedimentos de segurança para levantar equipamentos.
CUIDADO: O botão de controle de alimentação do dispositivo e o botão para
ligar/desligar da fonte de alimentação não desligam a corrente elétrica
fornecida ao dispositivo. O dispositivo também pode ter mais de um cabo de
alimentação. Para remover toda a corrente elétrica do dispositivo, assegure
que todos os cabos de alimentação estejam desconectados da fonte de
alimentação.
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Chapter 1. Important safety information 11
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Chapter 1. Important safety information 13
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DANGER
Le courant électrique provenant de l’alimentation, du téléphone et des câbles
de transmission peut présenter un danger.
Pour éviter tout risque de choc électrique : · Ne manipulez aucun câble et
n’effectuez aucune opération d’installation, d’entretien ou de reconfiguration
de ce produit au cours d’un orage. · Branchez tous les cordons d’alimentation
sur un socle de prise de courant correctement câblé et mis à la
terre. · Branchez sur des socles de prise de courant correctement câblés tout
équipement connecté à ce produit. · Lorsque cela est possible, n’utilisez
qu’une seule main pour connecter ou déconnecter les câbles
d’interface. · Ne mettez jamais un équipement sous tension en cas d’incendie
ou d’inondation, ou en présence de
dommages matériels. · Avant de retirer les carters de l’unité, mettez celle-ci
hors tension et déconnectez ses cordons
d’alimentation, ainsi que les câbles qui la relient aux réseaux, aux systèmes
de télécommunication et aux modems (sauf instruction contraire mentionnée dans
les procédures d’installation et de configuration). · Lorsque vous installez,
que vous déplacez, ou que vous manipulez le présent produit ou des
périphériques qui lui sont raccordés, reportez-vous aux instructions ci-
dessous pour connecter et déconnecter les différents cordons.
14 M75q Gen 5 Hardware Maintenance Manual
Connexion
Déconnexion
1. Mettez les unités HORS TENSION.
2. Commencez par brancher tous les cordons sur les unités.
3. Branchez les câbles d’interface sur des connecteurs.
4. Branchez les cordons d’alimentation sur des prises.
5. Mettez les unités SOUS TENSION.
1. Mettez les unités HORS TENSION. 2. Débranchez les cordons d’alimentation des prises. 3. Débranchez les câbles d’interface des connecteurs. 4. Débranchez tous les câbles des unités.
ATTENTION: Remplacer la pile au lithium usagée par une pile de référence
identique exclusivement, (référence 45C1566), ou suivre les instructions du
fabricant qui en définit les équivalences. Si votre système est doté d’un
module contenant une pile au lithium, vous devez le remplacer uniquement par
un module identique, produit par le même fabricant. La pile contient du
lithium et peut exploser en cas de mauvaise utilisation, de mauvaise
manipulation ou de mise au rebut inappropriée. Ne pas : · la jeter à l’eau, ·
l’exposer à des températures supérieures à 100°C, · chercher à la réparer ou à
la démonter. Ne pas mettre la pile à la poubelle. Pour la mise au rebut, se
reporter à la réglementation en vigueur.
ATTENTION: Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM,
des unités à fibres optiques, ou des émetteurs) sont installés, prenez
connaissance des informations suivantes : · Ne retirez pas le carter. En
ouvrant l’unité de CD-ROM ou de DVD-ROM, vous vous exposez au
rayonnement dangereux du laser. Aucune pièce de l’unité n’est réparable. ·
Pour éviter tout risque d’exposition au rayon laser, respectez les consignes
de réglage et
d’utilisation des commandes, ainsi que les procédures décrites dans le présent
manuel.
DANGER Certains produits à laser contiennent une diode à laser intégrée de
classe 3A ou 3B. Prenez connaissance des informations suivantes: Rayonnement
laser lorsque le carter est ouvert. Evitez toute expositiondirecte au rayon
laser. Evitez de regarder fixement le faisceau ou del’observer à l’aide
d’instruments optiques.
Chapter 1. Important safety information 15
18 kg (37 lb)
32 kg (70.5 lb) 55 kg (121.2 lb)
ATTENTION: Soulevez la machine avec précaution.
ATTENTION: L’interrupteur de contrôle d’alimentation de l’unité et
l’interrupteur dubloc d’alimentation ne coupent pas le courant électrique
alimentantl’unité. En outre, le système peut être équipé de plusieurs
cordonsd’alimentation. Pour mettre l’unité hors tension, vous devez
déconnectertous les cordons de la source d’alimentation.
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VORSICHT
An Netz-, Telefon- und Datenleitungen können gefährliche Spannungen anliegen.
Aus Sicherheitsgründen: · Bei Gewitter an diesem Gerät keine Kabel anschließen
oder lösen. Ferner keine Installations-,
Wartungs- oder Rekonfigurationsarbeiten durchführen. · Gerät nur an eine
Schutzkontaktsteckdose mit ordnungsgemäß geerdetem Schutzkontakt
anschließen. · Alle angeschlossenen Geräte ebenfalls an
Schutzkontaktsteckdosen mit ordnungsgemäß
geerdetem Schutzkontakt anschließen. · Die Signalkabel nach Möglichkeit
einhändig anschließen oder lösen, um einen Stromschlag durch
Berühren von Oberflächen mit unterschiedlichem elektrischem Potenzial zu
vermeiden.
16 M75q Gen 5 Hardware Maintenance Manual
· Geräte niemals einschalten, wenn Hinweise auf Feuer, Wasser oder
Gebäudeschäden vorliegen.
· Die Verbindung zu den angeschlossenen Netzkabeln,
Telekommunikationssystemen, Netzwerken und Modems ist vor dem Öffnen des
Gehäuses zu unterbrechen, sofern in den Installations- und
Konfigurationsprozeduren keine anders lautenden Anweisungen enthalten sind.
· Zum Installieren, Transportieren und Öffnen der Abdeckungen des Computers
oder der angeschlossenen Einheiten die Kabel gemäß der folgenden Tabelle
anschließen und abziehen.
Zum Anschließen der Kabel gehen Sie wie folgt vor
1. Schalten Sie alle Einheiten AUS. 2. Schließen Sie erst alle Kabel an die
Einheiten an. 3. Schließen Sie die Signalkabel an die Buchsen an. 4. Schließen
Sie die Netzkabel an die Steckdose an. 5. Schalten Sie die Einheit EIN.
Zum Abziehen der Kabel gehen Sie wie folgt vor
1. Schalten Sie alle Einheiten AUS. 2. Ziehen Sie zuerst alle Netzkabel aus
den
Netzsteckdosen. 3. Ziehen Sie die Signalkabel aus den Buchsen. 4. Ziehen Sie
alle Kabel von den Einheiten ab.
CAUTION:
Eine verbrauchte Lithiumbatterie nur durch eine Batterie mit der Teilenummer
45C1566 oder eine gleichwertige, vom Hersteller empfohlene Batterie ersetzen.
Enthält das System ein Modul mit einer Lithiumbatterie, dieses nur durch ein
Modul desselben Typs und von demselben Hersteller ersetzen. Die Batterie
enthält Lithium und kann bei unsachgemäßer Verwendung, Handhabung oder
Entsorgung explodieren.
Die Batterie nicht: · mit Wasser in Berührung bringen. · über 100 C erhitzen.
· reparieren oder zerlegen.
Die örtlichen Bestimmungen für die Entsorgung von Sondermüll beachten.
ACHTUNG:
Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVD- aufwerken,
Einheiten mit Lichtwellenleitertechnik oder Sendern) Folgendes beachten:
· Die Abdeckungen nicht entfernen. Durch Entfernen der Abdeckungen des
Lasergeräts können gefährliche Laserstrahlungen freigesetzt werden. Das Gerät
enthält keine zu wartenden Teile.
· Werden Steuerelemente, Einstellungen oder Durchführungen von Prozeduren
anders als hier angegeben verwendet, kann gefährliche Laserstrahlung
auftreten.
VORSICHT
Chapter 1. Important safety information 17
Einige Lasergeräte enthalten eine Laserdiode der Klasse 3A oder 3B. Beachten
Sie Folgendes:
Laserstrahlung bei geöffneter Verkleidung. Nicht in den Strahl blicken. Keine
Lupen oder Spiegel verwenden. Strahlungsbereich meiden.
18 kg
32 kg
55 kg
ACHTUNG: Arbeitsschutzrichtlinien beim Anheben der Maschine beachten.
ACHTUNG: Mit dem Netzschalter an der Einheit und am Netzteil wird die
Stromversorgung für die Einheit nicht unterbrochen. Die Einheit kann auch mit
mehreren Netzkabeln ausgestattet sein. Um die Stromversorgung für die Einheit
vollständig zu unterbrechen, müssen alle zum Gerät führenden Netzkabel vom
Netz getrennt werden.
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18 M75q Gen 5 Hardware Maintenance Manual
Chapter 1. Important safety information 19
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PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del
telefono e di comunicazione può essere pericolosa.
20 M75q Gen 5 Hardware Maintenance Manual
Per evitare il rischio di scosse elettriche:
· Non collegare o scollegare qualsiasi cavo oppure effettuare l’installazione,
la manutenzione o la riconfigurazione del prodotto durante un temporale.
· Collegare tutti i fili elettrici a una presa di alimentazione correttamente
cablata e dotata di messa a terra.
· Collegare alle prese elettriche appropriate tutte le apparecchiature che
verranno utilizzate per questo prodotto.
· Se possibile, utilizzare solo una mano per collegare o scollegare i cavi di
segnale.
· Non accendere assolutamente apparecchiature in presenza di incendi, perdite
d’acqua o danno strutturale.
· Scollegare i cavi di alimentazione, i sistemi di telecomunicazione, le reti
e il modem prima di aprire i coperchi del dispositivo, salvo istruzioni
contrarie relative alle procedure di installazione e configurazione.
· Collegare e scollegare i cavi come descritto nella seguente tabella quando
vengono effettuate operazioni di installazione, spostamento o apertura dei
coperchi di questo prodotto o delle unità collegate.
Per collegarsi
1. SPEGNERE le apparecchiature. 2. Innanzitutto, collegare tutti i cavi alle
unità. 3. Collegare i cavi di segnale ai connettori. 4. Collegare i cavi di
alimentazione alla presa. 5. Accendere l’unità.
Per scollegarsi
1. SPEGNERE le apparecchiature. 2. Innanzitutto, rimuovere i cavi di
alimentazione dalla
presa. 3. Rimuovere i cavi di segnale dai connettori. 4. Rimuovere tutti i
cavi dalle unità.
ATTENZIONE:
Quando si sostituisce la batteria al litio, utilizzare solo il Numero parte
45C1566 o un tipo di batteria equivalente consigliato dal produttore. Se sul
sistema è presente un modulo che contiene una batteria al litio, sostituirlo
solo con un tipo di modulo dello stesso tipo della stessa casa di produzione.
La batteria contiene litio e può esplodere se usata, maneggiata o smaltita in
modo non corretto.
Non: · Gettare o immergere la batteria nell’acqua · Riscaldarla ad una
temperatura superiore ai 100 gradi C (212 gradi F) · Smontarla, ricaricarla o
tentare di ripararla
Le batterie usate vanno smaltite in accordo alla normativa in vigore (DPR
915/82 e successive disposizioni e disposizioni locali).
ATTENZIONE:
Chapter 1. Important safety information 21
Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a
fibre ottiche o trasmittenti), tener presente quanto segue: · Non rimuovere
gli sportelli. L’apertura di un’unità laser può determinare l’esposizione a
radiazioni
laser pericolose. All’interno dell’unità non vi sono parti su cui effettuare
l’assistenza tecnica. · L’utilizzo di controlli, regolazioni o l’esecuzione di
procedure non descritti nel presente manuale
possono provocare l’esposizione a radiazioni pericolose.
PERICOLO Alcune unità laser contengono un diodo laser di Classe 3A o Classe
3B. Tener presente quanto segue: Aprendo l’unità vengono emesse radiazioni
laser. Non fissare il fascio, non guardarlo direttamente con strumenti ottici
ed evitare l’esposizione al fascio.
18 kg
32 kg
ATTENZIONE: Prestare attenzione nel sollevare l’apparecchiatura.
55 kg
ATTENZIONE: Il pulsante di controllo dell’alimentazione presente sull’unità e
l’interruttore dell’alimentatore non disattivano l’alimentazione corrente
fornita all’unità. E’ possibile che l’unità disponga di più cavi di
alimentazione. Per disattivare l’alimentazione dall’unità, accertarsi che
tutti i cavi di alimentazione siano scollegati dalla fonte di alimentazione.
2 1
22 M75q Gen 5 Hardware Maintenance Manual
Chapter 1. Important safety information 23
2 1
PELIGRO La corriente eléctrica procedente de cables de alimentación, teléfonos
y cables de comunicación puede ser peligrosa. Para evitar el riesgo de
descarga eléctrica: · No conecte ni desconecte los cables ni realice ninguna
tarea de instalación, mantenimiento o
reconfiguración de este producto durante una tormenta eléctrica. · Conecte
todos los cables de alimentación a tomas de corriente debidamente cableadas y
conectadas a tierra.
24 M75q Gen 5 Hardware Maintenance Manual
· Cualquier equipo que se conecte a este producto también debe conectarse a
tomas de corriente debidamente cableadas.
· Siempre que sea posible, utilice una sola mano para conectar o desconectar
los cables de señal.
· No encienda nunca un equipo cuando hay señales de fuego, agua o daños
estructurales.
· Desconecte los cables de alimentación, los sistemas de telecomunicaciones,
las redes y los módems conectados antes de abrir las cubiertas de los
dispositivos, a menos que se indique lo contrario en los procedimientos de
instalación y configuración.
· Conecte y desconecte los cables, como se describe en la tabla siguiente,
cuando instale, mueva o abra las cubiertas de este producto o de los
dispositivos conectados.
Para conectar
1. APÁGUELO todo. 2. En primer lugar, conecte todos los cables a los
dispositivos. 3. Conecte los cables de señal a los conectores. 4. Enchufe los
cables de alimentación a las tomas de
corriente. 5. Encienda el dispositivo.
Para desconectar
1. APÁGUELO todo. 2. En primer lugar, desenchufe los cables de
alimentación de las tomas de corriente. 3. Desconecte los cables de señal de
los conectores. 4. Desconecte todos los cables de los dispositivos.
PRECAUCIÓN: Cuando sustituya una batería de litio, utilice solamente una
batería número de pieza 45C1566 u otra de tipo equivalente recomendada por el
fabricante. Si su sistema dispone de un módulo que contiene una batería de
litio, reemplácelo sólo con el mismo tipo de módulo, del mismo fabricante. La
batería contiene litio y puede explotar si no se utiliza, manipula o desecha
correctamente.
No debe: · Arrojarla al agua o sumergirla en ella · Exponerla a temperaturas
superiores a 100°C (212°F) · Repararla o desmontarla Deshágase de la batería
según especifiquen las leyes o normas locales.
PRECAUCIÓN: Cuando haya productos láser (como unidades de CD-ROM, unidades de
DVD, dispositivos de fibra óptica o transmisores) instalados, tenga en cuenta
lo siguiente: · No quite las cubiertas. Si quita las cubiertas del producto
láser, podría quedar expuesto a radiación
láser peligrosa. Dentro del dispositivo no existe ninguna pieza que requiera
servicio técnico. · Si usa controles o ajustes o realiza procedimientos que no
sean los especificados aquí, podría
exponerse a radiaciones peligrosas.
Chapter 1. Important safety information 25
PELIGRO
Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase
3B. Tenga en cuenta lo siguiente:
Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo
láser, ni siquiera con instrumentos ópticos, y evite exponerse directamente al
rayo láser.
18 kg
32 kg
PRECAUCIÓN: Adopte procedimientos seguros al levantar el equipo.
55 kg
PRECAUCIÓN: El botón de control de alimentación del dispositivo y el
interruptor de alimentación de la fuente de alimentación no desconectan la
corriente eléctrica suministrada al dispositivo. Además, el dispositivo podría
tener más de un cable de alimentación. Para suprimir toda la corriente
eléctrica del dispositivo, asegúrese de que todos los cables de alimentación
estén desconectados de la toma de corriente.
2 1
26 M75q Gen 5 Hardware Maintenance Manual
Chapter 2.
Important service information
Strategy for replacing FRUs
Before replacing parts: Ensure that all software fixes, drivers, and UEFI BIOS
downloads are installed before you replace any FRUs listed in this manual.
After a system board is replaced, ensure that the latest UEFI BIOS is loaded
to the system board before you complete the service action.
To download and install software fixes, drivers, and UEFI BIOS, go to
https://pcsupport.lenovo.com and follow the instructions on the screen.
Use the following strategy to prevent unnecessary expense for replacing and
servicing FRUs: · If you are instructed to replace a FRU but the replacement
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 replacing one of them does not
correct the problem, reinstall that board, and then replace the other one. ·
If an adapter or a device consists of more than one FRU, any of the FRUs might
be the cause of the error. 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.
Strategy for replacing a hard disk drive or a solid-state drive
Always try to run a low-level format operation before replacing a hard disk
drive or a solid-state drive. This will cause all customer data on the drive
to be lost. Ensure that the customer has a current backup of the data before
you perform this task.
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. If you select an incorrect drive, data or
programs can be overwritten.
Important notice for replacing a system board
Some components mounted on a system board are very sensitive. Improper
handling of a system board can cause damage to those components, and may cause
a system malfunction.
After replacing the system board, use the Golden Key U1 tool to bind the model
type, serial number, and Brand ID of the computer with the new system board.
Refer to https://support.lenovo.com/us/en/solutions/ ht102004 for
instructions.
Attention: When handling a system board: · Do not drop a system board or apply
any excessive force to it. · Avoid rough handling of any kind. · Avoid bending
a system board and hard pushing to prevent cracking at each Ball Grid Array
(BGA)
chipset.
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How to use error codes
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.
Whatever causes the first error code might also cause false error codes. If no
error code is displayed, see whether the error symptom is listed in the
“Symptom-to-FRU Index” section.
Strategy for replacing FRUs for CTO, special-bid, and standard models
This topic provides information about the model types and FRU identification.
Product definition
This topic introduces different model types and how to identify each type.
Dynamic Configure To Order (CTO) model This model provides the ability for a
customer to configure a Lenovo solution from a Web site, and have this
configuration sent to fulfillment, where it is built and shipped directly to
the customer. The machine label and eSupport will load these products as the
4-character MT, 4-character model, and 2-character country code. The model is
“CTO1” and the default country code is “WW” (example: 20AACTO1WW). Special-bid
model This model is a unique configuration that has been negotiated between
Lenovo and the customer. A unique MTM consists of a 4-character MT, a
4-character model, and a numeric 2-character country code is provided to the
customer to place orders (example: 20AA000955). The country code assigned is
numeric and does not designate a specific country or region. The custom model
factsheet for the MTM indicates which country the special-bid MTM is set up
for. Special-bid offering is not generally announced. Standard model Standard
models (fixed configuration) are announced and offered to all customers. The
MTM portion of the machine label consists of a 4-character MT, a 4-character
model, and an alphabetic 2-character country code. The country code assigned
is alphabetic and represents a designated country or region (example:
20AA0009UK).
FRU identification
To identify FRUs for a product, do the following: 1. Go to:
https://support.lenovo.com/partslookup. 2. Type the Machine Type in the
corresponding field to get a general FRU list, or type the Serial Number for
more detailed FRU information.
28 M75q Gen 5 Hardware Maintenance Manual
Chapter 3.
Product Overview
Front
1. ThinkCentre® LED 3. Storage drive activity indicator 5. USB-A connector (USB 10Gbps, Always On USB) 7. Headset connector
2. Power button with power indicator 4. USB-C® connector (USB 10Gbps) 6. USB-A connector (USB 10Gbps)
© Copyright Lenovo 2024
29
Rear
1. Security-lock slot 3. Wi-Fi® antenna slot* 5. USB-A connectors (Hi-Speed
USB)
7. HDMITM out connector 9. DisplayPortTM out connector
- for selected models
2. Optional connectors*
4. Ethernet connector 6. USB-A connector (USB 5Gbps) (with smart power-on
feature)
8. USB-A connector (USB 10Gbps)
10. Power adapter connector
30 M75q Gen 5 Hardware Maintenance Manual
Chapter 4.
Service checkout and symptom-to-FRU index
This chapter provides information about general service checkout and symptom-
to-FRU index.
Service checkout
Attention: The drives in the computer you are servicing might have been
rearranged or the drive startup sequence 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.
General error messages appear if a problem or conflict is found by a program,
the operating system, or both. For an explanation of these messages, refer to
the information supplied with that software package.
Use the following procedure to help determine the cause of the problem: 1.
Turn off the computer and all external devices. 2. Check all cables and power
cords. 3. Set all display controls to the middle position. 4. Turn on all
external devices. 5. Turn on the computer. · Look for displayed error codes. ·
Listen for beep codes. · Look for readable instructions or a main menu on the
display. If you did not receive the correct response, proceed to step 6 on
page 31. If you do receive the correct response, proceed to step 7 on page 31.
6. Look at the following conditions and follow the instructions: · If you hear
beep codes during POST, go to “Beep symptoms” on page 33. · If the computer
displays a POST error, go to “POST error codes” on page 34. · If the computer
hangs and no error is displayed, continue at step 7 on page 31. 7. Run the
Diagnostic programs. See Chapter 5 “Diagnostics” on page 39. · If you receive
an error, replace the part that the diagnostic program calls out. · If the
test stops and you cannot continue, replace the last device tested.
Problem determination tips
Due to the variety of hardware and software combinations that can be
encountered, use the following information to assist you in problem
determination. If possible, have this information available when requesting
assistance from Service Support and Engineering functions. · Machine type and
model · Processor or hard disk drive upgrades · Failure symptom
Do diagnostics indicate a failure? What, when, where, single, or multiple
systems? Is the failure repeatable? Has this configuration ever worked?
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If it has been working, what changes were made prior to its failing? Is
this the original reported failure? · Diagnostics version Type and version
level · Hardware configuration Print (print screen) configuration currently
in use BIOS level · Operating system software Type and version level
Notes: To eliminate confusion, identical systems are considered identical only
if they: 1. Are the exact machine type and models 2. Have the same BIOS level
3. Have the same adapters/attachments in the same locations 4. Have the same
address jumpers/terminators/cabling 5. Have the same software versions and
levels 6. Have the same Diagnostic Diskettes (version) 7. Have the same
configuration options set in the system 8. Have the same setup for the
operating system control files
Comparing the configuration and software set-up between “working and non-
working” systems will often lead to problem resolution.
Symptom-to-FRU index
The Symptom-to-FRU index lists error symptoms and possible causes. The most
likely cause is listed first. Always begin with “Service checkout” on page 31.
This index can also be used to help you decide which FRUs to have available
when servicing a computer. If you are unable to correct the problem using this
index, go to “Undetermined problems” on page 37.
Notes:
· The Symptom-to-FRU index is not specific to any machine type and are
applicable to all computers. · If you have both an error message and an
incorrect audio response, diagnose the error message first. · If you cannot
run the diagnostic tests or you get a diagnostic error code when running a
test, but did
receive a POST error message, diagnose the POST error message first. · If you
did not receive any error message, look for a description of your error
symptoms in the first part of
this index.
Hard disk drive boot error
A hard disk drive boot error can have the following causes.
Error
The start-up drive is not in the boot sequence in configuration.
No operating system installed on the boot drive.
FRU/Action
Check the configuration and ensure that the start-up drive is in the boot
sequence.
Install an operating system on the boot drive.
32 M75q Gen 5 Hardware Maintenance Manual
Error The boot sector on the startup drive is corrupted.
The drive is defective.
FRU/Action
The drive must be formatted. Do the following: 1. Attempt to back up the data
on the failing hard disk drive. 2. Using the operating system programs, format
the hard disk drive.
Replace the hard disk drive.
Power supply problems
If you suspect a power problem, use the following procedures.
Check/Verify
Check the following for proper installation. · Power cord · On/Off switch
connector · On/Off switch power supply connector · System board power supply
connectors · Microprocessor connection
Check the power cord for continuity.
Check the power-on switch for continuity.
FRU/Action Reseat connectors
Power cord Power-on switch
Beep symptoms
Beep symptoms are tones or a series of tones separated by pauses (intervals
without sound) during POST.
The following table describes the beep symptoms.
Beep symptom 2 short beeps: common POST error 3 short and 1 long beeps: DRAM
memory error
4 long beeps: insufficient shadow RAM resources for option ROM (error code:
8998) or PCIe/PCI MMIO (memory mappedinput/output) resources (error code:
8999) 2 long and 3 short beeps: graphics card error
FRU/Action Common POST error code. See the detailed failure information in
“POST error codes” on page 34.
Perform the following actions in order: 1. Make sure that the memory modules
are properly seated in the memory slots. 2. Replace the memory modules. 3.
Replace the system board (for trained service personnel only).
See the detailed failure information in “POST error codes” on page 34.
Perform the following actions in order: 1. Make sure that the graphics cards
are properly seated in the slots. 2. Replace the graphics cards. 3. Replace
the system board (for trained service personnel only).
Chapter 4. Service checkout and symptom-to-FRU index 33
POST error codes
Each time you turn on the system, it performs a series of tests that check the
operation of the system and some options. This series of tests are called the
Power-On Self-Test, or POST. POST checks the following operations:
· Some basic system-board operations · Memory operation · Video operation ·
Whether the boot drive is working
If the POST detects a problem, an error message appears on the screen. A
single problem might cause several error messages to appear. When you correct
the cause of the first error message, the other error messages probably will
not appear on the screen the next time.
Error code 0135
0162
0164 1762
POST error message CPU fan failure System fan failure Power fan failure Front
fan failure Rear fan failure Auxiliary fan failure ODD fan failure Setup data
integrity check failure
Memory configuration change has occurred
Storage device configuration change has occurred
Description/Action
This error message is displayed when a fan fails and the system might be
overheating. Press F10 to exit.
This error indicates the checksum of BIOS Setup data in NVRAM is bad. In BIOS
Setup, the “Save Changes and Exit” operation is needed in order to clear this
error.
This error message is displayed when the memory size is changed. Press F10 to
exit.
This error message is displayed when a hard disk drive change or an optical
drive change has been made. Press F10 to exit.
34 M75q Gen 5 Hardware Maintenance Manual
Error code 8998
8999
POST error message Not enough shadow RAM resources for OPTION ROM, not all
devices initialized. Suggest to remove some add-on cards, or change to UEFI
mode in BIOS setup.
Not enough PCIe/PCI MMIO resources. Currently only one video card is enabled.
Remove some PCIe cards.
Description/Action
This error message is displayed when the shadow RAM resources for option ROM
are insufficient.
If the legacy option ROM is insufficient, remove some add-in cards.
For the system that supports UEFI, set UEFI as the first priority.
This error message is displayed when the PCIe/PCI MMIO (memory mapped
input/output) resources are insufficient.
Remove some add-in cards.
Miscellaneous error conditions
Message/Symptom Changing display colors
FRU/Action Display/Monitor
Computer will not power-off. See “Hard disk drive boot error” on page 32.
Computer will not RPL from server
1. Power Switch 2. System Board 3. Riser card, if installed.
1. Ensure that the network is in startup sequence as the first device or the
first device after diskette.
2. Ensure that the network adapter is enabled for RPL. 3. Network adapter
(Advise network administrator of
new MAC address)
Computer will not perform a Wake On LAN® (if applicable)
1. Check the power supply and signal cable connections to the network
adapter.
2. Ensure that the operating system settings are set to enable Wake on LAN.
3. Ensure that the Wake On LAN feature is enabled in Setup/Configuration.
4. Ensure that the network administrator is using the correct MAC address.
5. Ensure no interrupt or I/O address conflicts.
6. Network adapter (advise network administrator of new MAC address)
Dead computer. See “Hard disk drive boot error” on page 32.
1. Power Supply 2. System Board
Diskette drive in-use light remains on or does not light when drive is active.
1. Diskette Drive 2. System Board 3. Diskette Drive Cable
Chapter 4. Service checkout and symptom-to-FRU index 35
Message/Symptom
FRU/Action
Blank screen except for flashing cursor.
1. System Board 2. Primary Hard Disk Drive 3. Hard Disk Drive Cable
Incorrect memory size during POST
1. Run the Memory tests. 2. Memory Module 3. System Board
“Insert a Diskette” icon appears with a known-good diagnostics diskette in the first 3.5-inch diskette drive.
1. System Board 2. Diskette Drive Cable 3. Network Adapter
Intensity or color varies from left to right of characters and color bars
1. Display 2. Video adapter (if present) 3. System Board
No power or fan not running
1. See “Hard disk drive boot error” on page 32.
Non-system disk or disk error-type message with a known-good diagnostic diskette.
1. Diskette Drive 2. System Board 3. Diskette Drive Cable
Other display symptoms not listed above (including blank or illegible display)
1. Display 2. System Board
Power-on indicator or hard disk drive in-use light not on, but computer works correctly
1. Power switch/LED assembly 2. System Board
Printer problems
1. Printer 2. System Board
Program loads from the hard disk with a known-good diagnostics diskette in the first 3.5-inch diskette drive
1. Run the Setup Utility program and check the Startup sequence.
2. Diskette Drive 3. Diskette Drive Cable 4. System Board 5. Power Supply
RPL computer cannot access programs from its own hard disk.
1. If the network administrator is using LCCM Hybrid RPL, check the startup
sequence:
a. First device – network
b. Second device – hard disk
2. Hard disk drive
RPL computer does not RPL from server
1. Check the startup sequence. 2. Check the network adapter LED status.
36 M75q Gen 5 Hardware Maintenance Manual
Message/Symptom Serial or parallel connector device failure (system board
connector)
Serial or parallel connector device failure (adapter connector)
Some or all keys on the keyboard do not work
FRU/Action
1. External Device Self-Test OK? 2. External Device 3. Cable 4. System Board
1. External Device Self-Test OK? 2. External Device 3. Cable 4. Alternate
Adapter 5. System Board
1. Keyboard 2. Keyboard Cable 3. System Board
Undetermined problems
This section provides instructions on how to find out the failing devices or
adapters. 1. Turn off the computer. 2. Remove or disconnect the following
components (if installed) one at a time. a. External devices (modem, printer,
or mouse) b. Any adapters c. Memory modules d. Extended video memory e.
External Cache f. External Cache RAM g. Hard disk drive h. Diskette drive 3.
Turn on the computer to retest the system. 4. Repeat steps 1 through 3 until
you find the failing device or adapter.
If all devices and adapters have been removed, and the problem continues,
replace the system board. See Chapter 6 “Hardware removal and installation” on
page 43.
Recover from a BIOS update failure
1. Remove all media from the drives and turn off all connected devices. 2.
Insert the BIOS update disc into the optical drive, and then turn off the
computer. 3. Disconnect all power cords from electrical outlets. Then, remove
any parts that impede access to the
Clear CMOS jumper. 4. Move the jumper from the standard position to the
maintenance position. 5. Reconnect the power cords for the computer and the
monitor to electrical outlets. 6. Turn on the computer and the monitor. When
the computer beeps, the recovery process begins. 7. After the recovery process
is completed, the computer will be turned off automatically.
Chapter 4. Service checkout and symptom-to-FRU index 37
Note: Depending on the computer model, the recovery process will take two to
three minutes. 8. Disconnect all power cords from electrical outlets. 9. Move
the jumper back to the standard position. 10. Reinstall all the parts that
have been removed. Then, reconnect the power cords for the computer and
the monitor to electrical outlets. 11. Turn on the computer and the monitor.
When the logo screen is displayed, press F1 or Fn+F1. 12. To prevent data
loss, ensure that BIOS settings are restored to an earlier point.
Clear CMOS
1. Remove all media from the drives and turn off all connected devices and
the computer. 2. Disconnect all power cords from electrical outlets. Then,
remove any parts that impede access to the
Clear CMOS jumper. 3. Move the jumper from the standard position to the
maintenance position. 4. Reconnect the power cords for the computer and the
monitor to electrical outlets. 5. Turn on the computer and the monitor. When
the computer beeps, wait for approximately 10 seconds. 6. Turn off the
computer by holding the power button for approximately four seconds. 7.
Disconnect all power cords from electrical outlets. 8. Move the jumper back to
the standard position. 9. Reinstall all the parts that have been removed.
Then, reconnect the power cords for the computer and
the monitor to electrical outlets. 10. Turn on the computer and the monitor.
When the logo screen is displayed, press F1 or Fn+F1. 11. To prevent data
loss, ensure that BIOS settings are restored to an earlier point.
38 M75q Gen 5 Hardware Maintenance Manual
Chapter 5.
Diagnostics
Use diagnostic solutions to test hardware components and report operating-
system-controlled settings that interfere with the correct operation of your
computer.
Basic procedure for resolving computer problems
Prerequisite Before you start, read Chapter 1 “Important safety information”
on page 1 and print the following instructions.
1. Check that: a. The cables for all connected devices are connected
correctly and securely. b. All components have been reassembled correctly. c.
All connected devices that require ac power are connected to properly grounded
and working electrical outlets. d. All connected devices are enabled in UEFI
BIOS.
2. Use an antivirus program to see if the computer has been infected by a
virus. If the program detects a virus, remove the virus.
3. Go to “” on page and follow the instructions for the type of problem you
are experiencing. 4. Run the diagnostic program. 5. Recover your operating
system. 6. If the problem persists, contact Lenovo.
UEFI diagnostic program
A UEFI diagnostic program is preinstalled on the computer. It enables you to
test memory modules and internal storage devices, view system information, and
check and recover bad sectors on internal storage devices.
To run the UEFI diagnostic program, do the following: 1. Turn on the computer.
If the computer cannot be turned on, go to “Basic procedure for resolving
computer problems” on page 39. If an error code is displayed, go to “Symptom-
to-FRU index” on page 32 for error code descriptions and troubleshooting
hints. 2. Repeatedly press and release the F10 key when turning on the
computer. The main screen of the UEFI diagnostic program is displayed. 3.
Follow the instructions on the screen to use the diagnostic program.
The options on the main screen are as follows:
© Copyright Lenovo 2024
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Table 1. Options on the main screen of the UEFI diagnostic program
DIAGNOSTICS
TOOLS
· CPU [U] · DISPLAY [D] · MEMORY [E] · MOTHERBOARD [H] · PCI EXPRESS [P] · STORAGE [S] · AUDIO [Z] · OPTICAL [O] · RUN ALL [R]
· SYSTEM INFORMATION [F1] · BAD BLOCK RECOVERY [F3] · SMART INFORMATION [F5]
Note: The options on the main screen might vary, depending on the hardware configuration and the UEFI diagnostic program version preinstalled on the computer.
Lenovo diagnostic tools
For information about Lenovo diagnostic tools, go to:
https://pcsupport.lenovo.com/lenovodiagnosticsolutions
Self-help resources
Use the following self-help resources to learn more about the computer and
troubleshoot problems.
Resources Troubleshooting and frequently asked questions Accessibility
information
Reset or restore Windows
How to access?
· https://www.lenovo.com/tips · https://forums.lenovo.com
https://www.lenovo.com/accessibility
· Use Lenovo recovery options. 1. Go to https://support.lenovo.com/
HowToCreateLenovoRecovery. 2. Follow the on-screen instructions.
· Use Windows recovery options. 1. Go to https://pcsupport.lenovo.com. 2.
Detect your computer or manually select your computer model. 3. Navigate to
the troubleshooting menu to diagnose the operating system for recovery
instructions.
40 M75q Gen 5 Hardware Maintenance Manual
Resources
Use the Vantage app to: · Configure device settings. · Download and install
UEFI BIOS, drivers and firmware
updates. · Secure you computer from outside threats. · Diagnose hardware
problems. · Check the computer warranty status. · Access User Guide and
helpful articles.
Note: The available features vary depending on the computer model.
Product documentation: · Safety and Warranty Guide · Generic Safety and
Compliance Notices · Setup Guide · This User Guide · Regulatory Notice
Lenovo Support Web site with the latest support information of the following:
· Drivers and software · Diagnostic solutions · Product and service warranty ·
Product and parts details · Knowledge base and frequently asked questions
How to access?
Type Vantage in the Windows search box.
Go to https://pcsupport.lenovo.com. Then, follow the onscreen instructions to
filter out the documentation you want.
https://pcsupport.lenovo.com
Windows help information
· Type Get Help or Tips in the Windows search box.
· Use Windows Search or the Cortana® personal assistant.
· Microsoft support Web site: https://support.microsoft.com
Chapter 5. Diagnostics 41
42 M75q Gen 5 Hardware Maintenance Manual
Chapter 6.
Hardware removal and installation
This chapter provides instructions on how to remove and install hardware for your computer.
Handling static-sensitive devices
Do not open the static-protective package containing the new part until the
defective part has been removed and you are ready to install the new part.
Static electricity, although harmless to you, can seriously damage computer
components and options.
When you handle options and other computer components, take these precautions
to avoid static-electricity damage:
· Limit your movement. Movement can cause static electricity to build up
around you.
· Always handle options and other computer components carefully. Handle
PCI/PCIe cards, memory modules, system boards, and microprocessors by the
edges. Never touch any exposed circuitry.
· Prevent others from touching the options and other computer components.
· Touch the static-protective package containing the part to a metal
expansion-slot cover or other unpainted metal surface on the computer for at
least two seconds. This reduces static electricity from the package and your
body before you install or replace a new part.
· When possible, remove the new part from the static-protective package, and
install it directly in the computer without setting the part down. When this
is not possible, place the static-protective package on a smooth, level
surface and place the part on the package.
· Do not place the part on the computer cover or other metal surface.
Service tool kit
Ensure that the following common service tool kit is prepared before you
service the computer.
No.
Tool name
Specific
Product scope
Tool type
1
Screw driver: Phillips Head 0
PH0
All
Common tool
2
Screw driver: Phillips Head 00
PH00
All
Common tool
3
Screw driver: Phillips Head 01
1
All
Common tool
4
Screw driver: Phillips Head 01
1, Shank length greater than 6
ThinkStation/DT
Common tool
inches
5
Screw driver: Phillips Head 02
2, Shank length greater than 6 ThinkStation/SC/DT Common tool
inches
6
Screw driver: Torx Head T5
T5
IdeaPad
Common tool
© Copyright Lenovo 2024
43
No.
Tool name
Specific
Product scope
Tool type
7
Screw driver: Torx Head T15
T15, for Chassis outside
ThinkStation
Common tool
8
Screw driver: Torx Head T20
T20, Shank length greater than
ThinkStation
6 inches, for heatsink and CPU
9
Screw driver: Torx Head T30
T30, Shank length greater than
ThinkStation
6 inches, for heatsink and CPU
10
Pry tools 1
N/A
All
Common tool Common tool Common tool
11
Tweezers (conductive)
N/A
All
Common tool
12
Tweezers (isolated)
N/A
All
Common tool
13
Suction cup
N/A
All
Common tool
14
Hexagonal socket (for VGA )
H5 mm or 4.8 mm
ThinkCentre/Tiny
Common tool
15 Hexagonal socket (for Tinyantenna)
H8 mm
ThinkCentre/Tiny
Common tool
16
Ajustable Torque Screwdriver
0.2 Nm to 4.0 Nm,
All
Threadripper CPU, CAMM, etc
17
ESD Mat
ESD Mat
All
Common tool Common tool
18
USB Flash Drives
19
USB-C to USB-A Converter
For Golden Key, Chrome Reloads, AutoPilot, etc
For USB-C only systems
All
Common tool
All
Common tool
20
SSD/WWAN/IC Thermal pad
Variety of thickness, most
All
common 0.5mm thickness pad
under the component
21 Silicone grease for CPU or heatsink
N/A
All
repairing
22
Polyamide tape
N/A
All
Consumable Consumable Consumable
23
Mylar tape
N/A
All
Consumable
44 M75q Gen 5 Hardware Maintenance Manual
No.
Tool name
Specific
Product scope
Tool type
24
Eraser
N/A
All
Consumable
25
Electrical tape
N/A
All
Consumable
26
Double sided tape
N/A
All
Consumable
27
Conductive tape
N/A
All
Consumable
28
Cleaning pads/wipes
N/A
All
Consumable
29
Heat gun
30
Brown brush
N/A 25 mm to 35 mm wide
All
Special Tool
(Depot only)
All
Special tool
31
Contact Cleaner Spray
32
Hexagonal socket
WD-40 Contact Cleaner for battery connector
17 mm
ThinkPad X1 Carbon
Yoga AIO 7 27ACH6/ Yoga AIO 7 27ARH6
Special tool Special tool
Note: The silicone grease can be applied to the surfaces of the microprocessor
and heat sink to eliminate air gaps. For parts with silicone grease applied,
it is suggested that you apply new grease during the installation.
Major FRUs and CRUs
Your computer contains the following types of CRUs and FRUs:
· Self-service CRUs: Refer to parts that can be replaced easily by customer
themselves or by trained service technicians at an additional cost.
· Optional-service CRUs: Refer to parts that can be replaced by customers with
a greater skill level. Trained service technicians can also provide service to
replace the parts under the type of warranty designated for the customer’s
machine.
· FRUs: Refer to parts that must be Preplaced only by trained service
technicians. If customers choose to replace the FRUs by themselves, the
product warranty might be affected.
Chapter 6. Hardware removal and installation 45
Number 1 2 3 4 4 5 6 7 8 9 10
Description Computer cover ThinkCentre LED cable Heat sink System fan Microprocessor System board Internal speaker Wi-Fi card Wi-Fi card shield Memory module M.2 solid-state drive*
46 M75q Gen 5 Hardware Maintenance Manual
Self-service CRU Yes No No No No No No No No Yes Yes
Optional-service CRU No Yes Yes Yes No No Yes No No No No
Number 11 12 13 14 15 16 17 18 19 20 21 a
b c d e f g
Description M.2 solid-state drive thermal pad M.2 solid-state drive bracket Chassis Board-to-Board module Wi-Fi antenna bracket Front Wi-Fi antenna Rear Wi-Fi antenna External Wi-Fi antenna Dust shield Thumb screw Chassis rubber Power adapter bracket Power adapter Power cord Vertical stand Mouse Keyboard VESA® mount bracket*
Self-service CRU Yes No No No No No No Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes
Optional-service CRU No Yes No Yes No No No No No No Yes No No No No No No No
- for selected models
For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go to: http://www.lenovo.com/serviceparts-lookup
Chapter 6. Hardware removal and installation 47
System board illustration
Item 1 3 5 7 9 11 13
Description Clear CMOS (Complementary Metal Oxide Semiconductor)/Recovery
jumper Microprocessor socket Memory slot (DIMM2) Power button switch
Internal speaker connector
M.2 Wi-Fi card slot Serial (COM2) connector
Item 2 4 6 8 10 12
Description Board-to-Board connector
Memory slot (DIMM1) ThinkCentre LED connector System fan connector Cover
presence switch connector (intrusion switch connector) M.2 solid-state drive
slots (2)
Removing and installing hardware
This section provides instructions on how to remove and install hardware for
your computer.
Attention: Do not open your computer or attempt any repair before reading and
understanding the Chapter 1 “Important safety information” on page 1.
External options
You can connect external options to your computer, such as external speakers,
a printer, or a scanner. For some external options, you must install
additional software in addition to making the physical connection. When
installing an external option, see Chapter 3 “Product overview” on page 29 to
identify the required
48 M75q Gen 5 Hardware Maintenance Manual
connector. Then, use the instructions that come with the option to help you
make the connection and install any required software or device drivers.
Power adapter bracket
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. For access,
do the following:
1. Remove any media from the drives and turn off all connected devices and
the computer. 2. Disconnect all power cords from electrical outlets and
disconnect all cables from the computer. Replacement procedure
Chapter 6. Hardware removal and installation 49
50 M75q Gen 5 Hardware Maintenance Manual
Vertical stand
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. For access,
do the following:
1. Remove any media from the drives and turn off all connected devices and
the computer. 2. Disconnect all power cords from electrical outlets and
disconnect all cables from the computer.
Chapter 6. Hardware removal and installation 51
Removal step
VESA mount bracket
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. For access,
do the following:
1. Remove any media from the drives and turn off all connected devices and
the computer. 2. Disconnect all power cords from electrical outlets and
disconnect all cables from the computer. Removal steps
52 M75q Gen 5 Hardware Maintenance Manual
No
Screw (quantity)
Color
1
M3 x 6 mm, Zn coated(2)
Black
Torque 1.5 ± 0.2 lb/in
Dust shield
Prerequisite Before you start, read Generic Safety and Compliance Notices and print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool.
For access, do the following: 1. Remove any media from the drives and turn off
all connected devices and the computer. 2. Disconnect all power cords from
electrical outlets and disconnect all cables from the computer.
Removal step
Chassis rubber
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
Chapter 6. Hardware removal and installation 53
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool. For access, do the following:
1. Remove any media from the drives and turn off all connected devices and
the computer. 2. Disconnect all power cords from electrical outlets and
disconnect all cables from the computer. Removal step
External Wi-Fi antenna
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool. For access, do the following:
1. Remove any media from the drives and turn off all connected devices and
the computer. 2. Disconnect all power cords from electrical outlets and
disconnect all cables from the computer.
54 M75q Gen 5 Hardware Maintenance Manual
Removal steps
Computer cover
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. For access,
do the following:
1. Remove any media from the drives and turn off all connected devices and
the computer. 2. Disconnect all power cords from electrical outlets and
disconnect all cables from the computer. 3. Unlock any locking device that
secures the computer cover. 4. Hold the sides of the computer and gently lay
it down so that the computer cover is facing up.
Chapter 6. Hardware removal and installation 55
Removal steps
No.
Screw (quantity)
Color
1
M4 x 5 mm, Zi coated(1)
Black
Note: If a locking device is available, use it to lock the computer.
Board-to-Board module
Torque 5 ± 0.1 lb/in
Prerequisite Before you start, read Generic Safety and Compliance Notices and print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool.
For access, remove the computer cover. See “Computer cover” on page 55.
Removal steps
56 M75q Gen 5 Hardware Maintenance Manual
No.
Screw (quantity)
Color
1
M3 x 4 mm, Zn coated(1)
Black
2
M3 x 5 mm, Zn coated(1)
Black
Torque 3 ± 0.5 lb/in 3 ± 0.5 lb/in
Internal speaker
Prerequisite Before you start, read Generic Safety and Compliance Notices and print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool.
For access, do the following: 1. Remove the computer cover. See “Computer
cover” on page 55. 2. Disconnect the internal speaker cable from the internal
speaker connector on the system board.
Removal steps
System fan
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool.
Chapter 6. Hardware removal and installation 57
For access, do the following: 1. Remove these parts in order, if any: ·
“Computer cover” on page 55 · “Internal speaker” on page 57 2. Disconnect the
system fan cable from the system fan connector on the system board.
Removal steps
ThinkCentre LED cable
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. 58 M75q Gen
5 Hardware Maintenance Manual
For access, remove these parts in order, if any: · “Computer cover” on page 55
· “Internal speaker” on page 57 · “System fan” on page 57 Removal step
Wi-Fi card
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. For access,
remove the computer cover. See “Computer cover” on page 55. Removal steps
Chapter 6. Hardware removal and installation 59
No.
Screw (quantity)
Color
1
M2 x 3.8 mm, Nickel coated(1)
Silver
Torque 1.5 ± 0.5 lb/in
Memory module
Prerequisite Before you start, read Generic Safety and Compliance Notices and print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool.
Ensure that you follow the installation order for memory modules shown in the
following illustration.
For access, remove these parts in order, if any: · “Computer cover” on page 55
· “System fan” on page 57 Replacement procedures
60 M75q Gen 5 Hardware Maintenance Manual
Note: During the installation, ensure that you align the memory module to the
slot and press down on both ends until the latches are fully engaged with a
click.
M.2 solid-state drive thermal pad
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool. For access, remove the computer cover. See
“Computer cover” on page 55. Removal steps
M.2 solid-state drive
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
Chapter 6. Hardware removal and installation 61
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool. Attention: The internal storage drive is
sensitive. Inappropriate handling might cause damage and permanent loss of
data. When handling the internal storage drive, observe the following
guidelines: · Replace the internal storage drive only for upgrade or repair.
The internal storage drive is not designed for
frequent changes or replacement. · Before replacing the internal storage
drive, make a backup copy of all the data that you want to keep. · Do not
touch the contact edge of the internal storage drive. Otherwise, the internal
storage drive might get
damaged. · Do not apply pressure to the internal storage drive. · Do not make
the internal storage drive subject to physical shocks or vibration. Put the
internal storage
drive on a soft material, such as cloth, to absorb physical shocks. 1. For
access, remove these parts in order, if any:
· “Computer cover” on page 55 · “System board” on page 67 2. Disconnect the
front Wi-Fi antenna from the Wi-Fi card, see “Wi-Fi card” on page 59. Removal
steps
Front Wi-Fi antenna
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool.
1. For access, remove the computer cover. See “Computer cover” on page 55. 2.
Disconnect the front Wi-Fi antenna from the Wi-Fi card, see “Wi-Fi card” on
page 59.
62 M75q Gen 5 Hardware Maintenance Manual
Removal steps
Rear Wi-Fi antenna
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. For access,
do the following:
1. Remove these parts in order, if any: Chapter 6. Hardware removal and
installation 63
· “External Wi-Fi antenna” on page 54 · “Computer cover” on page 55 2. Remove
any media from the drives and turn off all connected devices and the computer.
3. Disconnect all power cords from electrical outlets and disconnect all
cables from the computer. 4. Disconnect the rear Wi-Fi antenna from the Wi-Fi
card, see “Wi-Fi card” on page 59 Removal steps
Wi-Fi antenna bracket
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool. For access, remove these parts in order,
if any: · “Computer cover” on page 55 · “Front Wi-Fi antenna” on page 62
64 M75q Gen 5 Hardware Maintenance Manual
Removal steps
No.
Screw (quantity)
Color
1
M3 x 3.5 mm, Zi coated(1)
Black
2
M3 x 5 mm, Nickel coated(1)
Silver
Torque 2.5 ± 0.5 lb/in 5 ± 0.5 lb/in
Heat sink
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
The heat sink might be very hot. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool.
For access, remove these parts in order, if any: · “Computer cover” on page 55
· “Internal speaker” on page 57 · “System fan” on page 57
Chapter 6. Hardware removal and installation 65
Removal steps
No.
Screw (quantity)
1
M3 x 13 mm, Nickel coated(4)
Microprocessor
Color Silver
Torque 3.0 ± 0.5 lb/in
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions.
CAUTION:
Avoid contact with hot components inside the computer. During operation, some
components become hot enough to burn the skin. Before you open the computer
cover, turn off the computer, disconnect power, and wait approximately 10
minutes for the components to cool.
Notes:
· Ensure that you install the correct type of CPU option your computer
supports. · Your CPU and CPU carrier might look slightly different from the
illustrations in this topic. · Do not drop anything onto the microprocessor
socket while it is exposed. The socket pins must be kept
as clean as possible.
For access, remove these parts in order, if any:
· “Computer cover” on page 55 · “Internal speaker” on page 57 · “System fan”
on page 57 · “Heat sink” on page 65
66 M75q Gen 5 Hardware Maintenance Manual
Removal steps
Note: Before you attach the CPU to the computer, clean all thermal grease that
has been used and then apply new thermal grease. Apply new thermal grease at
an amount of 0.65 grams, on the parts marked a as shown in the following
illustrations. Either too much or too less application of grease can cause a
thermal problem due to imperfect contact with a component.
System board
Prerequisite Before you start, read Generic Safety and Compliance Notices, and
print the following instructions. CAUTION: Avoid contact with hot components
inside the computer. During operation, some components become hot enough to
burn the skin. Before you open the computer cover, turn off the computer,
disconnect power, and wait approximately 10 minutes for the components to
cool. Notes:
Chapter 6. Hardware removal and installation 67
· Each computer has a unique Vital Product Data (VPD) code stored in the
nonvolatile memory on the system board. After you replace the system board,
the VPD must be updated.
· Your microprocessor sockets and socket covers might look slightly different
from the illustrations in this topic.
· Do not touch the pins on the microprocessor socket or the gold contacts on
the microprocessor.
For access, do the following: 1. Remove these parts in order, if any: ·
“Vertical stand” on page 51. · “Computer cover” on page 55. · “Internal
speaker” on page 57 · “External Wi-Fi antenna” on page 54 · “System fan” on
page 57 · “Board-to-Board module” on page 56 · “ThinkCentre LED cable” on page
58 · “Wi-Fi card” on page 59 · “Memory module” on page 60 · “M.2 solid-state
drive bracket” on page 70 · “M.2 solid-state drive” on page 61 · “M.2 solid-
state drive thermal pad” on page 61 · “Front Wi-Fi antenna” on page 62 · “Rear
Wi-Fi antenna” on page 63 · “Wi-Fi antenna bracket” on page 64 · “Heat sink”
on page 65 2. Record the cable routing and cable connections, and then
disconnect all cables from the system board. See “System board illustration”
on page 48.
68 M75q Gen 5 Hardware Maintenance Manual
Removal steps
No.
Screw (quantity)
Color
1
M3 x 5 mm, Zi coated(3)
Blue
2
M3 x 7 mm, Zi coated(1)
Silver
3
M3 x 11.5 mm, Zi coated(1)
Blue
Torque 5± 0.5 lb/in 5± 0.5 lb/in 5± 0.5 lb/in
When installing: Clean all thermal grease that have been used and then apply
new thermal grease if needed.
Microprocessor socket cover installation procedure
The failing system board must be returned with a microprocessor socket cover
to protect the pins during shipping and handling.
1. After you have removed the microprocessor from the failing system board,
close the microprocessor retainer. Then, put the lever to the locked position
to secure the retainer in place.
2. Note the orientation of the socket cover, and install one side of the
socket cover into the microprocessor socket. Carefully press the other side of
the socket cover downward until the socket cover snaps into position.
Note: The microprocessor socket cover might look slightly different from the
illustration.
3. Carefully check the four corners of the socket cover to ensure that the
cover is seated securely. 4. Follow any additional instructions that are
included with the replacement part you received.
Chapter 6. Hardware removal and installation 69
M.2 solid-state drive bracket
Prerequisite Before you start, read Generic Safety and Compliance Notices and
print the following instructions. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool. For access,
remove these parts in order, if any: · “Computer cover” on page 55 · “System
board” on page 67 Removal steps
70 M75q Gen 5 Hardware Maintenance Manual
Appendix A. Notices and trademarks
Notices
Lenovo may not offer the products, services, or features discussed in this
document in all countries. Consult your local Lenovo representative for
information on the products and services currently available in your area. Any
reference to a Lenovo product, program, or service is not intended to state or
imply that only that Lenovo product, program, or service may be used. Any
functionally equivalent product, program, or service that does not infringe
any Lenovo intellectual property right may be used instead. However, it is the
user’s responsibility to evaluate and verify the operation of any other
product, program, or service.
Lenovo may have patents or pending patent programs covering subject matter
described in this document. The furnishing of this document does not give you
any license to these patents. You can send license inquiries, in writing, to:
Lenovo (United States), Inc. 8001 Development Drive Morrisville, NC 27560
U.S.A. Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some
jurisdictions do not allow disclaimer of express or implied warranties in
certain transactions, therefore, this statement may not apply to you.
Changes are made periodically to the information herein; these changes will be
incorporated in new editions of the publication. To provide better service,
Lenovo reserves the right to improve and/or modify the products and software
programs described in the manuals included with your computer, and the content
of the manual, at any time without additional notice.
The software interface and function and hardware configuration described in
the manuals included with your computer might not match exactly the actual
configuration of the computer that you purchase. For the configuration of the
product, refer to the related contract (if any) or product packing list, or
consult the distributor for the product sales. Lenovo may use or distribute
any of the information you supply in any way it believes appropriate without
incurring any obligation to you.
The products described in this document are not intended for use in
implantation or other life support applications where malfunction may result
in injury or death to persons. The information contained in this document does
not affect or change Lenovo product specifications or warranties. Nothing in
this document shall operate as an express or implied license or indemnity
under the intellectual property rights of Lenovo or third parties. All
information contained in this document was obtained in specific environments
and is presented as an illustration. The result obtained in other operating
environments may vary.
Lenovo may use or distribute any of the information you supply in any way it
believes appropriate without incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for
convenience only and do not in any manner serve as an endorsement of those Web
sites. The materials at those Web sites are not part of the materials for this
Lenovo product, and use of those Web sites is at your own risk.
© Copyright Lenovo 2024
71
Any performance data contained herein was determined in a controlled
environment. Therefore, the result obtained in other operating environments
may vary significantly. Some measurements may have been made on development-
level systems and there is no guarantee that these measurements will be the
same on generally available systems. Furthermore, some measurements may have
been estimated through extrapolation. Actual results may vary. Users of this
document should verify the applicable data for their specific environment.
This document is copyrighted by Lenovo and is not covered by any open source
license, including any Linux® agreement(s) which may accompany software
included with this product. Lenovo may update this document at any time
without notice. For the latest information or any questions or comments,
contact or visit the Lenovo Web site: https://pcsupport.lenovo.com Trademarks
Lenovo, Lenovo logo, ThinkCentre, and ThinkCentre logo are trademarks of
Lenovo. Intel, and Intel Optane are trademarks of Intel Corporation or its
subsidiaries in the U.S. and/or other countries. Linux is the registered
trademark of Linus Torvalds in the U.S. and other countries. Microsoft,
Windows, and Cortana are trademarks of the Microsoft group of companies.
DisplayPort is a trademark of the Video Electronics Standards Association. The
terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or
registered trademarks of HDMI Licensing LLC in the United States and other
countries. USB-C® is a registered trademark of USB Implementers Forum. Wi-Fi
is a registered trademark of Wi-Fi Alliance. All other trademarks are the
property of their respective owners.
72 M75q Gen 5 Hardware Maintenance Manual
References
- Lenovo Computer Parts | Genuine Replacement Parts | Lenovo Support US
- English Community-Lenovo Community
- Official Lenovo Laptop, Accessories & PC Support - Lenovo Support US
- Lenovo Diagnostic Solutions: Overview - Lenovo Support US
- Lenovo Support | Drivers, Troubleshooting, Warranty, Repair | Lenovo Support US
- Page Not Found - Lenovo Support US
- Microsoft Support
- Product Accessibility | Regulatory Compliance | Lenovo US
- Popular Topics: Tips for PC's - Lenovo Support US