Lenovo ThinkCentre A55 Owner's manual

Hardware Maintenance Manual
Types
8013 8700 8701 8702 8705
8706 8716 8717 8970 8972
8973 8975 8976 8979 8980
8982 8983 8985 8986 8991
8992 8994 8995 9265 9266
9269 9276 9277 9278 9279
9282 9283 9286 9287 9288
9374 9378 9379 9380 9383
9384 9387 9389 9628 9631
9632 9635 9637 9646 9647
9648 9649

Hardware Maintenance Manual

Note: Before using this information and the product it supports, be sure to read the
information under “Notices,” on page 609.
Twelfth Edition (August 2008)
© Copyright Lenovo 2005, 2008.
LENOVO products, data, computer software, and services have been developed exclusively at private expense and
are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted
rights to use, reproduction and disclosure.
LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered
pursuant a General Services Administration ″GSA″contract, use, reproduction, or disclosure is subject to restrictions
set forth in Contract No. GS-35F-05925.

Contents
Chapter 1. About this manual .....1
Important Safety Information .........1
Important information about replacing RoHS
compliant FRUs .............2
Chapter 2. Safety information .....3
General safety ..............3
Electrical safety .............3
Safety inspection guide ...........5
Handling electrostatic discharge-sensitive devices . . 6
Grounding requirements ..........6
Safety notices (multi-lingual translations) .....7
Chapter 3. General information ....37
The ThinkVantage Productivity Center program . . 37
Additional information resources .......37
Specifications ..............38
Types 8700, 8701, 8705, 8717, 8973, 8975, 8979,
8983, 8985, 8991, 8995, 9265, 9269, 9277, 9279,
9283, 9287, 9379, 9383, 9387, 9389, 9631, 9635,
9637, 9646, and 9648 ..........38
Types 8013, 8702, 8706, 8716, 8970, 8972, 8976,
8980, 8982, 8986, 8992, 8994, 9266, 9276, 9278,
9282, 9286, 9288, 9374, 9378, 9380, 9384, 9628,
9632, 9647, and 9649 ..........39
Chapter 4. General Checkout .....41
Problem determination tips .........41
Chapter 5. Diagnostics ........43
PC-Doctor for Windows ..........43
PC-Doctor for DOS ............43
Creating a diagnostic CD image ......44
Creating diagnostic diskettes .......44
Running diagnostics from the CD or diskettes . . 44
Running diagnostics from the Rescue and
Recovery workspace ..........45
PC-Doctor for Windows PE .........45
Running diagnostics from the Rescue and
Recovery workspace ..........45
Navigating through the diagnostics programs . . . 46
Running tests..............46
Test results .............46
Fixed disk advanced test (FDAT) ......47
Quick and Full erase - hard drive ......48
Viewing the test log ...........49
Chapter 6. Using the Setup Utility . . . 51
Starting the Setup Utility program.......51
Viewing and changing settings ........51
Using passwords ............51
User Password ............51
Administrator Password .........52
Selecting a startup device..........53
Selecting a temporary startup device .....53
Changing the startup device sequence ....53
Exiting from the Setup Utility program .....53
Chapter 7. Symptom-to-FRU Index . . . 55
Hard disk drive boot error .........55
Power Supply Problems ..........55
Diagnostic error codes...........57
Beep symptoms .............78
POST error codes ............79
Miscellaneous error messages ........81
Undetermined problems ..........82
Chapter 8. Replacing FRUs (desktop
computers) .............85
Rear connectors .............86
Removing the cover ...........87
Locations ...............88
Identifying parts on the system board .....89
Machine types 8013, 8716, 8976, 8986, 9266, 9282,
9374, 9384, 9646, and 9647 ........89
Machine types 8706, 8972, 8982, 8994, 9278, 9288,
9380, 9632, 9648, and 9649 ........90
Machine types 8702, 8970, 8980, 8992, 9276, 9286,
9378, and 9628 ............91
Replacing a memory module ........91
Replacing the CMOS battery.........94
Replacing the power supply .........94
Replacing the system board .........97
Types 8702, 8706, 8970, 8972, 8980, 8982, 8992,
8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628,
9632, and 9649 ............97
Types 8013, 8716, 8976, 8986, 9266, 9282, 9374,
9384, and 9647 ............101
Replacing the microprocessor ........105
Types 8702, 8706, 8970, 8972, 8980, 8982, 8992,
8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628,
9632, and 9649 ............105
Types 8013, 8716, 8976, 8986, 9266, 9282, 9374,
9384, and 9647 ............108
Replacing the hard disk drive ........112
Replacing an optical drive .........115
Replacing the diskette drive ........117
Replacing the power switch/LED assembly . . . 119
Replacing the front panel card........121
Replacing the system fan assembly ......122
Replacing a PCI adapter..........124
Completing the FRU replacement ......124
Chapter 9. Replacing FRUs (tower
computers) ............127
Rear connectors ............128
Removing the cover ...........129
Locations...............130
Identifying parts on the system board .....130
© Copyright Lenovo 2005, 2008 iii

Machine types 8700, 8717, 8979, 8991, 9269,
9283, 9383, 9631, and 9646 ........131
Machine types 8705, 8975, 8985, 9265, 9279,
9379, 9389, 9637, and 9648 ........132
Machine types 8701, 8973, 8983, 8995, 9277,
9287, 9387, and 9635 ..........133
Removing and replacing the front bezel ....133
Replacing the power supply ........134
Replacing the system board ........135
Types 8701, 8705, 8973, 8975, 8983, 8985, 8995,
9265, 9277, 9279, 9287, 9379, 9387, 9389, 9635,
9637, and 9648 ............135
Types 8700, 8717, 8979, 8991, 9269, 9283, 9383,
9631, and 9646 ............140
Replacing the microprocessor ........143
Types 8701, 8705, 8973, 8975, 8983, 8985, 8995,
9265, 9277, 9279, 9287, 9379, 9387, 9389, 9635,
9637, and 9648 ............143
Types 8700, 8717, 8979, 8991, 9269, 9283, 9383,
9631, and 9646 ............147
Replacing a memory module ........151
Replacing a PCI adapter..........152
Replacing the hard disk drive ........153
Replacing an optical drive .........156
Replacing the diskette drive ........157
Replacing the system fan assembly ......157
Replacing the front audio/USB assembly ....159
Replacing the power switch/LED assembly . . . 159
Replacing the CMOS battery ........159
Completing the FRU replacement ......160
Chapter 10. FRU lists ........161
Machine Type 8013 ...........161
Machine Type 8700 ...........169
Machine Type 8701 ...........179
Machine Type 8702 ...........189
Machine Type 8705 ...........199
Machine Type 8706 ...........211
Machine Type 8970 ...........221
Machine Type 8972 ...........230
Machine Type 8973 ...........239
Machine Type 8975 ...........248
Machine Type 8976 ...........257
Machine Type 8979 ...........264
Machine Type 8980 ...........273
Machine Type 8982 ...........282
Machine Type 8983 ...........292
Machine Type 8985 ...........301
Machine Type 8986 ...........311
Machine Type 8991 ...........319
Machine Type 8992 ...........329
Machine Type 8994 ...........339
Machine Type 8995 ...........350
Machine Type 9265 ...........359
Machine Type 9266 ...........370
Machine Type 9269 ...........379
Machine Type 9276 ...........389
Machine Type 9277 ...........397
Machine Type 9278 ...........406
Machine Type 9279 ...........417
Machine Type 9282 ...........427
Machine Type 9283 ...........435
Machine Type 9286 ...........444
Machine Type 9287 ...........452
Machine Type 9288 ...........461
Machine Type 9374 ...........470
Machine Type 9378 ...........480
Machine Type 9379 ...........489
Machine Type 9380 ...........498
Machine Type 9383 ...........507
Machine Type 9384 ...........516
Machine Type 9387 ...........528
Machine Type 9389 ...........537
Machine Type 9628 ...........547
Machine Type 9631 ...........556
Machine Type 9632 ...........567
Machine Type 9635 ...........580
Machine Type 9637 ...........590
Chapter 11. Additional Service
Information ............605
Security features ............605
Hardware controlled Passwords ......605
Operating system password .......605
Vital product data ...........605
Management Information Format (MIF) . . . 605
BIOS levels ..............606
Flash update procedures..........606
Updating (flashing) BIOS from a diskette . . . 606
Recovering from a POST/BIOS update failure . . 606
Power management ...........607
Automatic configuration and power interface
(ACPI) BIOS.............607
Automatic Power-On features .......607
Appendix. Notices .........609
Television output notice ..........610
Trademarks ..............610
iv Hardware Maintenance Manual

Chapter 1. About this manual
This manual contains service and reference information for ThinkCentre®
computers listed on the cover. It is intended only for trained servicers who are
familiar with Lenovo computer products.
Before servicing a Lenovo product, be sure to read the Safety Information. See
Chapter 2, “Safety information,” on page 3.
The Symptom-to-FRU Index and Additional Service Information chapters are not
specific to any machine type and are applicable to all ThinkCentre computers.
This manual includes a complete FRU part number listing for each machine type
and model listed on the cover. If you have internet access, FRU part numbers are
also available at:
http:/www.lenovo.com/support
Important Safety Information
Be sure to read all caution and danger statements in this book before performing
any of the instructions.
Veuillez lire toutes les consignes de type DANGER et ATTENTION du présent
document avant d’exécuter les instructions.
Lesen Sie unbedingt alle Hinweise vom Typ ″ACHTUNG″oder ″VORSICHT″in
dieser Dokumentation, bevor Sie irgendwelche Vorgänge durchführen
Leggere le istruzioni introdotte da ATTENZIONE e PERICOLO presenti nel
manuale prima di eseguire una qualsiasi delle istruzioni
Certifique-se de ler todas as instruções de cuidado e perigo neste manual antes de
executar qualquer uma das instruções
Es importante que lea todas las declaraciones de precaución y de peligro de este
manual antes de seguir las instrucciones.
© Copyright Lenovo 2005, 2008 1

Important information about replacing RoHS compliant FRUs
RoHS, The Restriction of Hazardous Substances in Electrical and Electronic
Equipment Directive (2002/95/EC) is a European Union legal requirement
affecting the global electronics industry. RoHS requirements must be
implemented on Lenovo products placed on the market after June 2006. Products
on the market before June 2006 are not required to have RoHS compliant parts.
So, if the parts are not compliant originally, replacement parts can also be
noncompliant, but in all cases, if the parts are compliant, the replacement parts
must also be compliant.
Lenovo plans to transition to RoHS compliance well before the implementation
date and expects its suppliers to be ready to support Lenovo’s requirements and
schedule. Products sold in 2005, will contain some RoHS compliant FRUs. The
following statement pertains to these products and any product Lenovo produces
containing RoHS compliant parts.
RoHS compliant ThinkCentre parts have unique FRU part numbers. Before or after
June, 2006, failed RoHS compliant parts must always be replaced using RoHS
compliant FRUs, so only the FRUs identified as compliant in the system HMM or
direct substitutions for those FRUs can be used.
Products marketed before June 2006 Products marketed after June 2006
Current or original
part
Replacement FRU Current or original
part
Replacement FRU
Non-RoHS Can be Non-RoHS Must be RoHS Must be RoHS
Non-RoHS Can be RoHS
Non-RoHS Can sub to RoHS
RoHS Must be RoHS
Note: A direct substitution is a part with a different FRU part number that is
automatically shipped by the distribution center at the time of order.
2Hardware Maintenance Manual

Chapter 2. Safety information
This chapter contains the safety information that you need to be familiar with
before servicing a computer.
General safety
Follow these rules to ensure general safety:
vObserve good housekeeping in the area of the machines during and after
maintenance.
vWhen 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. 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.
vDo not perform any action that causes hazards to the customer, or that makes
the equipment unsafe.
vBefore you start the machine, ensure that other service representatives and the
customer’s personnel are not in a hazardous position.
vPlace removed covers and other parts in a safe place, away from all personnel,
while you are servicing the machine.
vKeep your tool case away from walk areas so that other people will not trip over
it.
vDo 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.
vInsert the ends of your necktie or scarf inside clothing or fasten it with a
nonconductive clip, approximately 8 centimeters (3 inches) from the end.
vDo not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your
clothing.
Remember: Metal objects are good electrical conductors.
vWear 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.
vAfter service, reinstall all safety shields, guards, labels, and ground wires.
Replace any safety device that is worn or defective.
vReinstall all covers correctly before returning the machine to the customer.
Electrical safety
© Copyright Lenovo 2005, 2008 3

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 server/workstation 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.
vFind 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.
vDo not work alone under hazardous conditions or near equipment that has
hazardous voltages.
vDisconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing main units
vBefore 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.
vIf 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 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.
vRegularly inspect and maintain your electrical hand tools for safe operational
condition.
vDo not use worn or broken tools and testers.
vNever assume that power has been disconnected from a circuit. First, check that it
has been powered-off.
4Hardware Maintenance Manual

vAlways 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.
vDo 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.
vDo not service the following parts with the power on 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.)
vIf 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:
vElectrical hazards, especially primary power (primary voltage on the frame can
cause serious or fatal electrical shock).
vExplosive hazards, such as a damaged CRT face or bulging capacitor
vMechanical 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.
Chapter 2. Safety information 5

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.
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:
vKeep the parts in protective packages until they are inserted into the product.
vAvoid contact with other people.
vWear a grounded wrist strap against your skin to eliminate static on your body.
vPrevent the part from touching your clothing. Most clothing is insulative and
retains a charge even when you are wearing a wrist strap.
vUse 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.
vSelect 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.
6Hardware Maintenance Manual

Safety notices (multi-lingual translations)
The caution and danger safety notices in this section are provided in the following
languages:
vEnglish
vArabic
vBrazilian/Portuguese
vChinese (simplified)
vChinese (traditional)
vFrench
vGerman
vHebrew
vItalian
vKorean
vSpanish
DANGER
Electrical current from power, telephone and communication cables is hazardous.
To avoid a shock hazard:
vDo not connect or disconnect any cables or perform installation, maintenance,
or reconfiguration of this product during an electrical storm.
vConnect all power cords to a properly wired and grounded electrical outlet.
vConnect to properly wired outlets any equipment that will be attached to this
product.
vWhen possible, use one hand only to connect or disconnect signal cables.
vNever turn on any equipment when there is evidence of fire, water, or
structural damage.
vDisconnect the attached power cords, telecommunications systems, networks,
and modems before you open the device covers, unless instructed otherwise
in the installation and configuration procedures.
vConnect and disconnect cables as described in the following tables when
installing, moving, or opening covers on this product or attached devices.
To Connect To Disconnect
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.
1. Turn everything OFF.
2. First, remove power cords from outlet.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
Chapter 2. Safety information 7

CAUTION:
When replacing the lithium battery, use only Part Number 33F8354 or an
equivalent type battery recommended by the manufacturer. If your system has a
module containing a lithium battery, replace it only with the same module type
made by the same manufacturer. The battery contains lithium and can explode if
not properly used, handled, or disposed of.
Do not:
vThrow or immerse into water
vHeat to more than 100°C (212°F)
vRepair or disassemble
Dispose of the battery as required by local ordinances or regulations.
CAUTION:
When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices,
or transmitters) are installed, note the following:
vDo 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.
vUse 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 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs)
CAUTION:
Use safe practices when lifting.
8Hardware Maintenance Manual

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.
1
2
Chapter 2. Safety information 9

10 Hardware Maintenance Manual

Chapter 2. Safety information 11

≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs)
1
2
12 Hardware Maintenance Manual

PERIGO
A corrente elétrica proveniente de cabos de alimentação, de telefone e de
comunicações é perigosa.
Para evitar risco de choque elétrico:
vNão conecte nem desconecte nenhum cabo ou execute instalação, manutenção
ou reconfiguração deste produto durante uma tempestade com raios.
vConecte todos os cabos de alimentação a tomadas elétricas corretamente
instaladas e aterradas.
vTodo equipamento que for conectado a este produto deve ser conectado a
tomadas corretamente instaladas.
vQuando possível, utilize apenas uma das mãos para conectar ou desconectar
cabos de sinal.
vNunca ligue nenhum equipamento quando houver evidência de fogo, água ou
danos estruturais.
vAntes 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.
vConecte 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: Para Desconectar:
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.
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.
Chapter 2. Safety information 13

CUIDADO:
Ao substituir a bateria de lítio, utilize apenas uma bateria com Número de Peça
33F8354 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:
vJogue ou coloque na água
vAqueça a mais de 100°C (212°F)
vConserte nem desmonte
Descarte a bateria conforme requerido pelas leis ou regulamentos locais.
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:
vNão 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.
vA 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 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs)
CUIDADO:
Utilize procedimentos de segurança para levantar equipamentos.
14 Hardware Maintenance Manual