Lenovo ThinkStation P720 Owner's manual

P720 Hardware Maintenance Manual
Machine Types: 30BA, 30BB, and 30BU

Note: Before using this information and the product it supports, be sure to read and understand the hapter
1 “Read this first: Important safety information” on page 1 and Appendix G “Notices” on page 243.
First Edition (October 2017)
© Copyright enovo 2017.
LIMITED AND RESTRI TED RIGHTS NOTI E: 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 ontract No. GS-
35F-05925.

Contents
About this manual . . . . . . . . . . . . . . . iv
Chapter 1. Read this first: Important
safety information . . . . . . . . . . . . 1
Power cords and power adapters . . . . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 2
Safety inspection guide . . . . . . . . . . . . . 3
Handling electrostatic discharge-sensitive
devices . . . . . . . . . . . . . . . . . . . 4
Grounding requirements . . . . . . . . . . . . 5
Safety notices (multi-lingual translations) . . . . . . 5
Chapter 2. Product overview . . . . . 29
Hardware locations . . . . . . . . . . . . . 29
Front view . . . . . . . . . . . . . . . 29
Rear view . . . . . . . . . . . . . . . 31
omputer components . . . . . . . . . . 34
Major FRUs and RUs . . . . . . . . . . 34
Parts on the system board . . . . . . . . . 38
Internal storage drives . . . . . . . . . . 40
Machine type and model label . . . . . . . 42
omputer features. . . . . . . . . . . . . . 42
omputer specifications . . . . . . . . . . . 45
Programs . . . . . . . . . . . . . . . . . 46
Accessing a program on your computer . . . 46
Installing a program that is ready to be
installed (Windows 7 only) . . . . . . . . . 47
An introduction to Lenovo programs . . . . . 47
Chapter 3. Using your computer . . . 49
Registering your computer . . . . . . . . . . 49
Setting the computer volume . . . . . . . . . 49
Using a disc . . . . . . . . . . . . . . . . 49
Guidelines about using the optical drive . . . 49
Handling and storing a disc . . . . . . . . 49
Playing and removing a disc . . . . . . . . 50
Recording a disc . . . . . . . . . . . . 50
onnecting to a network . . . . . . . . . . . 51
Chapter 4. You and your computer . . 53
Arranging your workspace . . . . . . . . . . 53
Glare and lighting . . . . . . . . . . . . 53
Air circulation . . . . . . . . . . . . . . 53
Electrical outlet locations and cable lengths . . 53
omfort . . . . . . . . . . . . . . . . 53
Accessibility information . . . . . . . . . . . 54
leaning your computer . . . . . . . . . . . 57
Maintenance . . . . . . . . . . . . . . . . 57
Basic maintenance tips . . . . . . . . . . 57
Good maintenance practices . . . . . . . . 58
Keeping your computer current . . . . . . . 58
Moving your computer . . . . . . . . . . . . 59
Chapter 5. Security . . . . . . . . . . 61
Locking your computer . . . . . . . . . . . . 61
Locking the computer cover . . . . . . . . 61
Attaching a Kensington-style cable lock . . . 63
Viewing and changing security settings in the
Setup Utility program . . . . . . . . . . . . 63
Using passwords and Windows accounts . . . . 63
Using fingerprint authentication . . . . . . . . 64
Using the cover presence switch . . . . . . . . 64
Using firewalls . . . . . . . . . . . . . . . 65
Protecting data against viruses . . . . . . . . . 65
Using the Smart USB Protection function . . . . . 65
omputrace Agent software embedded in
firmware. . . . . . . . . . . . . . . . . . 66
Trusted Platform Module (TPM). . . . . . . . . 66
Intel BIOS guard . . . . . . . . . . . . . . 66
Chapter 6. Advanced
configuration. . . . . . . . . . . . . . 67
Using the Setup Utility program . . . . . . . . 67
Starting the Setup Utility program . . . . . . 67
hanging the display mode of the Setup Utility
program . . . . . . . . . . . . . . . . 67
hanging the display language of the Setup
Utility program . . . . . . . . . . . . . 67
Enabling or disabling a device . . . . . . . 68
Enabling or disabling the automatic power-on
of your computer . . . . . . . . . . . . 68
Enabling or disabling the ErP LPS compliance
mode . . . . . . . . . . . . . . . . . 68
Enabling or disabling the configuration change
detection . . . . . . . . . . . . . . . 69
hanging the BIOS settings before installing a
new operating system . . . . . . . . . . 69
Using BIOS passwords . . . . . . . . . . 69
Selecting a startup device . . . . . . . . . 71
hanging the fan speed level. . . . . . . . 72
Exiting the Setup Utility program . . . . . . 72
Updating and recovering the BIOS . . . . . . . 72
BIOS level . . . . . . . . . . . . . . . . . 73
onfiguring RAID . . . . . . . . . . . . . . 74
An Introduction to RAID . . . . . . . . . . 74
onfiguring RAID with Intel RSTe . . . . . . 74
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onfiguring RAID with AVAGO MegaRAID
onfiguration Utility . . . . . . . . . . . 76
onfiguring RAID with Intel Virtual RAID on
PU . . . . . . . . . . . . . . . . . 78
Chapter 7. Troubleshooting,
diagnostics, and recovery . . . . . . . 81
Basic procedure for resolving computer
problems . . . . . . . . . . . . . . . . . 81
Troubleshooting . . . . . . . . . . . . . . 81
Startup problems . . . . . . . . . . . . 81
Audio problems . . . . . . . . . . . . . 82
D or DVD problems . . . . . . . . . . . 83
Intermittent problems. . . . . . . . . . . 84
Storage drive problems . . . . . . . . . . 84
Ethernet LAN problems . . . . . . . . . . 84
Wireless LAN problem . . . . . . . . . . 85
Bluetooth problems . . . . . . . . . . . 86
Performance problems . . . . . . . . . . 87
Serial connector problem . . . . . . . . . 88
USB device problem . . . . . . . . . . . 88
Software and driver problems . . . . . . . 89
Diagnosing problems . . . . . . . . . . . . 89
UEFI diagnostic program . . . . . . . . . . . 91
Recovery information . . . . . . . . . . . . 91
Chapter 8. Service checkout and
symptom-to-FRU index . . . . . . . . 95
Service checkout . . . . . . . . . . . . . . 95
Problem determination tips . . . . . . . . 95
Symptom-to-FRU index . . . . . . . . . . . 96
Hard disk drive boot error . . . . . . . . . 96
Power supply problems . . . . . . . . . . 97
Beep symptoms . . . . . . . . . . . . . 97
POST error codes . . . . . . . . . . . . 98
Miscellaneous error conditions . . . . . . . 99
Undetermined problems . . . . . . . . . 101
Chapter 9. Hardware removal and
installation . . . . . . . . . . . . . . . 103
Handling static-sensitive devices . . . . . . . . 103
Preparing your computer and removing the
computer cover . . . . . . . . . . . . . . . 103
Removing and installing hardware . . . . . . . 104
External options . . . . . . . . . . . . . 104
Device in the flex bay . . . . . . . . . . . 105
Storage drive in the front-access storage
enclosure . . . . . . . . . . . . . . . 107
Device in the multi-drive conversion kit . . . . 114
Flex-bay bracket . . . . . . . . . . . . 125
over presence switch . . . . . . . . . . 127
3.5-inch storage drive in the storage drive
bay . . . . . . . . . . . . . . . . . . 129
2.5-inch storage drive in the storage drive
bay . . . . . . . . . . . . . . . . . . 133
2.5-inch storage drive with a converter in the
storage drive bay . . . . . . . . . . . . 138
M.2 solid-state drive . . . . . . . . . . . 146
Power supply assembly . . . . . . . . . . 156
P Ie card . . . . . . . . . . . . . . . 158
Full-length P Ie card . . . . . . . . . . . 164
Super capacitor module. . . . . . . . . . 167
Front fan assembly. . . . . . . . . . . . 169
Rear fan assembly . . . . . . . . . . . . 171
Memory module . . . . . . . . . . . . . 174
oin-cell battery. . . . . . . . . . . . . 178
Wi-Fi units . . . . . . . . . . . . . . . 180
Device in the 5.25-inch flex module . . . . . 185
Storage drives in optional storage drive
bays . . . . . . . . . . . . . . . . . 200
Heat-sink-and-fan assembly . . . . . . . . 203
Microprocessor . . . . . . . . . . . . . 207
System board. . . . . . . . . . . . . . 211
VRO upgrade key module . . . . . . . . 214
Front panel I/O cable . . . . . . . . . . . 215
Internal speaker . . . . . . . . . . . . . 218
ompleting the parts replacement . . . . . . . 220
Chapter 10. Getting information,
help, and service . . . . . . . . . . . . 223
Information resources . . . . . . . . . . . . 223
Accessing the user guide in various
languages . . . . . . . . . . . . . . . 223
Windows help system . . . . . . . . . . 223
Safety and warranty . . . . . . . . . . . 223
Lenovo Web site. . . . . . . . . . . . . 223
Lenovo Support Web site . . . . . . . . . 224
Frequently asked questions . . . . . . . . 224
Help and service . . . . . . . . . . . . . . 224
alling for service . . . . . . . . . . . . 224
Using other services . . . . . . . . . . . 225
Purchasing additional services . . . . . . . 225
Appendix A. System memory
speed. . . . . . . . . . . . . . . . . . 227
Appendix B. Supplemental
information about the Ubuntu operating
system . . . . . . . . . . . . . . . . . 229
Appendix C. Regulatory
information. . . . . . . . . . . . . . . 231
Export classification notice . . . . . . . . . . 231
ii P720 Hardware Maintenance Manual

Electronic emissions notices. . . . . . . . . . 231
Federal ommunications ommission
Declaration of onformity . . . . . . . . . 231
Eurasian compliance mark . . . . . . . . . . 233
Brazil audio notice . . . . . . . . . . . . . . 233
Mexico wireless-radio compliance information. . . 234
Additional regulatory information . . . . . . . . 234
Appendix D. WEEE and recycling
information. . . . . . . . . . . . . . . 235
Important WEEE information. . . . . . . . . . 235
Recycling information for Japan . . . . . . . . 235
Recycling information for Brazil. . . . . . . . . 236
Battery recycling information for Taiwan . . . . . 236
Battery recycling information for the European
Union . . . . . . . . . . . . . . . . . . . 237
Appendix E. Restriction of
Hazardous Substances (RoHS)
Directive . . . . . . . . . . . . . . . . 239
Appendix F. ENERGY STAR model
information. . . . . . . . . . . . . . . 241
Appendix G. Notices. . . . . . . . . . 243
Trademarks . . . . . . . . . . . . . . . ccxlv
© opyright Lenovo 2017 iii

About this manual
This manual provides service and reference information for ThinkStation® computers listed on the front
cover.
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 ThinkStation
computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
Before servicing a ThinkStation computer, be sure to read and understand hapter 1 “Read this first:
Important safety information” on page 1.

Chapter 1. Read this first: Important safety information
This chapter contains the safety information that you must be familiar with.
Power cords and power adapters
Use only the power cords and power adapters supplied by the product manufacturer. Do not use the ac
power cord for other devices.
The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm2, or better. For
other countries, the suitable types shall be used accordingly.
Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that
can cause the cord to fray, crack, or crimp. This can present a safety hazard.
Always route power cords so that they will not be walked on, tripped over, or pinched by objects.
Protect power cord and power adapters from liquids. For instance, do not leave your power cord or power
adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a short
circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can cause
gradual corrosion of power cord terminals and/or the connector terminals on a power adapter, which can
eventually result in overheating.
Ensure that all power cord connectors are securely and completely plugged into receptacles.
Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating (such
as deformed plastic) at the ac input or anywhere on the power adapter.
Do not use any power cords where the electrical contacts on either end show signs of corrosion or
overheating or where the power cord appears to have been damaged in any way.
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.
© opyright Lenovo 2017 1

• 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.
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)
2P720 Hardware Maintenance Manual

• 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:
– 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.
onsider these conditions and the safety hazards they present:
hapter 1.Read this first: Important safety information 3

• Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal
electrical shock).
• Explosive hazards, such as a damaged RT 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.
hecklist:
1. heck exterior covers for damage (loose, broken, or sharp edges).
2. Power-off the computer. Disconnect the power cord.
3. heck 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. heck for any obvious alterations. Use good judgment as to the safety of any alterations.
6. heck 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. heck for worn, frayed, or pinched cables.
8. heck 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 (I s) 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.
4P720 Hardware Maintenance Manual

– 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
• hinese (simplified)
• hinese (traditional)
• French
• German
• Hebrew
• Italian
• Korean
• 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.
hapter 1.Read this first: Important safety information 5

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.
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:
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:
aser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.
6P720 Hardware Maintenance Manual

≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)
CAUTION:
Use safe practices when lifting.
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
hapter 1.Read this first: Important safety information 7

8P720 Hardware Maintenance Manual

≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)
1
2
hapter 1.Read this first: Important safety information 9

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.
• onecte 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.
• onecte 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. onecte os cabos de sinal aos conectores.
4. onecte 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.
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° (212°F)
• onserte nem desmonte
Descarte a bateria conforme requerido pelas leis ou regulamentos locais.
PRECAUCIÓN:
10 P720 Hardware Maintenance Manual

Quando produtos a laser (como unidades de D-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 lasse 3A ou da lasse 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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hapter 1.Read this first: Important safety information 11

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hapter 1.Read this first: Important safety information 13

14 P720 Hardware Maintenance Manual