Lenovo ThinkCentre A61 Hardware Maintenance Manual

Type
Hardware Maintenance Manual
ThinkCentre
Hard ware Maintenance Manual
Note: Before using this information and the product it supports, be sure to read and
understand the information under “Notices,” on page 399.
Tenth Edition (January 2009)
© Copyright Lenovo 2005, 2009.
Portions © Copyright International Business Machines Corporation 2005.
All rights reserved.
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
Voltage-selection switch . . . . . . . . . . .5
Safety inspection guide . . . . . . . . . . .5
Handling electrostatic discharge-sensitive devices . .6
Grounding requirements . . . . . . . . . .7
Safety notices (multi-lingual translations) . . . . .7
Chapter 3. General information . . . .39
The ThinkVantage Productivity Center program . .39
Additional information resources . . . . . . .39
Specifications . . . . . . . . . . . . . .40
Machine types: 9120, 9127, 9129, 9134, 9136, 9139,
9141, 9143, 9156, 9158, 9171, and 9191. . . . .40
Machine types: 9126, 9128, 9130, 9135, 9137, 9140,
9142, 9144, 9157, 9159, 9169, and 9189. . . . .41
Chapter 4. General Checkout . . . . .43
Problem determination tips . . . . . . . . .43
Chapter 5. Diagnostics . . . . . . . .45
PC-Doctor for Windows . . . . . . . . . .45
PC-Doctor for Windows PE . . . . . . . . .45
Running diagnostics from the Rescue and
Recovery workspace . . . . . . . . . .46
PC-Doctor for DOS . . . . . . . . . . . .46
Creating a diagnostic CD image . . . . . .46
Creating diagnostic diskettes . . . . . . .46
Running diagnostics from the CD or diskettes . .47
Navigating through the diagnostics programs . .47
Running tests . . . . . . . . . . . . .47
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
Password considerations . . . . . . . . .51
User Password . . . . . . . . . . . .52
Administrator Password . . . . . . . . .52
Setting, changing, and deleting a password . . .52
Selecting a startup device . . . . . . . . . .52
Selecting a temporary startup device . . . . .52
Selecting or changing the startup device sequence 53
Advanced settings . . . . . . . . . . . .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 (Machine
types: 9120, 9127, 9129, 9134, 9136,
9139, 9141, 9143, 9156, 9158, 9171, and
9191.) . . . . . . . . . . . . . . .85
Rear connectors . . . . . . . . . . . . .86
Removing the computer cover . . . . . . . .87
Locations . . . . . . . . . . . . . . .88
Locating parts on the system board . . . . . .89
Removing and reinstalling the front bezel . . . .89
Replacing the power supply . . . . . . . . .90
Replacing the system board . . . . . . . . .92
Replacing the microprocessor . . . . . . . .96
Replacing a memory module . . . . . . . .99
Replacing a PCI adapter card . . . . . . . . 100
Replacing the hard disk drive . . . . . . . . 102
Replacing the optical drive . . . . . . . . . 105
Replacing the diskette drive . . . . . . . . 106
Replacing the front fan assembly . . . . . . . 107
Replacing the rear fan assembly . . . . . . .110
Replacing the front audio/USB assembly . . . . 111
Replacing the power switch/LED assembly . . .112
Replacing the CMOS battery . . . . . . . .113
Completing the FRU replacement . . . . . . .114
Chapter 9. Replacing FRUs (Machine
types: 9126, 9128, 9130, 9135, 9137,
9140, 9142, 9144, 9157, 9159, 9169,
and 9189.) . . . . . . . . . . . . .115
Rear connectors . . . . . . . . . . . .116
Removing the computer cover . . . . . . . .117
Locations . . . . . . . . . . . . . . .118
Locating parts on the system board . . . . . .119
Accessing the system board components and drives 119
Replacing a memory module . . . . . . . . 121
Replacing the CMOS battery . . . . . . . . 123
Replacing the power supply . . . . . . . . 124
Replacing the system board . . . . . . . . 126
Replacing the microprocessor . . . . . . . . 129
Replacing the hard disk drive . . . . . . . . 132
Replacing the optical drive . . . . . . . . . 134
Replacing the diskette drive . . . . . . . . 135
Replacing the power switch/LED assembly . . . 136
Replacing the front panel card . . . . . . . . 137
Replacing the system fan assembly . . . . . . 138
Replacing a PCI adapter card . . . . . . . . 139
Completing the FRU replacement . . . . . . 140
© Lenovo 2005, 2009. Portions © IBM Corp. 2005. iii
Chapter 10. FRU lists . . . . . . . . 141
Machine Type 9120 . . . . . . . . . . . 141
Machine Type 9126 . . . . . . . . . . . 155
Machine Type 9129 . . . . . . . . . . . 164
Machine Type 9134 . . . . . . . . . . . 173
Machine Type 9135 . . . . . . . . . . . 185
Machine Type 9136 . . . . . . . . . . . 194
Machine Type 9137 . . . . . . . . . . . 207
Machine Type 9140 . . . . . . . . . . . 220
Machine Type 9141 . . . . . . . . . . . 233
Machine Type 9142 . . . . . . . . . . . 246
Machine Type 9143 . . . . . . . . . . . 259
Machine Type 9144 . . . . . . . . . . . 274
Machine Type 9156 . . . . . . . . . . . 289
Machine Type 9157 . . . . . . . . . . . 303
Machine Type 9158 . . . . . . . . . . . 314
Machine Type 9159 . . . . . . . . . . . 328
Machine Type 9169 . . . . . . . . . . . 342
Machine Type 9171 . . . . . . . . . . . 355
Machine Type 9189 . . . . . . . . . . . 369
Machine Type 9191 . . . . . . . . . . . 382
Chapter 11. Additional Service
Information . . . . . . . . . . . . 395
Security features . . . . . . . . . . . . 395
Hardware controlled Passwords . . . . . . 395
Operating system password . . . . . . . 395
Vital product data . . . . . . . . . . . 395
BIOS levels . . . . . . . . . . . . . . 395
Flash update procedures . . . . . . . . . . 396
Updating (flashing) BIOS from a diskette . . . 396
Recovering from a POST/BIOS update failure . . 396
Power management . . . . . . . . . . . 397
Automatic configuration and power interface
(ACPI) BIOS . . . . . . . . . . . . . 397
Automatic Power-On features . . . . . . . 397
Appendix. Notices . . . . . . . . . 399
Television output notice . . . . . . . . . . 400
Trademarks . . . . . . . . . . . . . . 400
iv Hardware Maintenance Manual
Chapter 1. About this manual
This manual contains service and reference information for ThinkCentre
®
computers listed on the front cover. It is intended only for trained Service
Providers who are familiar with Lenovo
®
computer products.
Before servicing a Lenovo product, be sure to read and understand the 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 front 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.
© Lenovo 2005, 2009. Portions © IBM Corp. 2005. 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 and sold in the
European Union after June 2006. Products on the market before June 2006 are
not required to have RoHS compliant parts. 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.
Note: RoHS and non-RoHS FRU part numbers with the same fit and function are
identified with unique FRU part numbers.
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 in the EU. 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.
2 Hardware 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:
v Observe good housekeeping in the area of the machines during and after
maintenance.
v 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. 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.
v
Do not perform any action that causes hazards to the customer, or that makes
the equipment unsafe.
v Before you start the machine, ensure that other service representatives and the
customer’s personnel are not in a hazardous position.
v Place removed covers and other parts in a safe place, away from all personnel,
while you are servicing the machine.
v Keep your tool case away from walk areas so that other people will not trip over
it.
v 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.
v 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.
v Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your
clothing.
Remember: Metal objects are good electrical conductors.
v 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.
v After service, reinstall all safety shields, guards, labels, and ground wires.
Replace any safety device that is worn or defective.
v Reinstall all covers correctly before returning the machine to the customer.
Electrical safety
© Lenovo 2005, 2009. Portions © IBM Corp. 2005. 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.
v 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.
v Do not work alone under hazardous conditions or near equipment that has
hazardous voltages.
v Disconnect all power before:
Performing a mechanical inspection
Working near power supplies
Removing or installing Field Replaceable Units
v
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.
v 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 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.
v Regularly inspect and maintain your electrical hand tools for safe operational
condition.
v Do not use worn or broken tools and testers.
v Never assume that power has been disconnected from a circuit. First, check that it
has been powered-off.
4 Hardware Maintenance Manual
v 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.
v 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.
v 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.)
v If an electrical accident occurs:
Use caution; do not become a victim yourself.
Switch off power.
Send another person to get medical aid.
Voltage-selection switch
Some computers are equipped with a voltage-selection switch located near the
power-cord connection point on the computer. If your computer has a
voltage-selection switch, ensure that you set the switch to match the voltage
available at your electrical outlet. Setting the voltage-selection switch incorrectly
can cause permanent damage to the computer.
If your computer does not have a voltage-selection switch, your computer is
designed to operate only at the voltage provided in the country or region where
the computer was originally purchased.
If you relocate your computer to another country, be aware of the following:
v If your computer does not have a voltage-selection switch, do not connect the
computer to an electrical outlet until you have verified that the voltage provided
is the same as it was in the country or region where the computer was originally
purchased.
v If your computer has a voltage selection switch, do not connect the computer to
an electrical outlet until you have verified that the voltage-selection switch is set
to match the voltage provided in that country or region.
If
you are not sure of the voltage provided at your electrical outlet, contact your
local electric company or refer to official Web sites or other literature for travelers
to the country or region where you are located.
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.
Chapter 2. Safety information 5
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:
v Electrical hazards, especially primary power (primary voltage on the frame can
cause serious or fatal electrical shock).
v Explosive hazards, such as a damaged CRT face or bulging capacitor
v 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.
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:
v Keep the parts in protective packages until they are inserted into the product.
v Avoid contact with other people while handling the part.
v Wear a grounded wrist strap against your skin to eliminate static on your body.
6 Hardware Maintenance Manual
v Prevent the part from touching your clothing. Most clothing is insulative and
retains a charge even when you are wearing a wrist strap.
v 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.
v 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:
v English
v Arabic
v Brazilian/Portuguese
v Chinese (simplified)
v Chinese (traditional)
v French
v German
v Hebrew
v Italian
v Korean
v Spanish
DANGER
Electrical current from power, telephone and communication cables is hazardous.
To avoid a shock hazard:
v Do not connect or disconnect any cables or perform installation, maintenance,
or reconfiguration of this product during an electrical storm.
v Connect all power cords to a properly wired and grounded electrical outlet.
Chapter 2. Safety information 7
v Connect to properly wired outlets any equipment that will be attached to this
product.
v When possible, use one hand only to connect or disconnect signal cables.
v Never turn on any equipment when there is evidence of fire, water, or
structural damage.
v 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.
v Connect 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.
8 Hardware Maintenance Manual
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:
v Throw or immerse into water
v Heat to more than 100°C (212°F)
v 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:
v 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.
v 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 lbs) 32 kg (70.5 lbs) 55 kg (121.2 lbs)
CAUTION:
Use safe practices when lifting.
Chapter 2. Safety information 9
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
10 Hardware Maintenance Manual
Chapter 2. Safety information 11
12 Hardware Maintenance Manual
18 kg (37 lbs) 32 kg (70.5 lbs) 55 kg (121.2 lbs)
1
2
Chapter 2. Safety information 13
PERIGO
A corrente elétrica proveniente de cabos de alimentação, de telefone e de
comunicações é perigosa.
Para evitar risco de choque elétrico:
v Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção
ou reconfiguração deste produto durante uma tempestade com raios.
v Conecte todos os cabos de alimentação a tomadas elétricas corretamente
instaladas e aterradas.
v Todo equipamento que for conectado a este produto deve ser conectado a
tomadas corretamente instaladas.
v Quando possível, utilize apenas uma das mãos para conectar ou desconectar
cabos de sinal.
v Nunca ligue nenhum equipamento quando houver evidência de fogo, água ou
danos estruturais.
v 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.
v 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: 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.
14 Hardware Maintenance Manual
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67
  • Page 68 68
  • Page 69 69
  • Page 70 70
  • Page 71 71
  • Page 72 72
  • Page 73 73
  • Page 74 74
  • Page 75 75
  • Page 76 76
  • Page 77 77
  • Page 78 78
  • Page 79 79
  • Page 80 80
  • Page 81 81
  • Page 82 82
  • Page 83 83
  • Page 84 84
  • Page 85 85
  • Page 86 86
  • Page 87 87
  • Page 88 88
  • Page 89 89
  • Page 90 90
  • Page 91 91
  • Page 92 92
  • Page 93 93
  • Page 94 94
  • Page 95 95
  • Page 96 96
  • Page 97 97
  • Page 98 98
  • Page 99 99
  • Page 100 100
  • Page 101 101
  • Page 102 102
  • Page 103 103
  • Page 104 104
  • Page 105 105
  • Page 106 106
  • Page 107 107
  • Page 108 108
  • Page 109 109
  • Page 110 110
  • Page 111 111
  • Page 112 112
  • Page 113 113
  • Page 114 114
  • Page 115 115
  • Page 116 116
  • Page 117 117
  • Page 118 118
  • Page 119 119
  • Page 120 120
  • Page 121 121
  • Page 122 122
  • Page 123 123
  • Page 124 124
  • Page 125 125
  • Page 126 126
  • Page 127 127
  • Page 128 128
  • Page 129 129
  • Page 130 130
  • Page 131 131
  • Page 132 132
  • Page 133 133
  • Page 134 134
  • Page 135 135
  • Page 136 136
  • Page 137 137
  • Page 138 138
  • Page 139 139
  • Page 140 140
  • Page 141 141
  • Page 142 142
  • Page 143 143
  • Page 144 144
  • Page 145 145
  • Page 146 146
  • Page 147 147
  • Page 148 148
  • Page 149 149
  • Page 150 150
  • Page 151 151
  • Page 152 152
  • Page 153 153
  • Page 154 154
  • Page 155 155
  • Page 156 156
  • Page 157 157
  • Page 158 158
  • Page 159 159
  • Page 160 160
  • Page 161 161
  • Page 162 162
  • Page 163 163
  • Page 164 164
  • Page 165 165
  • Page 166 166
  • Page 167 167
  • Page 168 168
  • Page 169 169
  • Page 170 170
  • Page 171 171
  • Page 172 172
  • Page 173 173
  • Page 174 174
  • Page 175 175
  • Page 176 176
  • Page 177 177
  • Page 178 178
  • Page 179 179
  • Page 180 180
  • Page 181 181
  • Page 182 182
  • Page 183 183
  • Page 184 184
  • Page 185 185
  • Page 186 186
  • Page 187 187
  • Page 188 188
  • Page 189 189
  • Page 190 190
  • Page 191 191
  • Page 192 192
  • Page 193 193
  • Page 194 194
  • Page 195 195
  • Page 196 196
  • Page 197 197
  • Page 198 198
  • Page 199 199
  • Page 200 200
  • Page 201 201
  • Page 202 202
  • Page 203 203
  • Page 204 204
  • Page 205 205
  • Page 206 206
  • Page 207 207
  • Page 208 208
  • Page 209 209
  • Page 210 210
  • Page 211 211
  • Page 212 212
  • Page 213 213
  • Page 214 214
  • Page 215 215
  • Page 216 216
  • Page 217 217
  • Page 218 218
  • Page 219 219
  • Page 220 220
  • Page 221 221
  • Page 222 222
  • Page 223 223
  • Page 224 224
  • Page 225 225
  • Page 226 226
  • Page 227 227
  • Page 228 228
  • Page 229 229
  • Page 230 230
  • Page 231 231
  • Page 232 232
  • Page 233 233
  • Page 234 234
  • Page 235 235
  • Page 236 236
  • Page 237 237
  • Page 238 238
  • Page 239 239
  • Page 240 240
  • Page 241 241
  • Page 242 242
  • Page 243 243
  • Page 244 244
  • Page 245 245
  • Page 246 246
  • Page 247 247
  • Page 248 248
  • Page 249 249
  • Page 250 250
  • Page 251 251
  • Page 252 252
  • Page 253 253
  • Page 254 254
  • Page 255 255
  • Page 256 256
  • Page 257 257
  • Page 258 258
  • Page 259 259
  • Page 260 260
  • Page 261 261
  • Page 262 262
  • Page 263 263
  • Page 264 264
  • Page 265 265
  • Page 266 266
  • Page 267 267
  • Page 268 268
  • Page 269 269
  • Page 270 270
  • Page 271 271
  • Page 272 272
  • Page 273 273
  • Page 274 274
  • Page 275 275
  • Page 276 276
  • Page 277 277
  • Page 278 278
  • Page 279 279
  • Page 280 280
  • Page 281 281
  • Page 282 282
  • Page 283 283
  • Page 284 284
  • Page 285 285
  • Page 286 286
  • Page 287 287
  • Page 288 288
  • Page 289 289
  • Page 290 290
  • Page 291 291
  • Page 292 292
  • Page 293 293
  • Page 294 294
  • Page 295 295
  • Page 296 296
  • Page 297 297
  • Page 298 298
  • Page 299 299
  • Page 300 300
  • Page 301 301
  • Page 302 302
  • Page 303 303
  • Page 304 304
  • Page 305 305
  • Page 306 306
  • Page 307 307
  • Page 308 308
  • Page 309 309
  • Page 310 310
  • Page 311 311
  • Page 312 312
  • Page 313 313
  • Page 314 314
  • Page 315 315
  • Page 316 316
  • Page 317 317
  • Page 318 318
  • Page 319 319
  • Page 320 320
  • Page 321 321
  • Page 322 322
  • Page 323 323
  • Page 324 324
  • Page 325 325
  • Page 326 326
  • Page 327 327
  • Page 328 328
  • Page 329 329
  • Page 330 330
  • Page 331 331
  • Page 332 332
  • Page 333 333
  • Page 334 334
  • Page 335 335
  • Page 336 336
  • Page 337 337
  • Page 338 338
  • Page 339 339
  • Page 340 340
  • Page 341 341
  • Page 342 342
  • Page 343 343
  • Page 344 344
  • Page 345 345
  • Page 346 346
  • Page 347 347
  • Page 348 348
  • Page 349 349
  • Page 350 350
  • Page 351 351
  • Page 352 352
  • Page 353 353
  • Page 354 354
  • Page 355 355
  • Page 356 356
  • Page 357 357
  • Page 358 358
  • Page 359 359
  • Page 360 360
  • Page 361 361
  • Page 362 362
  • Page 363 363
  • Page 364 364
  • Page 365 365
  • Page 366 366
  • Page 367 367
  • Page 368 368
  • Page 369 369
  • Page 370 370
  • Page 371 371
  • Page 372 372
  • Page 373 373
  • Page 374 374
  • Page 375 375
  • Page 376 376
  • Page 377 377
  • Page 378 378
  • Page 379 379
  • Page 380 380
  • Page 381 381
  • Page 382 382
  • Page 383 383
  • Page 384 384
  • Page 385 385
  • Page 386 386
  • Page 387 387
  • Page 388 388
  • Page 389 389
  • Page 390 390
  • Page 391 391
  • Page 392 392
  • Page 393 393
  • Page 394 394
  • Page 395 395
  • Page 396 396
  • Page 397 397
  • Page 398 398
  • Page 399 399
  • Page 400 400
  • Page 401 401
  • Page 402 402
  • Page 403 403
  • Page 404 404
  • Page 405 405
  • Page 406 406
  • Page 407 407
  • Page 408 408

Lenovo ThinkCentre A61 Hardware Maintenance Manual

Type
Hardware Maintenance Manual

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI