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                           ThinkCentre  Hardware Maintenance Manual                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
                    
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                          Note: Before using this information and the product it supports, be sure to read and  understand the information under “Notices,” on page 313.    Fourth Edition (April, 2009)  © Copyright Lenovo 2008, 2009. 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.  
                    
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                          Contents  POST error codes  . . . . . . . . . . . .74  Chapter 1. About this manual  . . . . .1  Miscellaneous error messages  . . . . . . . .76  Important safety information  . . . . . . . . .1  Undetermined problems  . . . . . . . . . .77  Important information about replacing RoHS  compliant FRUs  . . . . . . . . . . . . .2  Chapter 8. Replacing FRUs  . . . . . .79  Locations  . . . . . . . . . . . . . . .80  Chapter 2. Safety information  . . . . .3  Locating connectors on the front of the
                    
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                          Trademarks  . . . . . . . . . . . . . . 314 Appendix. Notices  . . . . . . . . . 313  Television output notice  . . . . . . . . . . 314  iv Hardware Maintenance Manual                                                                                                                                                                                                                                                                                                                                           
                    
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                          Chapter 1. About this manual  ®  This manual contains service and reference information for ThinkCentre computer  machine types listed on the front cover. This manual is intended only for trained  ®  Service Providers who are familiar with Lenovo computer products.  Note: Be sure to read and understand the Chapter 2, “Safety information,” on page  3 before using the information in this manual.  The “Symptom-to-FRU Index” chapter and the “Additional service information”  chapter apply to all Th
                    
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                          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
                    
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                          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 sudden
                    
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                          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
                    
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                          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
                    
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                          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 guid
                    
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                          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 protec
                    
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                          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
                    
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                          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 r
                    
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                          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.        10 Hardware Maintenance Manual 2 1                                                                                                                                  
                    
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                        Chapter 2. Safety information 11                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                    
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                          ≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs)                             Chapter 2. Safety information 13 2 1                                                                                                                                                                                                                                                                                                                                                                                             
                    
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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:  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 instala