Lenovo ThinkCentre M83 Hardware Maintenance Manual Download Page 102

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HDMI

Figure 19. Removing the computer cover

gzi

Removing and reinstalling the front bezel

Attention:

Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Safety information” on page 1.

To remove and reinstall the front bezel, do the following:

1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect

all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2. Remove the computer cover. See “Removing the computer cover” on page 93.

ThinkCentre M83 and M93/p Hardware Maintenance Manual

Summary of Contents for ThinkCentre M83

Page 1: ...Centre M83 and M93 p Hardware Maintenance Manual Machine Types 10A0 10A1 10A2 10A3 10A4 10A5 10A6 10A7 10A8 10A9 10AA 10AB 10BE 10AG 10AH 10AJ 10AK 10AL 10AM 10AN 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB ...

Page 2: ... on page 1 and Appendix A Notices on page 293 Fourth Edition October 2014 Copyright Lenovo 2013 2014 LIMITED AND RESTRICTED RIGHTS NOTICE If data or software 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 ...

Page 3: ...erformance and lockup problems 49 Printer problems 51 Serial port problems 51 Software problems 52 USB problems 53 Diagnostics 53 Lenovo Solution Center 54 UEFI diagnostic program 54 Chapter 5 Using the Setup Utility program 55 Starting the Setup Utility program 55 Viewing and changing settings 55 Using passwords 55 Password considerations 56 Power on password 56 Administrator password 56 Setting ...

Page 4: ...5 Replacing the internal speaker 138 Replacing the thermal sensor 140 Replacing the cover presence switch 142 Replacing the Wi Fi units 144 Removing the Wi Fi adapter card 145 Removing the Wi Fi card module 147 Installing the Wi Fi units 149 Installing or removing the rear Wi Fi antenna 152 Installing the rear Wi Fi antenna 152 Removing the rear Wi Fi antenna 153 Installing or removing the front W...

Page 5: ...ive assembly 251 Replacing the secondary hard disk drive 253 Installing or removing the I O box 259 Installing or replacing a memory module 262 Replacing the battery 263 Replacing the power switch board 265 Replacing the Wi Fi card module 266 Installing or removing the front Wi Fi antenna 268 Installing or removing the rear Wi Fi antenna 270 Replacing the internal speaker 271 Replacing the cover p...

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Page 7: ...tests to troubleshoot problems Important This manual is intended only for trained service technicians who are familiar with ThinkCentre computers Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively Before servicing a ThinkCentre computer be sure to read and understand Chapter 1 Safety information on page 1 Copyright Lenovo 2013 2014 v ...

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Page 9: ...away from all personnel while you are servicing the machine Keep your tool case away from walk areas so that other people will not trip over it Do not wear loose clothing that can be trapped in the moving parts of a machine Ensure that your sleeves are fastened or rolled up above your elbows If your hair is long fasten it Insert the ends of your necktie or scarf inside clothing or fasten it with a...

Page 10: ... 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 S...

Page 11: ... 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 co...

Page 12: ... 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 operato...

Page 13: ...s 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 ...

Page 14: ... 32 kg 70 5 lbs 55 kg 121 2 lbs 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 6 Thin...

Page 15: ...Chapter 1 Safety information 7 ...

Page 16: ... kg 37 lbs 32 kg 70 5 lbs 55 kg 121 2 lbs 1 2 PERIGO A corrente elétrica proveniente de cabos de alimentação de telefone e de comunicações é perigosa 8 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 17: ...s 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 CUIDADO Ao substituir a bateria de lítio utilize apenas uma bateria com Número de Peça 45C1566 ou um tipo de ba...

Page 18: ...e 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 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 corrent...

Page 19: ...Chapter 1 Safety information 11 ...

Page 20: ...1 2 12 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 21: ...1 2 Chapter 1 Safety information 13 ...

Page 22: ...roduit ou des périphériques qui lui sont raccordés reportez vous aux instructions ci dessous pour connecter et déconnecter les différents cordons Connexion Déconnexion 1 Mettez les unités HORS TENSION 2 Commencez par brancher tous les cordons sur les unités 3 Branchez les câbles d interface sur des connecteurs 4 Branchez les cordons d alimentation sur des prises 5 Mettez les unités SOUS TENSION 1 ...

Page 23: ...à laser contiennent une diode à laser intégrée de classe 3A ou 3B Prenez connaissance des informations suivantes Rayonnement laser lorsque le carter est ouvert Evitez toute expositiondirecte au rayon laser Evitez de regarder fixement le faisceau ou del observer à l aide d instruments optiques 18 kg 37 lbs 32 kg 70 5 lbs 55 kg 121 2 lbs ATTENTION Soulevez la machine avec précaution ATTENTION L inte...

Page 24: ...ind Zum Installieren Transportieren und Öffnen der Abdeckungen des Computers oder der angeschlossenen Einheiten die Kabel gemäß der folgenden Tabelle anschließen und abziehen Zum Anschließen der Kabel gehen Sie wie folgt vor Zum Abziehen der Kabel gehen Sie wie folgt vor 1 Schalten Sie alle Einheiten AUS 2 Schließen Sie erst alle Kabel an die Einheiten an 3 Schließen Sie die Signalkabel an die Buc...

Page 25: ...hier angegeben verwendet kann gefährliche Laserstrahlung auftreten VORSICHT Einige Lasergeräte enthalten eine Laserdiode der Klasse 3A oder 3B Beachten Sie Folgendes Laserstrahlung bei geöffneter Verkleidung Nicht in den Strahl blicken Keine Lupen oder Spiegel verwenden Strahlungsbereich meiden 18 kg 32 kg 55 kg ACHTUNG Arbeitsschutzrichtlinien beim Anheben der Maschine beachten ACHTUNG Mit dem Ne...

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Page 27: ...1 2 Chapter 1 Safety information 19 ...

Page 28: ...di installazione spostamento o apertura dei coperchi di questo prodotto o delle unità collegate Per collegarsi Per scollegarsi 1 SPEGNERE le apparecchiature 2 Innanzitutto collegare tutti i cavi alle unità 3 Collegare i cavi di segnale ai connettori 4 Collegare i cavi di alimentazione alla presa 5 Accendere l unità 1 SPEGNERE le apparecchiature 2 Innanzitutto rimuovere i cavi di alimentazione dall...

Page 29: ...laser contengono un diodo laser di Classe 3A o Classe 3B Tener presente quanto segue Aprendo l unità vengono emesse radiazioni laser Non fissare il fascio non guardarlo direttamente con strumenti ottici ed evitare l esposizione al fascio 18 kg 32 kg 55 kg ATTENZIONE Prestare attenzione nel sollevare l apparecchiatura ATTENZIONE Il pulsante di controllo dell alimentazione presente sull unità e l in...

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Page 31: ...nstalación mantenimiento o reconfiguración de este producto durante una tormenta eléctrica Conecte todos los cables de alimentación a tomas de corriente debidamente cableadas y conectadas a tierra Cualquier equipo que se conecte a este producto también debe conectarse a tomas de corriente debidamente cableadas Siempre que sea posible utilice una sola mano para conectar o desconectar los cables de ...

Page 32: ...vos PRECAUCIÓN Cuando sustituya una batería de litio utilice solamente una batería número de pieza 45C1566 u otra de tipo equivalente recomendada por el fabricante Si su sistema dispone de un módulo que contiene una batería de litio reemplácelo sólo con el mismo tipo de módulo del mismo fabricante La batería contiene litio y puede explotar si no se utiliza manipula o desecha correctamente No debe ...

Page 33: ...IÓN Adopte procedimientos seguros al levantar el equipo PRECAUCIÓN El botón de control de alimentación del dispositivo y el interruptor de alimentación de la fuente de alimentación no desconectan la corriente eléctrica suministrada al dispositivo Además el dispositivo podría tener más de un cable de alimentación Para suprimir toda la corriente eléctrica del dispositivo asegúrese de que todos los c...

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Page 35: ...ration as shipped 11 2 kg 24 69 lb Environment Air temperature Operating 10 C to 35 C 50 F to 95 F Storage in original shipping package 40 C to 60 C 40 F to 140 F Storage without package 10 C to 60 C 14 F to 140 F Humidity Operating 20 to 80 non condensing Storage 20 to 90 non condensing Altitude Operating 15 2 to 3048 m 50 to 10 000 ft Storage 15 2 to 10 668 m 50 to 35 000 ft Electrical input Inp...

Page 36: ...pping package 40 C to 60 C 40 F to 140 F Storage without package 10 C to 60 C 14 F to 140 F Humidity Operating 20 to 80 non condensing Storage 20 to 90 non condensing Altitude Operating 15 2 to 3048 m 50 to 10 000 ft Storage 15 2 to 10 668 m 50 to 35 000 ft Electrical input Input voltage Low range Minimum 100 V ac Maximum 127 V ac Input frequency range 50 60 Hz High range Minimum 200 V ac Maximum ...

Page 37: ...tem preinstalled the programs might vary Accessing Lenovo programs on the Windows 7 operating system You can access Lenovo programs on the Microsoft Windows 7 operating system through Windows Search or from Control Panel The icon name displayed in the search result or Control Panel might be different from the program name You can find the program by its program name or icon name as shown in the Le...

Page 38: ...enovo Update and Drivers View Management Utility Lenovo View Management Utility Accessing Lenovo programs on the Windows 8 or Windows 8 1 operating system If your computer is preinstalled with the Microsoft Windows 8 or Microsoft Windows 8 1 operating system you can access Lenovo programs by doing one of the following On the Windows 8 operating system press the Windows key to go to the Start scree...

Page 39: ...rmation is available on the Lenovo Support Web site at http www lenovo com support This Web site is updated with the latest support information such as the following Drivers and software Diagnostic solutions Product and service warranty Product and parts details User guides and manuals Knowledge base and frequently asked questions Chapter 2 General information 31 ...

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Page 41: ...mputer Look for displayed error codes Listen for beep codes Look for readable instructions or a main menu on the display If you did not receive the correct response proceed to step 6 on page 33 If you do receive the correct response proceed to step 7 on page 33 6 Look at the following conditions and follow the instructions If you hear beep codes during POST go to Beep symptoms on page 61 If the co...

Page 42: ...ical only if they 1 Are the exact machine type and models 2 Have the same BIOS level 3 Have the same adapters attachments in the same locations 4 Have the same address jumpers terminators cabling 5 Have the same software versions and levels 6 Have the same Diagnostic Diskettes version 7 Have the same configuration options set in the system 8 Have the same setup for the operating system control fil...

Page 43: ...that it is switched on The power indicator on the front of the computer is on The computer voltage matches the voltage available at the electrical outlet for your country or region The monitor screen is blank Verify that The monitor signal cable is correctly connected to the monitor and to the appropriate monitor connector on the computer The monitor power cord is correctly connected to the monito...

Page 44: ...t side and click Control Panel in the Windows System section Troubleshooting procedure Use the following procedure as a starting point for diagnosing problems you are experiencing with your computer 1 Verify that the cables for all attached devices are connected correctly and securely 2 Verify that all attached devices that require ac power are connected to properly grounded functioning electrical...

Page 45: ... the symptom your computer is experiencing occurred immediately after you installed a new hardware option or new software do the following before referring to the troubleshooting information 1 Remove the new hardware option or software If you must remove the computer cover to remove a hardware option ensure that you review and follow the electrical safety information provided with your computer Fo...

Page 46: ...stem board is disabled use the audio jacks on the adapter Ensure that the program you are running is designed for use in the Windows operating system If the program is designed to run in DOS the program does not use the Windows sound feature and must be configured to use SoundBlaster Pro or SoundBlaster emulation Verify that the audio device drivers are correctly installed See Windows help system ...

Page 47: ...ination of CD and DVD drives try inserting the disc into the other drive In some cases only one of the drives is connected to the audio subsystem If you are using the Windows 7 operating system follow the action for A CD or DVD does not work on page 39 If this does not correct the problem follow the action for A CD or DVD does not work on page 39 A CD or DVD does not work Symptom A CD or DVD does ...

Page 48: ...les turn off the computer and then restart the computer Try a lower screen resolution or color depth If these actions do not correct the problem run the Lenovo Solution Center program If you need technical assistance see Lenovo Support Web site on page 31 DVD movie will not play Symptom DVD movie will not play Actions Ensure that the disc surface is clean and not scratched Check the disc or packag...

Page 49: ... assistance see Lenovo Support Web site on page 31 Intermittent problems Symptom A problem occurs only occasionally and is difficult to repeat Actions Verify that all cables and cords are securely connected to the computer and attached devices Verify that when the computer is on the fan grill is not blocked there is air flow around the grill and the fans are working If airflow is blocked or the fa...

Page 50: ...ght get corrupted or damaged In such cases you might need to replace the hard disk drive Refer to Replacing the primary hard disk drive on page 126 If these actions do not correct the problem run the diagnostic program Lenovo Solution Center See Lenovo Solution Center on page 54 If you need technical assistance see Replacing the primary hard disk drive on page 126 Keyboard mouse or pointing device...

Page 51: ...d correctly If you are using a USB keyboard or mouse verify that the USB connectors are enabled in the BIOS settings See Enabling or disabling a device on page 57 If these actions do not correct the problem run the Lenovo Solution Center program If you need technical assistance see Lenovo Support Web site on page 31 Optical mouse This section provides instructions on how to clean an optical mouse ...

Page 52: ... conditions are met The batteries are properly installed The batteries still retain their current The wireless Keyboard is located less than ten meters away from the transceiver The transceiver is fully installed Action If the Transceiver Communications LED is not on reconnect the transceiver and the keyboard Monitor problems Note Many monitors have status indicator lights and built in controls fo...

Page 53: ...Actions The monitor might be operating in a low refresh rate display mode Set the monitor to the highest noninterlaced refresh rate supported by your monitor and the video controller in your computer Attention Using a resolution or refresh rate that is not supported by your monitor might damage it Check the documentation that comes with your monitor to verify the supported refresh rates The monito...

Page 54: ...t problems on page 46 A wireless LAN problem on page 48 A wireless WAN problem on page 48 Bluetooth problem on page 48 Ethernet problems For Ethernet problems select your symptom from the following list Your computer cannot connect to the network on page 46 The adapter stops working for no apparent reason on page 47 If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps the ...

Page 55: ...e cause data loss or result in lost connections You have installed all networking software that is necessary for your network environment Check with your LAN administrator for the necessary networking software The adapter stops working for no apparent reason Symptom The adapter stops working for no apparent reason Action The network driver files may be corrupt or missing Update the driver by refer...

Page 56: ...is computer Remove it Note Some computer models do not have a wireless WAN Bluetooth problem Symptom Sound does not come from the Bluetooth headset headphone but comes from the local speaker even though the headset headphone is connected using Headset profile or AV profile Action Do the following 1 Exit the application that uses the sound device for example Windows Media Player 2 Open Control Pane...

Page 57: ...ailing option is a SCSI option verify that The cables for all external SCSI options are connected correctly The last option in each SCSI chain or the end of the SCSI cable is terminated correctly All external SCSI options are turned on External SCSI options must be turned on before the computer is turned on For more information see your SCSI documentation Verify that the option and any required de...

Page 58: ...1 On the Windows 7 operating system click Start Computer On the Windows 8 operating system open File Explorer and click Computer On the Windows 8 1 operating system open File Explorer 2 Right click your C drive entry and then click Properties 3 Click Disk Cleanup 4 Click Clean up system files 5 Click the More Options tab 6 In the Programs and Features area click the Clean up button 7 A list of ins...

Page 59: ...t correct the problem run the diagnostic programs see Lenovo Solution Center on page 54 for instructions If you need technical assistance see Lenovo Support Web site on page 31 Printer problems Symptom The printer does not work Actions Verify that 1 The printer is turned on and is online 2 Paper is loaded correctly 3 The printer signal cable is securely connected to the correct parallel serial or ...

Page 60: ...9 Consequently these programs sort dates out of order Check with your software manufacturer to see if any updates are available Many software manufacturers make updates available from the World Wide Web Software does not work as expected Symptom Software does not work as expected Actions Most software programs have built in help systems that provide instructions for most tasks If you are having di...

Page 61: ...tch ensure that it is in the Online position If the USB device is a printer ensure that paper is loaded correctly Ensure that any device drivers or other software supplied with the USB device is correctly installed Refer to the documentation for the USB device Reset the device by detaching and reattaching the USB connector If these actions do not correct the problem run the Lenovo Solution Center ...

Page 62: ...gnostic program A UEFI diagnostic program is preinstalled on the computer It enables you to test memory modules and internal storage devices view system information and check and recover bad sectors on internal storage devices To run the UEFI diagnostic program do the following 1 Turn on the computer If the computer cannot be turned on go to Basic troubleshooting on page 35 If an error code is dis...

Page 63: ...and exit the Setup Utility program Press Enter when prompted to confirm the exit The error message will not be displayed again Press F2 to bypass the error message and log in to the operating system Note You have to enable the configuration change detection feature for the POST to detect the removal of the hard disk drive To enable the configuration change detection feature do the following 1 Star...

Page 64: ...onsible for maintaining the configuration settings of several computers you might want to set an Administrator Password When an administrator password is set you are prompted to type a valid password each time you try to access the Setup Utility program The Setup Utility program cannot be accessed until a valid password is typed in If both the power on password and administrator password are set y...

Page 65: ...is feature is set to Disable all devices connected to the SATA connectors such as hard disk drives or the optical drive are disabled and cannot be accessed To enable or disable a device do the following 1 Start the Setup Utility program See Starting the Setup Utility program on page 55 2 From the Setup Utility program main menu select Devices 3 Depending on the device you want to enable or disable...

Page 66: ...Utility program See Starting the Setup Utility program on page 55 2 From the Setup Utility program main menu select Power Enhanced Power Saving Mode and press Enter 3 Select Enabled and press Enter 4 From the Power menu select Automatic Power On and press Enter 5 Select Wake on Lan and press Enter 6 Select Disabled and press Enter 7 Press F10 to save changes and exit the Setup Utility program Pres...

Page 67: ...played 5 Select Better Acoustic Performance or Better Thermal Performance as desired 6 Press F10 to save changes and exit the Setup Utility program See Exiting the Setup Utility program on page 60 ICE thermal alert You can monitor the thermal function of your computer under critical thermal situations through the ICE Thermal Alert menu Two choices are available Enabled default setting Disabled Aft...

Page 68: ...ayed and press Enter to confirm your selection 5 Press F10 to save changes and exit the Setup Utility program See Exiting the Setup Utility program on page 60 Exiting the Setup Utility program After you finish viewing or changing settings press Esc to return to the Setup Utility program main menu You might have to press Esc several times Do one of the following If you want to save the new settings...

Page 69: ...r FRU Action The start up drive is not in the boot sequence in configuration Check the configuration and ensure the start up drive is in the boot sequence No operating system installed on the boot drive Install an operating system on the boot drive The boot sector on the startup drive is corrupted The drive must be formatted Do the following 1 Attempt to back up the data on the failing hard disk d...

Page 70: ...ably will not appear on the screen the next time you turn on the system Error code POST error message Description Action 0135 Fan failure The system might be overheating Press F10 to exit Note If the problem is caused by the microprocessor fan press F10 will not solve the problem 0211 Keyboard not found When there is no keyboard detected the error message will be displayed 0164 Memory size decreas...

Page 71: ... Ensure network administrator is using correct MAC address 5 Ensure no interrupt or I O address conflicts 6 Network adapter advise network administrator of new MAC address Dead computer See Hard disk drive boot error on page 61 1 Power Supply 2 System Board Diskette drive in use light remains on or does not light when drive is active 1 Diskette Drive 2 System Board 3 Diskette Drive Cable Blank scr...

Page 72: ... network administrator is using LCCM Hybrid RPL check startup sequence a First device network b Second device hard disk 2 Hard disk drive RPL computer does not RPL from server 1 Check startup sequence 2 Check the network adapter LED status Serial or parallel port device failure system board port 1 External Device Self Test OK 2 External Device 3 Cable 4 System Board Serial or parallel port device ...

Page 73: ...k drive h Diskette drive 3 Power on the computer to re test the system 4 Repeat steps 1 through 3 until you find the failing device or adapter If all devices and adapters have been removed and the problem continues replace the system board Chapter 6 Symptom to FRU Index 65 ...

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Page 75: ...ont connector control and indicator locations 1 Hard disk drive activity indicator 5 USB 3 0 connector USB port 1 2 Power indicator 6 Headphone connector 3 Power button 7 Microphone connector 4 Optical drive eject close button 8 USB 3 0 connector USB port 2 Locating connectors on the rear of your computer Figure 2 ThinkCentre M93 p rear connector locations on page 68 shows the locations of the con...

Page 76: ... 2 Serial port 1 12 Audio line in connector 3 VGA monitor connector 13 PCI Express x16 graphics card slot 4 DisplayPort connectors 2 14 PCI Express x1 card slot 5 PS 2 keyboard and mouse connectors optional 15 PCI Express card slot physical link width x16 negotiable link width x4 x1 6 USB 3 0 connectors USB ports 5 and 6 16 PCI card slot 7 USB 3 0 connectors USB ports 7 and 8 17 Cable lock slots 2...

Page 77: ...erial port serial port 2 9 Ethernet connector 18 Security lock slot Connector Description Audio line in connector Used to receive audio signals from an external audio device such as a stereo system When you attach an external audio device a cable is connected between the audio line out connector of the device and the audio line in connector of the computer Audio line out connector Used to send aud...

Page 78: ...se connector Serial port Used to attach an external modem a serial printer or other devices that use a 9 pin serial port USB connector Used to attach a device that requires a USB connector such as a USB keyboard a USB mouse a USB scanner or a USB printer If you have more than eight USB devices you can purchase a USB hub which you can use to connect additional USB devices VGA monitor connector Used...

Page 79: ...ponent locations The following table lists the major FRUs shown in Figure 4 Component locations on page 71 and identifies which FRUs also are self service CRUs or optional service CRUs Notes Chapter 7 Locations 71 ...

Page 80: ...es No 6 Optical drive Yes No 7 Front USB assembly available in some models No Yes 8 Thermal sensor No Yes 9 Front Wi Fi antenna Yes No 10 Front fan assembly No Yes 11 Front audio and USB assembly No Yes 12 Secondary hard disk drive available in some models Yes No 13 System board No No 14 Battery No No 15 Microprocessor No Yes 16 Peripheral Component Interconnect PCI card available in ThinkCentre M...

Page 81: ...SB connector 1 for connecting additional USB devices 5 Memory slot 1 DIMM1 20 Clear CMOS Complementary Metal Oxide Semiconductor Recovery jumper 6 Memory slot 2 DIMM2 21 Serial COM2 connector 7 Memory slot 3 DIMM3 22 Internal speaker connector 8 Memory slot 4 DIMM4 23 Front audio connector 9 Thermal sensor connector 24 PCI card slot 10 Hard disk drive fan connector 25 PCI Express card slot physica...

Page 82: ...cting USB ports 1 and 2 on the front bezel 4 Microprocessor fan connector 19 Front USB connector 1 for connecting additional USB devices 5 Memory slot 1 DIMM1 20 Clear CMOS Complementary Metal Oxide Semiconductor Recovery jumper 6 Memory slot 2 DIMM2 21 Serial COM2 connector 7 Memory slot 3 DIMM3 22 Internal speaker connector 8 Memory slot 4 DIMM4 23 Front audio connector 9 Thermal sensor connecto...

Page 83: ...13 eSATA connector 28 Cover presence switch connector intrusion switch connector 14 Parallel connector 29 Battery 15 SATA 3 0 connectors 3 Chapter 7 Locations 75 ...

Page 84: ...nnect the cables to the drive installed Refer to the appropriate section in Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE on page 93 for instructions on how to install or replace internal drives for your computer Figure 7 Drive bay locations on page 76 shows the locations of the drive bays Figure 7 Drive bay locations 1 Bay 1 Primary optical drive bay with an o...

Page 85: ...r 4 Power indicator 9 Headphone connector 5 Card reader indicator available in some models 10 USB 3 0 connector USB port 1 Locating connectors on the rear of your computer Figure 9 ThinkCentre M93 p rear connector locations on page 78 shows the locations of the connectors on the rear of the ThinkCentre M93 p computer Some connectors on the rear of your computer are color coded to help you determin...

Page 86: ...rd slot 4 DisplayPort connectors 2 14 PCI Express x1 card slot 5 USB 3 0 connectors USB ports 5 and 6 15 Optional serial port serial port 2 6 USB 3 0 connectors USB ports 7 and 8 16 Ethernet connector 7 USB 2 0 connectors USB ports 3 and 4 17 Cable lock slots 2 8 Microphone connector 18 PS 2 keyboard and mouse connectors optional 9 Audio line out connector 19 Security lock slot 10 Audio line in co...

Page 87: ...ion Audio line in connector Used to receive audio signals from an external audio device such as a stereo system When you attach an external audio device a cable is connected between the audio line out connector of the device and the audio line in connector of the computer Audio line out connector Used to send audio signals from the computer to external devices such as powered stereo speakers speak...

Page 88: ...evices that use a 9 pin serial port USB connector Used to attach a device that requires a USB connector such as a USB keyboard a USB mouse a USB scanner or a USB printer If you have more than eight USB devices you can purchase a USB hub which you can use to connect additional USB devices VGA monitor connector Used to attach a VGA monitor or other devices that use a VGA monitor connector Locating m...

Page 89: ...ponent locations The following table lists the major FRUs shown in Figure 11 Component locations on page 81 and identifies which FRUs also are self service CRUs or optional service CRUs Notes Chapter 7 Locations 81 ...

Page 90: ...ical drive Yes No 6 Front Wi Fi antenna Yes No 7 Front bezel Yes No 8 Card reader assembly available in some models No Yes 9 Front audio and USB assembly No Yes 10 Thermal sensor No Yes 11 System fan assembly No Yes 12 Internal speaker available in some models No Yes 13 Cover presence switch available in some models Yes No 14 Hard disk drive or solid state drive Yes No 15 Battery No Yes 16 System ...

Page 91: ... connector 1 for connecting additional USB devices 5 Memory slot 1 DIMM1 20 Clear CMOS Complementary Metal Oxide Semiconductor Recovery jumper 6 Memory slot 2 DIMM2 21 Serial COM2 connector 7 Memory slot 3 DIMM3 22 Internal speaker connector 8 Memory slot 4 DIMM4 23 Front audio connector 9 Thermal sensor connector 24 PCI card slot 10 Hard disk drive fan connector 25 PCI Express card slot physical ...

Page 92: ...ting USB ports 1 and 2 on the front bezel 4 Microprocessor fan connector 19 Front USB connector 1 for connecting additional USB devices 5 Memory slot 1 DIMM1 20 Clear CMOS Complementary Metal Oxide Semiconductor Recovery jumper 6 Memory slot 2 DIMM2 21 Serial COM2 connector 7 Memory slot 3 DIMM3 22 Internal speaker connector 8 Memory slot 4 DIMM4 23 Front audio connector 9 Thermal sensor connector...

Page 93: ...rtant to note the type and size of the drive that you can install or replace in each bay and correctly connect the cables to the drive installed Refer to the appropriate section in Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN on page 159 for instructions on how to install or replace internal drives for your computer Figure 14 Drive bay locations on page 85 sho...

Page 94: ...indicators on the front of your computer Figure 15 Front connector control and indicator locations on page 86 shows the locations of the connectors controls and indicators on the front of your computer Figure 15 Front connector control and indicator locations 86 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 95: ...tor 9 enables you to charge some mobile digital devices and smartphones when your computer is in sleep or hibernation mode or is powered off Locating connectors on the rear of your computer Figure 16 Rear connector locations on page 87 shows the locations of the connectors on the rear of your computer Some connectors on the rear of your computer are color coded to help you determine where to conne...

Page 96: ...y 5 Ethernet cable Optional port Used to install a serial port a DisplayPort connector or a USB 2 0 connector Note If you use the optional port for installing a serial port the serial port and the adjacent VGA monitor connector might interfere with each other when connecting cables To avoid the interference ensure that you use the serial port convert cable that comes with the computer when you con...

Page 97: ...ponent locations The following table lists the major FRUs shown in Figure 17 Component locations on page 89 and identifies which FRUs also are self service CRUs or optional service CRUs Notes Chapter 7 Locations 89 ...

Page 98: ...r cover No Yes 2 System fan No Yes 3 Thermal module No Yes 4 Cover presence switch intrusion switch No Yes 5 Internal speaker No Yes 6 Microprocessor No Yes 7 Front Wi Fi antenna Yes No 8 Power switch board No Yes 9 Power cord No No 10 ac power adapter No No 11 Memory modules Yes No 12 Battery No No 13 Wi Fi card module No Yes 14 Rear Wi Fi antenna cable Yes No 15 Rear Wi Fi antenna Yes No 16 Hard...

Page 99: ...r 2 Optional DisplayPort connector 9 Memory slots 2 3 System fan connector 10 Battery 4 Microprocessor 11 Mini PCI Express card slot 5 Cover presence switch connector intrusion switch connector 12 SATA 3 0 connector 6 Clear CMOS Complementary Metal Oxide Semiconductor Recovery jumper 13 Hard disk drive power connector 7 Internal speaker connector 14 Optional USB 2 0 connector Chapter 7 Locations 9...

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Page 101: ... several minutes until the computer is cool Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To remove the computer cover do the following 1 Remove any media from the drives and turn off all attached devices and the computer 2 Disconnect all power cord from electrical outlets 3 Disconnect the power cords Input Out...

Page 102: ...1 Safety information on page 1 To remove and reinstall the front bezel do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 94 ThinkCentre M83 and M93 p Hardware ...

Page 103: ...parts replacement on page 156 Installing or replacing a PCI card Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or replace a PCI card Your computer has various PCI card slots To install or replace a PCI card do the following 1 Remove all media from the drives ...

Page 104: ...3 At the rear of the computer press the release button 1 to open the card latch 2 Figure 21 Opening the PCI card latch 96 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 105: ...2 Removing a PCI card Notes The card fits tightly into the card slot If necessary alternate moving each side of the card a small and equal amount until the card is removed from the slot If the card is held in place by a retaining latch press the retaining latch 1 as shown to disengage the latch Grasp the card and gently pull it out of the slot 5 Remove the new PCI card from its static protective p...

Page 106: ...empt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or replace a memory module Your computer has four memory slots for installing or replacing double data rate 3 unbuffered dual inline memory modules DDR3 UDIMMs that provide up to a maximum of 32 GB system memory When installing or replacing a memory modul...

Page 107: ...n page 93 3 Lay the computer on its side for easier access to the system board 4 Locate the memory slots See Locating parts on the system board on page 72 5 Remove any parts that might prevent your access to the memory slots Depending on your computer model you might need to remove the PCI Express x16 graphics card for easier access to the memory slots See Installing or replacing a PCI card on pag...

Page 108: ... Installing a memory module 8 Reinstall the PCI Express x16 graphics card if you have removed it What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Replacing the optical drive Attention Do not open your computer or attempt any repair before reading and understanding the ...

Page 109: ...following If you are installing a secondary optical drive remove the plastic panel in the front bezel for the drive bay you want to use If there is a metal static shield installed in the drive bay remove the metal static shield If you are replacing an optical drive disconnect the signal cable and the power cable from the rear of the optical drive press the blue release button and then slide the op...

Page 110: ...ing the optical drive 8 Reinstall the front bezel See Removing and reinstalling the front bezel on page 94 What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Installing or replacing the card reader This section provides instructions on how to replace the card reader 102 ...

Page 111: ... connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Remove the front bezel See Removing and reinstalling the front bezel on page 94 4 Locate the card reader drive bay See Locating internal drives on page 76 5 Carefully pivot the card reader retainer as shown to remove it from the chassis Figure 31 Removing the card reader retainer 6 Install the card ...

Page 112: ... the system board on page 72 9 Locate the protective cover for the card reader drive bay on the front bezel Remove the protective cover by pressing the small tabs 1 to the left and then pulling the tabs to completely disengage the cover from the front bezel Figure 34 Removing the card reader cover 10 Reinstall the front bezel See Removing and reinstalling the front bezel on page 94 104 ThinkCentre...

Page 113: ...nd disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Remove the front bezel See Removing and reinstalling the front bezel on page 94 4 Locate the card reader drive bay See Locating internal drives on page 76 5 Disconnect the card reader cable from the front USB connector 2 on the system board 6 Press the blue retaining...

Page 114: ... or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the front USB assembly Note The front USB assembly is available only in some models Installing the front USB assembly To install the front USB assembly do the following 1 Remove all media from the drives and turn off all attached devices and the co...

Page 115: ...om the chassis Figure 38 Removing the card reader retainer 6 Install the card reader retainer on the side of the new front USB assembly Figure 39 Installing the card reader retainer Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 107 ...

Page 116: ...ng parts on the system board on page 72 9 Locate the protective cover for the card reader drive bay on the front bezel Remove the protective cover by pressing the small tabs 1 to the left and then pulling the tabs to completely disengage the cover from the front bezel Figure 41 Removing the card reader cover 10 Reinstall the front bezel See Removing and reinstalling the front bezel on page 94 108 ...

Page 117: ...rn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Remove the front bezel See Removing and reinstalling the front bezel on page 94 4 Locate the card reader drive bay See Locating internal drives on page 76 5 Disconne...

Page 118: ... system board See Locating parts on the system board on page 72 10 Reinstall the front bezel See Removing and reinstalling the front bezel on page 94 What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Replacing the battery Attention Do not open your computer or attempt a...

Page 119: ...isconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Locate the battery See Locating parts on the system board on page 72 4 Remove the old battery Figure 45 Removing the old battery 5 Install a new battery Figure 46 Installing a new battery 6 Reinstall the computer cover and connect the cables See Completing the parts repl...

Page 120: ...ltage current and energy levels are present inside any component that has this label attached There are no serviceable parts inside these components If you suspect a problem with one of these parts contact a service technician To replace the power supply assembly do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords f...

Page 121: ...nect the power supply assembly cables to the system board and each of the drives 11 Secure the power supply assembly cables with the cable clips and ties in the chassis What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Replacing the heat sink and fan assembly Attention ...

Page 122: ...m the microprocessor fan connector on the system board See Locating parts on the system board on page 72 6 Follow this sequence to remove the four screws that secure the heat sink and fan assembly to the system board a Partially remove screw 1 then fully remove screw 2 and then fully remove screw 1 b Partially remove screw 3 then fully remove screw 4 and then fully remove screw 3 Note Carefully re...

Page 123: ...AUTION The heat sink and microprocessor might be very hot Before you open the computer cover turn off the computer and wait several minutes until the computer is cool Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the microprocessor To replace the microprocess...

Page 124: ...p anything onto the microprocessor socket while it is exposed The socket pins must be kept as clean as possible 8 Ensure that the small handle is in the raised position and the microprocessor retainer is fully open 9 Remove the protective cover that protects the gold contacts of the new microprocessor 10 Note the orientation of the new microprocessor Hold the new microprocessor by its edges and al...

Page 125: ... installation or replacement go to Completing the parts replacement on page 156 Replacing the system board Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the system board CAUTION The heat sink and microprocessor might be very hot Before you open the computer c...

Page 126: ... assembly on page 113 8 Remove the eight screws that secure the system board by following the sequence shown in the following illustration Figure 52 Removing the eight screws that secure the system board 9 Slide the system board to the front of the computer and then carefully lift the system board up out of the chassis 10 Remove the microprocessor from the failing system board and install it on th...

Page 127: ...he front fan assembly on page 213 15 Refer to your record to connect cables to the new system board You also can refer to Locating parts on the system board on page 82 to help you locate the connectors on the system board and connect cables The failing system board must be returned with a microprocessor socket cover to protect the pins during shipping and handling To install the microprocessor soc...

Page 128: ...r piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Installing or replacing the mSATA solid state drive Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or replace the m...

Page 129: ...ve downward Figure 55 Installing the mSATA solid state drive into the storage converter 2 Install the two screws to secure the mSATA solid state drive to the storage converter Figure 56 Installing the screws that secure the mSATA solid state drive Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 121 ...

Page 130: ...ATA solid state drive To replace the mSATA solid state drive do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Remove the front bezel See Removing and reinst...

Page 131: ...gure 58 Removing the mSATA solid state drive storage converter 7 Remove the two screws that secure the mSATA solid state drive from the storage converter Figure 59 Removing the screws that secure the mSATA solid state drive Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 123 ...

Page 132: ...ate drive 9 To install a new mSATA solid state drive insert the mSATA solid state drive into the mini PCI Express slot on the storage converter and then press the mSATA solid state drive downward Figure 61 Installing the mSATA solid state drive into the storage converter 124 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 133: ...er drive bay until it snaps into position Figure 63 Installing the mSATA solid state drive 12 Connect the signal cable and the power cable to the mSATA solid state drive What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Chapter 8 Replacing FRUs machine types 10A0 10A1 1...

Page 134: ...e all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Locate the primary hard disk drive See Locating major FRUs and CRUs on page 70 4 Disconnect the signal cable and the power cable fr...

Page 135: ...ive into the bracket 8 Slide the new hard disk drive into the bracket until it snaps into position Figure 66 Installing the primary hard disk drive 9 Connect the signal cable and the power cable to the new hard disk drive What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 15...

Page 136: ...k drive do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Remove the front bezel See Removing and reinstalling the front bezel on page 94 4 Disconnect the si...

Page 137: ...to the bracket 8 Slide the new hard disk drive into the hard disk bracket until it snaps into position Figure 69 Installing the secondary hard disk drive 9 Connect the signal cable and the power cable to the new hard disk drive What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on p...

Page 138: ...es instructions on how to install the 2 5 inch solid state drive To install the solid state drive do the following 1 Install the solid state drive into the storage converter Then install the four screws to secure the solid state drive to the storage converter Figure 70 Installing the solid state drive into the storage converter 130 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 139: ...ment on page 156 Replacing the front fan assembly Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the front fan assembly Note The front fan assembly is only available in some models To replace the front fan assembly do the following 1 Remove all media from the ...

Page 140: ... The new front fan assembly will have four new rubber mounts attached Figure 72 Removing the front fan assembly 5 Remove the front bezel See Removing and reinstalling the front bezel on page 94 6 Install the new front fan assembly by aligning the new rubber mounts with the corresponding holes in the chassis and push the rubber mounts through the holes 132 ThinkCentre M83 and M93 p Hardware Mainten...

Page 141: ...fore reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the rear fan assembly To replace the rear fan assembly do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the compute...

Page 142: ...rear fan assembly out of the chassis Note The new rear fan assembly will have four new rubber mounts attached Figure 74 Removing the rear fan assembly 6 Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the chassis and push the rubber mounts through the holes 134 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 143: ...anding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the front audio and USB assembly To replace the front audio and USB assembly do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer ...

Page 144: ...USB assembly cables from the system board 6 Remove the screw that secures the front audio and USB assembly Then remove the front audio and USB assembly from the chassis Figure 76 Removing the front audio and USB assembly 136 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 145: ...e corresponding square hole in the front of the chassis Then position the new front audio and USB assembly on the chassis as shown Figure 77 Installing the front audio and USB assembly Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 137 ...

Page 146: ...er or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the internal speaker Note The internal speaker is only available in some models To replace the internal speaker do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords...

Page 147: ...of the internal speaker and slide the internal speaker toward the right to completely remove it from the chassis Figure 79 Removing the old internal speaker Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 139 ...

Page 148: ... the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the thermal sensor To replace the thermal sensor do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Re...

Page 149: ...downward and then push the clip outward to release the clip Then disengage the plastic holder holding the thermal sensor from the chassis Figure 81 Removing the thermal sensor 7 Pull the entire thermal sensor out of the chassis Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 141 ...

Page 150: ...Replacing the cover presence switch Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the cover presence switch intrusion switch To replace the cover presence switch do the following 1 Remove all media from the drives and turn off all attached devices and the com...

Page 151: ...at secures the cover presence switch and remove the cover presence switch from the chassis Figure 83 Removing the cover presence switch Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 143 ...

Page 152: ...iece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Replacing the Wi Fi units Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the Wi Fi units The Wi Fi units include a Wi ...

Page 153: ...omputer cover See Removing the computer cover on page 93 3 If your computer comes with a Wi Fi card module that supports the Bluetooth function disconnect the Bluetooth cable from the Wi Fi adapter card Figure 85 Disconnecting the Bluetooth cable Note The Bluetooth cable connects the Bluetooth connector on the Wi Fi adapter card to the front USB connector on the system board to support the Bluetoo...

Page 154: ...4 At the rear of the computer press the release button 1 to open the PCI card latch 2 Figure 86 Opening the PCI card latch 146 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 155: ... side of the card a small amount until it is removed from the card slot What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Removing the Wi Fi card module To remove the Wi Fi card module do the following Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK...

Page 156: ...Fi antenna cables from the Wi Fi card module Figure 88 Removing the Wi Fi antenna cables 2 Remove the two screws that secure the Wi Fi card module to the Wi Fi adapter card Figure 89 Removing the screws that secure the Wi Fi card module 148 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 157: ...ule What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Installing the Wi Fi units To install the Wi Fi units do the following Chapter 8 Replacing FRUs machine types 10A0 10A1 10A6 10A7 10AG 10AK 10AL and 10BE 149 ...

Page 158: ...lot and then install the two screws to secure the Wi Fi card module to the Wi Fi adapter card Figure 91 Installing the Wi Fi card module Figure 92 Installing the screws that secure the Wi Fi card module 150 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 159: ...he system board on page 72 4 If the installed Wi Fi card module supports the Bluetooth function use a Bluetooth cable to connect the Bluetooth connector on the Wi Fi adapter card to the front USB connector on the system board 5 Pivot the card latch to the closed position to secure the Wi Fi adapter card Figure 94 Installing the Wi Fi adapter card Chapter 8 Replacing FRUs machine types 10A0 10A1 10...

Page 160: ...edia from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 93 3 Install the rear Wi Fi antenna to the rear Wi Fi antenna cable connector attached on the rear of the computer 4 Adjust the angle of the re...

Page 161: ...o to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 156 Installing or removing the front Wi Fi antenna Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or remove the front Wi Fi antenna Installi...

Page 162: ...he stickers on the front antenna Figure 97 Peeling off the paper that protects the stickers 5 Stick the front antenna to the front panel as shown Then insert the front antenna cable through the hole in the front panel Figure 98 Installing the front Wi Fi antenna 154 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 163: ... the front bezel See Removing and reinstalling the front bezel on page 94 4 Disconnect the front antenna cable from the Wi Fi card module 5 Remove the front antenna and cable from the front of the computer Figure 99 Removing the front Wi Fi antenna What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the p...

Page 164: ...parts you need to reinstall the computer cover and reconnect cables To reinstall the computer cover and reconnect cables to your computer do the following 1 Make sure that all components have been reassembled correctly and that no tools or loose screws are left inside your computer See Locating major FRUs and CRUs on page 70 for the locations of various components in your computer 2 If you have re...

Page 165: ... the system board on page 72 7 To update your configuration refer to Chapter 5 Using the Setup Utility program on page 55 Note In most areas of the world Lenovo requires the return of the defective Customer Replaceable Unit CRU Information about this will come with the CRU or will come a few days after the CRU arrives Obtaining device drivers You can obtain device drivers for operating systems tha...

Page 166: ...158 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 167: ...r on page 77 and Locating connectors on the rear of your computer on page 77 to identify the required connector Then use the instructions that come with the option to help you make the connection and install any software or device drivers that are required for the option Removing the computer cover Attention Do not open your computer or attempt any repair before reading and understanding the Chapt...

Page 168: ...e reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to remove and reinstall the front bezel To remove and reinstall the front bezel do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to ...

Page 169: ...ezel inward until it snaps into position Figure 104 Installing the front bezel What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Accessing the system board components and drives Attention Do not open your computer or attempt any repair before reading and understanding t...

Page 170: ...he installation or replacement go to Completing the parts replacement on page 234 Installing or replacing a PCI card Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or replace a PCI card Your computer has various PCI card slots For more information To install o...

Page 171: ... alternate moving each side of the card a small and equal amount until the card is removed from the slot b If the card is held in place by a retaining latch press the retaining latch 1 as shown to disengage the latch Grasp the card and gently pull it out of the slot 5 Remove the new PCI card from its static protective package Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10A...

Page 172: ...mory slots for installing or replacing double data rate 3 small outline dual inline memory modules DDR3 SODIMMs that provide up to a maximum of 32 GB system memory When installing or replacing a memory module use 2 GB 4 GB or 8 GB DDR3 UDIMMs in any combination up to a maximum of 32 GB The following table provides information about the memory module installation rules that you should consider when...

Page 173: ...ion as shown and pivot the drive bay assembly upward at the same time Figure 108 Pivoting the drive bay assembly upward 6 Remove the heat sink fan duct See Replacing the heat sink and fan assembly on page 191 7 Depending on your computer model you might need to remove the PCI Express x16 graphics card for easier access to the memory slots See Installing or replacing a PCI card on page 162 8 Depend...

Page 174: ...nnot be moved easily Figure 111 Installing a memory module 10 Reinstall the PCI Express x16 graphics card if you had removed it See Installing or replacing a PCI card on page 162 11 Reinstall the heat sink fan duct See Replacing the heat sink and fan assembly on page 191 What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement...

Page 175: ... cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Locate the optical drive bay See Locating major FRUs and CRUs on page 80 5 Press the retaining clip 1 in the direction as shown and pivot the drive bay assembly upward at the same time Figure 112 Pivoting the drive bay assembly upward 6 Disconnect the signal cable...

Page 176: ...ive out of the rear of the bay Figure 113 Removing the optical drive 8 Remove the optical drive retainer from the side of the old optical drive and install it on the side of the new optical drive Figure 114 Installing the optical drive retainer 168 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 177: ...he card reader assembly is only available in some models Installing the card reader assembly Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To install the card reader assembly do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords fr...

Page 178: ...ll the new card reader assembly into the card reader drive bay until it snaps into position Then push the new card reader assembly to the left until the screw hole in the metal bracket of the card reader assembly is aligned with the corresponding hole in the chassis Figure 117 Installing the card reader assembly 170 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 179: ...ork with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Replacing the card reader assembly Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To replace the card reader assembly do the following 1 Remove all media...

Page 180: ...ing the drive bay assembly upward 5 Disconnect the card reader cable from the system board 6 Remove the screw that secures the card reader assembly Push the card reader assembly to the right and then remove it from the chassis Figure 121 Removing the card reader assembly 172 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 181: ...rew to secure the card reader assembly to the chassis Figure 123 Installing the screw to secure the card reader assembly 9 Connect the cable of the new card reader assembly to the front USB connector 1 on the system board See Locating parts on the system board on page 82 What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement...

Page 182: ...nnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Press the retaining clip 1 in the direction as shown and pivot the drive bay assembly upward at the same time Figure 124 Pivoting the dr...

Page 183: ... snaps into position Then push the new front USB assembly to the left until the screw hole in the metal bracket of the front USB assembly is aligned with the corresponding hole in the chassis Figure 126 Installing the front USB assembly Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN 175 ...

Page 184: ... do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Replacing the front USB assembly Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To replace the front USB assembly do the following 1 Remove ...

Page 185: ...ay assembly upward 5 Disconnect the front USB assembly cable from the system board 6 Remove the screw that secures the front USB assembly Push the front USB assembly to the right and then remove it from the chassis Figure 130 Removing the front USB assembly Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN 177 ...

Page 186: ...Install the screw to secure the front USB assembly to the chassis Figure 132 Installing the screw to secure the front USB assembly 9 Connect the cable of the new front USB assembly to the front USB connector 1 on the system board See Locating parts on the system board on page 82 What to do next To work with another piece of hardware go to the appropriate section To complete the installation or rep...

Page 187: ...g 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the heat sink fan duct See Replacing the heat sink and fan assembly on page 191 4 Depending on your computer model...

Page 188: ...some models Installing the mSATA solid state drive Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To install the mSATA solid state drive do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect al...

Page 189: ...ate drive downward Figure 136 Installing the mSATA solid state drive into the storage converter 7 Install the two screws that came with the mSATA solid state drive to secure the drive to the storage converter Figure 137 Installing the screws to secure the mSATA solid state drive Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN 181 ...

Page 190: ...te the installation or replacement go to Completing the parts replacement on page 234 Replacing the mSATA solid state drive Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To replace the mSATA solid state drive do the following 1 Remove all media from the drives and turn off all attached devices and the computer ...

Page 191: ...d power cable from the rear of the mSATA solid state drive storage converter 6 Remove the screw that secures the mSATA solid state drive storage converter Then slide the mSATA solid state drive storage converter out of the card reader drive bay Figure 140 Removing the mSATA solid state drive from the chassis Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN 183 ...

Page 192: ... storage converter Figure 142 Removing the mSATA solid state drive from the storage converter 9 Carefully insert the mSATA solid state drive into the mini PCI Express slot on the storage converter at an angle of about 20 degrees Then press the mSATA solid state drive downward Figure 143 Installing the mSATA solid state drive into the storage converter 184 ThinkCentre M83 and M93 p Hardware Mainten...

Page 193: ...til the screw hole in the metal bracket of the mSATA solid state drive is aligned with the corresponding hole in the chassis Figure 145 Installing the mSATA solid state drive into the chassis 12 Reconnect the signal cable and the power cable to the rear of the storage converter What to do next To work with another piece of hardware go to the appropriate section To complete the installation or repl...

Page 194: ...upply or any part that has the following label attached Hazardous voltage current and energy levels are present inside any component that has this label attached There are no serviceable parts inside these components If you suspect a problem with one of these parts contact a service technician To replace the power supply assembly do the following 1 Remove all media from the drives and turn off all...

Page 195: ...own and pivot the drive bay assembly upward at the same time Figure 147 Pivoting the drive bay assembly upward 6 Record the cable routing and cable connections Then disconnect the power supply assembly cables from the system board and all drives 7 Release the power supply assembly cables from any cable clips or ties that secure the cables to the chassis Chapter 9 Replacing FRUs machine types 10A2 ...

Page 196: ...pply assembly 9 Ensure that the new power supply assembly is the correct replacement 10 Install the new power supply assembly into the chassis so that the screw holes in the new power supply assembly are aligned with the corresponding holes in the rear of the chassis Then install the three screws to secure the new power supply assembly Note Use only screws provided by Lenovo 3 4 5 6 7 8 Figure 149...

Page 197: ...tructions on how to replace the power switch unit To replace the power switch unit do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel ...

Page 198: ...le in the chassis and then press the power switch unit as shown until it snaps into position Figure 152 Installing the power switch unit 8 Connect the cable of the new power switch unit to the system board See Locating parts on the system board on page 82 9 Reinstall the front bezel See Removing and reinstalling the front bezel on page 160 What to do next To work with another piece of hardware go ...

Page 199: ...dia from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Locate the heat sink and fan assembly See Locating majo...

Page 200: ... sink and fan assembly to free it from the microprocessor Do not touch the thermal grease while handling the heat sink and fan assembly 9 Position the new heat sink and fan assembly on the system board so that the four screws on the new heat sink and fan assembly are aligned with the corresponding holes on the system board Ensure that the cable of the new heat sink and fan assembly faces toward th...

Page 201: ...m board See Locating parts on the system board on page 82 12 Position the heat sink fan duct on the top of the new heat sink and fan assembly as shown Then press the heat sink fan duct straight down until it snaps into position Figure 156 Installing the heat sink fan duct Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN 193 ...

Page 202: ...es and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Press the retaining clip 1 in the direction as shown and pivot the drive bay assembly upward at the same t...

Page 203: ...lustrated Touch only the edges of the microprocessor Do not touch the gold contacts on the bottom of the microprocessor Do not drop anything onto the microprocessor socket while it is exposed The socket pins must be kept as clean as possible 9 Ensure that the small handle is in the raised position and the microprocessor retainer is fully open 10 Remove the protective cover that protects the gold c...

Page 204: ...ocket 13 Reinstall the heat sink and fan assembly See Replacing the heat sink and fan assembly on page 191 14 Reconnect all cables that were disconnected from the system board See Locating parts on the system board on page 82 What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on pag...

Page 205: ...e bay assembly upward 5 Remove all memory modules and PCI cards that are currently installed See Installing or replacing a memory module on page 164 and Installing or replacing a PCI card on page 162 6 Remove the heat sink and fan assembly from the failing system board See Replacing the heat sink and fan assembly on page 191 Note Do not let the thermal grease on the bottom of the heat sink and fan...

Page 206: ...tem board and install it on the new system board See Replacing the microprocessor on page 194 11 Install the new system board into the chassis by aligning the eight screw holes in the new system board with the corresponding mounting studs on the chassis Then install the eight screws to secure the system board by following the sequence shown in the following illustration 198 ThinkCentre M83 and M93...

Page 207: ...Installing or replacing a PCI card on page 162 14 Refer to your record to connect cables to the new system board You also can refer to Locating parts on the system board on page 82 to help you locate the connectors on the system board and connect cables 15 To complete the replacement go to Completing the parts replacement on page 234 The failing system board must be returned with a microprocessor ...

Page 208: ...ete the installation or replacement go to Completing the parts replacement on page 234 Replacing the cover presence switch Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the cover presence switch which is also known as intrusion switch To replace the cover pre...

Page 209: ...lip 1 as shown and lift the cover presence switch up to remove it from the chassis Figure 165 Removing the cover presence switch Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN 201 ...

Page 210: ... page 234 Replacing the primary hard disk drive Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the primary hard disk drive To replace the primary hard disk drive do the following 1 Remove all media from the drives and turn off all attached devices and the comp...

Page 211: ... FRUs and CRUs on page 80 6 Disconnect the signal cable and the power cable from the primary hard disk drive 7 Pull on the blue handle to slide the primary hard disk drive out of the drive bay Figure 168 Removing the primary hard disk drive 8 Flex the sides of the blue bracket to remove the primary hard disk drive from the bracket Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10A...

Page 212: ...rimary hard disk drive bay until it snaps into position Figure 170 Installing the primary hard disk drive 11 Connect the signal cable and the power cable to the new primary hard disk drive What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Installing or replacing the sec...

Page 213: ...attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Press the retaining clip 1 in the direction as shown and pivot the drive bay assembly upward...

Page 214: ...h the corresponding four tabs on the bottom of the primary hard disk drive bay as shown Then position the carrier onto the bottom of the primary hard disk drive bay so that the tabs on the bay pass through the holes in the carrier 3 4 5 6 7 8 Figure 173 Positioning the carrier onto the bottom of the primary hard disk drive bay 206 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 215: ...4 Installing the secondary hard disk drive carrier 8 Install the screw to secure the secondary hard disk drive carrier to the chassis 3 4 5 6 7 8 Figure 175 Installing the screw to secure the secondary hard disk drive carrier 9 Flex the sides of the blue bracket to remove the primary hard disk drive from the bracket Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN...

Page 216: ...snaps into position 3 4 5 6 7 8 Figure 177 Installing the secondary hard disk drive 12 Connect the signal cable and the power cable to the new secondary hard disk drive What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Replacing the secondary hard disk drive Attention D...

Page 217: ...ee Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Press the retaining clip 1 in the direction as shown and pivot the drive bay assembly upward at the same time Figure 178 Pivoting the drive bay assembly upward 5 Locate the secondary hard disk drive bay See Locating major FRUs and CRUs on page 80 6 Disconnect the signal c...

Page 218: ...ll a new hard disk drive into the blue bracket flex the bracket and align pin 1 pin 2 pin 3 and pin 4 on the bracket with the corresponding holes in the hard disk drive Do not touch the circuit board 5 on the bottom of the hard disk drive Figure 180 Installing the hard disk drive into the bracket 210 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 219: ...rdware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Installing the solid state drive Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install the 2 5 inch solid state drive To install the so...

Page 220: ...responding holes in the adapter Do not touch the circuit board 5 on the bottom of the solid state drive Figure 183 Installing the adapter with a solid state drive into the bracket 3 Install the solid state drive assembly into the hard disk drive bay See Replacing the primary hard disk drive on page 202 What to do next To work with another piece of hardware go to the appropriate section To complete...

Page 221: ... the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Press the retaining clip 1 in the direction as shown and pivot the drive bay assembly upward at the same time Figure 184 Pivoting the drive bay assembly upward 5 Disconnect the front fan assembly cable from the system fan connect...

Page 222: ...aligning the four new rubber mounts on the new front fan assembly with the corresponding holes in the chassis and push the rubber mounts through the holes Pull the tip of each rubber mount from the outer side of the front panel until all rubber mounts go through the holes and secure the front fan assembly in place 3 4 5 6 7 8 Figure 186 Installing the front fan assembly 8 Connect the cable of the ...

Page 223: ...ves and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Locate the front audio and USB assembly See Locating major FRUs and CRU...

Page 224: ...eft until the screw hole in the metal bracket of the front audio and USB assembly is aligned with the corresponding hole in the chassis Figure 189 Installing the front audio and USB assembly 9 Connect the cables of the new front audio and USB assembly cables to the front audio connector and the front USB connector 1 on the system board See Locating parts on the system board on page 82 What to do n...

Page 225: ...es and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Press the retaining clip 1 in the direction as shown and pivot the drive...

Page 226: ...gure 191 Removing the internal speaker 7 Align the new internal speaker with the four metal clips 1 on the inner side of the front panel and then slide the internal speaker to the left side of the chassis until it snaps into position Figure 192 Installing the internal speaker 218 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 227: ...ensor do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Locate the therma...

Page 228: ...hermal sensor as shown and then push the clip out of the outer side of the front panel Then disengage the plastic holder holding the thermal sensor from the chassis Figure 194 Removing the thermal sensor 8 Pull the entire thermal sensor out of the chassis 220 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 229: ...he appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Replacing the Wi Fi units Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the Wi Fi units The Wi Fi units include a Wi Fi adapter card a Wi Fi ...

Page 230: ...n page 159 3 If your computer comes with a Wi Fi card module that supports the Bluetooth function disconnect the Bluetooth cable from the Wi Fi adapter card Note The Bluetooth cable connects the Bluetooth connector on the Wi Fi adapter card to the front USB connector on the system board Figure 196 Disconnecting the Bluetooth cable 4 Hold the Wi Fi adapter card and disconnect the front and rear Wi ...

Page 231: ...the card slot Figure 198 Removing the Wi Fi adapter card What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Removing the Wi Fi card module To remove the Wi Fi card module do the following 1 Remove the Wi Fi adapter card See Removing the Wi Fi adapter card on page 222 Cha...

Page 232: ... PCI Express slot Figure 200 Removing the Wi Fi card module What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Installing the Wi Fi units To install the Wi Fi units do the following 224 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 233: ...ule is firmly inserted and then pivot the module downward Figure 201 Installing the Wi Fi card module 2 Install the two screws to secure the Wi Fi card module to the Wi Fi adapter card Figure 202 Installing the screws to secure the Wi Fi card module Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ 10AM and 10AN 225 ...

Page 234: ...I card retainer to the closed position See Locating parts on the system board on page 82 Figure 204 Installing the Wi Fi adapter card 5 If the installed Wi Fi card module supports the Bluetooth function use a Bluetooth cable to connect the Bluetooth connector on the Wi Fi adapter card to the front USB connector 1 on the system board See Locating parts on the system board on page 82 226 ThinkCentre...

Page 235: ...he rear Wi Fi antenna Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To install the rear Wi Fi antenna do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the...

Page 236: ... hole Figure 206 Installing the rear Wi Fi antenna cable connector 4 Install the rear Wi Fi antenna washer 2 and rear Wi Fi antenna nut 3 to secure the rear Wi Fi antenna cable connector 1 on the Wi Fi adapter card Figure 207 Installing the nut and washer to secure the rear Wi Fi antenna cable connector 228 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 237: ...mpleting the parts replacement on page 234 Removing the rear Wi Fi antenna Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To remove the rear Wi Fi antenna do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets...

Page 238: ...the Wi Fi adapter Figure 210 Removing the rear Wi Fi antenna cable connector What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Installing or removing the front Wi Fi antenna This section provides instructions on how to install or remove the front Wi Fi antenna Installin...

Page 239: ... the computer cover on page 159 3 Remove the front bezel See Removing and reinstalling the front bezel on page 160 4 Press the retaining clip 1 in the direction as shown and pivot the drive bay assembly upward at the same time Figure 211 Pivoting the drive bay assembly upward 5 Peel off the paper that protects the sticker on the front Wi Fi antenna Figure 212 Peeling off the paper that protects th...

Page 240: ...replacement on page 234 Removing the rear Wi Fi antenna Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 To remove the rear Wi Fi antenna do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all...

Page 241: ... adapter Figure 215 Removing the rear Wi Fi antenna cable connector What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 234 Replacing the keyboard or mouse Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety informat...

Page 242: ... Depending on the parts you installed or replaced you might need to confirm the updated information in the Setup Utility program Refer to Chapter 5 Using the Setup Utility program on page 55 To reinstall the computer cover and reconnect cables to your computer do the following 1 Ensure that all components have been reassembled correctly and that no tools or loose screws are left inside your comput...

Page 243: ...bezel 5 Position the computer cover on the chassis so that the rail guides on the bottom of the computer cover engage the rails on the chassis Then push the computer cover to the front of the computer until it snaps into position Install the screws to secure the computer cover 3 4 5 6 7 8 Figure 218 Installing the computer cover Chapter 9 Replacing FRUs machine types 10A2 10A3 10A8 10A9 10AH 10AJ ...

Page 244: ... world Lenovo requires the return of the defective Customer Replaceable Unit CRU Information about this will come with the CRU or will come a few days after the CRU arrives Obtaining device drivers You can obtain device drivers for operating systems that are not preinstalled at http www lenovo com support Installation instructions are provided in readme files with the device driver files 236 Think...

Page 245: ...ir before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to remove the computer cover CAUTION Before you open the computer cover turn off the computer and wait several minutes until the computer is cool To remove the computer cover do the following 1 Remove any media from the drives and turn off all attached devices and the computer 2...

Page 246: ...nnection When installing an external option see Locating connectors on the rear of your computer on page 87 and Locating connectors on the rear of your computer on page 87 to identify the required connector Then use the instructions that come with the option to help you make the connection and install any software or device drivers that are required for the option Installing or removing the ac pow...

Page 247: ... the power adapter cable loop at the rear of the computer as shown Figure 221 Connecting the ac power adapter To remove the ac power adapter do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer Chapter 10 Replacing FRUs machine types...

Page 248: ...the parts replacement on page 286 Installing or removing the vertical stand Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or remove the vertical stand Note The vertical stand and Video Electronics Standards Association VESA mount bracket are optional parts If...

Page 249: ...the following 1 Turn off the computer 2 Align the rear of the computer with the rear of the vertical stand and position the computer on the vertical stand as shown Figure 223 Installing the vertical stand To remove the vertical stand do the following 1 Turn off the computer Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 241 ...

Page 250: ...ormation on page 1 This section provides instructions on how to install or remove the VESA mount bracket Note The VESA mount bracket is only available on some models To install the VESA mount bracket do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connec...

Page 251: ...rews to secure the VESA mount bracket To remove the VESA mount bracket do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 243 ...

Page 252: ...e VESA mount bracket Installing or removing the ac power adapter bracket Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or remove the ac power adapter bracket Note The ac power adapter bracket is only available on some models To remove the ac power adapter bra...

Page 253: ...outlets and disconnect all cables that are connected to the computer 2 Pull the tab 1 and then slide the ac power adapter bracket as shown to remove it from the VESA mount bracket Figure 229 Removing the ac power adapter bracket Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 245 ...

Page 254: ...r before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the optical drive Note The optical drive is only available on some models To replace the optical drive do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and dis...

Page 255: ...ng the optical drive box 4 Remove the screw that secures the optical drive in the optical drive box Use a screwdriver to slide the optical drive forward and then remove the optical drive from the optical drive box Figure 232 Removing the optical drive from the optical drive box Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 247 ...

Page 256: ...ng the optical drive metal plate 6 Align the two screw holes in the optical drive metal plate with the corresponding holes in the new optical drive and then install the two screws to secure the metal plate on the new optical drive Figure 234 Installing the optical drive metal plate 248 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 257: ...stalling the optical drive into the optical drive box 8 Install the screw that secures the optical drive in the optical drive box Figure 236 Installing the screw that secures the optical drive Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 249 ...

Page 258: ...ive box with the two screws on the VESA mount bracket and then slide the optical drive box as shown to install it on the VESA mount bracket Figure 237 Installing the optical drive box 250 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 259: ...vides instructions on how to install or remove the hard disk drive assembly To remove the hard disk drive assembly do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on pa...

Page 260: ...d disk drive assembly do the following 1 Position the hard disk drive assembly on the system board so that the two holes in the hard disk drive bracket are aligned with the standoffs on the system board Slide the hard disk drive assembly as shown until the two screw holes 1 are aligned with the corresponding screw posts on the system board Figure 240 Installing the hard disk drive assembly 252 Thi...

Page 261: ...nderstanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the secondary hard disk drive Note The secondary hard disk drive is installed in the optical drive box and is only available on some models To replace the secondary hard disk drive do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then di...

Page 262: ...om the VESA mount bracket Figure 242 Removing the optical drive box 4 Slide the release button on the optical drive box and then remove the secondary hard disk drive adapter from the optical drive box Figure 243 Removing the secondary hard disk drive adapter from the optical drive box 254 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 263: ...ive from the adapter lift the adapter retaining latch Slide the hard disk drive towards the retaining latch and then lift the hard disk drive out of the adapter Figure 245 Removing the secondary hard disk drive from the adapter 7 Install the four screws to the new hard disk drive Figure 246 Installing the four screws to the hard disk drive Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10A...

Page 264: ...nto position Figure 247 Installing the hard disk drive into the adapter 9 Position the adapter into the adapter bracket and then pivot the adapter downward until it snaps into position Figure 248 Installing the hard disk drive adapter into the adapter bracket 256 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 265: ...racket into the optical drive box until it snaps into position Figure 249 Installing the adapter bracket into the optical drive box Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 257 ...

Page 266: ...ive box with the two screws on the VESA mount bracket and then slide the optical drive box as shown to install it on the VESA mount bracket Figure 250 Installing the optical drive box 258 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 267: ...nstall or remove the I O box Note The I O box is only available on some models The I O box provides the following connectors for connecting to external devices Four USB 2 0 connectors two on the front and two on the rear One serial port Two PS 2 connectors one for keyboard and one for mouse To remove the I O box do the following 1 Remove all media from the drives and turn off all attached devices ...

Page 268: ...bracket Figure 252 Removing the I O box To install the I O box do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 260 ThinkCentre M83 and M93 p Hardware Maintenance Manual ...

Page 269: ... screws on the VESA mount bracket and then slide the I O box as shown to install it on the VESA mount bracket Figure 253 Installing the I O box Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 261 ...

Page 270: ...nstalling or replacing a memory module use 2 GB 4GB or 8GB DDR3 SODIMMs in any combination up to a maximum of 16 GB To install or replace a memory module do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cove...

Page 271: ...with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 286 Replacing the battery Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 Your computer has a special type of memory that maintains the date time and settings for...

Page 272: ...he battery See Locating parts on the system board on page 90 4 Remove the hard disk drive assembly to get access to the battery See Installing or removing the hard disk drive assembly on page 251 5 Remove the old battery Figure 257 Removing the old battery 6 Install a new battery Figure 258 Installing a new battery 7 Reinstall the hard disk drive assembly See Installing or removing the hard disk d...

Page 273: ...er Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 237 3 Locate the power switch board See Locating major FRUs and CRUs on page 88 4 Remove the hard disk drive assembly See Installing or removing the hard disk drive assembly on page 251 5 Disconnect the power swi...

Page 274: ... piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 286 Replacing the Wi Fi card module Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the Wi Fi card module Note The Wi Fi ...

Page 275: ... it Then pull the Wi Fi card module to remove it from the mini PCI Express card slot Note Do not over pivot the Wi Fi card module Figure 262 Removing the Wi Fi card module 7 Insert the new Wi Fi card module into the mini PCI Express card slot Then pivot the Wi Fi card module downward until it snaps into position and is secured by the plastic post Note Do not touch the notched edge of the Wi Fi car...

Page 276: ...tenna do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 237 3 Remove the hard disk drive assembly See Installing or removing the hard disk drive assembly on page ...

Page 277: ...t the signal cable and power cable to the hard disk drive To remove the front Wi Fi antenna do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Disconnect the signal cable and power cable from the hard disk drive 3 Disconnect the ...

Page 278: ... or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to install or remove the rear Wi Fi antenna Note The rear Wi Fi antenna is only available on some models To install the rear Wi Fi antenna do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect a...

Page 279: ... all cables that are connected to the computer 2 Straighten the rear Wi Fi antenna so that it can be more easily twisted 3 Hold the thicker end of the rear Wi Fi antenna and unscrew the Wi Fi antenna from the rear of the computer Figure 271 Removing the rear Wi Fi antenna Replacing the internal speaker Attention Do not open your computer or attempt any repair before reading and understanding the C...

Page 280: ...ove the computer cover See Removing the computer cover on page 237 3 Locate the internal speaker in the computer See Locating major FRUs and CRUs on page 88 4 Remove the hard disk drive assembly See Installing or removing the hard disk drive assembly on page 251 5 Disconnect the internal speaker cable from the system board 6 Release the internal speaker cable from the retaining clip on the side of...

Page 281: ...ng the internal speaker 8 Press the tab 1 as shown and insert the new internal speaker into the internal speaker holder until the new internal speaker snaps into position and is secured by the tab 1 Figure 274 Installing the internal speaker Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 273 ...

Page 282: ... cover presence switch Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the cover presence switch also known as intrusion switch To replace the cover presence switch do the following 1 Remove all media from the drives and turn off all attached devices and the co...

Page 283: ...ce switch to the thermal module Figure 277 Installing the cover presence switch 7 Connect the cable of the new cover presence switch to the cover presence switch connector on the system board See Locating parts on the system board on page 90 Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 275 ...

Page 284: ... system fan CAUTION Hazardous moving parts Keep fingers and other body parts away To replace the system fan do the following 1 Remove all media from the drives and turn off all attached devices and the computer Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Remove the computer cover See Removing the computer cover on page 237 ...

Page 285: ...the system fan to the thermal module and then lift the system fan to remove it from the computer Figure 278 Removing the system fan Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 277 ...

Page 286: ...Completing the parts replacement on page 286 Replacing the thermal module This section provides instructions on how to replace the thermal module Attention Do not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 CAUTION The thermal module might be very hot Before you open the computer cover turn off the computer and wait several m...

Page 287: ... the thermal module to the system board a Partially remove screw 1 then fully remove screw 2 and then fully remove screw 1 b Partially remove screw 3 then fully remove screw 4 and then fully remove screw 3 Lift and pull the thermal module to remove it from the system board Notes Carefully remove the four screws from the system board to avoid any possible damage to the system board The four screws ...

Page 288: ...not open your computer or attempt any repair before reading and understanding the Chapter 1 Safety information on page 1 This section provides instructions on how to replace the microprocessor CAUTION The thermal module and microprocessor might be very hot Before you open the computer cover turn off the computer and wait several minutes until the computer is cool To replace the microprocessor do t...

Page 289: ...processor Do not touch the gold contacts on the bottom Do not drop anything onto the microprocessor socket while it is exposed The socket pins must be kept as clean as possible Figure 283 Removing the microprocessor 6 Ensure that the small handle is in the raised position and the microprocessor retainer is fully open 7 Remove the protective cover that protects the gold contacts of the new micropro...

Page 290: ...handle to secure the new microprocessor in the socket 10 Reinstall the thermal module See Replacing the thermal module on page 278 What to do next To work with another piece of hardware go to the appropriate section To complete the installation or replacement go to Completing the parts replacement on page 286 Replacing the system board Attention Do not open your computer or attempt any repair befo...

Page 291: ...cing a memory module on page 262 5 Remove the system fan See Replacing the system fan on page 276 6 Remove the thermal module See Replacing the thermal module on page 278 7 Remove the Wi Fi card module if your computer has one See Replacing the Wi Fi card module on page 266 8 Record the cable routing and cable connections and then disconnect all cables from the system board 9 Remove the five screw...

Page 292: ...the new system board into the chassis by aligning the five screw holes in the new system board with the corresponding mounting studs on the chassis Then install the five screws to secure the system board by installing screw 5 to screw 1 as shown in the following illustration Figure 287 Installing the five screws to secure the system board 13 Reinstall the thermal module See Replacing the thermal m...

Page 293: ...ainer and then put the lever to the locked position to secure the retainer in place 2 Note the orientation of the socket cover and install one side of the socket cover into the microprocessor socket Carefully press the other side of the socket cover downward until the socket cover snaps into position Note Your microprocessor socket and cover might look slightly different from the illustration Figu...

Page 294: ... Depending on the parts you installed or replaced you might need to confirm the updated information in the Setup Utility program Refer to Chapter 5 Using the Setup Utility program on page 55 To reinstall the computer cover and reconnect cables to your computer do the following 1 Ensure that all components have been reassembled correctly and that no tools or loose screws are left inside your comput...

Page 295: ... chassis and then push the cover to the rear of the computer until it snaps into position Figure 290 Installing the computer cover Chapter 10 Replacing FRUs machine types 10A4 10A5 10AA 10AB 10DF 10DG 10DH 10DJ 10E8 10E9 10EA and 10EB 287 ...

Page 296: ...up Utility program on page 55 Note In most areas of the world Lenovo requires the return of the defective Customer Replaceable Unit CRU Information about this will come with the CRU or will come a few days after the CRU arrives Obtaining device drivers You can obtain device drivers for operating systems that are not preinstalled at http www lenovo com support Installation instructions are provided...

Page 297: ...n the system board After you replace the system board the VPD must be updated To update the VPD see Flash update procedures on page 289 BIOS levels An incorrect level of BIOS can cause false errors and unnecessary FRU replacement Use the following information to determine the current level of BIOS installed in the computer the latest BIOS available for the computer and where to obtain the latest l...

Page 298: ...N However if you do want to change the machine type and model press Y and then type in the machine type and model and press Enter 9 Follow the instructions on the screen to complete the update After the update is completed remove the disc from the optical drive 10 Restart your computer and start the Setup Utility program See Starting the Setup Utility program on page 55 11 From the Setup Utility p...

Page 299: ... Then disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer 2 Open the computer cover See Removing the computer cover on page 93 3 Remove the hard disk drive See Replacing the primary hard disk drive on page 126 4 Locate the Clear CMOS Recovery jumper on the system board See Locating parts on the system board on page 90 5 Remove any cables ...

Page 300: ...a single event or a daily event Wake on LAN If the computer has a properly configured token ring or Ethernet LAN adapter card that is Wake on LAN enabled and there is remote network management software you can use the Wake on LAN feature When you set Wake on LAN to Enabled the computer will turn on when it receives a specific signal from another computer on the local area network LAN To enable the...

Page 301: ...ublication Lenovo may make improvements and or changes in the product s and or the program s described in this publication at any time without notice The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons The information contained in this document does not affect or change Lenovo...

Page 302: ... and other limited viewing uses only unless otherwise authorized by Macrovision Corporation Reverse engineering or disassembly is prohibited European conformance CE mark Trademarks The following terms are trademarks of Lenovo in the United States other countries or both Lenovo The Lenovo logo Rescue and Recovery ThinkCentre ThinkVantage Microsoft Windows and Windows Media are trademarks of the Mic...

Page 303: ...ector 69 79 88 drivers device 157 236 288 drives bays 76 85 specifications 76 85 E environment operating 27 29 Ethernet connector 70 79 88 exiting Setup Utility 60 external options installing 159 238 F failure recovering from POST BIOS 291 flashing the BIOS 290 front connectors controls indicators 67 77 86 front audio and USB assembly replacing 135 215 front bezel front bezel removing 94 160 front...

Page 304: ...replacing 133 rear Wi Fi antenna installing or removing 270 rear Wi Fi antenna installing removing 152 227 recovering from a POST BIOS update failure 291 recovery boot block 291 removing computer cover 93 159 237 replacing battery 110 179 263 card reader 102 105 card reader assembly 171 cover presence switch 274 front USB assembly 109 176 hard disk drive 202 hard disk drive assembly 251 heat sink ...

Page 305: ...eshooting basic 35 troubleshooting diagnostics 35 U updating flashing the BIOS 290 updating flashing the BIOS 291 USB 3 0 connector 88 USB connector 70 80 using passwords 55 Setup Utility 55 V vertical stand installing or removing 240 VESA mount bracket installing or removing 242 VGA monitor connector 70 80 88 viewing and changing settings 55 W Wi Fi card module replacing 266 Wi Fi units Wi Fi ada...

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