Lenovo Thinkcentre M73z Hardware Maintenance Manual (hmm) For English

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Machine Types: 10BB and 10BC - Page 1

ThinkCentre M73z Hardware Maintenance Manual Machine Types: 10BB and 10BC

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Fourth Edition (September 2015) - Page 2

Note: Before using this information and the product it supports, be sure to read the general information under Appendix A “Notices” on page 123. Fourth Edition (September 2015) © Copyright Lenovo 2013, 2015. 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.

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Contents - Page 3

Contents About this manual . . . . . . . . . . . . . . iii Chapter 1. Safety information . . . . . . 1 General safety . . . . . . . . . . . . . . . . 1 Electrical safety . . . . . . . . . . . . . . . 1 Safety inspection guide . . . . . . . . . . . . 3 Handling electrostatic discharge-sensitive devices . . . . . . . . . . . . . . . . . . 3 Grounding requirements . . . . . . . . . . . . 4 Safety notices (multi-lingual translations) . . . . . 4 Chapter 2. General information . . . . 27 Specifications . . . . . . . . . . . . . . . 27 Lenovo programs . . . . . . . . . . . . . 27 Accessing a pro..

ThinkCentre M73z Hardware Maintenance Manual - Page 4

Replacing the 2.5-inch solid-state drive or hybrid hard disk drive. . . . . . . . . . . . . . . 83 Replacing the optical drive . . . . . . . . . . 85 Replacing the converter board . . . . . . . . 86 Removing and installing the system board shield . 88 Replacing the rear I/O assembly. . . . . . . . 89 Replacing the internal speakers . . . . . . . . 92 Removing and installing the VESA mount bracket . 93 Replacing the power supply assembly . . . . . 94 Replacing the microprocessor fan . . . . . . . 96 Replacing the integrated camera . . . . . . . 97 Replacing the heat sink assembly . . . . . ...

About this manual - Page 5

About this manual This manual provides service and reference information for ThinkCentre ® computers listed on the front cover. Chapter 6 “Symptom-to-FRU index” on page 59 and Chapter 9 “Additional service information” on page 119 are not specific to any machine type and are applicable to all ThinkCentre computers. For major Field Replaceable Units (FRU) locations and Customer Replaceable Unit (CRU) identification, see Chapter 7 “Locations” on page 65. For FRU replacement instructions, see Chapter 8 “Replacing FRUs” on page 73. For FRU part numbers, go to: http:/www.lenov..

General safety - Page 7

Chapter 1. Safety information This chapter contains the safety information that you need to be familiar with before servicing a computer. General safety Follow these rules to ensure general safety: • Observe good housekeeping in the area of the machines during and after maintenance. • When lifting any heavy object: 1. Ensure you can stand safely without slipping. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift. 4. Lift by standing or by pushing up with your leg muscles; this action remov..

ThinkCentre M73z Hardware Maintenance Manual - Page 8

systems, networks, and modems before you open the computer covers, unless instructed otherwise in the installation and configuration procedures. Observe the following rules when working on electrical equipment. Important: Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from electrical..

Safety inspection guide - Page 9

– Use caution; do not become a victim yourself. – Switch off power. – Send another person to get medical aid. Safety inspection guide The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service personnel from injury. This guide addresses only those items. However, good judgment should be used to identify potential safety hazards due to attachment of features or options not covered by this inspection guide. If any unsafe c..

ThinkCentre M73z Hardware Maintenance Manual - Page 10

When handling ESD-sensitive parts: • Keep the parts in protective packages until they are inserted into the product. • Avoid contact with other people while handling the part. • Wear a grounded wrist strap against your skin to eliminate static on your body. • Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap. • Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices. • Select a grounding system, such as tho..

To Connect - Page 11

• Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. • Connect all power cords to a properly wired and grounded electrical outlet. • Connect to properly wired outlets any equipment that will be attached to this product. • When possible, use one hand only to connect or disconnect signal cables. • Never turn on any equipment when there is evidence of fire, water, or structural damage. • Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the..

ThinkCentre M73z Hardware Maintenance Manual - Page 12

DANGER Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following: Laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam. ≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) CAUTION: Use safe practices when lifting. CAUTION: The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, en..

Chapter 1 - Page 13

Chapter 1 . Safety information 7

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ThinkCentre M73z Hardware Maintenance Manual - Page 14

≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) 1 2 PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. 8 ThinkCentre M73z Hardware Maintenance Manual

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Para Conectar: - Page 15

Para evitar risco de choque elétrico: • Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração deste produto durante uma tempestade com raios. • Conecte todos os cabos de alimentação a tomadas elétricas corretamente instaladas e aterradas. • Todo equipamento que for conectado a este produto deve ser conectado a tomadas corretamente instaladas. • Quando possível, utilize apenas uma das mãos para conectar ou desconectar cabos de sinal. • Nunca ligue nenhum equipamento quando houver evidência de fogo, água ou danos estruturais. • ..

ThinkCentre M73z Hardware Maintenance Manual - Page 16

• A utilização de controles ou ajustes ou a execução de procedimentos diferentes dos especificados aqui pode resultar em exposição prejudicial à radiação. PERIGO Alguns produtos a laser contêm diodo de laser integrado da Classe 3A ou da Classe 3B. Observe o seguinte: Radiação a laser quando aberto. Não olhe diretamente para o feixe a olho nu ou com instrumentos ópticos e evite exposição direta ao feixe. ≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) CUIDADO: Utilize procedimentos de segurança para levantar equipamentos. CUIDADO: O botão de controle de alimenta..

Chapter 1 - Page 17

Chapter 1 . Safety information 11

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ThinkCentre M73z Hardware Maintenance Manual - Page 18

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Chapter 1 - Page 19

1 2 Chapter 1 . Safety information 13

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ThinkCentre M73z Hardware Maintenance Manual - Page 20

DANGER Le courant électrique provenant de l'alimentation, du téléphone et des câbles de transmission peut présenter un danger. Pour éviter tout risque de choc électrique : • Ne manipulez aucun câble et n'effectuez aucune opération d'installation, d'entretien ou de reconfiguration de ce produit au cours d'un orage. • Branchez tous les cordons d'alimentation sur un socle de prise de courant correctement câblé et mis à la terre. • Branchez sur des socles de prise de courant correctement câblés tout équipement connecté à ce produit. • Lorsque cela est possible, n'utili..

≥18 kg (37 lb) - Page 21

ATTENTION: Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM, des unités à fibres optiques, ou des émetteurs) sont installés, prenez connaissance des informations suivantes : • Ne retirez pas le carter. En ouvrant l'unité de CD-ROM ou de DVD-ROM, vous vous exposez au rayonnement dangereux du laser. Aucune pièce de l'unité n'est réparable. • Pour éviter tout risque d'exposition au rayon laser, respectez les consignes de réglage et d'utilisation des commandes, ainsi que les procédures décrites dans le présent manuel. DANGER Certains produits à laser conti..

Zum Anschließen der Kabel gehen Sie wie folgt vor - Page 22

1 2 VORSICHT An Netz-, Telefon- und Datenleitungen können gefährliche Spannungen anliegen. Aus Sicherheitsgründen: • Bei Gewitter an diesem Gerät keine Kabel anschließen oder lösen. Ferner keine Installations-, Wartungs- oder Rekonfigurationsarbeiten durchführen. • Gerät nur an eine Schutzkontaktsteckdose mit ordnungsgemäß geerdetem Schutzkontakt anschließen. • Alle angeschlossenen Geräte ebenfalls an Schutzkontaktsteckdosen mit ordnungsgemäß geerdetem Schutzkontakt anschließen. • Die Signalkabel nach Möglichkeit einhändig anschließen oder lösen, um einen Stromsc..

Chapter 1 - Page 23

• über 100 C erhitzen. • reparieren oder zerlegen. Die örtlichen Bestimmungen für die Entsorgung von Sondermüll beachten. ACHTUNG: Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVD- aufwerken, Einheiten mit Lichtwellenleitertechnik oder Sendern) Folgendes beachten: • Die Abdeckungen nicht entfernen. Durch Entfernen der Abdeckungen des Lasergeräts können gefährliche Laserstrahlungen freigesetzt werden. Das Gerät enthält keine zu wartenden Teile. • Werden Steuerelemente, Einstellungen oder Durchführungen von Prozeduren anders als hier angegeben verwendet, ka..

ThinkCentre M73z Hardware Maintenance Manual - Page 24

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Chapter 1 - Page 25

1 2 Chapter 1 . Safety information 19

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ThinkCentre M73z Hardware Maintenance Manual - Page 26

PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere pericolosa. Per evitare il rischio di scosse elettriche: • Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la riconfigurazione del prodotto durante un temporale. • Collegare tutti i fili elettrici a una presa di alimentazione correttamente cablata e dotata di messa a terra. • Collegare alle prese elettriche appropriate tutte le apparecchiature che verranno utilizzate per questo prodotto. • Se possibile, utilizzare solo una..

Chapter 1 - Page 27

ATTENZIONE: Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a fibre ottiche o trasmittenti), tener presente quanto segue: • Non rimuovere gli sportelli. L'apertura di un'unità laser può determinare l'esposizione a radiazioni laser pericolose. All'interno dell'unità non vi sono parti su cui effettuare l'assistenza tecnica. • L'utilizzo di controlli, regolazioni o l'esecuzione di procedure non descritti nel presente manuale possono provocare l'esposizione a radiazioni pericolose. PERICOLO Alcune unità laser contengono un diodo laser di Classe 3A o Class..

ThinkCentre M73z Hardware Maintenance Manual - Page 28

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Chapter 1 - Page 29

1 2 PELIGRO La corriente eléctrica procedente de cables de alimentación, teléfonos y cables de comunicación puede ser peligrosa. Para evitar el riesgo de descarga eléctrica: • No conecte ni desconecte los cables ni realice ninguna tarea de instalación, 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..

ThinkCentre M73z Hardware Maintenance Manual - Page 30

• No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales. • Desconecte los cables de alimentación, los sistemas de telecomunicaciones, las redes y los módems conectados antes de abrir las cubiertas de los dispositivos, a menos que se indique lo contrario en los procedimientos de instalación y configuración. • Conecte y desconecte los cables, como se describe en la tabla siguiente, cuando instale, mueva o abra las cubiertas de este producto o de los dispositivos conectados. Para conectar Para desconectar 1. APÁGUELO todo. 2. En primer lugar, conecte..

Chapter 1 - Page 31

Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase 3B. Tenga en cuenta lo siguiente: Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo láser, ni siquiera con instrumentos ópticos, y evite exponerse directamente al rayo láser. ≥18 kg ≥32 kg ≥55 kg PRECAUCIÓN: 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 disp..

ThinkCentre M73z Hardware Maintenance Manual - Page 32

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Specifications - Page 33

Chapter 2. General information This chapter provides general information that applies to all machine types supported by this publication. Specifications This section lists the physical specifications for your computer. With a frame stand With a full-function monitor stand With a tilt-only monitor stand Height 404.00 mm (15.91 inches) 422.00 mm (16.61 inches) 404.5 mm (15.93 inches) Width 506.00 mm (19.92 inches) 506.00 mm (19.92 inches) 506 mm (19.92 inches) Depth 91.50 mm (3.60 inches) 250.00 mm (9.84 inches) 175.5 mm (6.91 inches) Weight (maximum) 7.80 kg (17.20 lbs) 8.60 kg (18.96 lbs)..

ThinkCentre M73z Hardware Maintenance Manual - Page 34

Accessing a program on your computer Note: For Windows 7, some of the Lenovo programs might be ready to be installed, so you need to install them manually. Then, you can access and use these programs. To install a program that is ready to be installed, open the Lenovo ThinkVantage ® Tools program, and then view the program icons using Tiles. Follow the instructions under greyed-out icons to locate the icon for the desired program. Double-click the icon to install the program. To access a program on your computer, do one of the following: • For Windows 7 or Windows 10: – From Windows Se..

Chapter 2 - Page 35

– Create Recovery Media The Create Recovery Media program enables you to restore only the C drive or the entire storage drive to the factory-default settings. – Lenovo PowerENGAGE The Lenovo PowerENGAGE program enables you to register your computer with Lenovo. – Message Center Plus The Message Center Plus program automatically displays messages informing you about important notices from Lenovo, such as alerts on system updates and alerts on conditions that require your attention. – Rescue and Recovery ® The Rescue and Recovery program is a one-button recovery and restore solution...

ThinkCentre M73z Hardware Maintenance Manual - Page 36

– PC Cloud Manager The PC Cloud Manager (PCM) program is a browser-based solution for client-computer management. The PCM program has two components: PCM Server and PCM Client. PCM Server is installed on the computer, where the administrator performs management work, such as power management and security management. PCM Client is installed on the client computers to be managed. The administrator can log in to PCM Server to manage computers with PCM Client installed, through the Internet Web browser. • For Windows 8, Windows 8.1, and Windows 10: – Lenovo Companion Your computer’s bes..

Lenovo Support Web site - Page 37

Lenovo Support Web site Technical support information 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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ThinkCentre M73z Hardware Maintenance Manual - Page 38

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Problem determination tips - Page 39

Chapter 3. General checkout Attention The drives in the computer you are servicing might have been rearranged or the drive startup sequence changed. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be overwritten if you select an incorrect drive. General error messages appear if a problem or conflict is found by an application program, the operating system, or both. For an explanation of these messages, refer to the information supplied with that software package. Before replacing any FRUs, ensure that the latest level of BIOS is ins..

ThinkCentre M73z Hardware Maintenance Manual - Page 40

– Has this configuration ever worked? – If it has been working, what changes were made prior to it failing? – Is this the original reported failure? • Diagnostics version – Type and version level • Hardware configuration – Print (print screen) configuration currently in use – BIOS level • Operating system software – Type and version level Notes: To eliminate confusion, identical systems are considered identical 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..

Safety,Warranty,andSetupGuide - Page 41

Chapter 4. Troubleshooting and diagnostics This chapter provides information about diagnosing and troubleshooting computer problems. If your computer problem is not described here, see “Lenovo Support Web site” on page 31 for additional troubleshooting resources. Basic troubleshooting The following table provides information to help you troubleshoot your computer problems. Note: If you cannot correct the problem, have the computer serviced. For a list of service and support telephone numbers, refer to the Safety,Warranty,andSetupGuide that comes with your computer or go to the Lenovo Su..

ThinkCentre M73z Hardware Maintenance Manual - Page 42

Symptom Action The operating system does not start. Verify that: • The startup sequence includes the device where the operating system resides. Usually, the operating system is on the hard disk drive. For more information, see “Selecting a startup device” on page 55. The computer beeps multiple times before the operating system starts. Verify that no keys are stuck. Accessing Control Panel on the Windows 8 or Windows 8.1 operating system On the Windows operating system, you can view and change computer settings through Control Panel. To access Control Panel on the Windows 8 or Windows..

Troubleshooting - Page 43

• For Windows 8 or Windows 8.1: See “Accessing Control Panel on the Windows 8 or Windows 8.1 operating system” on page 36. • For Windows 10: Right-click the Start button to open the Start context menu, and then click Control Panel . b. View Control Panel using Large icons or Small icons, and then click Recovery ➙ Open System Restore . c. Follow the instructions on the screen. If this does not correct the problem, continue with the next step. 6. Run the diagnostic program. See “Lenovo Solution Center” on page 52 for more information. • If the diagnostic program detects a hard..

ThinkCentre M73z Hardware Maintenance Manual - Page 44

Audio problems Select your symptom from the following list: • “No audio in Windows” on page 38 • “An audio disc or AutoPlay-enabled disc does not automatically play when it is inserted into a drive” on page 38 • “Sound comes from one external speaker only” on page 38 • “No audio in DOS applications or games” on page 39 No audio in Windows Symptom: No audio in Windows Actions: • If you are using powered external speakers that have an On/Off control, verify that the On/Off control is set to the On position and the speaker power cable is connected to a properly ground..

CD problems - Page 45

• Right-click the speaker icon in the Windows desktop notification area, and then click Playback devices . Click the Playback tab, select Speakers, and then click Properties . Click Balance on the Levels tab, and verify that the Balance setting is set correctly. If these actions do not correct the problem, you might have a failing speaker. Have the speaker serviced. If you need technical assistance, see “Lenovo Support Web site” on page 31. No audio in DOS applications or games Symptom: No audio in DOS applications or games Actions: • Ensure that the DOS application or game is con..

ThinkCentre M73z Hardware Maintenance Manual - Page 46

DVD problems Select your symptom from the following list: • “Black screen instead of DVD video” on page 40 • “DVD movie will not play” on page 40 • “No audio or intermittent audio while playing DVD movie” on page 40 • “Playback is very slow or choppy” on page 40 • “Invalid disc or no disc found message” on page 41 Black screen instead of DVD video Symptom: Black screen instead of DVD video Actions: • Restart the DVD player program. • Close any open files, turn off the computer, and then restart the computer. • Try a lower screen resolution or color depth..

Invalid disc or no disc found message - Page 47

• Ensure that video resolution is set to less than 1152 x 864. 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. Invalid disc or no disc found message Symptom: Invalid disc or no disc found message Actions: • Ensure that a DVD disc is in the drive with the shiny side of the disc facing down. • Ensure that video resolution is set to less than 1152 x 864. • On computers that have a CD-ROM or CD-RW drive in addition to a DVD-ROM drive, ensure that the DVD disc is in the dr..

Keyboard, mouse, or pointing device problems - Page 48

If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 52. If you need technical assistance, see “Lenovo Support Web site” on page 31. "No Operating System Found" message or the system not starting from the correct hard disk drive Symptom: "No Operating System Found" message or the system not starting from the correct hard disk drive Actions: • Ensure that all hard disk drive signal cables and power cables are connected correctly. Refer to “Replacing the 3.5-inch hard disk drive or hybrid hard disk dri..

Monitor problems - Page 49

To clean an optical mouse, do the following: 1. Turn off your computer. 2. Disconnect the mouse cable from the computer. 3. Turn the mouse upside down to check the lens. a. If there is a smudge on the lens, gently clean the area with a plain cotton-tipped swab. b. If there is debris in the lens, gently blow the debris away from the area. 4. Check the surface on which you are using the mouse. If you have a very intricate picture or pattern beneath the mouse, it may be difficult for the digital signal processor (DSP) to determine changes in the mouse position. 5. Reconnect the mouse cable to..

ThinkCentre M73z Hardware Maintenance Manual - Page 50

Select your symptom from the following list: • “Wrong characters appear on the screen” on page 44 • “The monitor works when you turn on the computer, but goes blank after some period of computer inactivity” on page 44 • “The monitor works when you turn on the computer, but goes blank when you start some application programs” on page 44 • “The image appears to be flickering” on page 44 • “The image is discolored” on page 45 Wrong characters appear on the screen Symptom: Wrong characters appear on the screen. Action: Have the computer serviced. For details, see ..

The image is discolored - Page 51

– For Windows 7, Windows 8, or Windows 8.1: Click Screen resolution ➙ Advanced settings . – For Windows 10: Click Display settings . On the Display tab, click Advanced display settings ➙ Display adapter properties . 3. Click the Monitor tab, and then reset the refresh rate to be the highest and noninterlaced. The image is discolored Symptom: The image is discolored. Action: The monitor might be affected by interference from nearby equipment. Magnetic fields around other devices, such as transformers, appliances, fluorescent lights, and other monitors might be causing the problem. ..

ThinkCentre M73z Hardware Maintenance Manual - Page 52

If you configured the adapter for full duplex, ensure that the switch port is also configured for full duplex. Setting the wrong duplex mode can degrade performance, 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 referring to the “Sol..

Bluetooth problem - Page 53

Bluetooth problem Symptom: Sound does not come from the Bluetooth headset or headphone but comes from the local speaker even though the headset or headphone is connected using the 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 Panel. 3. Click Hardware and Sound ➙ Sound . 4. Select the Playback tab. 5. If you are using the Headset profile, select Bluetooth Hands-free Audio and click the Set Default button. If you are using the AV profile, select Stereo Audio and click th..

ThinkCentre M73z Hardware Maintenance Manual - Page 54

– 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 device drivers are installed correctly. 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. Performance and lockup problems Poor performance and lockup problems can be a result of any of the following: • “Insufficient free hard disk drive space” on page 48 • ..

Insufficient memory - Page 55

Note: Depending on the volume of the storage drives and amount of data stored on the storage drives, the disk-defragmentation process might take up to several hours. 1. Close any open programs and windows. 2. Depending on your Windows version, do one of the following: • For Windows 7: Click the Start button to open the Start menu, and then click Computer . • For Windows 8: Open File Explorer, and then click Computer . • For Windows 8.1: Open File Explorer. • For Windows 10: Click the Start button to open the Start menu, and then click File Explorer ➙ This PC . 3. Right-click your ..

ThinkCentre M73z Hardware Maintenance Manual - Page 56

Serial connector problems Use this information to troubleshoot the serial connector and devices attached to the serial connector. Symptom: Serial connector cannot be accessed. Actions: • Ensure that the serial cable is securely connected to the serial connector on the computer and to the serial device. If the serial device has its own power cord, ensure that it is attached to a properly grounded electrical outlet. • If the serial device has its own On/Off switch, ensure that it is in the On position. • If the serial device has an Online switch, ensure that it is in the Online position..

USB problems - Page 57

– Other software works on your computer. – The software you are using works correctly on another computer. • If you received any error messages while using the software program, see the printed documentation supplied with the software or the help system for that software for a description of the messages and solutions to the problem. • Check with your software manufacturer to see if any updates are available. Many software manufacturers make updates available from the World Wide Web. • If the software program used to work correctly, but does not work correctly now, do the followin..

Table1. ItemsonthemainscreenoftheUEFIdiagnosticprogram - Page 58

Notes: 1. Your computer is preinstalled with the Lenovo Solution Center program for diagnostic purposes. For more information about the Lenovo Solution Center program, see “Lenovo Solution Center” on page 52. 2. If you are unable to isolate and repair the problem yourself after running the diagnostic program, save and print the log files created by the diagnostic program. You will need the log files when you speak to a Lenovo technical support representative. Lenovo Solution Center The Lenovo Solution Center program enables you to troubleshoot and resolve computer problems. It combine..

Starting the Setup Utility program - Page 59

Chapter 5. Using the Setup Utility program The Setup Utility program is used to view and change the configuration settings of your computer, regardless of which operating system you are using. However, the operating system settings might override any similar settings in the Setup Utility program. Starting the Setup Utility program To start the Setup Utility program, do the following: 1. Ensure that your computer is turned off. 2. Repeatedly press and release the F1 key when turning on the computer. When you hear multiple beeps or see a logo screen, release the F1 key. Note: If a Power-On P..

ThinkCentre M73z Hardware Maintenance Manual - Page 60

• Administrator Password • Hard Disk Password You do not have to set any passwords to use your computer. However, using passwords improves computing security. If you decide to set any passwords, read the following sections. Password considerations A password can be any combination of up to 64 alphabetic and numeric characters. For security reasons, it is recommended to use a strong password that cannot be easily compromised. To set a strong password, use the following guidelines: • Have at least eight characters in length • Contain at least one alphabetic character and one numeric c..

Enabling or disabling a device - Page 61

To erase a lost or forgotten password, 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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer stand. 4. Remove the computer cover. 5. Remove the system board shield. 6. Locate the Clear Complementary Metal Oxide Semic..

ThinkCentre M73z Hardware Maintenance Manual - Page 62

Selecting a temporary startup device Use this procedure to select a temporary startup device. Note: Not all discs and hard disk drives are bootable. 1. Turn off your computer. 2. Repeatedly press and release the F12 key when turning on the computer. When the Please select boot device window displays, release the F12 key. 3. Select the desired startup device and press Enter. The computer will start up from the device you selected. Note: Selecting a startup device from the Please select boot device window does not permanently change the startup sequence. Selecting or changing the startup devi..

Chapter 5 - Page 63

1. Start the Setup Utility program. 2. From the Setup Utility program main menu, select Power ➙ Automatic Power On , and press Enter. 3. Select Wake Up on Alarm and press Enter. Then follow the instructions on the screen. 4. Press F10 to save changes and exit the Setup Utility program. Press Enter when prompted to confirm the exit. • Enabling the after power loss feature The after power loss feature enables your computer to wake up when the power supply resumes after a sudden loss of electricity. To enable the after power loss feature, do the following: 1. Start the Setup Utility progr..

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Hard disk drive boot error - Page 65

Chapter 6. Symptom-to-FRU index The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first. Always begin with Chapter 3 “General checkout” on page 33. This index can also be used to help you decide which FRUs to have available when servicing a computer. If you are unable to correct the problem using this index, go to “Undetermined problems” on page 63. Notes : • If you have both an error message and an incorrect audio response, diagnose the error message first. • If you cannot run the diagnostic tests or you get a diagnostic error ..

ThinkCentre M73z Hardware Maintenance Manual - Page 66

The following table describes the beep symptoms. Beep symptom FRU/Action 2 short beeps CMOS setting error Common error code, see the detail failure information in “POST error codes” on page 60. 3 short and 1 long beeps DRAM memory error Perform the following actions in order. 1. Make sure the memory module(s) are properly seated in the connector(s). 2. Replace the memory module(s). 3. Replace the system board. POST error codes Each time you power-on the system, it performs a series of tests that check the operation of the system and some options. This series of tests is called the Power..

Miscellaneous error conditions - Page 67

Error code POST error message Description/Action 1820 More than one external fingerprint reader are attached. Power off and remove all but the reader that you set up within your main operating system. If more than one external fingerprint reader are connected to a computer, this error message will be displayed to inform you to remove all of the fingerprint keyboards except the one compatible with the fingerprint application on your computer. 1962 No operating system found. Press any key to repeat boot sequence. This error occurs only after the POST is completed. Press any key to repeat ..

ThinkCentre M73z Hardware Maintenance Manual - Page 68

Message/Symptom FRU/Action Incorrect memory size during POST 1. Run the Memory tests. 2. Memory Module 3. System Board "Insert a Diskette" icon appears with a known-good diagnostics diskette in the first 3.5-inch diskette drive. 1. System Board 2. Diskette Drive Cable 3. Network Adapter Intensity or color varies from left to right of characters and color bars 1. Display 2. Video adapter (if present) 3. System Board No power or fan not running 1. See “Hard disk drive boot error” on page 59. Non-system disk or disk error-type message with a known-good diagnostic diskette. 1. Diskette Dri..

Undetermined problems - Page 69

Message/Symptom FRU/Action Serial or parallel connector device failure (adapter connector) 1. External Device Self-Test OK? 2. External Device 3. Cable 4. Alternate Adapter 5. System Board Some or all keys on the keyboard do not work 1. Keyboard 2. Keyboard Cable 3. System Board Undetermined problems This section provides instructions on how to find out the failing devices or adapters. 1. Power-off the computer. 2. Remove or disconnect the following components (if installed) one at a time. a. External devices (modem, printer, or mouse) b. Any adapters c. Memory modules d. Extended video me..

ThinkCentre M73z Hardware Maintenance Manual - Page 70

64 ThinkCentre M73z Hardware Maintenance Manual

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Figure1. Frontconnector,control,andindicatorlocations - Page 71

Chapter 7. Locations This chapter introduces the locations of the computer hardware components. Locating connectors, controls, and indicators on the front of your computer Figure 1 “Front connector, control, and indicator locations” on page 65 shows the locations of the connectors, controls, and indicators on the front of your computer. Figure1. Frontconnector,control,andindicatorlocations 1 Integrated camera indicator 7 Internal speaker 2 Integrated camera block shield 8 Card reader 3 Integrated camera 9 USB 3.0 connector 4 Integrated Microphone 10 Headphone connector 5 Power indicator..

ThinkCentre M73z Hardware Maintenance Manual - Page 72

Connector Description Headphone connector Used to attach a headphone to your computer when you want to listen to music or other sounds without disturbing anyone. Microphone connector Used to attach a microphone to your computer when you want to record sound or if you use speech-recognition software. USB 3.0 connector Used to attach a device that requires a USB 2.0 or 3.0 connector, such as a keyboard, a mouse, a scanner, a printer, or a personal digital assistant (PDA). A USB 3.0 connector provides high transmission speeds to reduce the time that is required for data transmission. 66 ThinkC..

Locating connectors on the rear of your computer - Page 73

Locating connectors on the rear of your computer Figure 2 “Rear connector locations” on page 67 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 connect the cables on your computer. Figure2. Rearconnectorlocations 1 Power cord connector 7 Serial connector 2 PS/2 keyboard connector (optional) 8 Power button 3 PS/2 mouse connector (optional) 9 Brightness-down control 4 Ethernet connector 10 Brightness-up control 5 VGA-out connector 11 Security-lock slot 6 USB 2.0 connectors (4) 1..

ThinkCentre M73z Hardware Maintenance Manual - Page 74

Connector Description PS/2 mouse connector (optional) Used to attach a mouse, a trackball, or other pointing devices that use a PS/2 mouse connector. Serial connector Used to attach an external modem, a serial printer, or other devices that use a 9-pin serial connector. USB 2.0 connector Used to attach a device that requires a USB 2.0 connector, such as a USB keyboard, a USB mouse, a USB scanner, or a USB printer. If you have more than six USB devices, you can purchase a USB hub, which you can use to connect additional USB devices. VGA-out connector Used to attach a Video Graphics Array (VG..

Figure3. LocatingmajorFRUsandCRUs - Page 75

Figure3. LocatingmajorFRUsandCRUs Chapter 7 . Locations 69

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ThinkCentre M73z Hardware Maintenance Manual - Page 76

The following table lists the major FRUs shown in Figure 3 “Locating major FRUs and CRUs” on page 69 and identifies which FRUs are also self-service CRUs or optional-service CRUs. Notes: • Self-service CRUs: These CRUs unplug or are secured by no more than two screws. Examples of these types of CRUs include the keyboard, the mouse, any USB device, and the power cord. Other self-service CRUs depending on product design might include memory modules, adapter cards, hard disk drives, and optical drives. • Optional-service CRUs: These CRUs are isolated parts within the computer and are ..

Figure4. Locationsofthepartsandconnectorsonthesystemboard - Page 77

Looking up FRU information For detailed FRU information, such as the FRU part numbers and supported computer models, go to: http:/www.lenovo.com/serviceparts-lookup Locating parts on the system board Figure 4 “Locations of the parts and connectors on the system board” on page 71 shows the locations of the parts and connectors on the system board. Figure4. Locationsofthepartsandconnectorsonthesystemboard 1 LCD panel connector 12 Rear I/O assembly connector 2 Memory slots (2) 13 Serial connector 3 Integrated camera connector 14 SATA 3.0 connector (Hard disk drive signal connector) 4 Cover..

ThinkCentre M73z Hardware Maintenance Manual - Page 78

10 Internal speaker connector 21 Microprocessor fan connector 11 Card reader connector 22 Microprocessor 72 ThinkCentre M73z Hardware Maintenance Manual

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Removing and installing the computer stand - Page 79

Chapter 8. Replacing FRUs Important: Before you replace any FRU, be sure to read and understand Chapter 1 “Safety information” on page 1. These precautions and guidelines will help you work safely. FRU replacements are to be done only by trained service technicians. This chapter provides instructions about removing or replacing major FRUs. Not all FRUs are documented. Removing and installing the computer 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..

Removing and installing the full-function monitor stand - Page 80

3. Remove the rubber cushion, and then loosen the screw 1 that secures the frame stand. Lift the frame stand to remove it from the computer. Figure5. Removingtheframestand 4. To install the frame stand, position the frame stand over the computer so that the screw on the stand aligns with the corresponding hole in the computer cover. Figure6. Installingtheframestand 5. Tighten the screw to secure the frame stand, and then install the rubber cushion. Removing and installing the full-function monitor stand To remove and install the full-function monitor stand, do the following: 1. Remove all m..

Removing and installing the tilt-only monitor stand - Page 81

3. Remove the four rubber cushions, and then remove the four screws that secure the full-function monitor stand. Remove the full-function monitor stand from the computer. Figure7. Removingthefull-functionmonitorstand 4. To install the full-function monitor stand, position the full-function monitor stand over the computer so that the four screw holes in the stand align with the corresponding holes in the computer cover. Then, install the four screws and the four rubber cushions to secure the full-function monitor stand to the computer. Removing and installing the tilt-only monitor stand To r..

ThinkCentre M73z Hardware Maintenance Manual - Page 82

3. Remove the two screws 1 that secure the tilt-only monitor stand, and then remove the tilt-only monitor stand from the computer. Figure8. Removingthetilt-onlymonitorstand 4. To install the tilt-only monitor stand, place the tilt-only monitor stand on the computer so that the two plastic tabs 1 on the tilt-only monitor stand align with the corresponding holes in the computer. Install the two screws to secure the tilt-only monitor stand to the computer. Figure9. Installingthetilt-onlymonitorstand Removing the computer cover Attention: Do not open your computer or attempt any repair before r..

Removing and installing the U-shaped stand - Page 83

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 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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer stand. See ..

ThinkCentre M73z Hardware Maintenance Manual - Page 84

5. Remove the four screws that secure the U-shaped stand, and then pull the U-shaped stand out of the chassis. Figure11. RemovingtheU-shapedstand 6. To install the U-shaped stand, insert the U-shaped stand into the chassis so that the four screw holes in the stand align with the corresponding holes in the chassis. Figure12. InstallingtheU-shapedstand 78 ThinkCentre M73z Hardware Maintenance Manual

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Figure13. InstallingthefourscrewstosecuretheU-shapedstand - Page 85

7. Install the four screws to secure the U-shaped stand to the chassis. Figure13. InstallingthefourscrewstosecuretheU-shapedstand 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 118. Removing and installing the hard-disk-drive EMI shield 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 remove and install the har..

Figure14. Removingthehard-disk-driveEMIshield - Page 86

5. Pivot the hard-disk-drive EMI shield as shown to remove it from the hard-disk-drive bracket, and then lift the EMI shield out of the chassis. Figure14. Removingthehard-disk-driveEMIshield 80 ThinkCentre M73z Hardware Maintenance Manual

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Figure15. Installingthehard-disk-driveEMIshield - Page 87

6. To install the hard-disk-drive EMI shield, align the hole in the EMI shield with the standoff in the chassis as shown. Then, push the EMI shield straight down until it is secured by the standoff firmly and the three tabs 1 on the EMI shield also are secured by the corresponding holes in the chassis. Figure15. Installingthehard-disk-driveEMIshield 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 118. Replacing the 3.5-inch hard disk drive or hyb..

ThinkCentre M73z Hardware Maintenance Manual - Page 88

2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer stand. See “Removing and installing the computer stand” on page 73. 4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the hard-disk-drive EMI shield. See “Removing and installing the hard-disk-drive EMI shield” on page 79. 6. Disconnect the cable from the hard disk drive. 7. Remove the screw 1 , and then pivot the hard-disk-drive bracket..

Figure17. Removingtheharddiskdrivefromthebracket - Page 89

8. Remove the four screws that secure the hard disk drive to the bracket, and then remove the hard disk drive from the bracket. Do not touch the circuit board on the bottom of the hard disk drive. Figure17. Removingtheharddiskdrivefromthebracket 9. To install the new hard disk drive, position the new hard disk drive in the hard-disk-drive bracket so that the four screw holes in the hard disk drive align with the corresponding holes in the bracket. Then, install the four screws to secure the hard disk drive to the bracket. 10. Position the bracket with the new hard disk drive in the chassis ..

ThinkCentre M73z Hardware Maintenance Manual - Page 90

5. Remove the hard-disk-drive EMI shield. See “Removing and installing the hard-disk-drive EMI shield” on page 79. 6. Disconnect the cable from the solid-state drive. 7. Remove the screw 1 , and then pivot the hard-disk-drive bracket with the solid-state drive as shown to remove it from the chassis. Figure18. Removingthehard-disk-drivebracketwiththesolid-statedrive 8. Remove the three screws that secure the solid-state drive to the bracket, and then remove the solid-state drive from the bracket. Do not touch the circuit board on the bottom of the solid-state drive. Figure19. Removingthe..

Figure20. Removingtheopticaldrive - Page 91

11. Connect the solid-state drive cable to the new solid-state drive. 12. Install the hard-disk-drive EMI shield. See “Removing and installing the hard-disk-drive EMI shield” on page 79. 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 118. Replacing the optical 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..

ThinkCentre M73z Hardware Maintenance Manual - Page 92

6. To install a new optical drive, slide the new optical drive into the optical drive bay until the optical drive is seated in place and connected to the optical-drive cable. Figure21. Installingtheopticaldrive 7. Install the screw to secure the new optical drive to the chassis. Figure22. Installingthescrewtosecuretheopticaldrive 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 118. Replacing the converter board Attention: Do not open your computer..

Figure23. Removingthetwoscrewsthatsecuretheconverterboard - Page 93

This section provides instructions on how to replace the converter board. To replace the converter board, 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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer stand. See “Removing and installing the computer stand..

Removing and installing the system board shield - Page 94

Removing and installing the system board shield 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 remove and install the system board shield. To remove and install the system board shield, 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. Place a soft, clean towel or cloth on the d..

Replacing the rear I/O assembly - Page 95

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 118. Replacing the rear I/O 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 rear input/output (I/O) assembly. To replace the rear I/O assembly, do the following: 1. Remove all media from the drives and turn off all attached devices and the com..

ThinkCentre M73z Hardware Maintenance Manual - Page 96

7. Remove the power cord connector from the rear I/O assembly. Figure26. Removingthepowercordconnector 8. Disconnect the PS/2 keyboard/mouse cable and the serial-connector cable from the system board. Then, remove the rear I/O assembly from the chassis. 9. To install the new rear I/O assembly, connect the PS/2 keyboard/mouse cable and the serial-connector cable of the new rear I/O assembly to the system board. See “Locating parts on the system board” on page 71. 10. Note the orientation of the power cord connector and install it onto the new rear I/O assembly. Ensure that the two screw ..

Figure27. InstallingtherearI/Oassembly - Page 97

11. Position the new rear I/O assembly over the rear I/O assembly connector on the system board so that the notch on the rear I/O assembly aligns with the key in the connector. Then, insert the rear I/O assembly into the connector until it is seated firmly and the four screw holes 1 align with the corresponding holes in the chassis. Figure27. InstallingtherearI/Oassembly 12. Install the five screws to secure the rear I/O assembly to the chassis. Figure28. InstallingthefivescrewstosecuretherearI/Oassembly 13. Install the system board shield. See “Removing and installing the system board..

ThinkCentre M73z Hardware Maintenance Manual - Page 98

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 118. Replacing the internal speakers 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 internal speakers. To replace the internal speakers, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, di..

Removing and installing the VESA mount bracket - Page 99

9. To install the new internal speakers, position the new internal speakers in the chassis so that each speaker is secured by the corresponding two tabs on the front bezel. Figure30. Installingtheinternalspeakers 10. Route the cables of new internal speakers, and then connect the cables to the system board. See “Locating parts on the system board” on page 71. 11. Install the rear I/O assembly. See “Replacing the rear I/O assembly” on page 89. 12. Install the system board shield. See “Removing and installing the system board shield” on page 88. What to do next: • To work with a..

ThinkCentre M73z Hardware Maintenance Manual - Page 100

7. Remove the three screws 1 , and then lift the VESA mount bracket to remove it from the chassis. Figure31. RemovingtheVESAmountbracket 8. To install the VESA mount bracket, position the VESA mount bracket in the chassis so that the three screw holes in the VESA mount bracket align with the corresponding holes in the chassis. Then, install the three screws to secure the VESA mount bracket. 9. Install the rear I/O assembly. See “Replacing the rear I/O assembly” on page 89. 10. Install the system board shield. See “Removing and installing the system board shield” on page 88. What to ..

Figure32. Removingthepowersupplyassembly - Page 101

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 attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your comp..

ThinkCentre M73z Hardware Maintenance Manual - Page 102

12. Install the VESA mount bracket. See “Removing and installing the VESA mount bracket” on page 93. 13. Install the rear I/O assembly. See “Replacing the rear I/O assembly” on page 89. 14. Install the system board shield. See “Removing and installing the system board shield” on page 88. 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 118. Replacing the microprocessor fan Attention: Do not open your computer or attempt any repair befor..

Replacing the integrated camera - Page 103

10. To install the new microprocessor fan, position the new microprocessor fan in the chassis so that the two screw holes in the new microprocessor fan align with the corresponding holes in the chassis. Then, install the two screws to secure the microprocessor fan to the chassis. 11. Route the cable of the new microprocessor fan, and then connect the cable to the system board. See “Locating parts on the system board” on page 71. 12. Install the VESA mount bracket. See “Removing and installing the VESA mount bracket” on page 93. 13. Install the rear I/O assembly. See “Replacing the..

ThinkCentre M73z Hardware Maintenance Manual - Page 104

5. Remove the screw 1 , and then disconnect the integrated-camera cable from the camera. Then, remove the camera from the chassis. Figure34. Removingtheintegratedcamera 6. To install the new integrated camera, connect the integrated-camera cable to the new integrated camera. 98 ThinkCentre M73z Hardware Maintenance Manual

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Figure35. Installingtheintegratedcamera - Page 105

7. Position the integrated camera so that the camera is secured by the tab 2 and the screw hole in the camera aligns with the corresponding hole 1 . Install the screw to secure the integrated camera to the front bezel. Figure35. Installingtheintegratedcamera 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 118. Replacing the heat sink assembly Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 ..

ThinkCentre M73z Hardware Maintenance Manual - Page 106

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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer stand. See “Removing and installing the computer stand” on page 73. 4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the system board s..

Figure37. Installingtheheatsinkassembly - Page 107

Figure37. Installingtheheatsinkassembly 9. Install the system board shield. See “Removing and installing the system board shield” on page 88. 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 118. Replacing the microprocessor 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. CAUTION:..

Figure38. Openingtheretainertoaccessthemicroprocessor - Page 108

4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the system board shield. See “Removing and installing the system board shield” on page 88. 6. Remove the heat sink assembly. See “Replacing the heat sink assembly” on page 99. 7. Press the small handle 1 to open the retainer 2 to access the microprocessor 3 . Figure38. Openingtheretainertoaccessthemicroprocessor 102 ThinkCentre M73z Hardware Maintenance Manual

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Chapter 8 - Page 109

8. Lift the microprocessor straight up and out of the socket. Notes: a. Your microprocessor and socket might look different from the one illustrated. b. Note the orientation of the microprocessor in the socket. You can either look for the small triangle 1 on one corner of the microprocessor or note the orientation of the notches 2 on the microprocessor. This is important when installing a new microprocessor on the system board. Figure39. Notingtheorientationofthemicroprocessorinthesocket c. Touch only the sides of the microprocessor. Do not touch the gold contacts on the bottom. d. Do not d..

ThinkCentre M73z Hardware Maintenance Manual - Page 110

10. Hold the new microprocessor and align the notches 2 on it with the alignment keys in the microprocessor socket, or align the small triangle 1 on one corner of the new microprocessor with the corresponding beveled corner of the microprocessor socket. Figure41. Installingthemicroprocessor 11. Lower the new microprocessor straight down into the microprocessor socket on the system board. 12. Close the microprocessor retainer and lock it into position with the small handle to secure the new microprocessor in the socket. 13. Install the heat sink assembly. See “Replacing the heat sink assem..

Figure42. Removingamemorymodule - Page 111

3. Remove the computer stand. See “Removing and installing the computer stand” on page 73. 4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the system board shield. See “Removing and installing the system board shield” on page 88. 6. Depending on whether you are installing or replacing a memory module, do one of the following: • If you are installing a memory module, go to step 7. • If you are replacing a memory module, open the retaining clips and gently pull the memory module out of the memory slot. Figure42. Removingamemorymodule 7. Po..

ThinkCentre M73z Hardware Maintenance Manual - Page 112

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 118. 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. This section provides instructions on how to replace the battery. Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-port assignments (configuration). A batt..

Figure45. Installingthebattery - Page 113

7. Install a new battery as shown. Figure45. Installingthebattery 8. Install the system board shield. See “Removing and installing the system board shield” on page 88. 9. Install the computer cover. See “Completing the parts replacement” on page 118. 10. Install the computer stand. See “Removing and installing the computer stand” on page 73. 11. Connect the external cables and the power cord to the computer. 12. Turn on the computer and all attached devices. Note: When you turn on the computer for the first time after replacing the battery, an error message might be displayed. ..

ThinkCentre M73z Hardware Maintenance Manual - Page 114

7. Remove the two screws 1 , and then remove the card reader from the chassis. Figure46. Removingthecardreader 8. To install the new card reader, position the new card reader on the system board so that the two screw holes in the card reader align with the corresponding holes in the system board. Then, install the two screws to secure the card reader to the system board. 9. Connect the card-reader cable to the new card reader. 10. Install the system board shield. See “Removing and installing the system board shield” on page 88. What to do next: • To work with another piece of hardware..

Figure47. DisconnectingcablesandreleasingtheWi-Ficard - Page 115

6. Disconnect the two Wi-Fi antenna cables from the Wi-Fi card, and then remove the screw that secures the Wi-Fi card so that the Wi-Fi card pops up. Figure47. DisconnectingcablesandreleasingtheWi-Ficard 7. Remove the Wi-Fi card from the mini PCI express card slot as shown. Figure48. RemovingtheWi-Ficard Chapter 8 . Replacing FRUs 109

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ThinkCentre M73z Hardware Maintenance Manual - Page 116

8. To install the new Wi-Fi card, insert the notched end of the new Wi-Fi card into the mini PCI express card slot at an angle of about 20 degrees. Ensure that the Wi-Fi card is inserted firmly. Then, pivot the Wi-Fi card downward so that the screw hole in the Wi-Fi card aligns with the mounting stud on the system board. Figure49. InstallingtheWi-Ficard 110 ThinkCentre M73z Hardware Maintenance Manual

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Figure50. SecuringtheWi-Ficardandconnectingcables - Page 117

9. Install the screw to secure the Wi-Fi card to the system board, and then connect the two Wi-Fi antenna cables to the Wi-Fi card. Figure50. SecuringtheWi-Ficardandconnectingcables 10. Install the system board shield. See “Removing and installing the system board shield” on page 88. 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 118. Replacing the system board Attention: Do not open your computer or attempt any repair before reading and unde..

Figure51. Removingthesixscrewsthatsecurethesystemboard - Page 118

5. Remove the system board shield. See “Removing and installing the system board shield” on page 88. 6. Remove the rear I/O assembly. See “Replacing the rear I/O assembly” on page 89. 7. Remove the VESA mount bracket. See “Removing and installing the VESA mount bracket” on page 93. 8. Remove the heat sink assembly. See “Replacing the heat sink assembly” on page 99. 9. Remove the memory modules. See “Installing or replacing a memory module” on page 104. 10. Remove the card reader. See “Replacing the card reader” on page 107. 11. Remove the Wi-Fi card. See “Replacing..

Figure52. Installingthemicroprocessorsocketcover - Page 119

19. Install the memory modules. See “Installing or replacing a memory module” on page 104. 20. Install the heat sink assembly. See “Replacing the heat sink assembly” on page 99. 21. Install the VESA mount bracket. See “Removing and installing the VESA mount bracket” on page 93. 22. Install the rear I/O assembly. See “Replacing the rear I/O assembly” on page 89. 23. Install the system board shield. See “Removing and installing the system board shield” on page 88. 24. Install the computer cover. See “Completing the parts replacement” on page 118. 25. Install the comput..

Figure53. DisconnectingtheLCDpanelcablefromthesystemboard - Page 120

2. Place a soft, clean towel or cloth on the desk or other flat surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer stand. See “Removing and installing the computer stand” on page 73. 4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the U-shaped stand. See “Removing and installing the U-shaped stand” on page 77. 6. Remove the hard disk drive. See “Replacing the 3.5-inch hard disk drive or hybrid hard disk drive” on page 81 or “Repla..

Chapter 8 - Page 121

17. Remove the eight screws that secure the chassis with the LCD panel. Figure54. RemovingtheeightscrewsthatsecurethechassiswiththeLCDpanel Chapter 8 . Replacing FRUs 115

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ThinkCentre M73z Hardware Maintenance Manual - Page 122

18. Pivot the eight retaining clips outward as shown one by one, and then remove the chassis with the LCD panel from the front bezel. Figure55. RemovingthechassiswiththeLCDpanel 19. Remove the four screws that secure the LCD panel to the chassis. Figure56. RemovingthefourscrewsthatsecuretheLCDpanel 20. Lift the chassis a little bit upward to access the LCD-panel cable and the converter-board cable. Note the cable routing and disconnect the converter-board cable from the LCD panel. Then, remove the LCD panel from the chassis. 116 ThinkCentre M73z Hardware Maintenance Manual

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Figure57. ConnectingtheLCDpanelcabletothesystemboard - Page 123

21. To install the new LCD panel, position the chassis over the new LCD panel and correctly route the new LCD-panel cable and the converter-board cable. Then, connect the converter-board cable to the new LCD panel. 22. Align the four screw holes in the LCD panel with the corresponding holes in the chassis, and then install the four screws to secure the LCD panel to the chassis. 23. Position the chassis with the new LCD panel so that it is secured by the eight retaining clips on the front bezel. Then, install the eight screws to secure the chassis with the new LCD panel to the front bezel. 2..

ThinkCentre M73z Hardware Maintenance Manual - Page 124

Completing the parts replacement After completing the installation or replacement for all parts, you need to install the computer cover and connect cables. To install the computer cover and connect cables, do the following: 1. Ensure 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 68 for the locations of various components in your computer. 2. Ensure that the cables are routed correctly before installing the computer cover. Keep cables clear of the hinges and sides of the chas..

Chapter 9. - Page 125

Chapter 9. Additional service information This chapter provides additional information that the service representative might find helpful. Security features Security features in this section include the following: • Passwords • Vital Product Data Hardware controlled passwords Hardware controlled passwords are set using the Setup Utility program. For more information about passwords, see “Using passwords” on page 53. Operating system password An operating system password is very similar to a power-on password and denies access to the computer by an unauthorized user when the passwor..

ThinkCentre M73z Hardware Maintenance Manual - Page 126

Updating the BIOS When you install a new program, hardware device, or device driver, you might be informed to update the BIOS. You can update the BIOS from your operating system or a flash update disc (supported only on some models). To update the BIOS, do the following: 1. Go to http://www.lenovo.com/drivers. 2. Download the flash BIOS update driver for the operating system version or the ISO image version (used to create a flash update disc). Then, download the installation instructions for the flash BIOS update driver you download. 3. Print the installation instructions you download ..

Advanced configuration and power interface (ACPI) BIOS - Page 127

Advanced configuration and power interface (ACPI) BIOS Being an ACPI BIOS system, the operating system is allowed to control the power management features of the computer and the setting for Advanced Power Management (APM) BIOS mode is ignored. Not all operating systems support ACPI BIOS mode. Automatic Power-on features The Automatic Power-On features within the Power Management menu allow you to enable and disable features that turn on the computer automatically. • Wake Up on Alarm : You can specify a date and time at which the computer will be turned on automatically. This can be eith..

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Appendix A. - Page 129

Appendix A. Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's responsibility to evaluate and verif..

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Television output notice The following notice applies to models that have the factory-installed television-output feature. This product incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited. Eu..

Index - Page 131

Index 2.5-inch hybrid hard disk drive replacing 83 2.5-inch solid-state drive replacing 83 3.5-inch hard disk drive replacing 81 3.5-inch hybrid hard disk drive replacing 81 A administrator, password 54 B basic troubleshooting 35 battery replacing 106 BIOS settings, changing 57 boot-block recovery 120 C card reader replacing 107 changing password 54 startup device sequence 56 cleaning an optical mouse 42 CMOS, clearing 54 components, internal 68 computer cover installing 118 removing 76 computer stand installing 73 removing 73 connector 66–67 connectors rear 67 connectors, controls, indic..

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M memory module installing 104 replacing 104 microphone connector 66 microprocessor replacing 101 microprocessor fan replacing 96 microprocessor socket cover installing 111 mouse connector 68 N notice, television output 124 notices 123 O optical drive replacing 85 optical mouse cleaning 42 Optional-service CRUs 68 P part numbers iii, 65, 71 parts replacement, completing 118 password administrator 54 considerations 54 power-on password 54 setting, changing, deleting 54 passwords erasing 54 lost or forgotten 54 passwords, using 53 physical specifications 27 power supply assembly replacing 94..

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U U-shaped stand installing 77 removing 77 USB 2.0 connector 68 USB 3.0 connector 66 using passwords 53 Setup Utility 53 V VESA mount bracket installing 93 removing 93 VGA-out connector 68 viewing and changing settings 53 W Wi-Fi card replacing 108 © Copyright Lenovo 2013, 2015 127

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