Lenovo H520g Desktop- Manuals

Chapter 1. About this manual This manual provides service and reference information for Lenovo ® computers listed on the front cover. This manual is intended only for trained service personnel who are familiar with Lenovo computer products. Before servicing a Lenovo computer product, be sure to read...

Chapter 2. Safety information This chapter contains the safety information that you need to be familiar with before servicing a computer. General safety Follow these rules to ensure general safety: • Observe good housekeeping in the area of the machines during and after maintenance. • When lifting a...

Voltage-selection switch Some computers are equipped with a voltage-selection switch located near the power-cord connectionpoint on the computer. If your computer has a voltage-selection switch, ensure that you set the switch tomatch the voltage available at your electrical outlet. Setting the volta...

• French • German • Hebrew • Italian • Korean • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: • Do not connect or disconnect any cables or perform installation, maintenance, or reconfigurationof this product during an electric...

≥18 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. 10 Lenovo H520gHardware Maintenance Manual

• 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. ...

DANGER Le courant électrique provenant de l'alimentation, du téléphone et des câbles de transmission peut présenterun 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 cou...

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 Schutzkontaktstec...

• 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 mitLichtwellenleitertechnik oder Sendern) Folgendes beachten: • Die Abdeckungen n...

PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può esserepericolosa. Per evitare il rischio di scosse elettriche: • Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o lariconfigurazione del prodotto du...

• 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 losmódems conectados antes de abrir las cubiertas de los dispositivos, a menos que se indique locontrario en los procedimien...

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

Chapter 3. General information This chapter provides general information that applies to all machine types supported by this manual. Specifications This section lists the physical specifications for your computer. Dimensions Width: 160 mm (6.3 inches) Height: 375.3 mm (14.78 inches) Depth: 422.5 mm ...

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 • Produc...

Chapter 4. General checkout Attention The drives in the computer you are servicing might have been rearranged or the drive startup sequence mighthave been changed. Be extremely careful during write operations such as copying, saving, or formatting.Data or programs can be overwritten if you select an...

Chapter 5. Troubleshooting and diagnostics This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem isnot described here, see “Lenovo Support Web site” on page 30 for additional troubleshooting resources. Basic troubleshooting The following table provides i...

Symptom Action The operating system does notstart. 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 multipletimes b...

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 grounded, functional ac electrical outlet. • If your ext...

• If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30. CD problems Select your symptom from the following list: • “An audio disc or AutoPlay-ena...

DVD problems Select your symptom from the following list: • “Black screen instead of DVD video” on page 38 • “DVD movie will not play” on page 38 • “No audio or intermittent audio while playing DVD movie” on page 38 • “Playback is very slow or choppy” on page 38 • “Invalid disc or no disc found mess...

• Ensure that video resolution is set to less than 1152 x 864. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” onpage 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30. Invalid disc or no disc found...

"No Operating System Found" message or the system not starting from the correcthard 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 connec...

Monitor problems Note: Many monitors have status-indicator lights and built-in controls for adjusting brightness, contrast, width, height, and other picture adjustments. However, the controls vary from monitor type to monitor type.For information about the status lights and using the controls, refer...

• 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. Ch...

The Wake on LAN feature is not working Symptom: The Wake on LAN (WOL) feature is not working. Actions: • Make sure that WOL is enabled in the BIOS Setup Utility program. • If it is, check with your LAN administrator for the necessary settings. If your computer is a Gigabit Ethernet model and you use...

Bluetooth problems For Bluetooth problems, select your symptom from the following list: • “Sound does not come from the Bluetooth headphone” on page 46 • “PIM items sent from the Windows 7 operating system cannot be received correctly” on page 46 Sound does not come from the Bluetooth headphone Symp...

If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” onpage 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30. An option that previously worked does not work now Symptom: An option that previously worked...

4. A list of unnecessary file categories is displayed. Select each file category you want to delete, and then click OK . • Procedure 2 1. Open Control Panel. 2. Click Programs . 3. Click Turn Windows features on or off . 4. A list of optional Windows components is displayed. Follow the instructions ...

Insufficient memory Symptom: Insufficient memory In general, the more memory that is installed, the better the Windows operating system runs. Action: Install additional memory. For information about purchasing memory, see “Lenovo Support Website” on page 30. For step-by-step instructions on installi...

Software problems Select your symptom from the following list: • “When using a sort feature, dates do not sort in the correct order” on page 50 • “Software does not work as expected” on page 50 When using a sort feature, dates do not sort in the correct order Symptom: When using a sort feature, date...

USB problems Symptom: The USB connectors cannot be accessed. Actions: • Make sure the USB cable is securely connected to the USB connector and to the USB device. If the USB device has its own power cord, make sure it is attached to a properly grounded electrical outlet. • If the USB device has its o...

Chapter 6. Using the Setup Utility program The Setup Utility program is used to view and change the configuration settings of your computer, regardlessof which operating system you are using. However, the operating system settings might override any similarsettings in the Setup Utility program. Star...

Password considerations A password can be any combination of up to 64 alphabetic and numeric characters. For security reasons, itis 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 lengt...

Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more information, see “Password considerations” on page 54. Erasing lost or forgotten passwords (clearing CMOS) This section provides instructions on how to erase lost or forgotten passwords, such as a user pa...

2. From the Setup Utility program main menu, select Power ➙ After Power Loss , and press Enter. 3. Select Power On and press Enter. 4. Press F10 to save changes and exit the Setup Utility program. Press Enter when prompted to confirm the exit. Changing the BIOS settings before installing a new opera...

Chapter 7. 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 the Chapter 4 “General checkout” on page 31. You can use this index to help you decidewhich FRUs are needed when servicing a computer. If you are...

The following tables describes beep symptoms. Beep Symptom FRU/Action 2 short beeps CMOS setting error Perform the following actions in order. 1. Start the Setup Utility program and press F10 to Save and exit. See Chapter 6 “Using the Setup Utilityprogram” on page 53. 2. Start the Setup Utility prog...

Miscellaneous error messages Message/Symptom FRU/Action Changing display colors Display/Monitor Computer will not power-off. See “Hard disk drive boot error” on page 59. 1. Power Switch 2. System Board 3. Riser card, if installed Computer will not RPL from server 1. Ensure that network is in startup...

Message/Symptom FRU/Action Non-system disk or disk error-type message with aknown-good diagnostic diskette. 1. Diskette Drive 2. System Board 3. Diskette Drive Cable Other display symptoms not listed above (including blankor illegible display) 1. Display 2. System Board Power-on indicator or hard di...

Chapter 8. Locations This chapter introduces the locations of the computer hardware components. Locations This section provides information to help you locate your computer connectors, components, parts onthe system board, and internal drives. Note: The components in your computer might look slightl...

Locating connectors on the rear of your computer Figure 2 “Rear connector locations” on page 66 shows the locations of the connectors on the rear of yourcomputer. Some connectors on the rear of your computer are color-coded to help you determine where toconnect the cables on your computer. Figure 2....

Locating parts on the system board Figure 4 “System board part locations” on page 68 shows the locations of the parts on the system board. Figure 4. System board part locations 1 4-pin power connector 12 Clear CMOS (Complementary Metal Oxide Semiconductor) /Recovery jumper 2 Microprocessor 13 Front ...

Locating internal drives Internal drives are devices that your computer uses to read and store data. You can add drives to yourcomputer to increase storage capacity and enable your computer to read other types of media. Internaldrives are installed in bays. In this manual, the bays are referred to a...

Chapter 9. Replacing FRUs Important: Be sure to read and understand Chapter 2 “Safety information” on page 3 before you replace any FRU. These precautions and guidelines will help you work safely. FRU replacements are to be done only by trained service technicians. This chapter does not contain the ...

Removing the computer cover Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information”in the User Guide . To obtain a copy of the User Guide , go to: http://www.lenovo.com/ThinkCentreUserGuides This section provides instructions on ...

Removing and reinstalling the front bezel Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information”in the User Guide . To obtain a copy of the User Guide , go to: http://www.lenovo.com/ThinkCentreUserGuides This section provides in...

4. To reinstall the front bezel, align the three plastic tabs on the right side of the front bezel with the corresponding holes in the chassis, then pivot the front bezel inwards until it snaps into position onthe left side. Figure 8. Reinstalling the front bezel 5. To complete the installation or r...

Figure 11. Installing a PCI card 8. Reinstall the screw to secure the PCI card latch in place. 9. To complete the installation or replacement, go to “Completing the parts replacement” on page 93. Replacing the battery Attention: Do not open your computer or attempt any repair before reading and unde...

4. Remove the old battery. Figure 12. Removing the old battery 5. Install a new battery. Figure 13. Installing a new battery 6. Reinstall the computer cover and connect the cables. See “Completing the parts replacement” on page 93. Note: When the computer is turned on for the first time after replac...

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 memoryslots. See “Installing or replacing a PCI card” on page 74. 6. Depending on whether you are installing o...

7. Position the new memory module over the memory slot. Make sure that the notch 1 on the memory module aligns correctly with the slot key 2 on the system board. Push the memory module straight down into the slot until the retaining clips close. Figure 16. Installing a memory module 8. Reinstall the...

6. Connect one end of the signal cable to the rear of the new optical drive and the other end to an available SATA connector on the system board. See “Locating parts on the system board” on page 68. Then,locate an available five-wire power connector and connect it to the rear of the new optical driv...

Replacing the power supply assembly Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information”in the User Guide . To obtain a copy of the User Guide , go to: http://www.lenovo.com/ThinkCentreUserGuides This section provides instruct...

5. Slide the power supply assembly to the front of the computer and then lift it out of the chassis. 6. Make sure that the new power supply assembly is the correct replacement. Some power supply assemblies automatically sense the voltage, some power supply assemblies are voltage specific, andsome po...

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 the new microprocessor on the system board. c. Touch only th...

Replacing the system board Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information”in the User Guide . To obtain a copy of the User Guide , go to: http://www.lenovo.com/ThinkCentreUserGuides This section provides instructions on h...

7. Remove the six screws that secure the system board. Figure 25. Removing the six screws that secure the system board 8. Carefully slide the system board so that it can be released from the mounting studs that secure the system board in place. 9. Lift the system board out of the chassis. 10. Remove...

1. Release the lever securing the microprocessor retainer and open the retainer to access the microprocessor. 2. Grasp the microprocessor on the sides and lift it straight up and out of the socket. Do not touch the contacts on the microprocessor socket. 3. Lower the microprocessor retainer, and then...

Figure 29. Connecting a SATA hard disk drive 8. To complete the installation or replacement, go to “Completing the parts replacement” on page 93. Replacing the front audio and USB assembly Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safe...

6. Remove the screw that secures the front audio and USB assembly bracket to the chassis to remove the bracket from the chassis. Figure 30. Removing the front audio and USB assembly 7. Install the new front audio and USB assembly into the chassis and align the screw hole in the bracket with the corr...

4. 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 cover to the front of the computer until it snapsinto position. Figure 31. Reinstalling the computer cover 5. If there is a padlock available, loc...

Chapter 10. FRU lists This chapter lists the information on the field replaceable units (FRUs) for Lenovo desktop computer. Attention: Be sure to read and understand all the safety information before replacing any FRUs. Notes: FRUs that have a 1 or 2 in the CRU column are Customer Replaceable Units ...

Chapter 11. 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 Use the Setup Utility ...

Updating (flashing) the BIOS from your operating system Note: Because Lenovo makes constant improvements to its Web sites, the Web page contents are subject to change without notice, including the contents referenced in the following procedure. To update (flash) the BIOS from your operating system, ...

14. Turn on the computer to restart the operating system. Power management Power management reduces the power consumption of certain components of the computer such as thesystem power supply, processor, hard disk drives, and some monitors. Advanced Configuration and Power Interface (ACPI) BIOS Being...

Index A Administrator, password 54 B basic troubleshooting 33 battery, replacing 77 BIOS settings, changing 57 Boot-block Recovery 101 C changing password 54 startup device sequence 56 CMOS, clearing 55 components, internal 66 computer cover removing 72 computer cover, reinstalling 93 connectors rea...