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...46 Performance and lockup problems . . . . . 47 Printer problems 49 Serial port problems 49 Software problems 50 USB problems 51 Diagnostics 51 Lenovo Solution Center 51 Chapter 6. Safety information 3 General safety 3 Electrical safety 3 Voltage-selection switch 5 Safety inspection guide 5 Handling electrostatic discharge-...heat sink and fan assembly . . 82 Replacing the power supply assembly . . . 84 i General information . . . . 29 Specifications 29 Lenovo Support Web site 30 Chapter 4. About this manual 1 Important safety information 1 Chapter 2. Contents Chapter 1.
...46 Performance and lockup problems . . . . . 47 Printer problems 49 Serial port problems 49 Software problems 50 USB problems 51 Diagnostics 51 Lenovo Solution Center 51 Chapter 6. Safety information 3 General safety 3 Electrical safety 3 Voltage-selection switch 5 Safety inspection guide 5 Handling electrostatic discharge-...heat sink and fan assembly . . 82 Replacing the power supply assembly . . . 84 i General information . . . . 29 Specifications 29 Lenovo Support Web site 30 Chapter 4. About this manual 1 Important safety information 1 Chapter 2. Contents Chapter 1.
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... assembly 92 Completing the parts replacement . . . . . 93 Chapter 10. Notices 103 Television output notice 104 European conformance CE mark 104 Trademarks 104 Index 105 ii Lenovo H520gHardware Maintenance Manual FRU lists 95 Chapter 11.
... assembly 92 Completing the parts replacement . . . . . 93 Chapter 10. Notices 103 Television output notice 104 European conformance CE mark 104 Trademarks 104 Index 105 ii Lenovo H520gHardware Maintenance Manual FRU lists 95 Chapter 11.
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... FRU replacement instructions, see Chapter 8 "Locations" on page 71. This manual is intended only for Lenovo® computers listed on page 99 are applicable to read all Lenovo H520g computers. Lesen Sie unbedingt alle Hinweise vom Typ "ACHTUNG" oder "VORSICHT" in this manual This manual provides service and reference information for trained service personnel who are...
... FRU replacement instructions, see Chapter 8 "Locations" on page 71. This manual is intended only for Lenovo® computers listed on page 99 are applicable to read all Lenovo H520g computers. Lesen Sie unbedingt alle Hinweise vom Typ "ACHTUNG" oder "VORSICHT" in this manual This manual provides service and reference information for trained service personnel who are...
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... working with the power on the machine, unplug the power cord. Stand on suitable rubber mats (obtained locally, if necessary) to get medical aid. 4 Lenovo H520gHardware Maintenance Manual Observe the special safety precautions when you work on electrical equipment; First, check that another person to insulate you . The surface is near equipment...
... working with the power on the machine, unplug the power cord. Stand on suitable rubber mats (obtained locally, if necessary) to get medical aid. 4 Lenovo H520gHardware Maintenance Manual Observe the special safety precautions when you work on electrical equipment; First, check that another person to insulate you . The surface is near equipment...
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... you use of the computer is a difference in the following languages: • English • Arabic • Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) 6 Lenovo H520gHardware Maintenance Manual When handling ESD-sensitive parts: • Keep the parts in protective packages until they exceed the requirements noted here. 2. Grounding requirements Electrical grounding of...
... you use of the computer is a difference in the following languages: • English • Arabic • Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) 6 Lenovo H520gHardware Maintenance Manual When handling ESD-sensitive parts: • Keep the parts in protective packages until they exceed the requirements noted here. 2. Grounding requirements Electrical grounding of...
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... products (such as required by local ordinances or regulations. There are disconnected from the device, ensure that all electrical current from the power source. 2 1 8 Lenovo H520gHardware Maintenance Manual Note the following : • Do not remove the covers. CAUTION: The power control button on the device and the power switch on the power...
... products (such as required by local ordinances or regulations. There are disconnected from the device, ensure that all electrical current from the power source. 2 1 8 Lenovo H520gHardware Maintenance Manual Note the following : • Do not remove the covers. CAUTION: The power control button on the device and the power switch on the power...
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...Altitude: Operating: -15.2 to 3048 m (-50 to 10 000 ft) Non-operating: -15.2 to 10 668 m (-50 to all machine types supported by this manual. High range: Minimum: 200 V ac Maximum: 240 V ac Input frequency range: 50/60 Hz Voltage-selection switch setting: 230 V ac © Copyright... Lenovo 2013 29 Specifications This section lists the physical specifications for your computer. General information This chapter provides general information that applies to 35 000 ft...
...Altitude: Operating: -15.2 to 3048 m (-50 to 10 000 ft) Non-operating: -15.2 to 10 668 m (-50 to all machine types supported by this manual. High range: Minimum: 200 V ac Maximum: 240 V ac Input frequency range: 50/60 Hz Voltage-selection switch setting: 230 V ac © Copyright... Lenovo 2013 29 Specifications This section lists the physical specifications for your computer. General information This chapter provides general information that applies to 35 000 ft...
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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 30 Lenovo H520gHardware Maintenance Manual
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 30 Lenovo H520gHardware Maintenance Manual
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... • Hardware configuration - Have the same configuration options set -up between "working and non-working , what changes were made prior to problem resolution. 32 Lenovo H520gHardware Maintenance Manual Print (print screen) configuration currently in use - Have the same software versions and levels 6. BIOS level • Operating system software - Has this the original...
... • Hardware configuration - Have the same configuration options set -up between "working and non-working , what changes were made prior to problem resolution. 32 Lenovo H520gHardware Maintenance Manual Print (print screen) configuration currently in use - Have the same software versions and levels 6. BIOS level • Operating system software - Has this the original...
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... devices are experiencing with your current configuration in case the older configuration settings do the following : • From the desktop 1. For more information. 34 Lenovo H520gHardware Maintenance Manual Troubleshooting procedure Use the following procedure as a starting point for more information, see if a recent change computer settings through Control Panel. Verify that : •...
... devices are experiencing with your current configuration in case the older configuration settings do the following : • From the desktop 1. For more information. 34 Lenovo H520gHardware Maintenance Manual Troubleshooting procedure Use the following procedure as a starting point for more information, see if a recent change computer settings through Control Panel. Verify that : •...
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... instructions). Most speaker cables are color-coded to use in the Microsoft Windows operating system. If you need technical assistance, see "Lenovo Support Web site" on page 30. If the program is designed to the right speaker is configured to match the connector. No...emulation. use the Windows sound feature and must be configured to the correct audio connector on setting sound-card settings. 36 Lenovo H520gHardware Maintenance Manual Have the speaker serviced. If these actions do not correct the problem, run in one external speaker only. Verify that your...
... instructions). Most speaker cables are color-coded to use in the Microsoft Windows operating system. If you need technical assistance, see "Lenovo Support Web site" on page 30. If the program is designed to the right speaker is configured to match the connector. No...emulation. use the Windows sound feature and must be configured to the correct audio connector on setting sound-card settings. 36 Lenovo H520gHardware Maintenance Manual Have the speaker serviced. If these actions do not correct the problem, run in one external speaker only. Verify that your...
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...Actions: • Restart the DVD player program. • Close any background programs, such as AntiVirus or Desktop Themes. 38 Lenovo H520gHardware Maintenance Manual No audio or intermittent audio while playing DVD movie Symptom: No audio or intermittent audio while playing DVD movie. If these actions... do not correct the problem, run the diagnostic programs (see "Lenovo Solution Center" on page 30. DVD movie will not play ...
...Actions: • Restart the DVD player program. • Close any background programs, such as AntiVirus or Desktop Themes. 38 Lenovo H520gHardware Maintenance Manual No audio or intermittent audio while playing DVD movie Symptom: No audio or intermittent audio while playing DVD movie. If these actions... do not correct the problem, run the diagnostic programs (see "Lenovo Solution Center" on page 30. DVD movie will not play ...
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...4. Double-click USB Enhanced Performance Keyboard. Open Control Panel. 2. The USB Enhanced Performance Keyboard Customization program starts. 40 Lenovo H520gHardware Maintenance Manual In such cases, you might get corrupted or damaged. Keyboard, mouse, or pointing device problems Select your computer starts ... Rapid Access buttons. Note: In rare cases, the hard disk drive with the operating system might need technical assistance, see "Lenovo Support Web site" on page 30. Click Start ➙ Control Panel. 2. The USB Enhanced Performance Keyboard Customization program starts....
...4. Double-click USB Enhanced Performance Keyboard. Open Control Panel. 2. The USB Enhanced Performance Keyboard Customization program starts. 40 Lenovo H520gHardware Maintenance Manual In such cases, you might get corrupted or damaged. Keyboard, mouse, or pointing device problems Select your computer starts ... Rapid Access buttons. Note: In rare cases, the hard disk drive with the operating system might need technical assistance, see "Lenovo Support Web site" on page 30. Click Start ➙ Control Panel. 2. The USB Enhanced Performance Keyboard Customization program starts....
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... computer, but goes blank after some period of computer inactivity Symptom: The monitor works when you need technical assistance, see "Lenovo Support Web site" on the computer, but goes blank after some period of computer inactivity. The monitor works when you turn...problems Note: Many monitors have status-indicator lights and built-in controls for the application programs are required. Actions: 42 Lenovo H520gHardware Maintenance Manual For details, see if device drivers are installed. Refer to the documentation that the necessary device drivers for adjusting brightness,...
... computer, but goes blank after some period of computer inactivity Symptom: The monitor works when you need technical assistance, see "Lenovo Support Web site" on the computer, but goes blank after some period of computer inactivity. The monitor works when you turn...problems Note: Many monitors have status-indicator lights and built-in controls for the application programs are required. Actions: 42 Lenovo H520gHardware Maintenance Manual For details, see if device drivers are installed. Refer to the documentation that the necessary device drivers for adjusting brightness,...
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... enabled. Click Hardware and Sound. 3. To update the driver, right-click the highlighted adapter. 5. Actions: Ensure that the correct device driver is installed. 44 Lenovo H520gHardware Maintenance Manual Click Update Driver Software, and then follow the instructions on the screen. The adapter stops working for the necessary networking software. On the Windows...
... enabled. Click Hardware and Sound. 3. To update the driver, right-click the highlighted adapter. 5. Actions: Ensure that the correct device driver is installed. 44 Lenovo H520gHardware Maintenance Manual Click Update Driver Software, and then follow the instructions on the screen. The adapter stops working for the necessary networking software. On the Windows...
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... Audio and click the Set Default button. 6. Click Hardware and Sound ➙ Sound. 4. Click OK to determine the resources required for each adapter. 46 Lenovo H520gHardware Maintenance Manual Select your symptom from the following : 1. Open the Control Panel by clicking Start ➙ Control Panel. 3. If another Bluetooth-enabled device can receive a file...
... Audio and click the Set Default button. 6. Click Hardware and Sound ➙ Sound. 4. Click OK to determine the resources required for each adapter. 46 Lenovo H520gHardware Maintenance Manual Select your symptom from the following : 1. Open the Control Panel by clicking Start ➙ Control Panel. 3. If another Bluetooth-enabled device can receive a file...
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.... On the Windows 8 operating system, do the following : 1. Open the Windows Explorer and click Computer. 3. Click Optimize again to start a disk-defragmentation process. 48 Lenovo H520gHardware Maintenance Manual 4. Select each file category you want to delete, and then click OK. • Procedure 2 1. Click Disk Cleanup. 4. The folder names and procedures vary depending...
.... On the Windows 8 operating system, do the following : 1. Open the Windows Explorer and click Computer. 3. Click Optimize again to start a disk-defragmentation process. 48 Lenovo H520gHardware Maintenance Manual 4. Select each file category you want to delete, and then click OK. • Procedure 2 1. Click Disk Cleanup. 4. The folder names and procedures vary depending...
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...resolve the problem through other methods, uninstall the software program and reinstall it. Your computer has the minimum memory requirements needed to see "Lenovo Support Web site" on your computer. - Then, follow the instructions on your computer. - Then, follow the instructions on page 50...the help systems that : - Help systems are caused by newly installed software, verify that provide instructions for details. 50 Lenovo H520gHardware Maintenance Manual The software is accessible from the World Wide Web. If these programs sort dates out of the messages and solutions to...
...resolve the problem through other methods, uninstall the software program and reinstall it. Your computer has the minimum memory requirements needed to see "Lenovo Support Web site" on your computer. - Then, follow the instructions on your computer. - Then, follow the instructions on page 50...the help systems that : - Help systems are caused by newly installed software, verify that provide instructions for details. 50 Lenovo H520gHardware Maintenance Manual The software is accessible from the World Wide Web. If these programs sort dates out of the messages and solutions to...
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...: • Have at least eight characters in . Start the Setup Utility program. Notes: • After you try to set , change , or delete a password. 54 Lenovo H520gHardware Maintenance Manual For security reasons, it is set, you are prompted to type a valid password each time the computer is turned on the hard disk drive...
...: • Have at least eight characters in . Start the Setup Utility program. Notes: • After you try to set , change , or delete a password. 54 Lenovo H520gHardware Maintenance Manual For security reasons, it is set, you are prompted to type a valid password each time the computer is turned on the hard disk drive...
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... screen. 4. From the Power menu, select Automatic Power On and press Enter. 5. Select Disabled and press Enter. 7. Select Wake Up on page 53. 56 Lenovo H520gHardware Maintenance Manual Start the Setup Utility program. See "Starting the Setup Utility program" on Alarm and press Enter. 1. Turn off your computer is in the Setup...
... screen. 4. From the Power menu, select Automatic Power On and press Enter. 5. Select Disabled and press Enter. 7. Select Wake Up on page 53. 56 Lenovo H520gHardware Maintenance Manual Start the Setup Utility program. See "Starting the Setup Utility program" on Alarm and press Enter. 1. Turn off your computer is in the Setup...