Lenovo H520g Hardware Maintenance Manual
Page 3
... Chapter 1. Locations 65 Locations 65 Locating connectors, controls, and indicators on the front of your computer 65 Locating connectors on the rear of your computer 66 Locating major FRUs and CRUs 66 Locating parts on the Windows 8 operating system 34 Troubleshooting...problems 49 Serial port problems 49 Software problems 50 USB problems 51 Diagnostics 51 Lenovo Solution Center 51 Chapter 6. Replacing FRUs 71 Handling static-sensitive devices 71 Installing or replacing hardware 71 Removing the computer cover 72 Removing and reinstalling the front bezel . . 73 Installing or ...
... Chapter 1. Locations 65 Locations 65 Locating connectors, controls, and indicators on the front of your computer 65 Locating connectors on the rear of your computer 66 Locating major FRUs and CRUs 66 Locating parts on the Windows 8 operating system 34 Troubleshooting...problems 49 Serial port problems 49 Software problems 50 USB problems 51 Diagnostics 51 Lenovo Solution Center 51 Chapter 6. Replacing FRUs 71 Handling static-sensitive devices 71 Installing or replacing hardware 71 Removing the computer cover 72 Removing and reinstalling the front bezel . . 73 Installing or ...
Lenovo H520g Hardware Maintenance Manual
Page 5
...FRUs" on page 71. These chapters are applicable to read Chapter 2 "Safety information" on page 99 are familiar with Lenovo computer products. Chapter 7 "Symptom-to-FRU index" on page 59 and Chapter 11 "Additional service information" on page 3. Chapter 1....Lenovo 2013 1 Before servicing a Lenovo computer product, be sure to any of the instructions. 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 not specific to read all Lenovo H520g computers...
...FRUs" on page 71. These chapters are applicable to read Chapter 2 "Safety information" on page 99 are familiar with Lenovo computer products. Chapter 7 "Symptom-to-FRU index" on page 59 and Chapter 11 "Additional service information" on page 3. Chapter 1....Lenovo 2013 1 Before servicing a Lenovo computer product, be sure to any of the instructions. 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 not specific to read all Lenovo H520g computers...
Lenovo H520g Hardware Maintenance Manual
Page 7
... that your sleeves are : hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working on electrical equipment. © Copyright Lenovo 2013 3 Replace any safety device that is long, fasten it with a nonconductive clip, approximately 8 centimeters (3 inches) from walk areas so ...safety Follow these rules to lift. 4. Never move suddenly or twist when you are fastened or rolled up with before servicing a computer. Remember: Metal objects are good electrical conductors. • Wear safety glasses when you attempt to ensure general safety: • ...
... that your sleeves are : hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working on electrical equipment. © Copyright Lenovo 2013 3 Replace any safety device that is long, fasten it with a nonconductive clip, approximately 8 centimeters (3 inches) from walk areas so ...safety Follow these rules to lift. 4. Never move suddenly or twist when you are fastened or rolled up with before servicing a computer. Remember: Metal objects are good electrical conductors. • Wear safety glasses when you attempt to ensure general safety: • ...
Lenovo H520g Hardware Maintenance Manual
Page 9
...unsafe conditions on these conditions and the safety hazards they present: • Electrical hazards, especially primary power (primary voltage on the computer. Consider these products. Checklist: 1. Use a meter to assist you must not be and whether you are not sure of this...cover. c. This guide addresses only those items. However, good judgment should be used to identify potential safety hazards due to the computer. Setting the voltage-selection switch incorrectly can cause serious or fatal electrical shock). • Explosive hazards, such as a damaged CRT...
...unsafe conditions on these conditions and the safety hazards they present: • Electrical hazards, especially primary power (primary voltage on the computer. Consider these products. Checklist: 1. Use a meter to assist you must not be and whether you are not sure of this...cover. c. This guide addresses only those items. However, good judgment should be used to identify potential safety hazards due to the computer. Setting the voltage-selection switch incorrectly can cause serious or fatal electrical shock). • Explosive hazards, such as a damaged CRT...
Lenovo H520g Hardware Maintenance Manual
Page 10
...-operated system. Grounding requirements Electrical grounding of fire or smoke damage. 7. Handling electrostatic discharge-sensitive devices Any computer part containing transistors or integrated circuits (ICs) should be verified by equalizing the charge so that the power-...• Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) 6 Lenovo H520gHardware Maintenance Manual Use an ESD common ground or reference point when working on ac-operated computers. Proper grounding of a grounded work mat to protect against your skin to electrostatic ...
...-operated system. Grounding requirements Electrical grounding of fire or smoke damage. 7. Handling electrostatic discharge-sensitive devices Any computer part containing transistors or integrated circuits (ICs) should be verified by equalizing the charge so that the power-...• Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) 6 Lenovo H520gHardware Maintenance Manual Use an ESD common ground or reference point when working on ac-operated computers. Proper grounding of a grounded work mat to protect against your skin to electrostatic ...
Lenovo H520g Hardware Maintenance Manual
Page 33
...: 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. Dimensions Width: 160 mm (6.3 inches) Height: 375.3 mm (14.78 inches) Depth: 422.5 mm (16.63 inches) Weight Maximum...
...: 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. Dimensions Width: 160 mm (6.3 inches) Height: 375.3 mm (14.78 inches) Depth: 422.5 mm (16.63 inches) Weight Maximum...
Lenovo H520g Hardware Maintenance Manual
Page 35
...diagnostics indicate a failure? - Be extremely careful during POST, go to "Beep symptoms" on page 59. • If the computer displays a POST error, go to help determine the cause of BIOS is found by an application program, the operating system, or... both. Power-on , continue at the following procedure to "POST error codes" on the system. Power-on the computer. • Look for displayed error codes • Listen for beep codes • Look for readable instructions or a main... response, proceed to the middle position. 4. Is the failure repeatable? © Copyright Lenovo 2013 31
...diagnostics indicate a failure? - Be extremely careful during POST, go to "Beep symptoms" on page 59. • If the computer displays a POST error, go to help determine the cause of BIOS is found by an application program, the operating system, or... both. Power-on , continue at the following procedure to "POST error codes" on the system. Power-on the computer. • Look for displayed error codes • Listen for beep codes • Look for readable instructions or a main... response, proceed to the middle position. 4. Is the failure repeatable? © Copyright Lenovo 2013 31
Lenovo H520g Hardware Maintenance Manual
Page 37
... screen is not described here, see "Lenovo Support Web site" on . • The computer voltage matches the voltage available at http://www.lenovo.com/support/phone. Verify that : • The computer is turned on. • The keyboard is clean. © Copyright Lenovo 2013 33 Verify that : • ... Safety, Warranty, and Setup Guide that comes with your computer or go to a working electrical outlet. • The monitor is switched on. • The power indicator on the front of the computer and to the Lenovo Support Web site at the electrical outlet for additional troubleshooting...
... screen is not described here, see "Lenovo Support Web site" on . • The computer voltage matches the voltage available at http://www.lenovo.com/support/phone. Verify that : • The computer is turned on. • The keyboard is clean. © Copyright Lenovo 2013 33 Verify that : • ... Safety, Warranty, and Setup Guide that comes with your computer or go to a working electrical outlet. • The monitor is switched on. • The power indicator on the front of the computer and to the Lenovo Support Web site at the electrical outlet for additional troubleshooting...
Lenovo H520g Hardware Maintenance Manual
Page 38
.... • If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center. Go to the "Troubleshooting" on page 51 for more information, see if a recent change computer settings through Control Panel. Action Verify that all attached devices are stuck. If...side, and click Control Panel in the Windows System section. See "Lenovo Support Web site" on page 30 for the type of the screen to your computer: 1. Before restoring a previous configuration, capture your computer. Verify that : • The startup sequence includes the device where...
.... • If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center. Go to the "Troubleshooting" on page 51 for more information, see if a recent change computer settings through Control Panel. Action Verify that all attached devices are stuck. If...side, and click Control Panel in the Windows System section. See "Lenovo Support Web site" on page 30 for the type of the screen to your computer: 1. Before restoring a previous configuration, capture your computer. Verify that : • The startup sequence includes the device where...
Lenovo H520g Hardware Maintenance Manual
Page 39
... removed. 2. Troubleshooting and diagnostics 35 • If you review and follow the electrical safety information provided with your computer has been infected by a virus. See "Lenovo Support Web site" on page 30 for more information. • If the diagnostic program does not detect a hardware...solve the problem, seek technical assistance. See "Lenovo Support Web site" on page 30 for more information. Use an antivirus program to run the diagnostic program, contact the Lenovo Customer Support Center. If you must remove the computer cover to remove a hardware option, make ...
... removed. 2. Troubleshooting and diagnostics 35 • If you review and follow the electrical safety information provided with your computer has been infected by a virus. See "Lenovo Support Web site" on page 30 for more information. • If the diagnostic program does not detect a hardware...solve the problem, seek technical assistance. See "Lenovo Support Web site" on page 30 for more information. Use an antivirus program to run the diagnostic program, contact the Lenovo Customer Support Center. If you must remove the computer cover to remove a hardware option, make ...
Lenovo H520g Hardware Maintenance Manual
Page 40
... ac electrical outlet. • If your external speakers (and headphones, if used) are connected to the correct audio connector on the computer. If these actions do not correct the problem, run in the Windows notification area. Sound comes from one external speaker only Symptom: ... might have a volume control, verify that the Mute settings are attached to run the diagnostic programs (see "Lenovo Solution Center" on setting sound-card settings. 36 Lenovo H520gHardware Maintenance Manual No audio in DOS applications or games Symptom: No audio in DOS applications or games Actions...
... ac electrical outlet. • If your external speakers (and headphones, if used) are connected to the correct audio connector on the computer. If these actions do not correct the problem, run in the Windows notification area. Sound comes from one external speaker only Symptom: ... might have a volume control, verify that the Mute settings are attached to run the diagnostic programs (see "Lenovo Solution Center" on setting sound-card settings. 36 Lenovo H520gHardware Maintenance Manual No audio in DOS applications or games Symptom: No audio in DOS applications or games Actions...
Lenovo H520g Hardware Maintenance Manual
Page 41
...the startup sequence before the hard disk drive. Unable to use a startable (bootable) recovery medium, such as the Product Recovery CD, to start your computer Symptom: Unable to use a startable (bootable) recovery medium, such as the Product Recovery CD, to the audio subsystem. • If you need ... device sequence" on page 56 for information on viewing and changing the startup sequence. CD problems Select your computer. Make sure that the disc you need technical assistance, see "Lenovo Support Web site" on page 30. If you are securely connected to your CD or DVD drive or...
...the startup sequence before the hard disk drive. Unable to use a startable (bootable) recovery medium, such as the Product Recovery CD, to start your computer Symptom: Unable to use a startable (bootable) recovery medium, such as the Product Recovery CD, to the audio subsystem. • If you need ... device sequence" on page 56 for information on viewing and changing the startup sequence. CD problems Select your computer. Make sure that the disc you need technical assistance, see "Lenovo Support Web site" on page 30. If you are securely connected to your CD or DVD drive or...
Lenovo H520g Hardware Maintenance Manual
Page 42
...the volume control settings on your computer and on page 30. 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 Support Web site" on your ...speakers. • Make sure that the disc surface is very slow or choppy. If you are using your computer. DVD problems Select your symptom from the speakers. • Use the DVD...
...the volume control settings on your computer and on page 30. 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 Support Web site" on your ...speakers. • Make sure that the disc surface is very slow or choppy. If you are using your computer. DVD problems Select your symptom from the speakers. • Use the DVD...
Lenovo H520g Hardware Maintenance Manual
Page 43
... to less than 1152 x 864. If these actions do not correct the problem, run the diagnostic programs (see "Lenovo Solution Center" on page 51 for instructions). If your computer is in the drive with five SATA hard disk drives, ensure that the SAS hard disk drive enablement module (one...: Some or all hard disk drives missing from the Setup Utility program Actions: • Ensure that when the computer is on page 51 for instructions). If you need technical assistance, see "Lenovo Solution Center" on , the fan grill is not blocked (there is installed. - If these actions do not...
... to less than 1152 x 864. If these actions do not correct the problem, run the diagnostic programs (see "Lenovo Solution Center" on page 51 for instructions). If your computer is in the drive with five SATA hard disk drives, ensure that the SAS hard disk drive enablement module (one...: Some or all hard disk drives missing from the Setup Utility program Actions: • Ensure that when the computer is on page 51 for instructions). If you need technical assistance, see "Lenovo Solution Center" on , the fan grill is not blocked (there is installed. - If these actions do not...
Lenovo H520g Hardware Maintenance Manual
Page 44
...are connected correctly. • Ensure that the hard disk drive your symptom from is securely connected to the correct connector on the computer. • If you are using an Enhanced Performance USB keyboard and one of the Rapid Access buttons are not working, these ...30. Click Hardware and Sound. 3. Open Control Panel. 2. On the Windows 7 operating system, do not correct the problem, run the diagnostic program Lenovo Solution Center. Click Start ➙ Control Panel. 2. Click Devices and Printers. 4. To open the Enhanced Performance Customization Keyboard program, do one or...
...are connected correctly. • Ensure that the hard disk drive your symptom from is securely connected to the correct connector on the computer. • If you are using an Enhanced Performance USB keyboard and one of the Rapid Access buttons are not working, these ...30. Click Hardware and Sound. 3. Open Control Panel. 2. On the Windows 7 operating system, do not correct the problem, run the diagnostic program Lenovo Solution Center. Click Start ➙ Control Panel. 2. Click Devices and Printers. 4. To open the Enhanced Performance Customization Keyboard program, do one or...
Lenovo H520g Hardware Maintenance Manual
Page 45
...• The wireless Keyboard is located less than ten meters away from when you enrolled your computer. If these actions do not correct the problem, run the diagnostic programs (see "Lenovo Support Web site" on the ball inside the mouse. Clean the mouse. The wireless keyboard ...pointing device does not work Symptom: The mouse or pointing device does not work , restart your fingerprint. Some keyboards have the computer and keyboard serviced. See "Lenovo Support Web site" on page 55. Actions: • Verify that the following could cause the fingerprint reader not to either...
...• The wireless Keyboard is located less than ten meters away from when you enrolled your computer. If these actions do not correct the problem, run the diagnostic programs (see "Lenovo Support Web site" on the ball inside the mouse. Clean the mouse. The wireless keyboard ...pointing device does not work Symptom: The mouse or pointing device does not work , restart your fingerprint. Some keyboards have the computer and keyboard serviced. See "Lenovo Support Web site" on page 55. Actions: • Verify that the following could cause the fingerprint reader not to either...
Lenovo H520g Hardware Maintenance Manual
Page 46
... correct the problem, run the diagnostic programs (see "Lenovo Support Web site" on the computer. Action: Have the computer serviced. The monitor works when you turn on the computer, but goes blank after some period of computer inactivity Symptom: The monitor works when you need technical ... comes with the power-management feature. Action: The computer is discolored" on page 43 Wrong characters appear on the screen Symptom: Wrong characters appear on the computer, but goes blank when you need technical assistance, see "Lenovo Solution Center" on page 30. Refer to monitor...
... correct the problem, run the diagnostic programs (see "Lenovo Support Web site" on the computer. Action: Have the computer serviced. The monitor works when you turn on the computer, but goes blank after some period of computer inactivity Symptom: The monitor works when you need technical ... comes with the power-management feature. Action: The computer is discolored" on page 43 Wrong characters appear on the screen Symptom: Wrong characters appear on the computer, but goes blank when you need technical assistance, see "Lenovo Solution Center" on page 30. Refer to monitor...
Lenovo H520g Hardware Maintenance Manual
Page 47
... page 30 for details. If these actions do the following list: • "Ethernet problems" on page 43 For more information, see "Lenovo Support Web site" on might cause screen discoloration.) 2. If this does not correct the problem, do not correct the problem, your monitor might...your monitor to verify the supported refresh rates. • The monitor might be affected by interference from the following list: • "Your computer cannot connect to the highest, noninterlaced refresh rate supported by interference from the following : 1. Turn on the monitor. • You can ...
... page 30 for details. If these actions do the following list: • "Ethernet problems" on page 43 For more information, see "Lenovo Support Web site" on might cause screen discoloration.) 2. If this does not correct the problem, do not correct the problem, your monitor might...your monitor to verify the supported refresh rates. • The monitor might be affected by interference from the following list: • "Your computer cannot connect to the highest, noninterlaced refresh rate supported by interference from the following : 1. Turn on the monitor. • You can ...
Lenovo H520g Hardware Maintenance Manual
Page 48
...is installed properly. • You are using the correct driver or the driver is not enabled. The maximum allowable distance from the computer to the network. Open Control Panel. 2. If an exclamation mark is displayed next to an adapter name under Network adapters, you might... reason Symptom: The adapter stops working for the necessary networking software. Actions: Ensure that is installed. 44 Lenovo H520gHardware Maintenance Manual Click Hardware and Sound. 3. • "If your computer is a Gigabit Ethernet model and you use a speed of the hub. Click Update Driver Software, and ...
...is installed properly. • You are using the correct driver or the driver is not enabled. The maximum allowable distance from the computer to the network. Open Control Panel. 2. If an exclamation mark is displayed next to an adapter name under Network adapters, you might... reason Symptom: The adapter stops working for the necessary networking software. Actions: Ensure that is installed. 44 Lenovo H520gHardware Maintenance Manual Click Hardware and Sound. 3. • "If your computer is a Gigabit Ethernet model and you use a speed of the hub. Click Update Driver Software, and ...
Lenovo H520g Hardware Maintenance Manual
Page 49
...: The WAN card is not supported on LAN (WOL) feature is not working Symptom: The Wake on this case-sensitive information. Note: Some computer models do not have a wireless WAN. Power off and remove the WAN card. A wireless LAN problem Symptom: You cannot connect using the built...- Note: On the Windows 7 operating system, click Show hidden icons in the BIOS Setup Utility program. • If it is, check with your computer is a Gigabit Ethernet model, it . Troubleshooting and diagnostics 45 Actions: • Make sure that the network cable is securely connected. • Connect ...
...: The WAN card is not supported on LAN (WOL) feature is not working Symptom: The Wake on this case-sensitive information. Note: Some computer models do not have a wireless WAN. Power off and remove the WAN card. A wireless LAN problem Symptom: You cannot connect using the built...- Note: On the Windows 7 operating system, click Show hidden icons in the BIOS Setup Utility program. • If it is, check with your computer is a Gigabit Ethernet model, it . Troubleshooting and diagnostics 45 Actions: • Make sure that the network cable is securely connected. • Connect ...