Lenovo H520S manual Symptom-to-FRU Index, Hard disk drive boot error, Power Supply Problems

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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 4, “General Checkout,” on page 11. 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 20.

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 code when running a test but did receive a POST error message, diagnose the POST error message first.

If you did not receive any error message look for a description of your error symptoms in the first part of this index.

Hard disk drive boot error

A hard disk drive boot error can have the following causes.

Error

FRU/Action

 

 

The startup drive is not included in the boot sequence

Check the configuration and ensure the startup drive is

in configuration.

in the boot sequence.

 

 

No operating system installed on the boot drive.

Install an operating system on the boot drive.

 

 

The boot sector on the startup drive is corrupted.

The drive must be formatted. Do the following:

 

1. Attempt to back-up the data on the failing hard disk

 

drive.

 

2. Use the operating system to format the hard disk

 

drive.

 

 

The drive is defective.

Replace the hard disk drive.

 

 

Power Supply Problems

Follow these procedures if you suspect there is a power supply problem.

Check/Verify

FRU/Action

 

 

Check that the following are properly installed:

Reseat connectors

Power Cord

 

On/Off Switch connector

 

• System Board Power Supply connectors

 

Microprocessor(s) connection

 

 

 

Check the power cord.

Power Cord

 

 

Check the power-on switch.

Power-on Switch

 

 

 

© Copyright Lenovo 2012

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Lenovo H520s Hardware Maintenance Manual Page Lenovo H520s Hardware Maintenance Manual Page Contents Iv Lenovo H520sHardware Maintenance Manual About this manual Important Safety InformationLenovo H520sHardware Maintenance Manual General safety Safety informationElectrical safety Lenovo H520sHardware Maintenance Manual Handling electrostatic discharge-sensitive devices Safety inspection guideGrounding requirements Safety noticesTo Connect To Disconnect Do not≥18 kg37 lbs ≥32 kg70.5 lbs ≥55 kg121.2 lbs General information SpecificationsType Lenovo H520s EnvironmentLenovo H520sHardware Maintenance Manual General Checkout Lenovo H520sHardware Maintenance Manual Starting the Lenovo Bios Setup Utility program Using the Setup UtilityViewing and changing settings Using passwordsSetting, changing, or deleting an Administrator password Administrator PasswordSetting, changing, or deleting a Power-On Password Select Save changes and Exit from the menu Enabling or disabling a deviceSelecting a temporary startup device Selecting a startup deviceSelecting or changing the startup device sequence Exiting the Lenovo Bios Setup Utility program Lenovo H520sHardware Maintenance Manual Hard disk drive boot error Symptom-to-FRU IndexPower Supply Problems Error FRU/ActionUndetermined problems Post error codesPost Error Message Description/Action Locating connectors, controls and components Font view Rear view Hardware components Identifying parts on the motherboard Lenovo H520sHardware Maintenance Manual Replacing hardware Pre-disassembly instructionsGeneral information Removing the computer cover Replacing the keyboard and mouseTo replace the keyboard and mouse To remove the computer coverRemoving the front bezel To remove the front bezel Replacing an optical driveTo replace an optical drive Replacing hardware To replace the hard disk drive Replacing the hard disk driveReplacing a memory module Replacing the Power supply Replacing the graphic card Lenovo H520sHardware Maintenance Manual Replacing the microprocessor fan Replacing the system fanReplacing the heat-sink Replacing the CPU Lenovo H520sHardware Maintenance Manual Replacing the Wi-Fi card Replacing the front USB/card reader/audio module Replacing the motherboard Lenovo H520sHardware Maintenance Manual Processor FRU listsMother Board MemoryMT16JTF51264AZ-1G4D1 4GB DDRIII1333RAMR Hard Drive HMT351U6CFR8C-PB 4GB D3-1600RAM-HFOptical Drive Power SupplyGraphic Card MechanicalRemote Controller Wi-Fi PCI-E Interface CardTV Tunner USB 3.0 PCI-E Interface CardKeyboard & Mouse Chassis Lenovo H520sHardware Maintenance Manual Power management Additional Service InformationAdvanced configuration and power interface Acpi Bios Automatic Power-On features
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