Lenovo H50-55, H50-50, H50-05, H50-00 Hardware Maintenance Manual [en, ar, bg, cs, da, de, el, es, et, fi, fr, he, hr, hu, it, ko, nb, nl, pl, pt, ro, ru, sk, sl, sr, sv, th, tr, uk, zh]

Lenovo H50 SeriesHardware Maintenance

Manual

Machine Types: 90C1 [H50-00]; 90BH [H50-05]; 90B6 [H50-50 ES]; 90B7 [H50-50 Non-ES]; 90BF [H50-55 ES]; 90BG [H50-55 Non-ES]

Lenovo H50 Series

Hardware Maintenance Manual

Machine Types: 90C1 [H50-00]; 90BH [H50-05]; 90B6 [H50-50 ES]; 90B7 [H50-50 Non-ES]; 90BF [H50-55 ES]; 90BG [H50-55 Non-ES]

Second Edition (September 2014)12th

© Copyright Lenovo 2014.

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

Contents

Chapter 1. About this manual . . . .	.	1
Important Safety Information . . . . . . . .	.	1
Chapter 2. Safety information . . . .	.	3
General safety . . . . . . . . . . . . . .	.	3
Electrical safety . . . . . . . . . . . . .	.	3
Safety inspection guide . . . . . . . . . .	.	5
Handling electrostatic discharge-sensitive
devices . . . . . . . . . . . . . . . .	.	5
Grounding requirements . . . . . . . . . .	.	6
Safety notices . . . . . . . . . . . . . .	.	6
Chapter 3. General information . . .	.	9
Specifications . . . . . . . . . . . . . .	.	9
Chapter 4. General Checkout . . . .	.	11
Chapter 5. Using the Setup Utility. .	.	13
Starting the Lenovo BIOS Setup Utility program	.	13
Viewing and changing settings . . . . . . .	.	13
Using passwords. . . . . . . . . . . . .	.	13
Enabling or disabling a device . . . . . . .	.	15
Selecting a startup device . . . . . . . . .	.	16
Exiting the Lenovo BIOS Setup Utility program .	.	17
Chapter 6. Symptom-to-FRU Index .	.	19
Hard disk drive boot error . . . . . . . . .	.	19
Power Supply Problems . . . . . . . . . .	.	19
POST error codes . . . . . . . . . . . .	.	20
Undetermined problems . . . . . . . . . .	.	20

Chapter 7. Locating connectors,
controls and components . . . . . .	21
Chapter 8. Replacing hardware . . . .	31
General information. . . . . . . . . . . . .	31
Replacing the keyboard and mouse . . . . . .	32
Removing the computer cover . . . . . . . .	32
Removing the front bezel . . . . . . . . . .	34
Replacing an optical drive . . . . . . . . . .	35
Replacing the hard disk drive . . . . . . . . .	36
Replacing a memory module . . . . . . . . .	37
Replacing the graphic card . . . . . . . . . .	39
Replacing the heat-sink assembly . . . . . . .	41
Replacing an Intel CPU . . . . . . . . . . .	42
Replacing an AMD CPU . . . . . . . . . . .	44
Replacing the system fan . . . . . . . . . .	47
Replacing the Wi-Fi card. . . . . . . . . . .	50
Replacing the front card reader module . . . . .	50
Replacing the motherboard. . . . . . . . . .	51
Chapter 9. FRU lists-H50–00 . . . . .	55
Chapter 10. FRU lists-H50–05 . . . . .	63
Chapter 11. FRU lists-H50–50 . . . . .	73
Chapter 12. FRU lists-H50–55 . . . . .	81
Chapter 13. General information . . .	89
Additional Service Information . . . . . . . .	89

© Copyright Lenovo 2014

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iv Lenovo H50 SeriesHardware Maintenance Manual

Chapter 1. About this manual

This manual contains service and reference information for Lenovo H50 series desktop computers listed on the cover. It is intended only for trained servicers who are familiar with Lenovo computer products.

Before servicing a Lenovo product, be sure to read the Safety Information.

The description of the TV card in this manual is only used for the machines which have the TV card. It is invalid for those machines which do not have TV card.

Important Safety Information

Be sure to read all caution and danger statements in this book before performing any of the instructions.

Veuillez lire toutes les consignes de type DANGER et ATTENTION du présent document avant d’exécuter les instructions.

Lesen Sie unbedingt alle Hinweise vom Typ “ACHTUNG” oder “VORSICHT” in dieser Dokumentation, bevor Sie irgendwelche Vorgänge durchführen

Leggere le istruzioni introdotte da ATTENZIONE e PERICOLO presenti nel manuale prima di eseguire una qualsiasi delle istruzioni

Certifique-se de ler todas as instruções de cuidado e perigo neste manual antes de executar qualquer uma das instruções

Es importante que lea todas las declaraciones de precaución y de peligro de este manual antes de seguir las instrucciones.

© Copyright Lenovo 2014

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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 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 removes the strain from the muscles in your back.

Do not attempt to lift any objects that weigh more than 16 kg (35 lb) or objects that you think are too heavy for you.

•Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.

•Before you start the machine, ensure that other service representatives and the customer’s personnel are not in a hazardous position.

•Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.

•Keep your tool case away from walk areas so that other people will not trip over it.

•Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.

•Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, approximately 8 centimeters (3 inches) from the end.

•Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing. Remember: Metal objects are good electrical conductors.

•Wear safety glasses when you are: hammering, drilling soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes.

•After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.

•Reinstall all covers correctly before returning the machine to the customer.

Electrical safety

CAUTION:

Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunication systems, networks, and modems before you open the computer covers, unless instructed otherwise in the installation and configuration procedures.

© Copyright Lenovo 2014

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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 shock.

•Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly.

•Do not work alone under hazardous conditions or near equipment that has hazardous voltages.

•Disconnect all power before:

–Performing a mechanical inspection

–Working near power supplies

–Removing or installing Field Replaceable Units (FRUs)

•Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to power-off the wall box that supplies power to the machine and to lock the wall box in the off position.

•If you need to work on a machine that has exposed electrical circuits, observe the following precautions:

–Ensure that another person, familiar with the power-off controls, is near you. Remember: Another person must be there to switch off the power, if necessary.

–Use only one hand when working with powered-on electrical equipment; keep the other hand in your pocket or behind your back.

Remember: There must be a complete circuit to cause electrical shock. By observing the above rule, you may prevent a current from passing through your body.

–When using a tester, set the controls correctly and use the approved probe leads and accessories for that tester.

–Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as metal floor strips and machine frames.

Observe the special safety precautions when you work with very high voltages; these instructions are in the safety sections of maintenance information. Use extreme care when measuring high voltages.

•Regularly inspect and maintain your electrical hand tools for safe operational condition.

•Do not use worn or broken tools and testers.

•Never assume that power has been disconnected from a circuit. First, check that it has been powered-off.

•Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds.

•Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage.

•Do not service the following parts with the power on when they are removed from their normal operating places in a machine:

–Power supply units

–Pumps

–Blowers and fans

–Motor generators

and similar units. (This practice ensures correct grounding of the units.)

•If an electrical accident occurs:

–Use caution; do not become a victim yourself.

–Switch off power.

4 Lenovo H50 SeriesHardware Maintenance Manual

– 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 conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.

Consider these conditions and the safety hazards they present:

•Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock).

•Explosive hazards, such as a damaged CRT face or bulging capacitor

•Mechanical hazards, such as loose or missing hardware

The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and the power cord disconnected.

Checklist:

1.Check exterior covers for damage (loose, broken, or sharp edges).

2.Power-off the computer. Disconnect the power cord.

3.Check the power cord for:

a.A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0.1 ohm or less between the external ground pin and frame ground.

b.The power cord should be the appropriate type as specified in the parts listings.

c.Insulation must not be frayed or worn.

4.Remove the cover.

5.Check for any obvious alterations. Use good judgment as to the safety of any alterations.

6.Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

7.Check for worn, frayed, or pinched cables.

8.Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

Handling electrostatic discharge-sensitive devices

Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.

Notes:

1.Use product-specific ESD procedures when they exceed the requirements noted here.

2.Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.

When handling ESD-sensitive parts:

• Keep the parts in protective packages until they are inserted into the product.

Chapter 2. Safety information 5

•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 those listed below, to provide protection that meets the specific service requirement.

Note: The use of a grounding system is desirable but not required to protect against ESD damage.

–Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.

–Use an ESD common ground or reference point when working on a double-insulated or battery-operated system. You can use coax or connector-outside shells on these systems.

–Use the round ground-prong of the ac plug on ac-operated computers.

Grounding requirements

Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

Safety notices

The caution and danger safety notices in this section are provided in the language of English.

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 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 device covers, unless instructed otherwise in the installation and configuration procedures.

•Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices.

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To Connect		To Disconnect
1.	Turn everything OFF.	1.	Turn everything OFF.
2.	First, attach all cables to devices.	2.	First, remove power cords from outlet.
3.	Attach signal cables to connectors.	3.	Remove signal cables from connectors.
4.	Attach power cords to outlet.	4.	Remove all cables from devices.
5.	Turn device ON.

CAUTION:

When replacing the lithium battery, use only Part Number 45C1566 or an equivalent type battery recommended by the manufacturer. If your system has a module containing a lithium battery, replace it only with the same module type made by the same manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of.

Do not:

•Throw or immerse into water

•Heat to more than 100°C (212°F)

•Repair or disassemble

Dispose of the battery as required by local ordinances or regulations.

CAUTION:

When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are installed, note the following:

•Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device.

•Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure.

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.

Chapter 2. Safety information 7

≥18 kg(37 lbs)	≥32 kg(70.5 lbs)	≥55 kg(121.2 lbs)

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, ensure that all power cords are disconnected from the power source.

2 1

CAUTION:

Do not place any object weighing more than 82 kg (180 lbs.) on top of rack-mounted devices.

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Chapter 3. 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.

This section lists the physical specifications for your computer.

Type Lenovo H50 series

This section lists the physical specifications.

Environment

Air temperature:

Operating: 10° to 35°C

Transit: -20° to 55°C

Humidity:

Operating: 35% to 80%

Transit: 20% to 90% (40°C)

Altitude: 86KPa to 106KPa

Electrical input:

Input voltage: 90V-264V(AC)

Input frequency: 47Hz-63Hz

© Copyright Lenovo 2014

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Chapter 4. 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.

Use the following procedure to help determine the cause of the problem:

1.Power-off the computer and all external devices.

2.Check all cables and power cords.

3.Set all display controls to the middle position.

4.Power-on all external devices.

5.Power-on the computer.

•Look for displayed error codes

•Look for readable instructions or a main menu on the display.

If you did not receive the correct response, proceed to step 6. If you do receive the correct response, proceed to step 7.

6.Look at the following conditions and follow the instructions:

•If the computer displays a POST error, go to “POST error codes”.

•If the computer hangs and no error is displayed, continue at step 7.

7.If the test stops and you cannot continue, replace the last device tested.

© Copyright Lenovo 2014

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Chapter 5. Using the Setup Utility

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 Lenovo BIOS Setup Utility program

To start the Lenovo BIOS Setup Utility program, do the following:

1.If your computer is already on when you start this procedure, shut down the operating system and turn off the computer.

2.Press and hold the F1 key then turn on the computer. When the Lenovo BIOS Setup Utility program is displayed, release the F1 key.

Note: If a Power-On Password or an Administrator Password has been set, the Setup Utility program menu is not displayed until you type your password. For more information, see “Using passwords.”

Viewing and changing settings

System configuration options are listed in the Lenovo BIOS Setup Utility program menu. To view or change settings, see “Starting the Setup Utility program.”

You must use the keyboard when using the Lenovo BIOS Setup Utility menu. The keys used to perform various tasks are displayed on the bottom of each screen.

Using passwords

You can use the Lenovo BIOS Setup Utility program to set passwords to prevent unauthorized persons from gaining access to your computer and data. See “Starting the Setup Utility program.” The following types of passwords are available:

•Administrator Password

•Power-On Password

You do not have to set any passwords to use your computer. However, if you decide to set passwords, read the following sections.

Password considerations

A password can be any combination of letters and numbers up to 16 character (a-z, and 0-9). For security reasons, it is a good idea to use a strong password that cannot be easily compromised. We suggest that passwords should follow these rules:

•Strong passwords contain 7-16 characters, combine letters and numbers.

•Do not use your name or your user name.

•Do not use a common word or a common name.

•Be significantly different from your previous password.

Attention: Administrator and Power-On passwords are not case sensitive

© Copyright Lenovo 2014

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Administrator Password

Setting an Administrator Password deters unauthorized persons from changing configuration settings. You might want to set an Administrator Password if you are responsible for maintaining the settings of several computers.

After you set an Administrator Password, a password prompt is displayed every time you access the Lenovo BIOS Setup Utility program.

If both the Administrator and Power-On Password are set, you can type either password. However, you must use your Administrator Password to change any configuration settings.

Setting, changing, or deleting an Administrator password

To set an Administrator Password, do the following:

Note: A password can be any combination of letters and numbers up to 16 character (a-z, and 0-9). For more information, see “Password considerations” on page 13.

1.Start the Lenovo BIOS Setup Utility program (see “Starting the Lenovo BIOS Setup Utility program” on page 13).

2.From the Security menu, select Set Administrator Password and press the Enter key.

3.The password dialog box will be displayed. Type the password then press the Enter key.

4.Re-type the password to confirm, then press the Enter key. If you type the password correctly, the password will be installed.

To change an Administrator Password, do the following:

1.Start the Lenovo BIOS Setup Utility program (see “Starting the Lenovo BIOS Setup Utility program” on page 13).

2.From the Security menu, select Set Administrator Password and press the Enter key.

3.The password dialog box will be displayed. Type the current password then press Enter key.

4.Type the new password, then press Enter key. Re-type the password to confirm the new password, if you type the new password correctly, the new password will be installed. A Setup Notice will display that changes have been saved.

To delete a previously set Administrator Password, do the following :

1.From the Security menu, select Set Administrator Password and press the Enter key.

2.The password dialog box will be displayed. Type the current password and press the Enter key.

3.To delete an Administrator Password, Enter blank fields for each new password line item. A setup notice will display that changes have been saved.

4.Return to the Lenovo BIOS Setup Utility program menu and select the Exit option.

5.Select Save changes and Exit from the menu.

Power-On Password

When a Power-On Password is set, you cannot start the Lenovo BIOS Setup Utility program until a valid password is typed from the keyboard.

Setting, changing, or deleting a Power-On Password

Note: A password can be any combination of letters and numbers up to 16 character (a-z, and 0-9).

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To set a Power-On Password, do the following:

1.Start the Lenovo BIOS Setup Utility program (See ”Starting the Lenovo BIOS Setup Utility program” on page 13.)

2.From the Security menu, select Set Power-On Password and press the Enter key.

3.The password dialog box will be displayed. Type the password, and press the Enter key.

4.Re-type the password to confirm, if you type the password correctly, the password will be installed.

To change a Power-On Password, do the following:

1.Start the Lenovo BIOS Setup Utility program (See ”Starting the Lenovo BIOS Setup Utility program” on page 13.)

2.From the Security menu, select Set Power-On Password and press the Enter key.

3.The password dialog box will be displayed. Type the current password then press the Enter key.

4.Type the new password, then press the Enter key. Re-type the password to confirm the new password, if you type the new password correctly, the new password will be installed. A setup notice will display that changes have been saved.

To delete a previously set Power-On Password, do the following :

1.From the Security menu, select Set Power-On Password and press the Enter key.

2.The password dialog box will be displayed. Type the current password and press the Enter key.

3.To delete the Power-On Password, Enter blank fields for each new password line item. A setup notice will display that changes have been saved.

4.Return to the Lenovo BIOS Setup Utility program menu and select the Exit option.

5.Select Save changes and Exit from the menu.

Enabling or disabling a device

The Devices options is used to enable or disable user access to the following devices:

Serial Port Setup	Select this option to enable or disable Serial Port (com).
USB Functions	Select whether to enable or disable USB (Universal Serial
	Bus) functions. If it is disabled, the USB keyboard and/or
	USB mouse may be not able to be used without device
	driver support.
ATA Drive Setup	Select IDE, ACHI mode or disable SATA controller. Device
	driver support is required for ACHI mode. Depending on
	how the hard disk image was installed, changing this
	setting may prevent the system from booting.
Video Setup	To configure video related functions. This option allows
	you to configure system's initiate graphic adapter from
	either IGD (Integrated Graphics Device) or PEG (PCI
	Express Graphics). Keep on the IGD enabled based on
	the setup options.

Chapter 5. Using the Setup Utility 15

Onboard Audio Controller	Select whether to enable or disable the Onboard Audio
	Controller, when feature is set to Disabled all devices
	connected to the audio connectors (e.g. a headphone or
	a microphone) are disabled and can’t be used.
Onboard Ethernet Controller or LAN Boot Agent	Select whether to enable or disable Onboard Ethernet
	Controller, or select whether to enable or disable load
	onboard PXE (Preboot Execution Environment), or
	SMC (Secure Managed Client). This feature will allow
	the computer to boot from a server image.

To enable or disable a device, do the following:

1.Start the Setup Utility program (see “Starting the Setup Utility program” on page 13).

2.From the Setup Utility program menu, select Devices.

3.Select:

Serial Port Setup press the Enter key, and then select Serial Port Setup.

USB Setup press the Enter key, and then select USB Functions.

ATA Device Setup press the Enter key. Select Configure SATA as, press the Enter key and then select SATA mode.

Video Setup press the Enter key, and then select Video Setup.

Audio Setup press the Enter key, and then select Onboard Audio Controller.

Network Setup press the Enter key, then select Onboard Ethernet Support or LAN Boot Agent.

4.Select Disabled or Enabled and press the Enter key.

5.Return to the Lenovo BIOS Setup Utility program menu and select the Exit option.

6.Select Save changes and Exit from the menu.

Note: If you do not want to save the settings, select Discard changes and Exit from the menu.

Selecting a startup device

If your computer does not boot from a device such as the CD/DVD-ROM drive disk or hard disk as expected, follow one of the procedures below.

Selecting a temporary startup device

Use this procedure to startup from any boot device.

Note: Not all CDs, DVDs or hard disk drives are bootable.

1.Turn off your computer.

2.Press and hold the F12 key then turn on the computer. When the Startup Device Menu appears, release the F12 key.

Note: If the Startup Device Menu does not display using these steps, repeatedly press and release the F12 key rather than keeping it pressed when turning on the computer.

3.Use ↑ and ↓ arrows to select the desired startup device from the Startup Device Menu and press the Enter key to begin.

Note: Selecting a startup device from the Startup Device Menu does not permanently change the startup sequence.

Selecting or changing the startup device sequence

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To view or permanently change the configured startup device sequence, do the following:

1.Start the Lenovo BIOS Setup Utility program (see “Starting the Lenovo BIOS Setup Utility program” on page 13).

2.From the Lenovo BIOS Setup Utility program main menu, select the Startup option.

3.Press the Enter key, and select the devices for the Primary Boot Sequence. Read the information displayed on the right side of the screen.

4.Use - and ¯ arrows to select a device. Use the <+> or <-> keys to move a device up or down. Use the <×> key to exclude the device from or include the device in the boot sequence.

5.Return to the Lenovo BIOS Setup Utility program menu and select the Exit option.

6.Select Save changes and Exit from the menu.

Notes:

a.If you do not want to save the settings, select Discard changes and Exit from the menu.

b.If you have changed these settings and want to return to the default settings, select Load Optimal Defaults from the menu.

Exiting the Lenovo BIOS Setup Utility program

After you finish viewing or changing settings, press the Esc key to return to the Lenovo BIOS Setup Utility program main menu. You might have to press the Esc key several times. Do one of the following:

•If you want to save the new settings, select Save changes and Exit from the menu. When the Save & reset window shows, select the Yes button, and then press the Enter key to exit the Lenovo BIOS Setup Utility program.

•If you do not want to save the settings, select Discard changes and Exit from the menu. When the Reset Without Saving window shows, select the Yes button, and then press the Enter key to exit the Setup Utility program.

Chapter 5. Using the Setup Utility 17

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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 2014

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POST error codes

Each time you turn the computer on, it performs a series of tests to check that the system is operating correctly and that certain options are set. This series of tests is called the Power-On Self-Test, or POST. POST does the following:

•Checks some basic system-board operations

•Checks that the memory is working correctly

•Starts video operations

•Verifies that the boot drive is working

POST Error Message	Description/Action
Keyboard error	Cannot initialize the keyboard. Make sure the keyboard
	is properly connected to the computer and that no keys
	are held pressed during POST. To purposely configure
	the computer without a keyboard, select Keyboardless
	operation in Startup option to Enabled. The BIOS then
	ignores the missing keyboard during POST.
Reboot and Select proper Boot device or Insert Boot	The BIOS was unable to find a suitable boot device. Make
Media in selected Boot device	sure the boot drive is properly connected to the computer.
	Make sure you have bootable media in the boot device.

Undetermined problems

1.Power-off the computer.

2.Remove or disconnect the following components (if connected or installed) one at a time.

a.External devices (modem, printer, or mouse)

b.Extended video memory

c.External Cache

d.External Cache RAM

e.Hard disk drive

f.Disk drive

3.Power-on the computer to re-test the system.

4.Repeat steps 1 through 3 until you find the failing device or component.

If all devices and components have been removed and the problem continues, replace the system board.

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Chapter 7. Locating connectors, controls and components

This section provides illustrations to help locate the various connectors, controls and components of the computer.

Font view

The following illustration shows the location of controls and components on the front of the computer.

Attention: Be careful not to block any air vents on the computer. Blocked air vents can cause overheating.

1.	Hard disk drive indicator	5.	Memory card reader (selected models only)
2.	Power button	6.	USB 2.0 connectors (2)
3.	Optical Drive (selected models only)	7.	Headphone connector
4.	Optical drive eject button	8.	Microphone connector

Attention: The effective range of the Built-in IR Emitter is 10 feet (3m).

© Copyright Lenovo 2014

21

Rear view

The following illustration shows the location of connectors and components on the rear of the computer.

1.	USB 3.0 connector	6.	Power connector
2.	On-board VGA connector	7.	Wi-Fi antenna (selected models only)
3.	USB 2.0 connectors (2)	8.	Cable clip
4.	Ethernet connector	9.	Expansion card slot
5.	Audio connectors

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1.	On-board VGA connector																										6.				Audio connectors
2.	HDMI connector (selected models only)																										7.				Wi-Fi antenna (selected models only)
3.	USB 2.0 connectors (2)																										8.				Power connector
4.	Ethernet connector																										9.				Cable clip
5.	USB 3.0 connectors (2)																										10. Expansion card slots (some models are equipped with
																											graphics card, USB 3.0 or TV tuner card)

Chapter 7. Locating connectors, controls and components 23