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Lenovo ThinkCentre Edge 91 (English) User Guide - Page 68

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3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 30. 4. Pivot the drive bay assembly upward. See "Accessing the system board components and drives" on page 32. 5. Disconnect the front audio and USB assembly cables from the system board. See "Locating parts on the system board" on page 12. Note: Make sure you note the locations of the cables when you disconnect the cables from the system board. 6. Remove the screw that secures the front audio and USB assembly bracket to the chassis to remove the bracket from the chassis. Figure 42. Removing the front audio and USB assembly 7. Install the front audio and USB assembly bracket into the chassis and align the screw hole in the bracket with the corresponding hole in the chassis. 8. Install the screw to secure the bracket to the chassis. 9. Pivot the drive bay assembly upward and reconnect the front USB and front audio cables to the system board. See "Locating parts on the system board" on page 12. 10. Reconnect the front audio and USB assembly cables to the front audio connector and the front USB connector on the system board. See "Locating parts on the system board" on page 12. 11. Lower the drive bay assembly. See "Accessing the system board components and drives" on page 32. 12. Reinstall the front bezel. See "Removing and reinstalling the front bezel" on page 30. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to "Completing the parts replacement" on page 57. Replacing the keyboard or mouse Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety information" on page v. 56 ThinkCentre Edge User Guide

Section	Page
Important safety information	7
Service and upgrades	7
Static electricity prevention	7
Power cords and power adapters	8
Extension cords and related devices	8
Plugs and outlets	9
External devices	9
Heat and product ventilation	9
Operating environment	10
Modem safety information	10
Laser compliance statement	11
Power supply statement	11
Cleaning and maintenance	11
Chapter 1. Product overview	13
Features	13
Specifications	16
Software overview	17
Software provided by Lenovo	17
Adobe Reader	19
Antivirus software	19
Locations	19
Locating connectors, controls, and indicators on the front of yo	20
Locating connectors on the rear of your computer	21
Locating components	23
Locating parts on the system board	24
Locating internal drives	25
Machine type and model label	26
Chapter 2. Using your computer	27
Frequently asked questions	27
Using the keyboard	27
Using Windows shortcut keys	27
Using a fingerprint reader	28
Using the wheel mouse	28
Adjusting audio	28
About your computer audio	28
Setting the volume from the desktop	29
Setting the volume from Control Panel	29
Using CDs and DVDs	29
Handling and storing CD and DVD media	29
Playing a CD or DVD	30
Recording a CD or DVD	30
Chapter 3. You and your computer	31
Accessibility and comfort	31
Arranging your workspace	31
Comfort	31
Glare and lighting	32
Air circulation	32
Electrical outlets and cable lengths	32
Register your computer with Lenovo	33
Moving your computer to another country or region	33
Voltage-selection switch	33
Replacement power cords	33
Chapter 4. Security	35
Security features	35
Locking the computer cover	35
Attaching an integrated cable lock	37
Using passwords	37
BIOS passwords	37
Windows passwords	38
Configuring the fingerprint reader	38
Using and understanding firewalls	38
Protecting data against viruses	38
Chapter 5. Installing or replacing hardware	41
Handling static-sensitive devices	41
Installing or replacing hardware	41
Installing external options	41
Removing the computer cover	42
Removing and reinstalling the front bezel	42
Accessing the system board components and drives	44
Installing or replacing a PCI card	45
Installing or replacing a memory module	47
Replacing the battery	49
Replacing the hard disk drive	50
Replacing the optical drive	52
Replacing the power supply assembly	56
Replacing the heat sink and fan assembly	60
Replacing the microprocessor	63
Replacing the system fan assembly	66
Replacing the front audio and USB assembly	67
Replacing the keyboard or mouse	68
Completing the parts replacement	69
Chapter 6. Recovery information	71
Creating and using recovery media	71
Creating recovery media	71
Using recovery media	72
Performing backup and recovery operations	72
Performing a backup operation	72
Performing a recovery operation	73
Using the Rescue and Recovery workspace	73
Creating and using a rescue medium	74
Creating a rescue medium	74
Using a rescue medium	74
Reinstalling preinstalled applications and device drivers	75
Reinstalling software programs	76
Reinstalling device drivers	76
Solving recovery problems	76
Chapter 7. Using the Setup Utility program	79
Starting the Setup Utility program	79
Viewing and changing settings	79
Using passwords	79
Password considerations	80
Power-On Password	80
Administrator Password	80
Hard Disk Password	80
Setting, changing, and deleting a password	80
Erasing lost or forgotten passwords (clearing CMOS)	81
Enabling or disabling a device	81
Selecting a startup device	82
Selecting a temporary startup device	82
Selecting or changing the startup device sequence	82
Enabling ErP compliance mode	82
Smart performance choices	83
Exiting the Setup Utility program	83
Chapter 8. Updating system programs	85
Using system programs	85
Updating (flashing) the BIOS from a disc	85
Updating (flashing) the BIOS from your operating system	86
Recovering from a POST/BIOS update failure	86
Chapter 9. Preventing problems	87
Keeping your computer current	87
Getting the latest device drivers for your computer	87
Updating your operating system	87
Using System Update	87
Cleaning and maintenance	88
Basics	88
Cleaning your computer	89
Good maintenance practices	90
Moving your computer	90
Chapter 10. Troubleshooting and diagnostics	91
Basic troubleshooting	91
Troubleshooting procedure	92
Troubleshooting	92
Audio problems	93
CD problems	94
DVD problems	95
Intermittent problems	97
Keyboard, mouse, or pointing device problems	97
Monitor problems	99
Networking problems	100
Option problems	103
Performance and lockup problems	104
Printer problems	105
Serial port problems	106
Software problems	106
USB problems	107
Diagnostic programs	107
Lenovo Solution Center	108
Lenovo ThinkVantage Toolbox	108
PC-Doctor for DOS	108
Chapter 11. Getting information, help, and service	111
Information resources	111
Lenovo ThinkVantage Tools	111
Lenovo Welcome	111
Help and Support	111
Safety and Warranty	111
Lenovo Web site	111
Lenovo Support Web site	112
Help and service	112
Using the documentation and diagnostic programs	112
Calling for service	112
Using other services	113
Purchasing additional services	113
Appendix A. Notices	115
Trademarks	116
Appendix B. Regulatory information	117
Export classification notice	117
Television output notice	117
Electronic emissions notices	117
Federal Communications Commission Declaration of Conformity	117
Additional regulatory information	119
Appendix C. WEEE and recycling information	121
Important WEEE information	121
Recycling information	121
Recycling information for Brazil	122
Battery recycling information for Taiwan	122
Battery recycling information for the European Union	123
Appendix D. Restriction of Hazardous Substances Directive (RoHS)	125
China RoHS	125
Turkish RoHS	125
Ukraine RoHS	125
India RoHS	126

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3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 30.

4. Pivot the drive bay assembly upward. See “Accessing the system board components and drives”

on page 32.

5. Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on

the system board” on page 12.

Note:

Make sure you note the locations of the cables when you disconnect the cables from the system

board.

6. Remove the screw that secures the front audio and USB assembly bracket to the chassis to remove

the bracket from the chassis.

Figure 42. Removing the front audio and USB assembly

7. Install the front audio and USB assembly bracket into the chassis and align the screw hole in the

bracket with the corresponding hole in the chassis.

8. Install the screw to secure the bracket to the chassis.

9. Pivot the drive bay assembly upward and reconnect the front USB and front audio cables to the system

board. See “Locating parts on the system board” on page 12.

10. Reconnect the front audio and USB assembly cables to the front audio connector and the front USB

connector on the system board. See “Locating parts on the system board” on page 12.

11. Lower the drive bay assembly. See “Accessing the system board components and drives” on page 32.

12. Reinstall the front bezel. See “Removing and reinstalling the front bezel” on page 30.

What to do next:

•

To work with another piece of hardware, go to the appropriate section.

•

To complete the installation or replacement, go to “Completing the parts replacement” on page 57.

Replacing the keyboard or mouse

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information”

on page v.

ThinkCentre Edge User Guide