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Replacing the front audio and USB assembly

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9. Install the new system fan assembly by aligning the new rubber mounts that came with the new system fan assembly with the corresponding holes in the chassis, and then push the rubber mounts through the holes. Then, carefully pull on the tips of the rubber mounts from the bottom until the new system fan assembly is secured in place. Figure 41. Installing the system fan assembly 10. Connect the new system fan assembly cable to the system fan connector on the system board. See "Locating parts on the system board" on page 11. 11. Reinstall the heat sink fan duct. See "Replacing the heat sink and fan assembly" on page 47. 12. Reinstall the hard disk drive. See "Replacing the hard disk drive" on page 38. 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 65. Replacing the front audio and USB assembly Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety information" on page v. This section provides instructions on how to replace the front audio and USB assembly. To replace the front audio and USB assembly, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See "Removing the computer cover" on page 30. 54 ThinkCentre 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	22
Locating parts on the system board	23
Locating internal drives	24
Machine type and model label	25
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
Registering your computer	33
Moving your computer to another country or region	33
Voltage-selection switch	33
Replacement power cords	34
Chapter 4. Security	35
Security features	35
Locking the computer cover	36
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	48
Replacing the hard disk drive	50
Replacing the optical drive	52
Replacing the power supply assembly	55
Replacing the heat sink and fan assembly	59
Replacing the microprocessor	62
Replacing the system fan assembly	65
Replacing the front audio and USB assembly	66
Replacing the WiFi units	67
Installing or removing the rear WiFi antenna	72
Installing or removing the front WiFi antenna	74
Replacing the keyboard or mouse	76
Completing the parts replacement	77
Chapter 6. Recovery information	79
Creating and using recovery media	79
Creating recovery media	79
Using recovery media	80
Performing backup and recovery operations	80
Performing a backup operation	80
Performing a recovery operation	81
Using the Rescue and Recovery workspace	81
Creating and using a rescue medium	82
Creating a rescue medium	82
Using a rescue medium	82
Reinstalling preinstalled applications and device drivers	83
Reinstalling software programs	84
Reinstalling device drivers	84
Solving recovery problems	84
Chapter 7. Using the Setup Utility program	87
Starting the Setup Utility program	87
Viewing and changing settings	87
Using passwords	87
Password considerations	88
Power-On Password	88
Administrator Password	88
Hard Disk Password	88
Setting, changing, and deleting a password	88
Erasing lost or forgotten passwords (clearing CMOS)	89
Enabling or disabling a device	89
Selecting a startup device	89
Selecting a temporary startup device	90
Selecting or changing the startup device sequence	90
Enabling ErP compliance mode	90
Exiting the Setup Utility program	91
Chapter 8. Updating system programs	93
Using system programs	93
Updating (flashing) the BIOS from a disc	93
Updating (flashing) the BIOS from your operating system	94
Recovering from a POST/BIOS update failure	94
Chapter 9. Preventing problems	95
Keeping your computer current	95
Getting the latest device drivers for your computer	95
Updating your operating system	95
Using System Update	96
Cleaning and maintenance	96
Basics	96
Cleaning your computer	97
Good maintenance practices	98
Moving your computer	98
Chapter 10. Troubleshooting and diagnostics	101
Basic troubleshooting	101
Troubleshooting procedure	102
Troubleshooting	102
Audio problems	103
CD problems	104
DVD problems	105
Intermittent problems	107
Keyboard, mouse, or pointing device problems	107
Monitor problems	108
Networking problems	110
Option problems	113
Performance and lockup problems	114
Printer problems	115
Serial port problems	116
Software problems	116
USB problems	117
Diagnostic programs	117
Lenovo Solution Center	118
Lenovo ThinkVantage Toolbox	118
PC-Doctor for DOS	119
Chapter 11. Getting information, help, and service	121
Information resources	121
Lenovo ThinkVantage Tools	121
Lenovo Welcome	121
Help and Support	121
Safety and Warranty	121
Lenovo Web site	121
Lenovo Support Web site	122
Help and service	122
Using the documentation and diagnostic programs	122
Calling for service	122
Using other services	123
Purchasing additional services	123
Appendix A. Notices	125
Trademarks	126
Appendix B. Regulatory information	127
Export classification notice	127
Television output notice	127
Electronic emissions notices	127
Federal Communications Commission Declaration of Conformity	127
Additional regulatory information	129
Appendix C. WEEE and recycling information	131
Important WEEE Information	131
Recycling information	131
Recycling information for Brazil	132
Battery recycling information for Taiwan	132
Battery recycling information for the European Union	133
Appendix D. Restriction of Hazardous Substances Directive (RoHS)	135
China RoHS	135
Turkish RoHS	135
Ukraine RoHS	135
India RoHS	136
Appendix E. Ek Bilgiler	137
Appendix F. Servis istasyonlari	139

Match case Limit results 1 per page

9. Install the new system fan assembly by aligning the new rubber mounts that came with the new system

fan assembly with the corresponding holes in the chassis, and then push the rubber mounts through the

holes. Then, carefully pull on the tips of the rubber mounts from the bottom until the new system fan

assembly is secured in place.

Figure 41. Installing the system fan assembly

10. Connect the new system fan assembly cable to the system fan connector on the system board. See

“Locating parts on the system board” on page 11.

11. Reinstall the heat sink fan duct. See “Replacing the heat sink and fan assembly” on page 47.

12. Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 38.

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 65.

Replacing the front audio and USB assembly

Attention:

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

on page v.

This section provides instructions on how to replace the front audio and USB assembly.

To replace the front audio and USB assembly, do the following:

1. Turn off the computer and disconnect all power cords from electrical outlets.

2. Remove the computer cover. See “Removing the computer cover” on page 30.

ThinkCentre User Guide