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Removing and reinstalling the front bezel Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to: http://www.lenovo.com/support This section provides instructions on how to remove and reinstall the front bezel. To remove and reinstall the front bezel: 1. Remove the computer cover. See "Removing the computer cover" on page 73. 2. Remove the front bezel by releasing the three plastic tabs on the left side and pivoting the front bezel outward. Carefully set the front bezel to the side without disconnecting the power switch and LED assembly cable. Figure 6. Removing the front bezel 3. To reinstall the front bezel, align the plastic tabs on the right side of the front bezel with the corresponding holes in the chassis, and then pivot the front bezel inward until it snaps into position on the left side. 4. Go to "Completing the FRU replacement" on page 103. Chapter 8. Replacing FRUs (Machine Types: 3063, 3231, 3285, 4084, 4085, 4086, 4087, 6138, 6209, 6239, 6302, 7188, 7244, 7347, 7355, 7358, 7373, 7484, 7571, 7628, 7635, 7639, 8494, 8854, 9728, 9960, and 9965.) 77

Section	Page
Chapter 1. About this manual	9
Important safety information	9
Important information about replacing RoHS compliant FRUs	9
Chapter 2. Safety information	11
General safety	11
Electrical safety	11
Voltage-selection switch	13
Safety inspection guide	13
Handling electrostatic discharge-sensitive devices	14
Grounding requirements	14
Safety notices (multi-lingual translations)	14
Chapter 3. General information	37
Online Books folder	37
Lenovo ThinkVantage Tools	37
SimpleTap	38
Lenovo Solution Center	38
ThinkVantage Productivity Center	38
Access Help	38
Additional information resources	39
Specifications	40
For machine types: 3063, 3231, 3285, 4084, 4085, 4086, 4087, 6138, 6209, 6239, 6302, 7188, 7244, 7347, 7355, 7358, 7373, 7484, 7571, 7628, 7635, 7639, 8494, 8854, 9728, 9960, and 9965.	40
For machine types: 3379, 4083, 4088, 4099, 4138, 5897, 6137, 6234, 6258, 6303, 7174, 7220, 7346, 7354, 7357, 7360, 7483, 7582, 7627, 7630, 7638, 8910, and 9964.	40
Chapter 4. General checkout	43
Problem determination tips	44
Chapter 5. Diagnostic programs	45
Lenovo ThinkVantage Toolbox	45
Lenovo Solution Center	45
Lenovo System Toolbox	46
PC-Doctor for Rescue and Recovery	46
PC-Doctor for DOS	46
Creating a diagnostic disc	47
Running the diagnostic program from the diagnostic disc	47
Navigating through the diagnostic programs	47
Running tests	47
Viewing the test log	49
Chapter 6. Using the Setup Utility	51
Starting the Setup Utility program	51
Viewing and changing settings	51
Using passwords	51
Password considerations	51
Power-On Password	52
Administrator Password	52
Hard Disk User Password	52
Setting, changing, and deleting a password	52
Enabling or disabling a device	52
Selecting a startup device	53
Selecting a temporary startup device	53
Selecting or changing the startup device sequence	53
Exiting from the Setup Utility program	53
Chapter 7. Symptom-to-FRU index	55
Hard disk drive boot error	55
Power Supply Problems	55
Diagnostic error codes	56
Beep symptoms	73
POST error codes	74
Miscellaneous error messages	75
Undetermined problems	77
Chapter 8. Replacing FRUs (Machine Types: 3063, 3231, 3285, 4084, 4085, 4086, 4087, 6138, 6209, 6239, 6302, 7188, 7244, 7347, 7355, 7358, 7373, 7484, 7571, 7628, 7635, 7639, 8494, 8854, 9728, 9960, and 9965.)	79
Locating connectors on the front of the computer	79
Locating connectors on the rear of the computer	80
Removing the computer cover	81
Locating components	83
Locating parts on the system board	84
Removing and reinstalling the front bezel	85
Replacing a memory module	86
Replacing the power supply	87
Replacing the heat sink and fan assembly	88
Replacing the microprocessor	89
Replacing the system board	92
Replacing the battery	94
Replacing an adapter card	95
Replacing the primary hard disk drive	97
Replacing the secondary hard disk drive	100
Replacing the optical drive	102
Replacing the diskette drive	103
Replacing the front fan assembly	104
Replacing the rear fan assembly	106
Replacing the front audio and USB assembly	108
Replacing the internal speaker	109
Completing the FRU replacement	111
Chapter 9. Replacing FRUs (Machine Types: 3379, 4083, 4088, 4099, 4138, 5897, 6137, 6234, 6258, 6303, 7174, 7220, 7346, 7354, 7357, 7360, 7483, 7582, 7627, 7630, 7638, 8910, and 9964.)	113
Locating connectors on the front of the computer	113
Locating connectors on the rear of the computer	114
Opening the computer cover	115
Accessing the system board components and drives	116
Locating components	117
Locating parts on the system board	118
Replacing the battery	118
Replacing a memory module	120
Replacing an adapter card	121
Replacing the power supply	123
Replacing the heat sink and fan assembly	125
Replacing the microprocessor	126
Replacing the system board	129
Replacing the hard disk drive	130
Replacing the optical drive	132
Replacing the card reader	134
Replacing the internal speaker	135
Replacing the front audio and USB assembly	138
Completing the FRU replacement	139
Chapter 10. FRU lists	141
Overall: MT 3063, 3231, 3285, 4084, 4085, 4086, 4087, 6138, 6209, 6239, 6302, 7188, 7244, 7347, 7355, 7358, 7373, 7484, 7571, 7628, 7635, 7639, 8494, 8854, 9728, 9960, and 9965.	141
Mechanical FRUs	176
Keyboard and Mouse	188
Adapters and miscellaneous FRUs	222
Power Cords	229
Recovery discs	242
Windows XP Professional Recovery CD	242
Windows Vista 32 Home Basic Recovery CD	253
Windows Vista Home Basic 32 with IE9 Recovery CD	265
Windows Vista Business 32 Recovery CD	276
Windows Vista Business 32 SP2 with IE9 Recovery CD	287
Windows Vista Business 64 Recovery CD	299
Windows 7 Home Basic 32 Recovery CD	302
Windows 7 Home Basic 32 SP1 Recovery CD	306
Windows 7 Home Premium 32 Recovery CD	309
Windows 7 Home Premium 32 SP1 Recovery CD	316
Windows 7 Professional 32 Recovery CD	322
Windows 7 Professional 32 SP1 Recovery CD	333
Windows 7 Professional 64 Recovery CD	344
Windows 7 Professional 64 SP1 Recovery CD	353
Windows 7 Ultimate 32 SP1 Recovery CD	362
Windows 7 Ultimate 64 SP1 Recovery CD	363
Windows Vista Ultimate 32 Recovery CD	364
Windows Vista Starter SP2 Recovery CD	366
Windows 7 Starter 32 Recovery CD	366
Overall: MT 3379, 4083, 4088, 4099, 4138, 5897, 6137, 6234, 6258, 6303, 7174, 7220, 7346, 7354, 7357, 7360, 7483, 7582, 7627, 7630, 7638, 8910, and 9964.	367
Mechanical FRUs	394
Keyboard and Mouse	406
Adapters and miscellaneous FRUs	436
Power Cords	441
Recovery discs	453
Windows XP Professional Recovery CD	453
Windows Vista Home Basic 32 Recovery CD	463
Windows Vista Home Basic 32 SP2 with IE9 Recovery CD	473
Windows Vista Business 32 Recovery CD	483
Windows Vista Business 32 SP2 with IE 9 Recovery CD	493
Windows Vista Business 64 Recovery CD	503
Windows Vista Ultimate 32 Recovery CD	506
Windows Vista Starter 32 SP2 Recovery CD	509
Windows 7 Home Basic 32 Recovery CD	509
Windows 7 Home Basic 32 SP1 Recovery CD	513
Windows 7 Home Premium 32 Recovery CD	516
Windows 7 Home Premium 32 SP1 Recovery CD	522
Windows 7 Professional 32 Recovery CD	527
Windows 7 Professional 32 SP1 Recovery CD	537
Windows 7 Professional 64 Recovery CD	547
Windows 7 Professional 64 SP1 Recovery CD	555
Windows 7 Ultimate 32 Recovery CD	563
Windows 7 Ultimate 64 Recovery CD	564
Windows 7 Starter 32 SP1 Recovery CD	564
Chapter 11. Additional service information	567
Security features	567
Hardware controlled passwords	567
Operating system password	567
Vital Product Data	567
Secure Managed Client	567
BIOS levels	567
Updating (flashing) BIOS from a disc	568
Recovering from a POST/BIOS update failure	568
Power management	569
Automatic configuration and power interface (ACPI) BIOS	569
Automatic Power-On features	569
Appendix A. Notices	571
Television output notice	572

Match case Limit results 1 per page

Removing and reinstalling the front bezel

Attention

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

in the

ThinkCentre Safety and Warranty Guide

that came with your computer. To obtain a copy of the

ThinkCentre

Safety and Warranty Guide

, go to:

http://www.lenovo.com/support

This section provides instructions on how to remove and reinstall the front bezel.

To remove and reinstall the front bezel:

1. Remove the computer cover. See “Removing the computer cover” on page 73.

2. Remove the front bezel by releasing the three plastic tabs on the left side and pivoting the front

bezel outward. Carefully set the front bezel to the side without disconnecting the power switch and

LED assembly cable.

Figure 6. Removing the front bezel

3. To reinstall the front bezel, align the plastic tabs on the right side of the front bezel with the corresponding

holes in the chassis, and then pivot the front bezel inward until it snaps into position on the left side.

4. Go to “Completing the FRU replacement” on page 103.

Chapter 8

Replacing FRUs (Machine Types: 3063, 3231, 3285, 4084, 4085, 4086, 4087, 6138, 6209, 6239, 6302, 7188, 7244,

7347, 7355, 7358, 7373, 7484, 7571, 7628, 7635, 7639, 8494, 8854, 9728, 9960, and 9965.)