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Replacing the system board, Removing the microprocessor

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Figure 16. Removing the microprocessor 7. Make sure that the small handle is in the raised position and the microprocessor retainer is fully open. 8. Remove the protective cover 2 that protects the gold contacts on the new microprocessor 1 . 9. Hold the new microprocessor and align the notches on it with the tabs in the microprocessor socket, or align the small triangle on one corner with the corresponding beveled corner of the microprocessor socket. 10. Lower the new microprocessor straight down into the microprocessor socket on the system board. 11. Close the microprocessor retainer and lock it into position with the small handle to secure the new microprocessor in the socket. 12. Reinstall the heat sink on the system board. See "Replacing the heat sink" on page 77. 13. Reinstall any other parts or reconnect any other cables you removed. 14. Go to "Completing the FRU replacement" on page 89. Replacing the system board 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 80 ThinkCentre Hardware Maintenance Manual

Section	Page
Chapter 1. About this manual	7
Important safety information	7
Important information about replacing RoHS compliant FRUs	7
Chapter 2. Safety information	9
General safety	9
Electrical safety	9
Voltage-selection switch	11
Safety inspection guide	11
Handling electrostatic discharge-sensitive devices	12
Grounding requirements	12
Safety notices (multi-lingual translations)	12
Chapter 3. General information	35
Online Books folder	35
Lenovo ThinkVantage Tools	35
Lenovo Solution Center	36
SimpleTap	36
ThinkVantage Productivity Center	36
Access Help	36
Additional information resources	37
Specifications	37
Chapter 4. General checkout	39
Checking for power problems	39
Problem determination tips	40
Chapter 5. Diagnostic programs	43
Lenovo ThinkVantage Toolbox	43
Lenovo Solution Center	43
Lenovo System Toolbox	44
PC-Doctor for Rescue and Recovery	44
PC-Doctor for DOS	44
Creating a diagnostic disc	45
Running the diagnostic program from the diagnostic disc	45
Navigating through the diagnostics programs	45
Running tests	45
Viewing the test log	47
Chapter 6. Using the Setup Utility program	49
Starting the Setup Utility program	49
Viewing and changing settings	49
Using passwords	49
Password considerations	49
Power-On Password	50
Administrator Password	50
Hard Disk User Password	50
Setting, changing, and deleting a password	50
Enabling or disabling a device	50
Selecting a startup device	51
Selecting a temporary startup device	51
Selecting or changing the startup device sequence	51
Exiting the Setup Utility program	51
Chapter 7. Symptom-to-FRU index	53
Hard disk drive boot error	53
Diagnostic error codes	53
Beep symptoms	69
POST error codes	69
Miscellaneous error messages	70
Undetermined problems	72
Chapter 8. Replacing FRUs	73
Locations	73
Locating connectors on the front of the computer	73
Locating connectors on the rear of the computer	74
Locating components	75
Locating parts on the system board	76
Opening the computer cover	77
Replacing the battery	78
Replacing a memory module	79
Replacing the adapter card	80
Replacing the front audio and USB assembly	82
Replacing the heat sink	83
Replacing the microprocessor	84
Replacing the system board	86
Replacing the system fan	89
Replacing the hard disk drive	91
Replacing the optical drive	92
Replacing the internal speaker	94
Completing the FRU replacement	95
Chapter 9. FRU lists	97
Overall: MT 6136, 6139, 7187, 7345, 7348, 7356, 7359, 7479, 7626, 7629, 7637, 8338, 8820, and 9961	97
Mechanical FRUs	119
Keyboard and Mouse	129
Adapters and miscellaneous FRUs	159
Power Cords	162
Recovery discs	168
Windows XP Professional Recovery CD	168
Windows Vista 32 Home Basic Recovery CD	178
Windows Vista Home Basic 32 SP2 Recovery CD	188
Windows Vista Business 32 Recovery CD	198
Windows Vista Business 32 SP2 Recovery CD	208
Windows Vista Business 64 Recovery CD	218
Windows Vista Ultimate 32 Recovery CD	221
Windows Vista Starter SP2 Recovery CD	224
Windows 7 Home Basic 32 Recovery CD	224
Windows 7 Home Basic 32 SP1 Recovery CD	227
Windows 7 Home Premium 32 Recovery CD	231
Windows 7 Home Premium 32 SP1 Recovery CD	236
Windows 7 Professional 32 Recovery CD	242
Windows 7 Professional 32 SP1 Recovery CD	252
Windows 7 Professional 64 Recovery CD	261
Windows 7 Professional 64 SP1 Recovery CD	270
Windows 7 Ultimate 32 SP1 Recovery CD	278
Windows 7 Ultimate 64 SP1 Recovery CD	279
Windows 7 Starter 32 SP1 Recovery CD	279
Chapter 10. Additional service information	281
Security features	281
Hardware controlled passwords	281
Operating system password	281
Vital Product Data	281
Secure Managed Client	281
BIOS levels	281
Updating (flashing) BIOS from a disc	282
Recovering from a POST/BIOS update failure	282
Power management	283
Automatic configuration and power interface (ACPI) BIOS	283
Automatic Power-On features	283
Appendix A. Notices	285
Television output notice	286
Trademarks	286

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Figure 16. Removing the microprocessor

7. Make sure that the small handle is in the raised position and the microprocessor retainer is fully open.

8. Remove the protective cover

that protects the gold contacts on the new microprocessor

9. Hold the new microprocessor and align the notches on it with the tabs in the microprocessor socket, or

align the small triangle on one corner with the corresponding beveled corner of the microprocessor

socket.

10. Lower the new microprocessor straight down into the microprocessor socket on the system board.

11. Close the microprocessor retainer and lock it into position with the small handle to secure the new

microprocessor in the socket.

12. Reinstall the heat sink on the system board. See “Replacing the heat sink” on page 77.

13. Reinstall any other parts or reconnect any other cables you removed.

14. Go to “Completing the FRU replacement” on page 89.

Replacing the system board

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

ThinkCentre Hardware Maintenance Manual