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Lenovo ThinkCentre Edge 71 Hardware Maintenance Manual (HMM) (May 2012) - Thin - Page 134

Replacing the microprocessor, does not get in contact with anything.

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Figure 65. Installing the heat sink fan duct 12. To complete the installation or replacement, go to "Completing the parts replacement" on page 139. Replacing the microprocessor Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre User Guide. To obtain a copy of the ThinkCentre User Guide, go to: http://www.lenovo.com/ThinkCentreUserGuides This section provides instructions on how to replace the microprocessor. CAUTION: The heat sink and microprocessor might be very hot. Turn off the computer and wait three to five minutes to let the computer cool before removing the computer cover. To replace the microprocessor, 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 109. 3. Remove the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 127. Note: Place the heat sink and fan assembly on its side so that the thermal grease on the bottom of it does not get in contact with anything. 4. Locate the system board and disconnect all cables connected to the system board. See "Locating parts on the system board" on page 107. 130 ThinkCentre Hardware Maintenance Manual

Section	Page
Chapter 1. About this manual	5
Important safety information	5
Chapter 2. Safety information	7
General safety	7
Electrical safety	7
Voltage-selection switch	9
Safety inspection guide	9
Handling electrostatic discharge-sensitive devices	10
Grounding requirements	10
Safety notices (multi-lingual translations)	10
Chapter 3. General information	37
Lenovo Welcome	37
Lenovo ThinkVantage Tools	37
Lenovo Solution Center	37
SimpleTap	37
Additional information resources	38
Specifications	38
For machine types: 1577, 1579, and 1607	38
For machine types: 1578, 1583, and 1652	39
Chapter 4. General checkout	41
Problem determination tips	41
Chapter 5. Diagnostic programs	43
Lenovo ThinkVantage Toolbox	43
Lenovo Solution Center	43
PC-Doctor for DOS	44
Creating a diagnostic disc	44
Running the diagnostic program from the diagnostic disc	44
Navigating through the diagnostic programs	44
Running tests	44
Viewing the test log	46
Chapter 6. Using the Setup Utility program	47
Starting the Setup Utility program	47
Viewing and changing settings	47
Using passwords	47
Password considerations	48
Power-On Password	48
Administrator Password	48
Hard Disk Password	48
Setting, changing, and deleting a password	48
Erasing lost or forgotten passwords (clearing CMOS)	49
Enabling or disabling a device	49
Selecting a startup device	50
Selecting a temporary startup device	50
Selecting or changing the startup device sequence	50
Enabling ErP compliance mode	50
Exiting the Setup Utility program	51
Chapter 7. Symptom-to-FRU index	53
Hard disk drive boot error	53
Power supply problems	53
Diagnostic error codes	53
Beep symptoms	71
POST error codes	71
Miscellaneous error messages	73
Undetermined problems	75
Chapter 8. Replacing FRUs (Machine Types: 1577, 1579, and 1607)	77
Locations	77
Locating connectors, controls, and indicators on the front of yo	78
Locating connectors on the rear of your computer	79
Locating components	80
Locating parts on the system board	81
Locating internal drives	82
Handling static-sensitive devices	82
Installing or replacing hardware	83
Removing the computer cover	83
Removing and reinstalling the front bezel	84
Installing or replacing a PCI card	86
Replacing the battery	89
Installing or replacing a memory module	90
Replacing the optical drive	92
Replacing the heat sink and fan assembly	94
Replacing the power supply assembly	96
Replacing the microprocessor	97
Replacing the system board	100
Replacing the primary hard disk drive	103
Replacing the front audio and USB assembly	104
Completing the parts replacement	105
Chapter 9. Replacing FRUs (Machine Types: 1578, 1583, and 1652)	107
Locations	107
Locating connectors, controls, and indicators on the front of yo	108
Locating connectors on the rear of your computer	109
Locating components	110
Locating parts on the system board	111
Locating internal drives	112
Handling static-sensitive devices	112
Installing or replacing hardware	113
Removing the computer cover	113
Removing and reinstalling the front bezel	114
Accessing the system board components and drives	115
Installing or replacing a PCI card	117
Installing or replacing a memory module	119
Replacing the battery	120
Replacing the hard disk drive	121
Replacing the optical drive	123
Replacing the power supply assembly	127
Replacing the heat sink and fan assembly	131
Replacing the microprocessor	134
Replacing the system board	137
Replacing the system fan assembly	140
Replacing the front audio and USB assembly	141
Replacing the keyboard or mouse	142
Completing the parts replacement	143
Chapter 10. FRU lists	145
Overall: 1577, 1579, and 1607	145
Mechanical FRUs	152
Keyboard and Mouse	154
Adapters and miscellaneous FRUs	167
Power Cords	168
Recovery discs	173
Windows 7 Starter Recovery CD	173
Windows 7 Home Basic 32 Recovery CD	174
Windows 7 Home Premium 32 Recovery CD	175
Windows 7 Home Premium 64 Recovery CD	176
Windows 7 Professional 32 Recovery CD	178
Windows 7 Professional 64 Recovery CD	180
Windows 7 Ultimate 32 Recovery CD	183
Windows 7 Ultimate 64 Recovery CD	183
Overall: MT 1578, 1583, and 1652	183
Mechanical FRU	190
Keyboard and Mouse	192
Adapters and miscellaneous FRUs	205
Power Cords	205
Recovery discs	210
Windows 7 Starter Recovery CD	210
Windows 7 Home Basic 32 Recovery CD	211
Windows 7 Home Premium 32 Recovery CD	212
Windows 7 Home Premium 64 Recovery CD	213
Windows 7 Professional 32 Recovery CD	215
Windows 7 Professional 64 Recovery CD	217
Windows 7 Ultimate 32 Recovery CD	220
Windows 7 Ultimate 64 Recovery CD	220
Chapter 11. Additional service information	221
Security features	221
Hardware-controlled passwords	221
Operating system password	221
Vital Product Data	221
BIOS levels	221
Updating (flashing) the BIOS from a disc	221
Updating (flashing) the BIOS from your operating system	222
Recovering from a POST and BIOS update failure	222
Power management	223
Advanced Configuration and Power Interface (ACPI) BIOS	223
Automatic Power-On features	223
Appendix A. Notices	225
Television output notice	226
European conformance CE mark	226
Trademarks	226

Match case Limit results 1 per page

Figure 65. Installing the heat sink fan duct

12. To complete the installation or replacement, go to “Completing the parts replacement” on page 139.

Replacing the microprocessor

Attention:

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

in the

ThinkCentre User Guide

. To obtain a copy of the

ThinkCentre User Guide

, go to:

http://www.lenovo.com/ThinkCentreUserGuides

This section provides instructions on how to replace the microprocessor.

CAUTION:

The heat sink and microprocessor might be very hot. Turn off the computer and wait three to ﬁve

minutes to let the computer cool before removing the computer cover.

To replace the microprocessor, 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 109.

3. Remove the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 127.

Note:

Place the heat sink and fan assembly on its side so that the thermal grease on the bottom of it

does not get in contact with anything.

4. Locate the system board and disconnect all cables connected to the system board. See “Locating parts

on the system board” on page 107.

130

ThinkCentre Hardware Maintenance Manual