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Lenovo ThinkCentre Edge 71 Hardware Maintenance Manual (HMM) (May 2012) - Thin - Page 129

Make sure that the new power supply assembly is the correct replacement., At the rear of the computer

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6. At the rear of the computer, remove the three screws that secure the power supply assembly. Press the power supply clip 1 downward to release the power supply assembly and then slide the power supply assembly to the front of the computer. Lift the power supply assembly out of the computer. Figure 60. Removing the power supply assembly 7. Make sure that the new power supply assembly is the correct replacement. Chapter 9. Replacing FRUs (Machine Types: 1578, 1583, and 1652) 125

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