Lenovo ThinkCentre M91p 4524 Hardware Maintenance Manual page 6

Replacing the heat sink and fan assembly . .
Replacing the microprocessor . . . . . . .
Replacing the system board . . . . . . .
Replacing the primary hard disk drive . . . .
Replacing the secondary hard disk drive. . .
Replacing the front fan assembly
Replacing the rear fan assembly . . . . . .
Replacing the front audio and USB
assembly . . . . . . . . . . . . . . .
Replacing the internal speaker. . . . . . .
Completing the parts replacement . . . . .
Chapter 9. Replacing FRUs (Machine
Types: 4466, 4471, 4474, 4477, 4480,
4485, 4496, 4498, 4503, 4512, 4514,
4518, 4554, 7005, 7023, 7033, 7035,
7072, 7079, and 7177.). . . . . . . .
Locations. . . . . . . . . . . . . . . . .
Locating connectors, controls, and indicators
on the front of your computer . . . . . . .
Locating connectors on the rear of your
computer . . . . . . . . . . . . . . .
Locating components . . . . . . . . . .
Locating parts on the system board . . . .
Locating internal drives . . . . . . . . .
Handling static-sensitive devices . . . . . . .
Installing or replacing hardware . . . . . . . .
Opening the computer cover . . . . . . .
Removing and reinstalling the front bezel . .
Accessing the system board components and
drives . . . . . . . . . . . . . . . .
Installing or replacing a memory module . . .
Installing or replacing a PCI card . . . . . .
Installing or replacing the card reader . . . .
Replacing the battery . . . . . . . . . .
Replacing the hard disk drive . . . . . . .
Replacing the optical drive . . . . . . . .
Replacing the heat sink and fan assembly . .
Replacing the power supply assembly . . .
Replacing the microprocessor . . . . . . .
Replacing the system board . . . . . . .
Replacing the system fan assembly
Replacing the internal speaker. . . . . . .
Replacing the front audio and USB
assembly . . . . . . . . . . . . . . .
Completing the parts replacement . . . . .
Chapter 10. FRU lists . . . . . . . .
Overall: MT 4468, 4473, 4476, 4479, 4495, 4497,
4499, 4504, 4513, 4517, 4524, 7021, 7032, 7034,
7049, 7052, 7053, 7073, 7136, and 7178 . . . .
Mechanical FRUs . . . . . . . . . . . . .
iv
ThinkCentre Hardware Maintenance Manual
95 Keyboard and Mouse . . . . . . . . . . . .
97 Adapters and miscellaneous FRUs . . . . . . .
100 Power Cords . . . . . . . . . . . . . . .
103 Recovery discs . . . . . . . . . . . . . .
105
. . . . . 107
108
110
111
113
115
Overall: MT 4466, 4471, 4474, 4477, 4480, 4485,
115
4496, 4498, 4503, 4512, 4514, 4518, 4554, 7005,
7023, 7033, 7035, 7072, 7079, and 7177 . . . .
116
Mechanical FRUs . . . . . . . . . . . . .
Keyboard and Mouse . . . . . . . . . . . .
117
Adapters and miscellaneous FRUs . . . . . . .
118
Power Cords . . . . . . . . . . . . . . .
119
Recovery discs . . . . . . . . . . . . . .
120
120
121
121
122
124
125
126
128
133
134
137
139
Chapter 11. Additional service
142
information . . . . . . . . . . . . .
147
Security features . . . . . . . . . . . . . .
150
. . . . 153
155
BIOS levels . . . . . . . . . . . . . . . .
159
Updating (flashing) the BIOS from a disc . . . .
160
Updating (flashing) the BIOS from your operating
163
system . . . . . . . . . . . . . . . . . .
Recovering from a POST and BIOS update
failure . . . . . . . . . . . . . . . . . .
163
Power management
180
Windows 7 Professional 32 Recovery CD . .
Windows 7 Home Basic 32 Recovery CD . .
Windows 7 Home Premium 32 Recovery
CD . . . . . . . . . . . . . . . . .
Windows 7 Home Premium 64 Recovery
CD . . . . . . . . . . . . . . . . .
Windows 7 Professional 64 Recovery CD . .
Windows XP Professional 32 Recovery CD . .
Windows XP Professionally Generic 32
Recovery CD . . . . . . . . . . . . .
Windows Vista Business 32 Recovery CD . .
Windows Vista Home Basic 32 Recovery
CD . . . . . . . . . . . . . . . . .
Windows 7 Professional 32 Recovery CD . .
Windows 7 Home Basic 32 Recovery CD . .
Windows 7 Home Premium 32 Recovery
CD . . . . . . . . . . . . . . . . .
Windows 7 Home Premium 64 Recovery
CD . . . . . . . . . . . . . . . . .
Windows 7 Professional 64 Recovery CD . .
Windows XP Professional 32 Recovery CD . .
Windows XP Professionally Generic 32
Recovery CD . . . . . . . . . . . . .
Windows Vista Business 32 Recovery CD . .
Windows Vista Home Basic 32 Recovery
CD . . . . . . . . . . . . . . . . .
Hardware-controlled passwords . . . . . .
Operating system password . . . . . . .
Vital Product Data . . . . . . . . . . .
. . . . . . . . . . . .
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253
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265
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299
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455
455
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