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Replacing the optical drive . . . . . . . . . . 82
Removing and reinstalling the system board
shield . . . . . . . . . . . . . . . . . . 83
Replacing the rear I/O assembly. . . . . . . . 84
Removing the VESA mount bracket . . . . . . 86
Replacing the power supply . . . . . . . . . 87
Replacing the microprocessor fan . . . . . . . 88
Replacing the heat sink assembly . . . . . . . 90
Replacing the microprocessor . . . . . . . . 91
Replacing the card reader . . . . . . . . . . 94
Replacing the battery . . . . . . . . . . . . 95
Replacing the converter board . . . . . . . . 96
Installing or replacing a memory module . . . . 97
Replacing the internal speakers . . . . . . . . 99
Replacing the integrated camera . . . . . . . 100
Replacing the system board . . . . . . . . . 101
Replacing the LCD panel. . . . . . . . . . . 103
Replacing the Wi-Fi card. . . . . . . . . . . 107
Completing the parts replacement . . . . . . . 108
Chapter 10. Additional service
information . . . . . . . . . . . . . 111
Security features . . . . . . . . . . . . . . 111
Hardware controlled passwords . . . . . . 111
Operating system password . . . . . . . 111
Vital product data. . . . . . . . . . . . 111
BIOS levels . . . . . . . . . . . . . . . . 111
Flash update procedures . . . . . . . . . . 111
Updating (ashing) the BIOS from a disc. . . 112
Updating (ashing) the BIOS from your
operating system . . . . . . . . . . . . 113
Recovering from a POST/BIOS update
failure . . . . . . . . . . . . . . . . 113
Power management . . . . . . . . . . . . 114
Automatic conguration and power interface
(ACPI) BIOS . . . . . . . . . . . . . . 114
Automatic Power-on features . . . . . . . 114
Appendix A. Notices. . . . . . . . . 115
Television output notice . . . . . . . . . . . 116
European conformance CE mark . . . . . . . 116
Trademarks . . . . . . . . . . . . . . . . 116
Index. . . . . . . . . . . . . . . . . 117
ii ThinkCentre E73z Hardware Maintenance Manual