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9426, 9486, 9624, 9707, 9787, 9804,
9945). . . . . . . . . . . . . . . . . . 93
Rear connectors . . . . . . . . . . . . . . 93
Removing the cover . . . . . . . . . . . . 94
Locations. . . . . . . . . . . . . . . . . 94
Locating parts on the system board . . . . . . 95
Accessing system board components and drives . 96
Replacing a memory module . . . . . . . . . 97
Replacing the CMOS battery . . . . . . . . . 98
Replacing the power supply . . . . . . . . . 99
Replacing the system board . . . . . . . . . 100
Replacing the microprocessor . . . . . . . . 104
Replacing the hard disk drive . . . . . . . . . 106
Replacing an optical drive . . . . . . . . . . 108
Replacing the diskette drive . . . . . . . . . 109
Replacing the power switch/LED assembly . . . 109
Replacing the front panel card . . . . . . . . 110
Replacing the system fan assembly . . . . . . 111
Replacing a PCI adapter card . . . . . . . . . 112
Completing the FRU replacement . . . . . . . 113
Chapter 10. FRU lists . . . . . . . . 115
Machine Type 3656 . . . . . . . . . . . . . 115
Machine Type 3658 . . . . . . . . . . . . . 128
Machine Type 7057 . . . . . . . . . . . . . 141
Machine Type 7061 . . . . . . . . . . . . . 155
Machine Type 7062 . . . . . . . . . . . . . 168
Machine Type 7090 . . . . . . . . . . . . . 182
Machine Type 7092 . . . . . . . . . . . . . 195
Machine Type 9342 . . . . . . . . . . . . . 208
Machine Type 9344 . . . . . . . . . . . . . 221
Machine Type 9353 . . . . . . . . . . . . . 234
Machine Type 9354 . . . . . . . . . . . . . 247
Machine Type 9421 . . . . . . . . . . . . . 260
Machine Type 9426 . . . . . . . . . . . . . 273
Machine Type 9485 . . . . . . . . . . . . . 286
Machine Type 9486 . . . . . . . . . . . . . 302
Machine Type 9623 . . . . . . . . . . . . . 318
Machine Type 9624 . . . . . . . . . . . . . 331
Machine Type 9625 . . . . . . . . . . . . . 344
Machine Type 9705 . . . . . . . . . . . . . 358
Machine Type 9707 . . . . . . . . . . . . . 371
Machine Type 9795 . . . . . . . . . . . . . 385
Machine Type 9804 . . . . . . . . . . . . . 398
Machine Type 9935 . . . . . . . . . . . . . 411
Machine Type 9945 . . . . . . . . . . . . . 425
Machine Type 9946 . . . . . . . . . . . . . 439
Machine Type 9953 . . . . . . . . . . . . . 452
Chapter 11. Additional Service
Information . . . . . . . . . . . . . 467
Security features . . . . . . . . . . . . . . 467
Hardware controlled Passwords . . . . . . 467
Operating system password . . . . . . . 467
Vital product data. . . . . . . . . . . . 467
BIOS levels . . . . . . . . . . . . . . . . 467
Flash update procedures . . . . . . . . . . 467
Updating (ashing) BIOS from a diskette. . . 468
Recovering from a POST/BIOS update failure . . 468
Power management . . . . . . . . . . . . 468
Automatic conguration and power interface
(ACPI) BIOS . . . . . . . . . . . . . . 468
Automatic Power-On features . . . . . . . 468
Appendix A. Notices . . . . . . . . 471
Television output notice . . . . . . . . . . . 472
Trademarks . . . . . . . . . . . . . . . . 472
vi ThinkCentre Hardware Maintenance Manual