Lenovo 10A4 Hardware Maintenance Manual page 5

Replacing the front audio and USB assembly . . . 206
Replacing the internal speaker . . . . . . . . . 208
Replacing the thermal sensor . . . . . . . . . 210
Replacing the Wi-Fi units . . . . . . . . . . . 212
Removing the Wi-Fi adapter card . . . . . . 212
Removing the Wi-Fi card module . . . . . . 214
Installing the Wi-Fi units . . . . . . . . . . 215
Installing or removing the rear Wi-Fi antenna . . . 217
Installing the rear Wi-Fi antenna. . . . . . . 217
Removing the rear Wi-Fi antenna . . . . . . 219
Installing or removing the front Wi-Fi antenna . . . 220
Installing the front Wi-Fi antenna . . . . . . 220
Removing the rear Wi-Fi antenna . . . . . . 222
Replacing the keyboard or mouse. . . . . . . . 223
Completing the parts replacement . . . . . . . 224
Obtaining device drivers. . . . . . . . . . 225
Chapter 10. Replacing FRUs
(machine types: 10A4, 10A5, 10AA, 10AB,
10DF, 10DG, 10DH, 10DJ, 10E8, 10E9,
10EA, and 10EB) . . . . . . . . . . . . 227
Removing the computer cover . . . . . . . . . 227
Installing external options . . . . . . . . . . . 228
Installing or removing the ac power adapter . . . . 228
Installing or removing the vertical stand . . . . . 230
Installing or removing the VESA mount bracket . . 232
Installing or removing the ac power adapter
bracket . . . . . . . . . . . . . . . . . . 234
Replacing the optical drive . . . . . . . . . . 235
Installing or removing the hard disk drive
assembly . . . . . . . . . . . . . . . . . 241
Replacing the secondary hard disk drive . . . . . 243
Installing or removing the I/O box . . . . . . . . 248
Installing or replacing a memory module . . . . . 250
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Replacing the battery . . . . . . . . . . . . 251
Replacing the power switch board . . . . . . . 252
Replacing the Wi-Fi card module . . . . . . . . 254
Installing or removing the front Wi-Fi antenna . . . 255
Installing or removing the rear Wi-Fi antenna . . . 257
Replacing the internal speaker . . . . . . . . . 258
Replacing the cover presence switch . . . . . . 261
Replacing the system fan . . . . . . . . . . . 263
Replacing the thermal module . . . . . . . . . 264
Replacing the microprocessor . . . . . . . . . 266
Replacing the system board . . . . . . . . . . 268
Replacing the keyboard or mouse. . . . . . . . 271
Completing the parts replacement . . . . . . . 272
Obtaining device drivers. . . . . . . . . . 274
Chapter 11. Additional service
information . . . . . . . . . . . . . . . 275
Security features . . . . . . . . . . . . . . 275
Hardware controlled passwords . . . . . . 275
Operating system password . . . . . . . . 275
Vital product data . . . . . . . . . . . . 275
BIOS levels . . . . . . . . . . . . . . . . 275
Flash update procedures . . . . . . . . . . . 275
Updating the BIOS . . . . . . . . . . . . 276
Recovering from a POST/BIOS update
failure . . . . . . . . . . . . . . . . . 276
Power management . . . . . . . . . . . . . 276
Advanced configuration and power interface
(ACPI) BIOS . . . . . . . . . . . . . . 276
Automatic Power-on features
Appendix A. Notices . . . . . . . . . . 279
Index . . . . . . . . . . . . . . . . . . 281
. . . . . . . 277
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