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Lenovo
T420
Manual De Usuario
Lenovo T420 Manual De Usuario
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Chapter 10. Troubleshooting
computer problems . . . . . . . . .
201
Diagnosing problems . . . . . . . . . . . .
201
Troubleshooting . . . . . . . . . . . . . .
202
Computer stops responding
. . . . . . .
202
Spills on the keyboard . . . . . . . . . .
203
Error messages
. . . . . . . . . . . .
203
Errors without messages . . . . . . . . .
205
Beep errors . . . . . . . . . . . . . .
206
Memory problems . . . . . . . . . . .
207
Modem and networking . . . . . . . . .
207
Keyboard and other pointing devices . . . .
214
Display and multimedia devices . . . . . .
215
Fingerprint reader problems. . . . . . . .
225
Battery and power . . . . . . . . . . .
225
Drives and other storage devices
. . . . .
229
Software problems . . . . . . . . . . .
231
Ports and connectors . . . . . . . . . .
231
Universal Serial Bus problems . . . . . . .
232
A docking station or port replicator
problem . . . . . . . . . . . . . . .
232
Chapter 11. Getting support . . . .
233
Before you contact Lenovo . . . . . . . . . .
233
Register your computer . . . . . . . . .
233
Download system updates . . . . . . . .
233
Record information . . . . . . . . . . .
233
Getting help and service . . . . . . . . . . .
234
Using diagnostic programs . . . . . . . .
234
Lenovo Support Web site. . . . . . . . .
234
Calling Lenovo . . . . . . . . . . . . .
234
Purchasing additional services . . . . . . . .
235
Appendix A. Regulatory
information . . . . . . . . . . . . .
237
Wireless related information . . . . . . . . .
237
Location of the UltraConnect wireless
antennas . . . . . . . . . . . . . . .
238
Locating wireless regulatory notices . . . .
240
Export classification notice . . . . . . . . . .
241
Electronic emission notices. . . . . . . . . .
241
Federal Communications Commission
Declaration of Conformity
. . . . . . . .
241
Industry Canada Class B emission compliance
statement . . . . . . . . . . . . . . .
241
European Union - Compliance to the
Electromagnetic Compatibility Directive . . .
241
German Class B compliance statement . . .
242
Korea Class B compliance statement . . . .
242
Japanese VCCI Class B statement . . . . .
243
Japan compliance statement for products
which connect to the power mains with
rated current less than or equal to 20 A per
phase . . . . . . . . . . . . . . . .
243
Lenovo product service information for
Taiwan . . . . . . . . . . . . . . . .
243
Additional regulatory information
. . . . . . .
243
Appendix B. WEEE and recycling
statements . . . . . . . . . . . . .
245
Important WEEE Information . . . . . . . . .
245
Battery recycling information for Japan . . . . .
245
Battery recycling information for Brazil . . . . .
246
Battery recycling information for Taiwan . . . . .
246
Battery recycling information for European
Union . . . . . . . . . . . . . . . . . .
247
Battery recycling information for United States and
Canada . . . . . . . . . . . . . . . . .
247
Appendix C. Notices. . . . . . . . .
249
Trademarks . . . . . . . . . . . . . . . .
250
Appendix D. Restriction of Hazardous
Substances Directive (RoHS) . . . .
251
China RoHS. . . . . . . . . . . . . . . .
251
Turkish RoHS . . . . . . . . . . . . . . .
251
Ukraine RoHS . . . . . . . . . . . . . . .
251
India RoHS . . . . . . . . . . . . . . . .
252
© Copyright Lenovo 2011
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