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Toshiba satellite a20 series Benutzerhandbuch

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Appendix I   Reliability 
Appendices 
Appendix I  
 
Appendix I 
Reliability 
The following table shows MTBF (Mean Time Between Failures) for each component. 
 
 
 
Table I-1  MTBF 
 
Component Time 
(hours) 
LCD 50,000 
Keyboard 40,000 
HDD 300,000 
USB FDD 
43,800 
DVD-RAM drive 
60,000 
CD-RW/DVD-ROM drive 
60,000 
AC adaptor 
20,000 
 
 
Satellite A20 Maintenance Manual (960-444)
  
I-1