Contents 
About  this  manual  .  .  .  .  .  .  .  .  .  .  .1 
Introduction  .  .  .  .  .  .  .  .  .  .  .  .  .3 
Important  service  information  .  .  .  .  .  .  .  .  .3 
Strategy  for  replacing  FRUs  .  .  .  .  .  .  .  .  .3 
Strategy  for  replacing  a  hard  disk  drive  .  .  .  .  .4 
How  to  use  error  messages  .  .  .  .  .  .  .  .4 
Strategy  for  replacing  FRUs  for  CTO,  CMV,  and  GAV  4 
Product  definition  .  .  .  .  .  .  .  .  .  .  .4 
FRU  identification  for  CTO,  CMV,  and  GAV  products  5 
Important  information  about  replacing  RoHS  compliant 
FRUs  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .7 
Diskette  compatibility  matrix  .  .  .  .  .  .  .  .  .8 
Safety  notices:  multilingual  translations  .  .  .  .  .  .8 
Safety  information  .  .  .  .  .  .  .  .  .  .  .  .20 
General  safety  .  .  .  .  .  .  .  .  .  .  .  .20 
Electrical  safety  .  .  .  .  .  .  .  .  .  .  .21 
Safety  inspection  guide  .  .  .  .  .  .  .  .  .23 
Handling  devices  that  are  sensitive  to  electrostatic 
discharge  .  .  .  .  .  .  .  .  .  .  .  .24 
Grounding  requirements  .  .  .  .  .  .  .  .  .25 
Laser  compliance  statement  .  .  .  .  .  .  .  .  .26 
General  descriptions  .  .  .  .  .  .  .  .  .  .29 
Read  this  first  .  .  .  .  .  .  .  .  .  .  .  .  .29 
What  to  do  first  .  .  .  .  .  .  .  .  .  .  .29 
Related  service  information  .  .  .  .  .  .  .  .  .31 
Service  web  site  .  .  .  .  .  .  .  .  .  .  .31 
Restoring  the  preloaded  system  .  .  .  .  .  .31 
Recovering  the  hard  disk  to  original  contents  .  .  .34 
Passwords  .  .  .  .  .  .  .  .  .  .  .  .  .37 
Power  management  .  .  .  .  .  .  .  .  .  .39 
Checkout  guide  .  .  .  .  .  .  .  .  .  .  .  .42 
Testing  the  computer  .  .  .  .  .  .  .  .  .  .42 
Detecting  system  information  with  PC-Doctor  .  .  .45 
Power  system  checkout  .  .  .  .  .  .  .  .  .46 
ThinkPad  X40  .  .  .  .  .  .  .  .  .  .  .  .  .49 
Product  overview  .  .  .  .  .  .  .  .  .  .  .  .51 
Specifications  .  .  .  .  .  .  .  .  .  .  .  .51 
Status  indicators  for  X40  .  .  .  .  .  .  .  .  .53 
FRU  tests  .  .  .  .  .  .  .  .  .  .  .  .  .55 
Fn  key  combinations  .  .  .  .  .  .  .  .  .  .57 
Symptom-to-FRU  index  .  .  .  .  .  .  .  .  .  .59 
Numeric  error  codes  .  .  .  .  .  .  .  .  .  .59 
Error  messages  .  .  .  .  .  .  .  .  .  .  .66 
Beep  symptoms  .  .  .  .  .  .  .  .  .  .  .68 
No-beep  symptoms  .  .  .  .  .  .  .  .  .  .68 
LCD-related  symptoms  .  .  .  .  .  .  .  .  .69 
Intermittent  problems  .  .  .  .  .  .  .  .  .  .70 
 
©  Copyright  IBM  Corp.  2005  iii