Checkout  guide 
Use  the  following  procedures  as  a  guide  in  identifying  and 
correcting  problems  with  the  ThinkPad  computer. 
Note:  The  diagnostic  tests  are  intended  to  test  only 
ThinkPad  products.  The  use  of  non-ThinkPad 
products,  prototype  cards,  or  modified  options  can 
lead  to  false  indications  of  errors  and  invalid  system 
responses. 
1.  Identify  the  failing  symptoms  in  as  much  detail  as 
possible. 
2.  Verify  the  symptoms.  Try  to  re-create  the  failure  by 
running  the  diagnostic  test  or  by  repeating  the 
operation.
Testing  the  computer 
The  ThinkPad  computer  has  a  test  program  called 
PC-Doctor  for  DOS  (hereafter  called  PC-Doctor.)  You  can 
detect  errors  by  running  the  diagnostics  test  included  in 
PC-Doctor.  This  section  is  an  overview  of  the  procedure. 
For  details  that  depend  on  model-unique  functions,  refer  to 
“Product  overview”  on  page  45. 
For  some  possible  configurations  of  the  computer, 
PC-Doctor  might  not  run  correctly.  To   avoid  this  problem, 
you  need  to  initialize  the  computer  setup  by  use  of  the 
BIOS  Setup  Utility  before  you  run  PC-Doctor.  On  the  BIOS 
Setup  Utility  screen,  press  F9,  Enter,  F10,  and  then  Enter. 
Note:  When  you  initialize  the  computer  configuration, 
some  devices  are  disabled,  such  as  the  serial  port. 
If  you  test  one  of  these  devices,  you  will  need  to 
enable  it  by  using  Configuration  utility  for  DOS.  The 
utility  is  available  on  the  following  Web  site: 
http://www.lenovo.com/think/  support 
PC-Doctor  cannot  be  used  to  test  a  device  that  is  in  the 
docking  station,  even  if  the  computer  supports  the  docking 
station.  To   test  a  USB  device,  connect  it  to  the  USB 
connector  of  the  computer. 
Creating  the  PC-Doctor  diagnostics  diskette 
To  create  the  PC-Doctor  disk  from  the  Access  IBM 
Predesktop  Area,  do  as  follows: 
1.  Enter  the  Predesktop  application  by  pressing  the 
Access  IBM  button  during  POST. 
2.  When  the  Access  IBM  application  finishes  loading, 
double-click  the  “Create  Diagnostic  Diskettes”  icon. 
Checkout  guide 
General  descriptions  35