Strategy  for  replacing  a  hard  disk  drive 
Always  try  to  run  a  low-level  format  before  replacing  a  hard 
disk  drive. 
 
Attention:  The  drive  startup  sequence  in  the  computer 
you  are  servicing  may  have  been  changed.  Be  extremely 
careful  during  write  operations  such  as  copying,  saving,  or 
formatting.  If  you  select  an  incorrect  drive,  data  or 
programs  can  be  overwritten. 
How  to  use  error  messages 
Use  the  error  codes  displayed  on  the  screen  to  diagnose 
failures.  If  more  than  one  error  code  is  displayed,  begin  the 
diagnosis  with  the  first  error  code.  Whatever  causes  the 
first  error  code  may  also  cause  false  error  codes.  If  no 
error  code  is  displayed,  see  whether  the  error  symptom  is 
listed  in  the  Symptom-to-FRU  Index  for  the  computer  you 
are  servicing. 
Strategy  for  replacing  FRUs  for  CTO, 
CMV,  and  GAV 
Product  definition 
Dynamic  Configure  To  Order  (CTO)
This  provides  the  ability  for  a  customer  to  configure  an  IBM 
solution  from  an  eSite,  and  have  this  configuration  sent  to 
fulfillment,  where  it  is  built  and  shipped  directly  to  the 
customer.  The  machine  label,  PC  Entitlement  Warehouse 
(PEW),  eSupport,  and  the  HMM  will  load  these  products  as 
the  4-digit  MT  and  3-digit  model,  where  model  =  “CTO” 
(Example:  1829-CTO). 
Custom  Model  Variant  (CMV)
This  is  a  unique  configuration  that  has  been  negotiated 
between  IBM  and  the  customer.  A  unique  4-digit  MT  and 
3-digit  model  is  provided  to  the  customer  to  place  orders 
(Example:  1829-W15).  A  CMV  is  a  special  bid  offering. 
Therefore,  it  is  NOT  generally  announced. 
v  The  MTM  portion  of  the  machine  label  is  the  4-digit  MT 
and  3-digit  model,  where  model  =  “CTO”  (Example: 
1829-CTO).  The  PRODUCT  ID  portion  of  the  machine 
label  is  the  4-digit  MT  and  3-digit  CMV  model  (Example: 
1829-W15). 
v  The  PEW  record  is  the  4-digit  MT  and  3-digit  model, 
where  model  =  “CTO”  (Example:  1829-CTO). 
v  eSupport  will  show  both  the  CTO  and  CMV  machine 
type  models  (Example:  1829-CTO  and  1829-W15  will  be 
found  on  the  eSupport  site.) 
Important  service  information  
4  MT  2369/2370/2371/2372/2382/2386