v  Follow  the  suggested  actions  in  the  order  in  which  they  are  listed  in  the  Action  column  until  the  problem 
is  solved. 
v  See  the  parts  listing  in  the  Problem  Determination  and  Service  Guide  to  determine  which  components  are 
customer  replaceable  units  (CRU)  and  which  components  are  field  replaceable  units  (FRU). 
v  If  an  action  step  is  preceded  by  “(Trained  service  technician  only),”  that  step  must  be  performed  only  by  a 
trained  service  technician. 
Symptom  Action 
A  serial  device  does  not  work. 
1.  Make  sure  that: 
v  The  device  is  compatible  with  the  server. 
v  The  serial  port  is  enabled  and  is  assigned  a  unique  address. 
v  The  device  is  connected  to  the  correct  connector  (see  “Rear  view”  on  page 
37).
2.
  Reseat  the  following  components: 
a.  Failing  serial  device 
b.  Serial  cable 
c.  Remote  Supervisor  Adapter  II  SlimLine  (if  one  is  present)
3.
  Replace  the  following  components  one  at  a  time,  in  the  order  shown,  restarting 
the  server  each  time: 
a.  Failing  serial  device 
b.  Serial  cable 
c.  Remote  Supervisor  Adapter  II  SlimLine  (if  one  is  present) 
d.  (Trained  service  technician  only)  System  board
 
Software  problems 
 
v  Follow  the  suggested  actions  in  the  order  in  which  they  are  listed  in  the  Action  column  until  the  problem 
is  solved. 
v  See  the  parts  listing  in  the  Problem  Determination  and  Service  Guide  to  determine  which  components  are 
customer  replaceable  units  (CRU)  and  which  components  are  field  replaceable  units  (FRU). 
v  If  an  action  step  is  preceded  by  “(Trained  service  technician  only),”  that  step  must  be  performed  only  by  a 
trained  service  technician. 
Symptom  Action 
You  suspect  a  software 
problem. 
1.  To   determine  whether  the  problem  is  caused  by  the  software,  make  sure  that: 
v  The  server  has  the  minimum  memory  that  is  needed  to  use  the  software.  For 
memory  requirements,  see  the  information  that  comes  with  the  software.  If 
you  have  just  installed  an  adapter  or  memory,  the  server  might  have  a 
memory-address  conflict. 
v  The  software  is  designed  to  operate  on  the  server. 
v  Other  software  works  on  the  server. 
v  The  software  works  on  another  server.
2.
  If  you  received  any  error  messages  when  using  the  software,  see  the 
information  that  comes  with  the  software  for  a  description  of  the  messages  and 
suggested  solutions  to  the  problem. 
3.  Contact  your  place  of  purchase  of  the  software.
 
 
Chapter  5.  Solving  problems  73