Attention:  Static  electricity  that  is  released  to  internal  server  components  when 
the  server  is  powered-on  might  cause  the  server  to  stop,  which  might  result  in 
the  loss  of  data.  To  avoid  this  potential  problem,  always  use  an 
electrostatic-discharge  wrist  strap  or  other  grounding  system  when  you  work 
inside  the  server  with  the  power  on.
The
  following  illustration  shows  how  to  install  DIMMs  on  the  system  board. 
DIMM 1
DIMM 2
DIMM 3
DIMM 4
DIMM 5
DIMM 6
DIMM 7
DIMM 8
DIMM 9
DIMM 10
DIMM11
DIMM 12
 
 
To  remove  a  DIMM,  complete  the  following  steps: 
1.  Read  the  safety  information  that  begins  on  page  v  and  “Installation  guidelines” 
on  page  21. 
2.  Turn  off  the  server  and  peripheral  devices,  and  disconnect  the  power  cords  and 
all  external  cables. 
3.  Remove  the  power  supply  or  power  supplies  from  the  server. 
4.  Raise  the  power-supply  cage  out  of  the  way: 
a.  Press  in  on  the  power-supply  latch  bracket,  which  is  on  the  left  side  of  the 
server  when  you  are  facing  the  rear  of  the  server. 
b.  Lift  the  end  of  the  power-supply  cage  and  rotate  the  cage  up  until  it  stops. 
The  tab  on  the  rear  power-supply  latch  bracket  clicks  into  place  when  the 
cage  is  completely  out  of  the  way. 
c.  Let  the  power-supply  cage  rest  on  the  rear  power-supply  latch  bracket.
 Attention:  To  avoid  breaking  the  DIMM  retaining  clips  or  damaging  the  DIMM 
connectors,  open  and  close  the  clips  gently. 
5.  Open  the  retaining  clip  on  each  end  of  the  DIMM  connector;  then,  remove  the 
DIMM  from  the  server.
To
  install  a  DIMM,  complete  the  following  steps: 
1.  Read  the  safety  information  that  begins  on  page  v  and  “Installation  guidelines” 
on  page  21. 
2.  Turn  off  the  server  and  peripheral  devices;  then,  disconnect  the  power  cords 
and  all  external  cables.  Remove  the  cover. 
 
38  IBM  System  x3500  Type  7977:  User’s  Guide