4 Units Description 
4-14
apply some water-proof glue in its circumference when installation. 
3.  Remove the water-proof glue in the circumference of temperature switch. After replacing 
the temperature switch, apply the water-proof glue in its circumference. 
4.  Remove  the  water-proof  glue  in  the  circumference  of  radiator,  four  M4x12  hexagon 
socket  head  screws,  radiator  and  insulation  layer  in  turn,  and  then  replace  the 
refrigerating  plate.  You  must  coat  the  two  sides  of  the  refrigerating  plate  with 
heat-conducting glue (0.1-0.2mm thick) before installing the refrigerating plate; the side 
with  word  is  matched  with  protruding  flat.  Apply  some  water-proof  glue  in  the 
circumference of radiator after finishing installation. 
Precautions
: 
1.  Proper screws should be used. Stainless screws are required. 
2.  The  insulation  layer  should  be  replaced  with  a  new  one  while  maintaining  the 
refrigerating plate. 
3.  The refrigerating plate should be installed in the correct direction (the side with words 
should be matched with protruding flat), otherwise it can not function as expected. 
4.  To  install  the  refrigerating  plate,  the  screws  must  be  tightened  evenly  to  avoid  the 
damage caused by uneven force when mounting the plate   
4.3.3.2  Disk Drive Assembly 
Figure4-14 Disk Drive Assembly 
           
The disk drive assembly includes the motor assembly, sensor assembly and drive shaft 
assembly. The motor assembly and sensor assembly are main parts that need to be 
maintained.