Toshiba M507 Manual Do Utilizador

Página de 250
4  Replacement Procedures
 
4.18 CPU Heat sink/CPU 
Removing the CPU Heat sink 
To remove the heat sink, follow the steps below and refer to Figures 4-37 to 4-38. 
 CAUTION: 1)    The CPU can become very hot during operation.    Be sure to let it 
cool before starting repair work. 
   
 
2)    When you remove the CPU, replace the thermal pad on the bottom 
of heat sink with a new one before installing. 
 
1.  Turn the main PCB over and remove the following screws securing the CPU heat 
sink and remove it. 
 M2
3L   
FLAT HEAD screw   
6 
 
Figure 4-37    Removing screws securing heat sink 
CAUTION:    Remove the screws in the order of mark “6”,”5”,“4”,“3”, “2” and 
“1” on the CPU holder. 
 
4-52                                                        [CONFIDENTIAL] 
SatelliteM500/M500D Maintenance Manual