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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.
M23L 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