HP Presario CQ45-300 Compaq Presario CQ45 Notebook PC - Maintenance and Servic - Page 94
Four locations on heat sink
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3. Remove the fan/heat sink assembly (2). The thermal material must be thoroughly cleaned from the surface of the fan/heat sink assembly (1) and the processor (2) each time the fan/heat sink assembly is removed. Thermal pads and thermal paste must be installed on all surfaces before the fan/heat sink assembly is reinstalled. The following locations require thermal pads on systems with discrete graphics subsystems: ● (3) Four locations on heat sink ● (4) Northbridge chip ● (5) nVidia video chip ● (6) Capacitors NOTE: Thermal pads and thermal paste are included with all fan/heat sink assembly, system board, and processor spare part kits. The thermal material must be thoroughly cleaned from the surface of the fan/heat sink assembly (1) and the processor (2) each time the fan/heat sink assembly is removed. Thermal pads and thermal paste must be installed on all surfaces before the fan/heat sink assembly is reinstalled. 86 Chapter 4 Removal and replacement procedures