HP Dv7-2170us HP Pavilion dv7 Entertainment PC - Maintenance and Service Guide - Page 101

graphics/heat sink contact, the graphics subsystem chip

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4. Remove the fan/heat sink assembly (3). NOTE: Due to the adhesive quality of the thermal material located between the fan/heat sink assembly and system board components, it may be necessary to move the fan/heat sink assembly from side to side to detach the assembly. NOTE: The thermal material must be thoroughly cleaned from the surfaces of the fan/heat sink assembly and the system board each time the fan/heat sink assembly is removed. Thermal paste is used on the processor (1) and the heat sink section (4) that services it. Thermal pads are used on the Northbridge chip (2) and Northbridge contact (4), the graphics subsystem chip (3) and graphics/heat sink contact (4). Replacement thermal material is included with all fan/heat sink assembly, system board, and processor spare part kits. NOTE: Steps 5 through 8 apply only to computer models equipped with UMA graphics subsystem memory. 5. Turn the system board upside down, with the expansion port 3 and external monitor port toward you. 6. Disconnect the fan cable (1) from the system board. Component replacement procedures 93

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4.
Remove the fan/heat sink assembly
(3)
.
NOTE:
Due to the adhesive quality of the thermal material located between the fan/heat sink
assembly and system board components, it may be necessary to move the fan/heat sink assembly
from side to side to detach the assembly.
NOTE:
The thermal material must be thoroughly cleaned from the surfaces of the fan/heat sink
assembly and the system board each time the fan/heat sink assembly is removed. Thermal paste
is used on the processor
(1)
and the heat sink section
(4)
that services it. Thermal pads are used
on the Northbridge chip
(2)
and Northbridge contact
(4)
, the graphics subsystem chip
(3)
and
graphics/heat sink contact
(4)
. Replacement thermal material is included with all fan/heat sink
assembly, system board, and processor spare part kits.
NOTE:
Steps 5 through 8 apply only to computer models equipped with UMA graphics subsystem
memory.
5.
Turn the system board upside down, with the expansion port 3 and external monitor port toward
you.
6.
Disconnect the fan cable
(1)
from the system board.
Component replacement procedures
93