Heat Sink - HP 320 - Notebook PC Maintenance And Service Manual

Compaq 320, 321, 420, 421, 620 and 621 notebook pcs hp 420 and 620 notebook pcs - maintenance and service guide
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3.
Remove the Phillips PM2.0×3.0 screw (2) that secures the fan, and then remove the fan (3).
Reverse this procedure to install the fan.

Heat sink

NOTE:
The heat sink spare part kit includes replacement thermal material.
Description
Heat sink for use in computers with UMA graphics subsystems
Heat sink for use in computers with discrete graphics subsystems
Before removing the heat sink, follow these steps:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.
Disconnect all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.
Remove the battery (see
5.
Remove the service door (see
6.
Remove the fan (see
Remove the heat sink on computers with UMA graphics subsystems:
1.
Position the computer right-side up with the front facing you.
2.
Following the sequence stamped into the heat sink, loosen the captive screws (1) and (2) around
the processor.
Battery on page
53).
Service door on page
Fan on page
64).
53).
Component replacement procedures
Spare part number
605749-001
605750-001
65

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