Heat Sink - HP 321 - Notebook PC Maintenance And Service Manual

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 49).
Service door on page
Fan on page 60).
49).
Component replacement procedures
Spare part number
605749-001
605750-001
61