Heat Sink/Fan Assembly - HP EliteBook 725 G4 Maintenance And Service Manual

Heat sink/fan assembly

NOTE: The heat sink/fan assembly spare part kit includes replacement thermal material.
Description
Heat sink/thermal module with fans
Before removing the heat sink/fan assembly, follow these steps:
1. Turn off 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 the power from the computer by first unscrewing the power cord from the AC outlet, and
then unscrewing the AC adapter from the computer.
3. Disconnect all external devices from the computer.
4. Bottom cover (see
5. Remove the battery (see
6. Remove the system board (see
Remove the heat sink/fan assembly:
▲ Disconnect the fan cable (1), loosen the six captive screws on the fan and heat sink following
the sequence stamped on the heat sink (2), and then remove the heat sink/fan assembly from
the system board (3).
CAUTION:
the fans are very fragile and can be easily damaged and bent during removal.
NOTE:
the system board components each time the heat sink is removed. Replacement thermal material is
included with the heat sink, processor, and system board spare part kits.
Bottom cover on page
Battery on page
System board on page
Take extreme care when removing the heat sink and fan assembly. The heatpipes between
The thermal material must be thoroughly cleaned from the surfaces of the heat sink and
33).
36).
49).
Component replacement procedures
Spare part number
821691-001
53