Heat Sink And Fan - HP ProBook 4525s - Notebook PC Maintenance And Service Manual

5. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE:
Reverse this procedure to install the WWAN module.

Heat sink and fan

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.
WWAN modules are designed with a notch (4) to prevent incorrect insertion.
Spare part number
598676-001
613291-001
Component replacement procedures
61