Modem Module - HP ProBook 4520s Maintenance And Service Manual

3. Remove the Bluetooth antenna (3) from the base enclosure.
Reverse this procedure to install the Bluetooth module.

Modem module

Description
For use in all countries and regions except Australia and New Zealand
For use only in Australia and New Zealand
Before removing the modem module, 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 switch cover and keyboard (see
6. Remove the optical drive (see
Battery on page 50).
Switch cover and keyboard on page
Optical drive on page 56).
Component replacement procedures
Spare part number
510100-001
510100-011
51).
99