HP EliteBook 840 G6 Maintenance And Service Manual page 77

1. Position the computer upright and open as far as possible.
2. Remove the three Phillips M2.0 × 3.0 screws that secure the system board to the computer.
3. Close the computer and position it upside down.
4. Disconnect the following cables from the system board:
(1) RTC battery cable
(2) Fingerprint reader cable (reverse ZIF)
(3) NFC module cable (ZIF)
(4) Speaker cable
(5) Display cable
(6) Camera cable
(7) Power button board cable (ZIF)
(8) USB cable (reverse ZIF)
(9) Smart card reader cable (ZIF)
Component replacement procedures 67