HP DM4 - Manual (Page 65)

c. Optical drive (see Optical drive on page 45 )
d. Top cover (see Top cover on page 49 )
Remove the display assembly:
1. Turn the computer display-side up, with the front toward you.
2. Open the display as far as possible.
3. Disconnect the display panel cable (1) from the system board.
4. Remove the wireless antenna cables from the hole (2) built into the base enclosure.
CAUTION: Support the display assembly when removing the display screws in the following
steps. Failure to support the display assembly can result in damage to the assembly and other
components.
5. Remove the four black Phillips M2.5×6.5 screws (3) that secure the display assembly to the
computer.
6. Remove the display assembly (4).
Component replacement procedures 57