Pioneer PDK-WM03 - Manual (Page 19)

E-8
2 Catch the hooks on the left and right display fittings into the grooves in
the wall mounting unit.
When the upper hook is completely engaged, a white painted area will
be visible in the window.
With the upper hooks engaged in the wall mounting unit
grooves, lift the plasma display directly upward about 1
cm until it stops, then push the bottom of the plasma
display toward the wall to engage it with the lower hooks.
Reference:
The plasma display is properly mounted if it does not
move when pulled towards you.
Lower hook
Upper hook Upper hook hole
White paint
Vertical Installation