Slide the amplifier-power supply straight back until it is fully seated
against the guide pin assembly (E) located on the rear of the mounting base
(g) Tighten the two fasteners (F) over the two hooks (G) until the
amplifier-power supply, with latched receiver-exciter and amplifier-coupler,
is securely attached to the mounting base (D).
instructions in paragraph 2h, steps 1 through 4, and Figure 9.
Installation of components.