R5000.2

EXPANSION FEATURES

The R5000 has six "Expansion Feature" options which are not documented
in the user manuals.  These are controlled by jumpers (actually diodes)
on the CPU board, which is attached to the back of the receiver's front
control panel, underneath a metal RF shield.  Unfortunately, you must
completely remove the receiver's covers, and unfasten the front panel,
in order to access these.

Gaining Access to the Jumpers

To access the jumpers, remove the top and bottom covers of the receiver
by removing the eight silver screws which hold each cover in place.  Use
caution at this point, since the radio will be sitting only on its
internal chassis, and delicate parts will be exposed.

Next, remove the four flat silver screws which were *under* the covers
(NOT the black screws that are visible with the covers on) which hold
the front panel onto the main chassis.  Be sure the receiver is sitting
on a solid table so that the front panel will not fall off when you do
this, since there are a large number of wire harnesses connecting to the
CPU board.  Very carefully pull the front panel forward and rotate it so
that you can get access to the back of the front panel.

Loosen the five small metal screws (two at the top, three at the bottom)
which hold the RF shield in place over the CPU board.  The holes in the
shield the screws go into are slots, which allow you to slide the shield
off without removing the screws completely.  This is fortunate since the
screws are fairly small.  Remove the RF shield.