Yaesu FT-712RH, Technical Supplement

Page: 3 / 33

BOTTOM COVER REMOVAL
The f o l l o w i n g circuit boards are accessed
by removing the bottom cover:
Main Unit* (component side)
IF Unit*
Mic Unit*
APC Unit
VCO Unit
PA Unit (lower edge only)
To remove the bottom cover, remove the
four screws marked " * " in Figure 1, plus
the four marked " ^ " if the top cover has
not already been removed. Then lift the
cover away.
* To access these boards it may be neces-
sary to remove th loudspeaker and
holder:
(1) Referring to Figure 2, unplug the
speaker wire connector from J1005
on the M a i n Unit, and l i f t the
loudspeaker out of its bracket.
(2) Remove the three screws in the
arms of the speaker bracket and
remove the bracket.
TOP COVER REMOVAL
Removing the top cover exposes the Solder
Side of the Main Unit circuit board and the
top edge of the PA Unit board.
To remove the top cover, remove the four
screws marked " © " in Figure 1, plus the
four marked " 8$ " if the bottom cover has
not already been removed. Then lift the
cover away.
Figure 2
FRONT PANEL REMOVAL
Removing the front panel allows access to
the Control Unit and LCD Unit circuit
boards.
(1) After the top and bottom covers have
been removed, pull off the Selector, VOL
and SQL knobs.
(2) Remove the nut from the microphone
jack using a slotted ring wrench as
shown in Figure 3.
The front panel can now be slid forward.