Icom IC-7400, Service Manual, Page: 7 / 92

SECTION 3 DISASSEMBLY AND OPTION INSTALLATIONS
3 - 1
• Opening the transceiver’s case
Follow the case and cover opening procedures shown here
when you want to install an optional unit or adjust the internal
units, etc.
CAUTION:
DISCONNECT the DC power cable from the
transceiver before performing any work on the transceiver.
Otherwise, there is danger of electric shock and/or equip-
ment damage.
q
Remove the 2 screws from the left side of the transceiver
to remove the carrying handle as shown at right.
w
Remove the 6 screws from the top of the transceiver and
the 6 screws from the sides, then lift up the top cover.
e
Turn the transceiver upside down.
r
Remove 6 screws from the bottom of the transceiver, then
lift up the bottom cover.
• UT-102 VOICE SYNTHESIZER UNIT
The UT-102 announces the accessed readout’s frequency,
mode, etc. (S-meter level can also be announced) in a clear,
electronically-generated voice, in English (or Japanese).
➥
Push [LOCK/SPCH] for 1 sec. to announce the frequency,
etc.
q
Remove the top and bottom covers as shown above.
w
Remove the protective paper attached to the bottom of the
UT-102 to expose the adhesive strip.
e
Plug UT-102 into J1920 on the MAIN unit as shown in the
diagram at right.
r
Adjust the trimmer, SPCH LVL: R1925 on the MAIN unit, to
set the speech level if desired. Refer to the illustration at
right.
t
Return the top and bottom covers to their original positions.
MAIN unit
UT-102
J1920
R1925