I Optional Unit Installation - Icom IC-M603 Instruction Manual

9
CONNECTIONS AND MAINTENANCE

I Optional unit installation

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.
See the following the case disassembly procedure when you
want to install an optional unit.
q Remove the 12 screws and open the transceiver.
w Turn the transceiver upside down, then disconnect the 3
flat cables and Rear mic connector (6-pin) from LOGIC
board, and Front mic connector (2-pin) and Volume con-
nector (3-pin) from AF board.
Rear mic
connector
Volume
(6-pin)
connector
(3-pin)
Front mic
connector (2-pin)
50
Flat cables
LOGIC
board
AF board
e Install an optional unit to J3 on the AF board as shown
below.
Optional unit
AF board
r Assemble the units to their original positions.
CAUTION:
• Tighten the screws with the specified torque (0.7 N.m)
when assembling the transceiver. Otherwise the trans-
ceiver may be damaged (torque too high) or lose water-
proof efficiency (torque too low).
• When unistalling the optional unit, remove it vertically.
Wiggling the unit from side to side may damage the op-
tional unit's connector.
J3