Icom IC-F1610 Service Manual page 6

SECTION 3
• Opening cover
Remove 4 screws from bottom cover.
• OPC-617 connection
Connect to J4
Break the jack plate using cutting pliers to connect the
OPC-617.
DISASSEMBLY AND OPTION INSTRUCTIONS
Jack plate
• Installation location
Install option units.
OPC-617 ACC CABLE: J4
UT-96 5-TONE UNIT
or UT-105 SmarTrunk II
EX-1761 MEMORY EXPANSION UNIT: J7
OPC-822 INTERFACE CABLE: J501
OPC-822
OPC-617
PIN ASSIGNMENT
Pin Terminal
No. name
1 DIM Backlight control input
AF output for public
2 PAAF address and Ext SP func-
tions
AF output for a terminal
3 DISC
unit
4 IN AF input for a terminal unit 330 mV rms/1200 bps
5 PTT PTT control input
Grounded when receiving
6 HORN
the specified call
7 PAAF – Ground for PAAF
8 DISC – Ground for terminal output
9 IN – Ground for terminal input
3 - 1
J6
TM Logic Board
UT-96
UT-105
EX-1761
1 5
6 9
Description Specification
+5 to +30 V for dark
0 to 330 mV rms/
47 kΩ
330 mV rms/100 kΩ
0 V for transmit
Less than 50 mA
when grounded
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