Kenwood TK-7100 Service Manual page 11

7. Ignition Sense Cable (KCT-18)
The KCT-18 is an optional cable for enabling the ignition
function. The ignition function lets you turn the power to the
transceiver on and off with the car ignition key.
7-2. Connecting the KCT-18 to the Transceiver
1. Install the KCT-39 in the transceiver. (See the KCT-39 sec-
tion)
2. Insert the KCT-18 lead terminal (
39 ( ).
2
13 2
1
15
3
1
Fig. 4
7-3. Modifying the Transceiver
Modify the transceiver as follows to turn the power on and
off with the ignition key.
1. Remove the resistor R71 of the TX-RX unit.
■ Setting With the KPG-80D
Select "External Devices" from the "Edit" menu and en-
able the "Ignition Sense".
Fig. 5
REALIGNMENT / INSTALLATION
1 ) into pin 2 of the KCT-
TX-RX unit
Component side
1. Optional Board
1-1. Voice Scrambler Board Connection
■ Modification
1. Remove the cabinet and shielding cover from the trans-
ceiver.
2. Delete R202 and R267 on the TX-RX unit.
CN3
R267
Fig. 1
■ Connection
The functions of pins of CN2 and CN3 on the TX-RX unit
are shown in the TERMINAL FUNCTION section (page 50).
12 pins lead wire
with connector (A)
CN2 E37-1081-05
1 1
3
9
7 8
8
7
9 D
10 C
11 B
12 12 A
11 pins lead wire
with connector (B)
CN3 E37-1080-05
1 1
4 12
5 5
7
6
9 11
11 11 10
Fig. 2
TK-7100
TX-RX UNIT
Component side
R202
Voice scrambler
board
A12 A
A11 B
A10 C
A9 D
E
1
2
3
4
B5 5
B7 6
A8 7
A7 8
A3 9
B11 10
B9 11
B4 12
E18
11