Emergency Mode - Kenwood TK-860G Service Manual Supplement

Emergency Mode

Transceiver Modification Procedure
• Install the foot switch
Install the foot switch through the KCT-19 and KCT-18.
When the switch is treaded on, the radio enters the emer-
gency mode.
• Change the power switch circuit
TX-RX unit (B/2) : Control section
$R705 : Attach (R92-1252-05, 0 )
TX-RX unit (A/2) : RF section
R142 : Remove (RK73GB1J473J, 47k )
Once the transceiver is modified, it cannot be turned on
and off with the power switch. The power switch turns the
LCD backlight and display on and off. (The power is
switched on and off by IGNITION SENSE.)
Q505
SB
Key
backlight
MBL
IC510
Q506
6
MBL
TX-RX section
CN5
KCT-19 Terminal
13 1
15 6 3
3 : Ignition sense
6 : Earth
15 : Foot switch
Fig. 7
INSTALLATION
Control section
LCD
IC502
Attach
CPU
Power
switch
$R705
87
0
88
25 20
1 3
Remove
KCT-19
IC14
15 pin
Outside
KCT-18
Foot
switch
TK-860G/862G
TX-RX unit B/2
Foil side
TX-RX unit A/2
Foil side
R142
Fig. 8
R705
F.RESET
7