Furuno FS-5070, Installation Manual

Page: 41 / 84

3-3
3.3 Manual 2182 kHz Tuning Preset
For safety measure, it is required that 2182 kHz be tunable both automatically and manually.
The setup to enable manual tuning, in the event the antenna tuner system fails, is made
with the DIP switches in the antenna coupler. Be sure not to transmit during silent period (00
to 03 min. 30 to 33 min. of every hour).
1. Remove the top cover of the antenna coupler. Set the S1 switch on Coupler Board to
AUTO.
AUTO MANUAL
Coupler Board
S1
switch
LED
(CR1-
CR8)
Dip SW S4
DipSW S5
S6
LED (CR9-CR22)
S1 switch on the COUPLER Board
2. Turn the control unit on.
3. Press the
1/RT/2182 key down for two seconds.
4. Press and hold the LOG/TUNE key down for two seconds. “TUNE” appears on the LCD.
“TUNING: OK” appears when tuning is completed. Record the status (on or off) of LEDs
CR1 – CR22 on the COUPLER Board.
5. Set S1 switch to MANUAL.
6. Set S4, S5, S6 DIP switches so that LED state is the same as in step 4.
The relations between the DIP switch and LED are shown below. When a DIP switch is
turned on, the appropriate LED lights.