Kenwood TS-2000, Service Manual

Page: 124 / 171

125
TS-2000/X
CN No. Pin No. Name I/O Function
8 ANT O Antenna 1/2 changeover relay control.
“H” for antenna 2
9 GND - GND
10 NC - NC
CN27 1 14S O 14V when the power switch on
2 GND - GND
3 GND - GND
FINAL UNIT (X45-360 B/2)
CN No. Pin No. Name I/O Function
CN902 1 UTHV O UHF thermal protection detection
voltage
2 43VSF O UHF forward wave detection
voltage
3 UTXB I UHF TX 8V
4 14S I 14V when the power switch on
5 14S I 14V when the power switch on
6 43VSR O UHF reflected wave detection voltage
7 GND - GND
8 GND - GND
FILTER UNIT (X51-315)
CN No. Pin No. Name I/O Function
CN9 1 NC - NC
2 GND - GND
3 50RL I 50MHz TX LPF relay control.
“H” for LPF active
4 10RL I 10MHz TX LPF relay control.
“H” for LPF active
5 28RL I 28MHz TX LPF relay control.
“H” for LPF active
6 7RL I 7MHz TX LPF relay control.
“H” for LPF active
7 21RL I 21MHz TX LPF relay control.
“H” for LPF active
8 14RL I 14MHz TX LPF relay control.
“H” for LPF active
9 4RL I 3.5MHz TX LPF relay control.
“H” for LPF active
10 2RL I 1.8MHz TX LPF relay control.
“H” for LPF active
11 144RL I 144MHz TX/RX relay control. “H” for TX
12 NC - NC
CN10 1 VSF O Forward wave detection voltage
of HF-50MHz, comes from Filter unit
then combine with 144MHz VSF
CN No. Pin No. Name I/O Function
2 VSR O Reflected wave detection voltage
of HF-50MHz, comes from Filter unit
then combine with 144MHz VSR
3 PHD O Output voltage of phase detector in
Filter unit, which passes through Final
unit then goes to control unit
4 AMD O Output voltage of amplitude detector
in Filter unit, which passes through
Final unit then goes to control unit
5 5A I 5V when the power switch on (analog)
6 HFRL I HF TX/RX antenna changeover relay
control. “H” for TX
7 ATS I Internal antenna tuner in/through
changeover relay control. “H” for
antenna tuner input
8 ANT I Antenna 1/2 changeover relay control.
“H” for antenna 2
9 GND - GND
10 NC - NC
CONTROL UNIT (X53-391)
CN No. Pin No. Name I/O Function
CN1 1 FEN2 O Enable
2 FEN1 O Enable
3 CLK O Serial clock
4 DATA O Serial data
5 8A I 8V when the power switch on (analog)
6 10A I 10V when the power switch on (analog)
7 8D I 8V when the power switch on (digital)
8 14D I Constantly 14V for digital circuit
9 AMD I Output voltage of amplitude detector
in Filter unit
10 PHD I Output voltage of phase detector in
Filter unit
11 THHF I Thermistor detection voltage.
This voltage controls fan speed
12 BOVR I Over voltage detection signal, if the
power supply voltage increases more
than approx. 19V.
Then BOVR becomes “L”
13 PSC O Power on switch control.
“H” for power on
14 TS I/O External antenna tuner (AT-300)
tuning start control
15 TT I/O External antenna tuner (AT-300)
in/through control
TERMINAL FUNCTION