If Unit (X48-1390-00) - Kenwood TS-670 Service Manual

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1(e
TS-670
TERMINAL FUNCTIONS
39
Connector Terminal Terminal
Function
No. No. name
1 7A
7 MHz BAND information
2 21 A 21 MHz BAND information
3 28 A 28 MHz BAND information
4 50 A 50 MHz BAND information
5
14
14 V input
6 ABB
7,21,28,50 MHz BAND USE="H"
(about 11.5 VI
1 PB
PLL 8 V output
2 VC2
VCO output to CONT UNIT
3 PG PLL GND
4
GND GND
5 CV
VCO control voltage
1 CV
VCO control voltage
2 GND GND
1
GCV
VCO input from GC-1 0
1 TIF
TX 8.83 MHz input
2
GND
GND
1
GND GND
2 FMT
FM TX 8.83 MHz input
1
TXB TX+8.8 V
2
G2
Gain control voltage on TX
1
GCO
RF input from GC-lO
2 GND GND
IF UNIT
(X48-1390-00)
1 RIF
RX IF signal input
2 GND
1 NC
2 AMF
AM Frequency shift signal
1 AMC
Filter switch signal AM common
2
CWN
Filter switch signal YK-88C
3 AMW
Filter switch signal YK-88A
4 CWW
Filter switch signal YK-88S
5 AMN
Filter switch signal YK-88S
6
SCC
Filter switch signal SSB, CW common
1
SSB SSB: 7 V
2 CWB CW: 7 V
3 AMB
AM: 7 V
4
NC
5 FMB FM: 8 V
1 TXB
TX 8.8 V
2 RXB
RX: 9 V
1 TXB TX: 8.8 V
2 G2
RF UNIT TX FET AMP G2 Control voltage
1 MV2
MIC VR 2
2 GND
3 GND
4
MV3 MIC VR 3
1 GND
2
FMC
FM UNIT MIC ANP output
1
MIC
MIC input
2
GND
1 PCV
Power control VR signal
2
MIN
Power control MIN power set
1 GND
2 SP
SPEAKER
Connector Terminal Terminal
Function
No. No. name
1 SP
2 GND
3 SPJ
1 TBL
CW key down about 8 V
2 CWB
CW, about 7 V
3 RXB
RX, about 9 V
1 RL
TX about 13 V Relay control voltage
2 RAL
Remote ALC input
1
VO
Voice synthesizer signal
2
GND
3
8V DC 8 V
1 TIF
TX output
2
GND
1
ALC
ALC signal
2 PCL
power control DC signal
3 RL
TX about 13 V Relay control voltage
4 FMB
FM about 8 V
5 8V DC 8 V
1
GND
2 SP
1 SM
S meter signal
2 NC
1
GND
2 FAF
FM AF signal
3
FMB
FM aboCt 8 V
4
FSO FM SO
5 TXB
TX about 8.8 V
6 FSM
FM S meter signal
7
ALC
FM ALC signal
1
8V DC 8 V
2 -6
DC - 6 V
3 14 A
14 V after choke coil
i
5V DC 5 V
1 GND
2 11 V
DC 11 V Display
1 14 A
14 V after choke coil
2 14
14 V input
1 RFG
RF gain control signal DC
2 NC
1 AGC AGC LINE
2
8V DC 8 V
3 -6
DC - 6 V
4 14 A
14 V after choke coil
1
GND
2
BZ BEEP TONE ON
1
AV2
AF"VR 2
2 GND
3 GND
4
AV3 AF VR 3
1 SSO
SSB SO VR
2
FSO
FM SO VR
1
GND
2 CAR
8.83 MHz Carrier input
1
NC
2
CWD CW Brake in time constant control