Kenwood TK-250 Service Manual page 43

~ TERMINAL FUNCTION
~ TX-RX UNIT(X57-4440-10) (A/3) : TX-RX section
TK-250
Connector No.
Pin No.
Pin Name 110 Function
1 E
GND
DE
a
AF detection signal output (RX)
MD
I
AF modulation signal input
(TX)
BL
I AF modulation signal (Low Speed Data) input
(TX)
CK
I
PLL clock data input
PE I
PLL enable data input
OT
1
PLL data line input KY I
Normally : 5V, Transmit : OV
UL
a
Normally : 5V, Transmit : OV
SV I
Normally : OV, Transmit : 5V
TR
I
Normally : 5V, Transmit : OV
PC I
APC power control input
(TX)
SB
I
Power input after power switch
PB
a
Power output after passing through the fuse
B
a
Power output after passing through the fuse
TX-RX UNIT(X57-4440-10) (A/3) : TX-RX section
Connector No.
Pin No.
Pin Name 110
Function 1 +B I
Extemal power supply input
TX-RX UNIT(X57-4440-10)
(B/3) :
Control section
Connector No.
Pin No. Pin Name
110
Function
1 E -
GND
DE I
AF detection signal input (RX)
MD
a
AF modulation signal output (TX)
BL
a
AF modulation signal (Low Speed Data) output
(TX)
CK
a
PLL clock data output
PE
a
PLL enable data output
OT
a
PLL data line output
KY
a
Normally : 5V, Transmit : OV
UL I
Normally : 5V, Transmit : OV
SV
a
Normally : OV, Save mode: 5V
TR
a
Normally : 5V, Transmit : OV
PC
a
APC power control input
(TX)
SB
a
Power output after power switch
PB I
Power input after passing through the fuse
B I
Power input after passing through the fuse
TX-RX UNIT(X57-4440-10)
(B/3) :
Control section
Connector No.
Pin No. Pin Name
110
Function
1 MaN I
Normally : 5V, Monitor when connected GND.
PTT I
Normally : 5V, Transmit when connected GND.
LMP I
Normally: 5V, Lamp when connected GND.
E
-
GND
43