Control Unit (X53-3882-71) - Kenwood TKR-740 Service Manual

CONTROL UNIT (X53-3882-71)

CN4
Terminal Terminal
Terminal function
No. name
1 SPM Speaker mute signal
2 AUX06 Auxiliary output 6
3 RXG RX signal ground
4 AUX05 Auxiliary output 5
5 RA RX audio (voice)
6 AUX04 Auxiliary output 4
7 RD RX data (voice & data)
8 AUX03 Auxiliary output 3
9 TA TX audio (voice)
10 AUX02 Auxiliary output 2
11 TD TX data (data or signalling)
12 AUX01 Auxiliary output 1
13 DG Control line ground
14 TXG TX signal ground
15 AUXI3 Auxiliary input 3
16 NC No connection
17 AUXI2 Auxiliary input 2
18 SC SQ control
19 AUXI1 Auxiliary input 1
20 ExPTT External press-to-talk sw itch
21 TXD RS-232C output signal (for FPU)
22 ExM ON External monitor sw itch
23 RXD RS-232C input signal (for FPU)
24 NC No connection
25 NC No connection
26 NC No connection
27 NC No connection
28 NC No connection
29 NC No connection
30 NC No connection
CN5
Terminal Terminal
Terminal function
No. name
1 B Pow er supply (Vcc)
2 FWD TX forw ard pow er detect signal
3 EXR External reference detect signal
4 CVT TX main PLL lock voltage signal
5 CVR RX main PLL lock voltage signal
6 RD RX data (data & voice)
7 RSSI RX signal strength indicator signal O
8 SPO External Speaker AF
9 SPO External Speaker AF
10 SPI Intenal Speaker AF input
11 GND Ground
12 GND Ground
13 SPG External Speaker ground
14 SPG External Speaker ground
TERMINAL FUNCTION
CN6
Terminal
I/ O
I
O
-
O
O
O
O
O
I
O
I
O
-
CN700
-
I
Terminal
-
I
O
I
I
O
I
I
-
-
CN701
-
Terminal
-
-
-
-
I/ O
O
O
O
O
O
O
O
O
I
-
-
-
-
Terminal
Terminal function
No. name
1 RRA Remote RX signal (voice)
2 RTA Remote TX signal (voice)
3 RPTT Remote Press-to-talk sw itch
4 ExM ON External monitor sw itch
5 GND Ground
6 I/O1 Programable I/O 1
7 I/O2 Programable I/O 2
8 I/O3 Programable I/O 3
9 I/O4 Programable I/O 4
10 I/O5 Programable I/O 5
11 I/O6 Programable I/O 6
12 I/O7 Programable I/O 7
Terminal
Terminal function
No. name
1 B Pow er supply (Vcc)
2 SW1 S705 output
3 SW2 S704 output
4 SW3 S703 output
5 SW4 S702 output
6 SW5 S701 output
7 SW6 S700 output
Terminal
Terminal function
No. name
1 5A2 5V constant voltage A
2 5B2 5V constant voltage B
3 EN7 Enable signal for IC700, 701,702
4 CK Common Clock for IC700, 701, 702
5 DS Serial data for IC702
6 GND Ground
TKR-740
I/ O
O
I
I
I
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/ O
I
O
O
O
O
O
O
I/ O
I
I
I
I
I
-
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