Tx Unit (X56-3072-70) - Kenwood TKR-740 Service Manual

TX UNIT (X56-3072-70)

CN1
Terminal Terminal
Terminal function
No. name
- DRIV OUT Drive signal output (coaxial)
CN2
Terminal Terminal
Terminal function
No. name
1 PAB AFPA pow er supply (Vcc)
2 B Pow er supply (Vcc)
3 B Pow er supply (Vcc)
4 B Pow er supply (Vcc)
5 H/L High pow er/Low pow er control
6 FWD Forw ard pow er detect voltage
7 REV Reflected pow er detect voltage
8 PC TX pow er control signal
9 PRT High temperature detector signal
10 GND Ground
11 8T TX 8V constant voltage
12 AUX Auxiliary
CN3
Terminal Terminal
Terminal function
No. name
1 M OD M odulation signal
2 TO Signalling signal
3 M IG M icrophone ground
4 EVT TX electronic volume enable signal
5 EST TX shift register enable signal
6 DT Data signal for IC3 & IC4
7 CK Clock signal for IC3 & IC4
8 NC No connection
9 NC No connection
10 SDA RX EEPROM serial data
11 SCL RX EEPROM serial clock
12 LDT TX main PLL lock detector
13 PRT High temperature detect
14 CP TX both PLL clock signal
15 NC No connection
16 DP TX both PLL data signal
17 EXR External reference detector
18 CVT TX main PLL lock voltage
19 REV Reverse TX pow er detector
20 FWD Forw ard TX pow er detector
21 GND Ground
22 PAG Digital pager signal
23 B Pow er supply (Vcc)
24 B Pow er supply (Vcc)
25 B Pow er supply (Vcc)
26 PAB Pow er supply for AF PA IC
CN101
Terminal Terminal
Terminal function
No. name
- EXT REF External reference signal input (coaxial)
TERMINAL FUNCTION
CN102
Terminal
I/ O
O
CN103
Terminal
I/ O
I
I
I
I
CN104
O
Terminal
I
I
O
I
-
CN301
O
Terminal
-
I/ O
CN302
I
Terminal
I
-
I
I
I
I
-
-
I
I/O
O
O
I
-
I
CN304
O
Terminal
O
O
O
-
I
CN305
O
O
Terminal
O
O
CN306
I/ O
Terminal
I
Terminal
Terminal function
No. name
- REF OUT RX reference signal output (coaxial)
Terminal
Terminal function
No. name
1 GND Ground
2 FB Fused +B (for cooling FAN)
Terminal
Terminal function
No. name
1 GND Ground
2 FB Fused +B (for cooling FAN)
Terminal
Terminal function
No. name
- DRIV IN Drive signal input (coaxial)
Terminal
Terminal function
No. name
1 PAB AFPA pow er supply (Vcc)
2 B Pow er supply (Vcc)
3 B Pow er supply (Vcc)
4 B Pow er supply (Vcc)
5 H/L High pow er/Low pow er control
6 FWD Forw ard pow er detect voltage
7 REV Reflected pow er detect voltage
8 PC TX pow er control signal
9 PRT High temperature detector signal
10 GND Ground
11 8T TX 8V constant voltage
12 AUX Auxiliary
Terminal
Terminal function
No. name
1 GND Ground
2 FB Fused +B (for cooling FAN)
Terminal
Terminal function
No. name
1 GND Ground
2 FB Fused +B (for cooling FAN)
Terminal
Terminal function
No. name
- +B Pow er supply input (Vcc)
TKR-740
I/ O
O
I/ O
-
O
I/ O
-
O
I/ O
I
I/ O
O
O
O
O
I
O
O
I
O
-
I
-
I/ O
-
O
I/ O
-
O
I/ O
I
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