Kenwood NXR-710 Service Manual page 55

Display Unit (X54-3580-20) (A/2)
Pin No. Name I/O
CN501 (To X54-358 B/2 CN601)
1 HK I Hook detection input/ RXD input
2 MIC I MIC signal input
3 MIG - MIC ground
4 PTT I/O PTT input/ TDX output
5 GND - Ground
6 NC - No connection
7 SB O Power supply output after power switch
8 NC - No connection
9 GND - Ground
10 5M O Common 5V output
11 VLI I Volume control input for AF signal
CN502 (To X53-449 CN40)
1 MIG - MIC ground
2 MIC O MIC signal output
3 VLI O Volume control output for AF signal
4 5C I Common 5V output
5 K4 I KEY input 4
6 K5 I KEY input 5
7 K2 O KEY input 2
8 K3 O KEY input 3
9 K1 O KEY input 1
10 HK/RXD O Hook detection output/ RXD input
11 SOE I Output enable for shift register
12 PTT/TXD I/O PTT output/ TDX input
13 STB1 I Strobe data for shift register
14 CLK I Clock data input
15 DAT I Serial data input
16 PSW O Power switch output
17 GND - Ground
18 NC - No connection
19 SB I Power supply output after power switch
20 SB I Power supply output after power switch
Display Unit (X54-3580-20) (B/2)
Pin No. Name I/O
CN601 (To X54-358 A/2 CN501)
1 VLI O Volume control output for AF signal
2 5M I Common 5V input
3 GND - Ground
4 NC - No connection
5 SB I Power supply output after power switch
6 NC - No connection
7 GND - Ground
8 PTT I/O PTT output/ TDX input
TERMINAL FUNCTION
Function
Function
Pin No. Name I/O
9 MIG - MIC ground
10 MIC O MIC signal output
11 HK O Hook detection output/ RXD output
J601 (MIC jack)
1 NC - No connection
2 SB O Power supply output after power switch
3 GND - Ground
4 PTT/TXD I/O PTT input/ TDX output
5 MIG - MIC ground
6 MIC I MIC signal input
7 HOOK/RXD I Hook detection input/ RXD input
8 NC - No connection
TX-RX Unit (X57-7940-10)
Pin No. Name I/O
CN101 (To RX ANT)
1 RX_SIGNAL I Receive signal input (Coaxial)
CN202 (To X58-507 CN350)
1 GND - Ground
2 NC - No connection
3 80C_2 O 8V power supply
4 RXVCOA/B O VCO select
5 RX_CV I Control voltage input
6 NC - No connection
7 RXASSIST O Assist voltage output
CN203 (To X58-507 CN351)
1 VO I VCO input
2 GND - Ground
CN204 (To X58-507 CN303)
1 FIN O VCO output
2 SPSCLK0 O PLL clock output
3 /RXPCS_TR O PLL chip select output
4 SPSD0 O PLL data output
5 33C O 3.3V power supply
6 50C O 5V power supply
7 LDR I PLL lock detect input
8 REF O 19.2MHz reference clock output
CN500 (To Ext IN)
1 REF IN I External reference input (Coaxial)
CN605 (To X58-508 CN350)
1 GND - Ground
2 TXVCOB O VCOB select
3 80C_1 O 8V power supply
4 TXVCOA O VCOA select
5 TX_CV I Control voltage input
6 MO O Modulation output
NXR-710
Function
Function
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