Kenwood TK-7185 Service Manual Addendum

Also see for TK-7185: Instruction manual Instruction manual

Contents

TK-718526Pin No. Name Description2 RXD1Serial data input 1. RS-232C level.Input voltage range : ±30V max.L≤0.4V, H≥2.4V, Zi≥5kΩ3 TXD1 Serial data output 1. RS-232C level.L≤–5V, H≥5V/3kΩ load, Zo≤2kΩ4 AUXI/O9 AUX input/output 9.Active low with 47kΩ pull-up to 5V5 DI Data signal input. 2.0Vp-p typ.6 MI2 External MIC input (DC-coupled)7 GND Ground8 AUXI/O8 AUX input/output 8. Same as AUXI/O99 TXD2 Serial data output 2. TTL level.L≤0.7V, H≥4.2V/25kΩ load, Zo≤1kΩ10 RXD2Serial data input 2. TTL level.Input voltage range : +5/0V max.L≤0.8V, H≥4.2V11 GND Ground12 AUXI/O7 AUX input/output 7. Same as AUXI/O913 AUXI/O6 AUX input/output 6. Same as AUXI/O914 SB Power output after power switch.DC13.2V±15%, 2.0A max.15 AUXO2 AUX output 2. Open collector (500mA max.)(Default none) L≤0.3V16 AUXO1 AUX output 1. Same as AUXO217 AFORX filtered audio output (DC-coupled).AF low level output.Wide : 700mVp-p typ.Narrow : 700mVp-p typ.(Standard modulation)18 GND Ground19 DEO Detected signal output (DC-coupled).740mVp-p typ.20 AUXI/O5 AUX input/output 5. Same as AUXI/O921 AUXI/O4 AUX input/output 4. Same as AUXI/O922 AUXI/O3 AUX input/output 3. Same as AUXI/O923 AUXI/O2 AUX input/output 2. Same as AUXI/O924 AUXI/O1 AUX input/output 1. Same as AUXI/O925 ME MIC groundTX-RX unit (X57-6982-72) (B/3)Pin No. Name DescriptionCN301 (to TX-RX unit C/3)1 REF Reference signal output to the PLL IC2 Fin Complementary signal output to the PLL IC3 CPGND Ground4 5C 5V output5 GND GroundPin No. Name Description6 CP Signal input from charge pump block inthe PLL ICCN302 (to TX-RX unit C/3)1 UL Control signal input form the PLL IC2 PLE Control signal output to the PLL IC3 DT Control signal output to the PLL IC4 PCK Control signal output to the PLL IC5 GND Ground6 DGND GroundCN403 (to VGS-1)1 OPT1VGS busy signal input. Option board I/F 1.Output : L≤0.45V, H≥4.7V/25kΩ loadInput : L≤1.0V, H≥4.0V,Input voltage : 0V~5.0V2 OPT3VGS playback signal input.Option board I/F 3.Output : L≤0.45V, H≥4.7V/25kΩ loadInput : L≤1.0V, H≥4.0V,Input voltage : 0V~5.0V3 RXD1 Serial data input. Input : L≤1.0V, H≥4.0V,Input voltage : 0V~5.0V4 TXD1Serial data output / PTT singanl output(Scrambler board).Output : L≤0.45V, H≥4.7V/25kΩ load5 CLK Serial clock output6 OPT4 VGS enable output. Option board I/F 4.Output : L≤0.45V, H≥4.7V/25kΩ load7 USEL UART speed select output.L : 19200bps fixed8 OPT5VGS reset signal output.Option board I/F 5.Output : L≤0.45V, H≥4.7V/25kΩ load9 DGND Ground10 AGND Ground11 AI VGS audio input. Zin≥10kΩ, 1Vp-p max,Input Voltage : 0V~5.0V12 AO VGS audio output. Zo≤10kΩ13 AGND Ground14 5E 5V power supply output. 78mA max.15 STON Side tone input. 1kHz, 5Vp-p16 DTI Data signal input.Zin≥22kΩ, 600±200mVp-p17 TCTL Speaker mute signal input. Input : L≤1.0V,H≥4.0V, Input voltage : 0V~5.0V18 NC No connection19 AUDIH MIC mute signal input20 OPT2Option board I/F 2.Output : L≤0.45V, H≥4.7V/25kΩload Input : L≤1.0V, H≥4.0V,Input voltage : 0V~5.0VTERMINAL FUNCTION

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