Kenwood TK-7180 Service Manual

Also see for TK-7180: Modification Information Function reference Brochure & specs Specification Instruction manual

TK-718047Pin No. Name DescriptionJ701 (ACC 25-pin)1 NC Non-connenction.2 RXD1 Serial 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.Data input level adjustable (2.0Vp-p typ.)6 MI2 External MIC input. DC-coupled7 GND Ground.8 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 RXD2 Serial data input 2. TTL level.Input voltage range : +5/0V max.L≤0.8V, H≥4.2V11 GND Ground.12 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.DC13.6V± 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 AFO RX filtered audio output (DC-coupled).AF low level output.Wide : 700mVp-p typ.Narrow : 700mVp-p typ. (Standard modulation)18 GND Ground.19 DEO Detected signal output (DC-coupled).AF output level adjustable (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 ground.TX-RX unit (X57-6980-10) (B/3)Pin No. Name DescriptionCN301 (to TX-RX unit C/3)1 REF Reference signal otput to the PLL IC.2 Fin Complementary signal output to the PLL IC.3 CPGND Ground.4 5C 5V output.5 GND Ground6 CP Signal input from charge pump block in the PLL IC.CN302 (to TX-RX unit C/3)1 UL Control signal input form the PLL IC.2 PLE Control signal output to the PLL IC.3 DT Control signal output to the PLL IC.4 PCK Control signal output to the PLL IC.5 GND Ground.6 DGND Ground.CN403 (to VGS-1)1 OPT1 VGS busy signal input. Option boad I/F 1.Output : L≤0.45V, H≥4.7V/25kΩ loadInput : L≤1.0V, H≥4.0V, Input voltage : 0V~5.0V2 OPT3 VGS playback signal input. Option boad 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 TXD1 Serial data output / PTT singanl output (SC20-460).Output : L≤0.45V, H≥4.7V/25kΩ load5 CLK Serial clock output.6 OPT4 VGS enable output. Option boad I/F 4.Output : L≤0.45V, H≥4.7V/25kΩ load7 USEL UART speed select output. L : 19200bps fixed8 OPT5 VGS reset signal output. Option boad I/F 5.Output : L≤0.45V, H≥4.7V/25kΩ load9 DGND Ground.10 AGND Ground.11 AO VGS audio input. Zin≥10kΩ, 1Vp-p max,Input Voltage : 0V~5.0V12 AI VGS audio output. Zo≥10kΩ13 AGND Ground.14 5E 5V power supply output. 78mA max15 STON Side tone input. 1kHz, 5Vp-pTERMINAL FUNCTION