Kenwood NX-900 Service Manual

Also see for NEXEDGE NX-900: Function reference Instruction manual Instruction manual

NX-90066Display unit (X54-3680-10)Pin No. Name FunctionCN901 (to TX-RX unit A/2 CN597)1~6 SPO Speaker input7 GND Ground8 80C 8V input9,10 SB Power input of switched power supply11 NC No connection12 /PSW Detection signal output of power switch13,14 GND Ground15 MIC MIC signal output16 ME MIC ground17 GND Ground18 AFO RX filtered AF signal input19 /PRST Display MCU reset signal input20~23 GND Ground24 SHIFT Control signal input of Beat-shift function25 NC No connection26 5C 5V output27 TXD Serial data signal input28 RXD Serial data signal output29,30 GND GroundCN902 (to internal speaker)1 GND Ground2 SPO Speaker outputCN905 (to LCD ASSY)1 V5 LCD Drive voltage output2 V4 LCD Drive voltage output3 V3 LCD Drive voltage output4 V2 LCD Drive voltage output5 V1 LCD Drive voltage output6 Vdd LCD Driver DC power supply7 Vss LCD Driver Ground8 Vdd LCD Driver DC power supply9 D7 LCD Driver data output10 D6 LCD Driver data output11 D5 LCD Driver data output12 D4 LCD Driver data output13 D3 LCD Driver data output14 D2 LCD Driver data output15 D1 LCD Driver data output16 D0 LCD Driver data output17 /WR LCD Driver WR signal output18 A0 LCD Driver address output19 /RES LCD Driver Reset signal output20 /CS LCD Driver Chip-select signal outputPin No. Name FunctionJ901 (MIC jack)1 BLC MIC key backlight control2 SB Power output of switched power supplyDC13.6V±15%, 200mA typ3 E Ground4 PTT/TXD PTT: PTT input, TXD:Serial data output5 ME MIC ground6 MIC MIC signal input7 HOOK/RXD HOOK: Hook detection,RXD: Serial data input8 DM MIC data detectionTX-RX unit (X57-8060-10) (A/2)Pin No. Name FunctionCN595 (to Option board)1 OPT1Refer to “CN595 26-pin connector specifi-cation” described on pages 70 to 73.2 OPT33 26P_RD4 26P_TD5 NC6 OPT47 OPT108 OPT59 DGND10 AGND11 AI12 AO13 AGND14 50C15 OPT916 DTI17 OPT818 OPT1119 OPT720 OPT221 TXO22 RXEO23 RXEI24 TXI25 OPT626 80CCN597 (to Display unit CN901)1,2 GND Ground3 RXD Serial data signal input4 TXD Serial data signal outputTERMINAL FUNCTION