Kenwood NX-720H(G) Service Manual

Also see for Nexedge NX-720H: Instruction manual Instruction manual Instruction manual

Contents

NX-720H(G)/720H84. External Speaker (Option)4-1. KES-5External speaker KES-5 can be installed for KCT-60.■ Connection procedure1. Remove the ACC. cap on the rear of the transceiver.2. Connect the D-sub connector of the KCT-60 to the D-sub15-pin terminal of the transceiver.3. Insert the two crimp terminals of the KES-5 to pins 3 and12 of the square plug.4. Connect the square plug to the 15-pin connector of theKCT-60.Note:You must set up using the KPG-141D.Before the external speaker can be used, you must as-sign one of the keys as “External Speaker”, using theKPG-141D.Square plugKCT-60131415101112789456123123Black leadBlack/White leadINSTALLATION5. Changing Serial Port Level5-1. Change FNC1 (TXD) and FNC2 (RXD) of D-SUB15-pin connector from TTL level to RS-232C levelFNC1 (TXD /6pin ) and FNC2 (RXD /7pin ) of D-SUB 15-pin connector are configured at the TTL level as the defaultvalue. But you can change these serial port level to RS-232C level through the RS-232C level converter IC (IC516)by confi guring the port.Remove the R664, R635 and R662 chip jumpers and sol-der the chip jumpers to R666, R633 and R665.5-2. Change FNC1 (TXD), FNC2 (RXD), FNC3 (RTS)and FNC4 (CTS) of D-SUB 15-pin connector fromTTL level to RS-232C levelFNC1 (TXD /6pin ), FNC2 (RXD /7pin ), FNC3 (RTS /8pin )and FNC4 (CTS /9pin ) of D-SUB 15-pin connector are con-figured at the TTL level as the default value. But you canchange these serial port level to RS-232C level through theRS-232C level converter IC (IC516) by confi guring the port.Remove the R664, R635, R662, R659, R658 and R632chip jumpers and solder the chip jumpers to R666, R633,R665, R663, R660 and R630.56 1516 1920R664 R635 R658 R632R797R796R662IC703R659TX-RX unitComponent side56 1516 1920R664 R635 R658 R632R797R796R799R798R666 R665R662R663R633 R660 R630+IC703R659■ In the case of 5-1.[TTL level]R664,R635 and R662: 0 chip jumper.R666, R633 and R665: open.[RS-232C level]R666, R633 and R665: 0 chip jumper.R664, R635 and R662: open.■ In the case of 5-2.[TTL level]R664, R635, R662, R659, R658 and R632: 0 chipjumper.R666, R633, R665, R663, R660 and R630: open.[RS-232C level]R666, R633, R665, R663, R660 and R630: 0 chipjumper.R664, R635, R662, R659, R658 and R632: open.6. Changing of Signal Type6-1.Change signal output of D-SUB connectorfrom DEO to AFOThe output (4pin) of D-SUB 15-pin connector is config-ured at the DEO as the default value.Remove the R796 chip jumper and solder the clip jumperto R798.6-2.Change signal input of D-SUB connector fromDI to MI2The input (5pin) of D-SUB 15-pin connector is configuredat the DI as the default value.Remove the R797 chip jumper and solder the clip jumperto R799.