Navico MX420 Installation & Service Manual
Also see for MX420: Operator's manual
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Contents
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72MX 420 Installation and Service ManualProcedure:1. Install the download program dlmx400.exe, dos4gw and the *.hex file in the samedirectory (i.e. MX Marine).2. Using a pre-made Power/Download cable, connect the power cable to the powersupply. Black wire to ground and blue wire to +12-24V.3. Connect the DB9 connector to COMM1 (RS232) serial port of the PC.4. Connect the 18-pin connector (or Cable A) to the MX420/MK12.5. Turn the MX420/MK12 on to verify if power connection is correct. Turn it offagain.6. The download program runs much faster under DOS than under Windows.However, if a DOS-PC is not available, you can also use the DOS promptunder Windows 95, 98, NT, etc.7. At the command prompt type dlmx400 *.hex. (where *.hex is the program filename)8. The program will ask you to turn the navigator on. When this has been donethe file will be loaded into the download program and after a short while ashort line starts to turn in the right hand side of the computer screen.9. The traffic lights will turn from red to yellow and then to green.10. When the download is finished the computer will return to the DOS prompt.Turn the main power supply switch OFF and ON and verify the programversion in the AUX 7 display. Under the AUX7 screen, press the left-mostsoftkey 3 times to show the complete program build number (i.e. V1.5(751).Hint:It is highly recommended that the MX420 navigator be cold started afterdownloading the program. Please note that all settings including waypoints androutes will be lost.This is important to flush out the residual memory, which may cause problemswith the operation of the unit.Memory Clear Procedure:1. After downloading the software, turn the power off to the MX420 by turningoff the 12 VDC circuit breaker (this may also be accomplished by removingthe “Cable A” from the back of the unit).2. Press and hold down the right-most softkey.3. Apply 12-volt power to the unit and wait for about 5 seconds. The MX420will come on and display the MX Marine logo.4. Release the softkey.5. The memory is now cleared. |
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