Saab R5 SUPREME MkII Operation & Installation Manual

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Saab R5 SUPREME MkII Operation & Installation Manual Manual pdf 126 page image

R5 SUPREME - Navigation SystemTROUBLESHOOTING7000 118-383, P11A1 Page 12613 TROUBLESHOOTINGOne of the basic ideas with troubleshooting is to solve a supposed problem on site instead ofimmediately sending the suspected part for a costly repair. Solving a supposed problem wouldin this aspect mean both to rectify the real problem, but it could also mean that the suspectedpart is confirmed to be working or not.Historically, many of the parts sent to TransponderTech for repair have in fact been confirmedworking instead. Another common scenario is that the equipment has faulty I/O settings orother erroneous configurations, easy to fix on site. A proper troubleshooting would ideallyprevent those unnecessary returns of fully functional equipment.There are numerous ways to troubleshoot a navigation system installation, much dependanton the skill and experience level of the trouble-shooter. The preferred approach may probablyalso differ between different individuals, and there is no such thing as right or wrong.This chapter is not intended to be a step-by-step troubleshooting instruction, but instead offera toolbox with some different techniques on how to troubleshoot the R5 SUPREME NavigationSystem.13.1 Troubleshooting with the CDU Front Panel LEDsIt is very fast and effective to use the LED’s to verify the status of the R5 SUPREME CDU.This should always be the first step in the troubleshooting.STATUS LED (multi-coloured)- The STATUS LED is constantly lit green when the R5 SUPREME Navigation Systemis operating and no alarms are active.- The STATUS LED is constantly lit red if there is one or more acknowledged activealarms in the system, but no unacknowledged alarms. Refer to section 14.2 forinterpretation of the alarms.- The STATUS LED is flashing red if there are one or more unacknowledged alarms inthe transponder. Refer to section 14.2 for interpretation of the alarms.If neither of the colours are lit, nor flashing, then check the power supply and make sure that: The voltage is correct and stable The polarity is correct and not switched The available current is sufficient for start up The external fuse is functional The power cable is undamaged The power connector is properly connected and securedAlso check so that the LED backlight is not completely turned off in the Visual Settings viewaccessed from Main Menu  Maintenance  Configuration  Display  VisualSettings.