Saab R5 Supreme Operation & Installation Manual

Also see for R5 SUPREME AIS: Instruction Operation & installation manual Operation & installation manual Installation Short Instruction Installation Short Instruction

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Saab R5 Supreme Operation & Installation Manual Manual pdf 115 page image

R5 SUPREME - Navigation SystemTROUBLESHOOTING7000 118-301, A Page 115TROUBLESHOOTINGOne 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 problemwould in this aspect mean both to rectify the real problem, but it could also mean that thesuspected part is confirmed to be working or not-working.Historically, many of the parts sent to Saab TransponderTech for repair have in fact beenconfirmed working instead. Another common scenario is that the equipment has faulty I/Osettings or other erroneous configurations, easy to fix on site. A proper troubleshooting wouldideally prevent 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 troubleshooter. 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 SUPREMENavigation System.8.4 Troubleshooting with the CDU Front Panel LED’sIt 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.8.4.1 STATUS LED (multi-coloured)- The STATUS LED is constantly lit green when the R5 SUPREME NavigationSystem is operating and no alarms are active.- The STATUS LED is constantly lit red if there is one or more acknowledgedactive alarms in the system, but no unacknowledged alarms. Refer to section9.2 for interpretation of the alarms.- The STATUS LED is flashing red if there are one or more unacknowledgedalarms in the transponder. Refer to section 9.2 for interpretation of the alarms.If neither colour are lit, nor flashing, then check the power supply and make sure that:The voltage is correct and stableThe polarity is correct and not switchedThe available current is sufficient for start upThe external fuse is functionalThe power cable is undamagedThe power connector is properly connected and securedAlso check so that the LED backlight is not completely turned off in the Visual Settingsview accessed from Main Menu  Maintenance  Configuration  Display Visual Settings.8.4.2 RAIM LED (multi-coloured)This LED shows the current RAIM status of the R5 Navigation System.