Emblemdhc

      Sir KDA-689 is use for showing information (distance) on both PFD 
KDA take data and convert it to ARINIC 429 and share it with IAPS( integrated avionics Processing system ) it contains various types of LRM ( Line Replacble module) like 1. Power ,FMC , IOC, CSU ,FGC) 
Aircraft Avionics from ROCKWELL Collins Pro line 21 and radio from GARMIN
 
VOR/ ILS. frequency Working fine only problem with DME

We also check system while KDA-689 connector unplug  but Same problem exists

is there any way to bypass the nose junction box PN333