[CA] [CA11] RD218 passes all diagnostics but shows no image on c120

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Yourmomm,

The Radar diagnostics of a C/E-Series Classic MFD may be accessed via the command sequence MENU->SYSTEM DIAGNOSTICS->EXTERNAL INTERFACES->SCANNERS. Both Diagnostics and Self Test Results may be accessed via this command sequence. However, given the problem reported, there may be
- a fault with the radome's settings (command a scanner reset (accessed from the Radar application's Advanced Radar Setup menu (MENU->RADAR SETUP->ADVANCED RADAR SETUP),
- a fault with the radar cable (test the radar cable and replace if found to be faulty),
- a fault within the radomes circuitry (radomes which were designed to be compatible with the C-Series Classic MFDs may no longer be serviced by Raymarine's Product Repair Center), or
- a fault with the MFD's radar processing circuitry (not likely, as the problem has been duplicated with two MFDs).

Should the scanner reset not correct the problem and should there be no fault identified with the radar cable, then the fault would appear to be rooted within the radome's circuitry, necessitating its replacement.