As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPT SIDE RADAR SELECTIONS APPEAR NOT TO CONTROL ANY FUNCTION OF RADAR SYS. NO TERRAIN FEATURES APPEAR ON HSI AND ALSO IF "WX" AND "TERR" ON CAPT SIDE ARE DESELECTED RADAR STILL PAINTS BUT NO TERRAIN AT ANY TIME. WHEN FO'S "WX" S W IS SELECTED OFF THE CAPT SIDE SHOWS "WEATHER FAIL" ON HSI. REPLACED CTR EFIES SYMBOL GENERATOR REF MM AND WX RADAR SYS. CKD NORMAL.