What was found
AVIONICS FAN FAIL(AVNX FAN FAIL) CAS MESSAGE ILLUMINATED DURING COCKPIT SETUP. STRONG BURNING ODOR NOTICABLE IN COCKPIT AND CABIN. OCCURRED WITH & WITHOUT GROUND POWER POWERING THE AIRCRAFT. POWERED AIRCRAFT & VERIFIED AVNX FAN NOT RUNNIGN PERFORMED FIM 31-41-00-810-801-A, FAILURE OF THE AVIONICS BLOWER. RESETING AVNX FAN CB FOR 5 SECONDS & PUSHING BACK IN DID NOT RESTORE FAN. GAINED ACCESS TO BLOWER FAN CONNECTOR P0034 & VERIFIED POWER AT PINS 1 AND 3 TO HAVE 24VDC. WITH FAN STILL INOP IAW MM 31-41-07-000-801-A. INSTALLED NEW AVNX BLOWER FAN ASSEMBLY IAW MM 31-41-07-400-801-A. PERFORMED OPS CHECKS OF THE AVNX BLOWER FAN & ALL CHECKS GOOD IAW MM 31-41-07-400-801-A AND NO CAS MESSAGES.