What was found
EN ROUTE DISPLAY SOURCE INTERMITTENT ON F/O DUS-CONTACTRD MX TOLD TO RETURN TO GUM. ENTER FOR EMP C3610 LEG 01 SHOWED 2 INTERMIT FAULT31-60012 SUSPECT LRU DEU AND 31-6 0042 DEU SOFTWARE RESET. NO EXSITING FAULT. REPLED NR 2 DEU PRE- CAUTIONARYPER FIM31-62-00-810-806,31-62-00-810-810. REPLED NR 2 DEU PER AMM 31-62-21 AND CDS BITE PER 31-62TASK 801 NO CURRENT FAULT.PERFORM LAND VERIFY TEST PASS AMM22-11-00 ACFT ANN. CAT3A ROTABLE PARTS CHANGE WAS INDICATED - TT # 1439720 SN OFF 01934 31-60012 INTERMIT LRU DEU2 31-60042 INTERNIT DEU SOFTWARE RESET UNIT, ELECTRONI OFF 29-3162-9-0002 1934 ON 29-3162-9-0002 2212