What was found
FLIGHT RECORDER OFF LIGHT STAYS ILLUNINATED. RESET NO HELP. MEL 2310B DFDR HAS BEEN REPORT - DEFERRAL REQUEST IS FOR THE CVR SWAPPED IN DFDR, NO HELP, REINSTALLED ORIGINAL DFDR, MM 31-31-00. REPLACED DFDAU, UPLOADED CURRENT SW, NO HELP, MM 31-31-00. ITEM DEFERRED REQUIRES FURTHER T/S, REF. FIM 31-31 TASK 805. *DM* M/L UPDATED WITH R263 00-0363-3-0156 AND P5-19 29-3111-9-0014 AS IDENTIFIED IN THE FIM. PERFORMED BITE CHECK OF FDR AND FOUND FOUR FAULTS, VERIFIED DC POWER AT FDR D183A PIN23 TO GROUND. VERIFIED AC POWER AT FDR D183A 1 TO GROUND WHEN FDR SWITCH IS PLACED IN TEST MODE. POWER CHECKED GOOD. VERIFIED GROUNDS AT FDR D183A PIN 6 AND PIN 2. GROUNDS ARE GOOD. CHECKED FDAU STATUS RELAY D1805 WORKED WITH TECH SUPPORT FOR FURTHER WIRING CHECKS REF WDM 31-31-11. SUSPECT FDR BAD FROM STOCK, REPLACED FDR REF AMM 31-31-11. OPS CHECK GOOD.