As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS - SGL SOURCE DISPLAYS. STATUS MSG - C DPC. INTRMTNT FLIKR DISPLAYS FOUND DPC C ON STATUS PAGE, WENT TO CENTER DPC ON CAPT AND F/O SELECTOR PANEL AND FOUND NO SCREENS OPERATIONAL. REMOVED AND REPLACED CENTER DPC PER AMM 31-63-04 CONFIRMED S/W WITH NO FURTHER DEFECTS FOUND. REF L/P 6209973 FOR REPLACEMENT OF R/H DPC WHICH WAS ON MEL THAT CAUSED A SINGLE SOURCE MESSAGE DUE TO 2 INOP DPCS.