As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER EICAS WENT BLANK PRIOR DEPARTURE. MAT INTERROGATED SHOWS CPM -GG MODULE M10 AND M11 INTERFACE TO DU INOP. AIMS RESET DONE TO NO AVAIL. MESSAGES CLEARED BUT UPPER EICAS STILL BLANK. UPP AND LWR DISPLAY UNITS SWAPPED AND AIMS MODULES RESET DONE AGAIN. NOW UPPER EICAS DISPLAY OK. LWR EICAS DU RENDERED INOP. REPLACED LWR CENTER DU POS 6, OPS OKAY.