What was found
FMC RANGE DISAGREE, NO ALTIMETERS ONLY FLIGHT INSTRUMENTS WERE AIRSPEED AND ATTITUDE. FLIGHT CONTROL PANEL BLANK. TROUBLESHOT SYSTEM ELECT SYNOPTIC PAGE REVEALED RT PCDU AT FAULT. ALSO CONFERRED WITH BOEING, AGREED THAT R/HG PCDU FAILURE CAUSED THIS PROBLEM. REMOVED AND REPLACED PCDU IAW MM 24-21-04-000-803. SYSTEM OPS CHECKED NORMAL.