What was found
AFTER TAKEOFF, GEAR RETRACTION FLAPS POSITIONED FROM 5 TO 1 BUT THEY DID NOT MOVE. TRIED RECYCLING LEVER BUT NOTHING HAPPENED. LOWERED FLAPS USING ALTERNATE FLAP SWITCH. AIRCRAFT RETURNED AND MADE UNEVENTFUL LANDING. RESET THE TRANSFER VALVE, CLEANED FLAP POSITION INDICATOR CANNON PLUG, SERVICED B SYS. OPS CHECK ON GRD FOR FLAPS PER BOEING MM.