What was found
PERFORMING BEFORE T/O CHECKLIST FLT CONTROL CHECK, LEFT INBOARD AILERON WAS SLOW TO FOLLOW OUTBOARD. SPOILERS EICAS + DISCREET LIGHT, PERFORMED QRH, RETURNED TO BLOCKS. AIRCRAFT GROUNDED BY MAINTENANCE. MAINTENANCE PERFORMED RESET ON SCM PER 27-09 FT 808. RESET PCA RH FAULT BALL. PERFORMED OPS CHECK OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.