A2 ribbon cable was removed in Step 9 of the previous guide. Now remove ribbon cables A3, A4, A5 and A6 by using your fingernail to flip open the ribbon flaps.
With a Ph#00 screwdriver remove screws 9, 10, 11, 12 and 13.
Note that screws 11 & 13 are fastening a stabiliser on some models. These are pictured in the third photo in step 9, and you will need to recall their position for reassembly.