Samsung AM007FN1DCH/AA Service Manual page 157

Disassembly and Reassembly
No. Parts
2 Control Box
3-100
Procedure
3) Reomove the 1 screw which is fixed to the
Indoor Unit upper part.(Use +Screw Driver)
4) Put finger in the "PULL" marked groove and
then pull up the Cover
5) Put finger in the "PULL" marked groove
and then avoids the hook and it opens the
Control Box Cover
Remark
Samsung Electronics