Activate the elements in numerical order: 1-4 to solve this puzzle.
Enter the Storeroom.
Talk to Jackie (W); you will receive the BOY AMULET PART.
Zoom into the doll; take the PIN (X).
Walk down twice.
Zoom into the trunk and insert the PIN into the toolbox (Y); take the OIL CAN (Z), the ELECTRICAL TAPE (A), and the SCREWDRIVER (B).
Zoom into the grating and remove it with the SCREWDRIVER (C); take the 1/2 RUBY (D), the LEAF AMULET (purple), and the TOGGLE SWITCH (E).
Go to the Boys' Dormitory.
Zoom into the light switch and fix the wire with the ELECTRICAL TAPE (green); insert the TOGGLE SWITCH into the niche (F) and push the switch.