CRYSTAL ROOM SOLUTION

 
 
Before moving the mechanical device you must test the touch sensitive pad in the far left corner.
 
The crystal poles can be rotated either clockwise or anti-clockwise. The two ninety-degree spokes on the rings on the poles indicate the direction the energy beam comes from and where it gets deflected to.
 

 
To access the stairs the mechanical device must be moved to the left. The energy beam therefore needs to be directed towards the device from Pole 5 in the graphic.
 
01) Rotate POLE 1 once clockwise to deflect the energy beam onto POLE 2
02) Rotate POLE 2 twice (either way) to deflect the energy beam onto POLE 3
03) Rotate POLE 3 once clockwise to deflect the energy beam onto POLE 4
04) POLE 4 is already positioned to deflect the energy beam onto POLE 5
05) Rotate POLE 5 once anti-clockwise to deflect the energy beam onto the device
 
When the device moves you find the second touch pad. Test the second touch pad to learn that it lights up the remaining four lights on the lightning symbol above the door. The door at the top of the stairs leads to the floor tiles room (where you left Nico) and she follows you back down the stairs to the crystal room.
 
Talk to Nico about the panel and she suggests using both touch pads simultaneously. Note that she only gives this response if you've previously tested both pads yourself.
 
Return to the adjoining room and reverse the flow of the energy beam by using the touch pad on the connected mechanical devices. Doing this pulls the device in the crystal room back to its original position. When you now use the first touch pad Nico will automatically press the second one at the same time.
 
Before going through the door with the lightning symbol, you must again reverse the flow of the energy beam to move the device so that Nico can join you!