5Remove the panel (rear).
*Be careful not to drop the water immersion protective rubber (indicated by ●).
*Replace the packing of the disassembled part with a new one.
*When replacing the packing, be careful not to twist it.
6Remove the light receiving board holder clamping screws (two PTT screws 4 x 16, indicated by ●).
*Replace the packing of the disassembled part with a new one.
*When replacing the packing, be careful not to twist it.
7Remove the light receiving board from the holder. Remove the two claws (indicated by ●).
*Replace the packing of the disassembled part with a new one. *When replacing the packing, be careful not to twist it.
*Precautions when replacing Product
Cautions:
●Reverse the order to replace the Product.
●Make sure that the proper functioning of the unit is restored when the repair is complete.