●The light does not turn on.
Ensure that you are using new batteries. Replace any batteries that have run out of power. (Please note that rechargeable zinc-carbon or NiCd batteries and non-rechargeable Oxyride batteries should not be used.)
If the batteries are found to be free of problems, check the lead wires and metal contacts. If you find poor alignment of components at the bulb socket, switch contacts, or metal contacts, rectify the condition in order to ensure that electricity can flow unimpeded.
●The bulb has burned out.
Use a commercially-available bulb for replacement. The bulb included with the supplement kit is frosted to prevent the shape of the filament from being projected. Although this type of bulb is not commercially-available, any standard miniature lamp with a rating of at least 2.5-V, 0.5-A will suffice.
If you do start to notice the shape of the filament during projection, it can be hidden by inserting tracing paper or the like in front of the bulb.
●The projector is out of focus and the projected image is not clear.
[Check the distance between the kaleidoscope and the projection surface.]
Projected images will be out of focus if the distance between the projector and the projection surface is too close. In such a case, move the projector back gradually until the image becomes clearly defined. Care should also be taken to prevent the lens getting dirty as this too can lead to blurry images.
[Check the angle of three mirrors.]
The angle at the apex of the isosceles triangle formed by the three mirrors must be 30 degrees.
[Check that the protective sheets of the mirrors have been removed.]
Each of the three mirrors ships with a thin, transparent protective sheet attached, and these must be removed in order to ensure clearly projected images.
●Precautions regarding protective sheets
Normally, supplement-kit mirrors come with a protective sheet on each side; however, one side may have two protective sheets applied in certain cases. Specifically, note that if the color of the protective sheet is blue, it will indicate that two sheets are applied. The second sheet is thin, transparent, and located underneath the blue sheet. Ensure that both are removed. Failure to observe this precaution can lead to the blurring of projected images. | 
