Pioneer RM V2550BU - Manual (Page 158)

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2. NOT MALFUNCTION
¶ In some cases, the screen from appear bluish when seen from the left and slightly reddish when seen from
the right. This phenomenon called color shift is inevitable due to the structure of the projection system in
which the R G, B tubes are lined up and light is projected from the rear.
¶ When bright images are displayed in the dark, the light reflected on the lens will shine in the darkness
slightly. This phenomenon called tube-inside reflection is inevitable due to the structure of the projection
whose CRT light has been expanded using the lens. [Fig. 6-1.]
[Fig.6-1]
Reflected light