Promax HD RANGER, Руководство пользователя

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8 MAINTENANCE
8.1
Considerations about the Screen
This paragraph offers key considerations regarding the use of the colour screen,
taken from the specifications of the manufacturer.
In the TFT display, the user may find pixels that do not light up or pixels that are
permanently lit. This should not be regarded as a defect in the TFT. In
accordance with the manufacturer quality standard, 9 pixels with these
characteristics are considered admissible.
Pixels which are not detected when the distance from the surface of the TFT
screen to the human eye is greater than 35 cm, with a viewing angle of 90°
between the eye and the screen should not be considered manufacturing defects
either.
It is advisable a viewing angle of 15 ° in the 6.00 o’clock direction in order to
obtain the optimum visualization of the screen.
8.2
Cleaning Recommendations
CAUTION
To clean the cover, take care the instrument is disconnected.
Do not use scented hydrocarbons or chlorized solvents. Such products may
attack the plastics used in the construction of the cover.
The cover should be cleaned by means of a light solution of detergent and water
applied with a soft cloth.
Dry thoroughly before using the system again.
Do not use for the cleaning of the front panel and particularly the viewfinders,
alcohol or its derivatives, these products can attack the mechanical properties of
the materials and diminish their useful time of life.
August 2012 8-67