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PROmax HD Ranger Ultralite Manual

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Cap. 9: MAINTENANCE 117 December 2020
9 MAINTENANCE
Instruments returned for repair or calibration, either within or out of the
warranty period, should be sent with the following information: Name of the
Company, name of the contact person, address, telephone number, receipt (in
the case of coverage under warranty) and a description of the problem or the
service required.
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.
The equipment consists of a metallic case and a TFT screen. Each element has
its specific cleaning treatment.
►Cleaning the Screen
The TFT screen surface is VERY DELICATE. It has to be cleaned with a soft fabric
cloth (cotton or silk), always making the same move from left to right and from
top to bottom, without putting pressure on the screen.
The TFT screen has to be dry-cleaned or with a product specifically designed for
TFT screens, by slightly dampening the cloth. NEVER use tap or mineral water,
alcohol or conventional cleaning products, because they contain components
that can damage the screen.
Turn off the equipment to locate dirt on the screen. After cleaning, wait a few
seconds before turning on.
9.1 Instructions for Returning by Mail
9.2 Considerations about the Screen
9.3 Cleaning Recommendations
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