Yukon 24021 Manual 

Contents

Yukon 24021 Manual  Manual pdf 4 page image

STORAGEAlways store the NVMT (in its case) in a dry, well-ventilated area away from heating/airconditioning vents (or other heating devices). Temperature should be +10°C. Humidity should notexceed 70%.Remove the battery if the device is to be stored for longer than 2 months.TROUBLESHOOTINGThe scope will not turn on...Check that the battery is installed properly. Install the battery according to the (+) and (-) polarity,ensuring that the markings on the battery and battery compartment correspond with one another.Check the battery contact to ensure it is clean and free of corrosion; if necessary, clean the contact.Make sure that the external contact lug is not broken. If necessary, replace the battery as it may bedepleted. Also, be sure that the power is in the “ON” position when trying to turn on the scope.Distinct black dots appear on the screen...These dots are minor cosmetic blemishes resulting from tube production processes and do notinterfere with the reliability or performance of the scope.The scope flickers, flashes or “snows”...The scope may flicker or flash when used in a bright environment; to correct this, place the cap overthe objective lens and enter a dark environment. The scope will restore itself to a natural functioningstate in several minutes or hours, depending on how long the scope had been exposed to the light.The scope may flicker for the first several seconds of use, even when in a dark environment, beforethe scope corrects itself and functions properly.The scope may “snow” for several minutes after being exposed to a bright light source (daylight, acar's headlights, fire, etc.) even if being operated in complete darkness.The image is not focused...Adjust the focus of the eyepiece and the objective (see Use and Testing). Check that the lenses arenot foggy or dusty; if they are, carefully clean the external surfaces of lenses with a soft cotton fabric.Replace the battery if the total battery charge is less than 2.0 V.When the unit is brought into a warm environment from a cold one, condensation may appear onthe internal lenses; you must wait two hours before using the unit.Visibility decreases or disappears...Bright light sources, such as headlights, may cause visibility to decrease or disappear and the imageto flicker. Turn the power off and turn the scope away from the light source; visibility will restoreitself in several minutes.

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