24
23
The unit is equipped with a Weaver rail (15) which allows the user to 
mount extra accessories (please remove the IR Illuminator before using 
the rail), such as:
22
Wipe external plastic and metal surfaces clean of dust and dirt with a 
soft cloth moistened with a synthetic cleaning agent. 
Clean the electric terminals of the Battery Pack and unit's battery slot 
using a grease-free organic solvent.
Check the objective and eyepiece lenses. If required, remove dust 
and sand (preferably by a noncontact method). Clean the external 
surfaces  of  the  lenses  with  products  expressly  designed  for  this 
purpose. 
Maintenance should be carried out at least twice a year, and should 
consist of the following measures: 
Always store the unit in its carrying case in a dry, well-ventilated 
space. For prolonged storage, remove the battery. 
The table presented below lists some potential problems that may occur 
when  using  the  unit.  If  a  problem  encountered  is  not  listed,  or  if  the 
recommended action does not resolve the problem, the unit should be 
returned for repair. 
24
25
26
23
The unit will not turn 
on.
The unit does not 
operate on external 
power supply. 
Battery Pack is discharged.  
USB cable is damaged.
Brightness or contrast level 
is too low.
Charge the battery.
Replace USB cable.
Adjust brightness/contrast level.
Check
Corrective action
Problem
External power supply is 
discharged.
Charge the external power 
supply (if necessary).
Image is too dark.