20. Technical Inspection
We suggest inspect the device every time before using it.
⚫ Appearance: no crack on the shell;
⚫ Status of object lens and eye piece (No crack, oil stain, dirt or other stains);
⚫ Status of rechargeable battery (charged before using) and electrical contact (No salt or
oxidation).
21. Maintenance
The scope should maintenance twice per year at least, including:
⚫ Wipe the metal and plastic external surface of the scope, wipe out dust and dirt. May
use silicone grease during the cleaning process.
⚫ Clean electric contacts and battery jar with no greasy organic solvent.
⚫ Check the surface of object lens and eye piece. If necessary, clean the dirt and sand on
the lens (better avoid direct contact). Use specific wiping tools and solvents to clean
the surface of lens.
22. Trouble shooting
The following table lists all potential issues of the device. Inspect and fix your device based
on the suggestions in the table. If there are any issues that not included in the table or users
cannot fix it themselves, users should contact sellers for overhaul.
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