5
clEANINg ThE EyEpIEcE
you may need to clean the eyepiece of the MO-4 from time to time in order to guarantee top
performance. When you receive your MO-4 you should check for dust on the eyepiece of the
unit.
First you will need to remove the eyepiece. To remove the eyepiece you will need to ini-
tially loosen 2 set screws that can be found on the base. Then unscrew the eyepiece
counter-clockwise to remove it.
NOTE:
You do not have to remove the set screws completely, they are very small and easy to
misplace.
cAuTION:
Use only Photographic lens cleaning tissue on these surfaces. Be careful not to
scratch, or smudge any of these surfaces. When using compressed air to blow dust away, make
sure to avoid inverting the can while spraying. This may cause frozen propellent to exit the can,
which can result in serious damage problems of the glass and phosphor screen.
sTORAgE AND cARE
• If the device is not to be used for an extended period of time (more than 10 days) remove the
battery.
• Avoid touching lenses. If Fingerprints or traces of dirt or dust appear clean surface with a
Photographic lens cleaning tissue.
• Keep the lens cap/daylight filter on when not in use.
• The MO-4 is not harmful to the user or the environment.
• Do not disassemble except to clean the front lens and eyepiece, install the 6x Doubler or any
other “C” mount lens:
it will void your warranty.
• Evaluate the scopes function by looking through it in a lit environment with the daylight filter
lens cap on. Never use in daylight without the daylight filter lens.
•
Never point the MO-4 at a bright light source.
• Adverse atmospheric conditions such as fog, smog or haze and a lack of ambient light (moon
or starlight) may diminish the effective viewing distance.
• If you use the rubber eyecaps for a long period of time, you may suffer skin inflammation. If
you develop any symptoms, consult a doctor immediately.
TROuBlEshOOTINg
Q:
Flashes, flickers or clicking occur while operating
s:
if it occurs within the first five minutes of inserting new batteries it is normal and the device
will resume normal operation soon thereafter. if it occurs for more than 10 minutes contact
aTN for service instructions.
Q:
dark spots on screen.
s:
These are either cosmetic blemishes in the intensifier tube or dust particles. dust particles
can be cleaned following instructions in “Cleaning eyepiece” section.
Q:
screen becomes darker than in previous use.
S: Replace batteries. If the problem persists contact your dealer or other authorized service
representative for service instructions.
Q:
image not clear.
s:
adjust objective lens and/or the eyepiece. Turn on ir.
