Chapter 2. Operating Instructions
Chapter 3. Troubleshooting
14
PNP-MC
- Operator’s Manual
PNP-MC
- Operator’s Manual
7
Table No. 4
General troubleshooting
Chapter 2
OPERATING
INSTRUCTIONS
CAUTION
The PNP-MC is a delicate
electro-optical
device - handle it with care!
WARNING
Permanent damage to the PNP-MC
may result if the PNP-MC is used in
normal room illumination or bright
ambient light. Do not direct the
PNP-MC at a bright light source such
as the sun, street lights, vehicle
lights, or other bright light source,
otherwise permanent damage may
occur to the image intensifier tube.
No
Symptom
Probable
Corrective
Cause
Actions
1
No visible
a. Objective lens
a. Remove cap.
image
cap has not
been removed.
b. Battery cover
b. Tighten cover.
loose.
c. Incorrect
c. Re-insert
Battery
Battery
polarity.
correctly.
d. Weak Battery.
d. Replace
Battery
e. Iris closed
e.Open Iris
2
Persistent
a. Faulty
a. Send unit to
Image
intensifier
repair/
Flickers.
tube.
maintenance
facility.
3
Poor
a. Dirty or fogged
a. Clean lens with lens
image
objective lens.
cleaning tissue.
quality
If lens is internally
fogged, send unit to
repair/maintenance
facility
b. Eyepiece out of
Adjust diopter ring
focus
to bring picture into
focus
2.1 Battery installation
1)
Ensure operating switch is in
OFF position.
2)
Open battery compartment cover by
unscrewing cap.
3)
Insert battery into compartment, notice
the polarity marking (see Fig. No. 3).
4)
Close battery compartment cover
5)
A low battery warning indicator is built into
the PNP-MC which gives an amber glow
at the edge of the image when looking
through the eyepiece.
2.2 Operation
1)
Prior to use remove protective lens cap.
2)
Turn the operating switch to ON.
3)
Adjust eyepiece diopter until the sharpest
phosphor screen is obtained.
4)
Adjust objective lens focus ring while
observing an object until the sharpest
image is obtained. - Repeat 3 if necessary
5)
Ensure that the iris is open on the lens.
6)
To activate the I.R. illuminator turn the
operating switch to ON, then pull
outwards and turn further to the I.R.
position. When the I.R. illuminator is
switched on a red LED warning glow can
be seen at the edge of the image when
looking through the eyepiece.
