TM 9-2350-222-10-3
TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
s
34.
COMMANDER'S M36 OR M36E1 PERISCOPE HAS NO NIGHT VISION
OR NIGHT VISION IS FOGGY THROUGH IR BODY OR PASSIVE
ELBOW WHEN ON BATTERY POWER.
CAUTION
s
Perform IR and night checks under low light conditions. When
not in use, a light shutter is provided to protect the elbow
against light exposure and an opaque disk is provided to
protect the IR body. Do not operate elbow or IR body under
daylight conditions unless ballistic shield is closed. These
measures are to prevent damage to the equipment.
Step 1. Check for proper focus.
If not focused, adjust focus.
Step 2. Check to see if periscope lens is dirty.
If dirty, clean lens with lens tissue or soft, clean cloth and cleaning
solution (item 9, appendix D).
Step 3. Check to see if M36 IR body has batteries installed properly with
the positive (+) end towards periscope. Make sure the cap is on
tight.
a. If not, install batteries properly and operate periscope (page 2-354).
b. If installed properly or periscope still does not operate, replace
batteries (page 3-217).
Step 4. Check to see if M30 instrument light for M36E1 passive elbow is
connected properly (page 2-360.4).
a. If not, connect light properly.
b. If connected properly and passive elbow still does not operate,
replace instrument light batteries (page 3-218.2)
c. If periscope still does not operate properly, notify organizational
maintenance.
TA252950
Change 1 3-41
