ADA INSTRUMENTS A00685, Operating Manual, Page: 7 / 28

7 English
FREQUENTLY ASKED QUESTION
Symptom Cause Measures
The device is not
switched ON
IR image is not
clear
Visible light
image is not
clear
Low battery
Plug of external
power source is not
inserted properly
Battery life expires
Lens have misted up
or been polluted
Surrounding environ-
ment is too dark
Reuse battery after charging
Pull the plug and reinsert it in
proper place
Replace with new battery
Clean lens with specialized
equipment
Change parameter settings
or reset settings