Welch Allyn LumiView Portable Binocular Microscope - User Manual - Manual (Page 21)

17
Troubleshooting Guide
Illumination spot is too high 
and is out of field of view.
Make sure you are 14" to 16" from 
patient or object under inspection. 
If you are too close, the illumination 
spot will be too high.
Make sure optical section is aligned 
with user’s eyes. Suggest looking into 
the instrument when on user. The user’s eyes
should be centered vertically on

the center mirrors.
To correct A and B, simply loosen screw 
on back of optical section and adjust 
optical section up or down until image 
is centered.
User encounters glare off of the
pneumatic insufflation system. Clean the glass section with alcohol 
swab or clean cotton cloth.
Rotate pneumatic assembly 
until glare dissipates.
Problem Solution