From
this Picture, it means the fiber is not in the V-groove, or the microscope lens
is worn out.
Solution:
1. Clean
the V-groove. Please use the blade to clean the V-groove carefully, to confirm that
there is no dust in the V-groove, the dust will block the fiber into the
V-groove.
2. Clean
the microscope lens with a cotton swab dipped in alcohol.
microscope
lens（there
are two，in
this picture, this one is for Y ）
1. Adjust
the brightness of Y value
Image
Setting
Auto
Gain