15
Electrical
Problem
Possible cause
Lamp does not light
Power supply not plugged in
Lamp not installed
Lamp burnt out
Inadequate brightness
Specified lamp not being used
Lamp blows out immediately
Specified lamp not being used
Lamp flickers
Connectors are not securely
connected
Lamp near end of service life
Lamp not securely plugged into
socket
Problem
Possible Cause
Insufficient parfocality of objectives
Eyepiece diopter not adjusted
No cohesion of binocular image
Magnification or field of view of left and right eyepieces differ
Interpupillary distance not adjusted
Eyepiece diopter not adjusted
Eye strain or fatigue
Interpupillary distance not adjusted
Diopter adjustment not made
Field of view of left and right eyepiece differ
Inadequate illumination
