9. Trouble Shooting
Problem
Phase contrast
Phase contrast cannot be adjusted.
Camera's remote control is not sensitive
36
Cause/remedy
The specimen is too thick, too thin or too
brightly stained.
Refractive indexes of the mounting medium
and specimen are identical, so that there is no
phase jump.
The cover slip is not placed uniformly.
Check that the correct light ring is positioned.
Check that the correct light slider is positioned.
Open the aperture diaphragm completely.
The battery of remote control is low, battery
needs to be changed.
The IR reflection shield does not be placed cor-
rectly to reflect the IR signal to the sensor.