General operation lamp replacement (lower illuminator) [model 1242mm only] before attempting to replace or remove the lamp, unplug the microscope from any power source. Replace the lamp by gently laying the microscope on its side and opening the trap door located on the bottom of the base. Loosen th...
Fine tuning can be done by opening the aperture iris diaphragm until the light field almost fills the entire field. If what is seen through the eyepieces resembles figure 1c, alternately rotate the aperture iris diaphragm centering knobs until the light field is centered as in figure 1d. The upper i...
