Leica DM4000B Manuel D’Utilisation

63

No polarization contrast is possible.

The image is completely dark (no fluorescence).

The fluorescence is too weak.

The display flashes.

FAIL! appears.

Bring the polarizer and analyzer into cross po-

sition until they reach maximum darkness
(without specimen) (

→

     p. 55, 59).

Open the shutter (

→

     p. 57).

Select the incident light axis (IL) (

→

     p. 36).

Check the antigen-antibody combination.

Insert the Booster Lens (

→

     p. 29).

Center the lamp (

→

     p. 41ff).

Insert a new lamp (

→

     p. 20f).

Rotate an appropriate objective for the con-

trast method into the light path.

Check insertion of objectives, cubes, etc.