Leica DM1000 LED manual Start-up, Switching on the Microscope, Köhler Illumination

7. Start-up

7. Start-up

7.1 Switching on the Microscope

•Switch on the microscope with the on/off switch (24.1)

Caution!

After turning on the gas discharge lamp*, the burner must be immediately adjusted. Therefore, do not turn on the power supply* unit yet. First, work in transmitted light in or- der to familiarize yourself with the micro- scope’s controls.

7.2 Köhler Illumination*

The condenser is also pre-adjusted in the factory.

However, it may be necessary to re-adjust the condenser in some cases. Therefore, check the condenser centering.

The following procedure is provided for the transmitted light brightfield illumination.

•If present click the condenser disk* into the BF position

•If present pull the light ring slide* out of the condenser

Fig. 24

1On/Off switch

2Focus wheel

3Stage positioning

• Select an objective with moderate magnification (10x-20x);

for condensers with movable condenser heads:

Swing in the condenser top

(The condenser top is swung out for objective magnifications < 10x.)

•Insert the specimen into the stage’s specimen holder

•Focus on the specimen using the focus wheel (24.2)

•Set the light intensity using the brightness control (25.2)

•Close the field diaphragm (25.3) until the edge of the diaphragm appears in the specimen plane (26a)

1 2 3

28