Start-Up; Switching On The Microscope; Köhler Illumination - Leica DM2000 Operating Manual

7. Start-up

7.1 Switching on the Microscope

• Switch on the microscope with the on/off
switch (32.1, 33.5).
Caution!
After turning on the gas discharge lamp, the
burner must be immediately adjusted. There-
fore, do not turn on the power supply unit
yet. First, work in transmitted light in order to
familiarize yourself with the microscope's
controls.
Fig. 32 Leica DM2000
1 On/Off switch
2 Focus wheel
3 Stage positioning
1 2 3
7.2 Köhler Illumination
The condenser is also pre-adjusted in the
factory.
However, in some cases it may be necessary to
re-adjust the condenser. Therefore, check the
condenser centering.
The following procedure is provided for
transmitted light-bright field illumination.
• If present: click the condenser disk* into the
BF position.
• If present: pull the light ring slide* out of the
condenser.
• Select an objective
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 in the stage's specimen
holder.
• Focus on the specimen using the focus wheel
(32.2).
7. Start-up
with moderate
31