Leica Biosystems CM1950 - Manual (Page 36)

36 Instructions for Use V 1.5 RevF - 08/2014
Advancing the specimen toward the knife
• Start the slow forwards movement to the knife.
To feed the specimen, press and hold the button.
• Pressing the button briefly results in a feed motion of 20 µm.
• Start the fast forwards movement to the knife.
• The LED (2) flashes while the specimen head is in motion.
The LED (2) lights up when the forward end position has been reached.
7. Instrument Controls
Coarse feed functions
The electric coarse feed at two speeds is used for a rapid movement of the
specimen towards and away from the knife. With the double-arrow buttons,
the coarse feed operates at 900 µm/s; with the single-arrow buttons, it runs
at 300 µm/s.
Retracting the specimen head from the knife
• Pressing once starts the rapid backwards movement to the rear end
position (Home position).
LED (1) flashes, while the specimen head is in motion.
The LED (1) lights up when the rear end position (Hp.) has been reached.
• The return movement can be stopped by pressing one of the coarse feed
buttons.
• The rapid backwards movement to the rear end position (Hp.) starts.
The advance movement operates as long as the button is pressed.
• A brief press of the button retracts the specimen by 20 µm.
Manual sectioning mode
Select ROCK operating mode (LED active) – retraction must be enabled!
• For sectioning, turn the handwheel a short distance (approx. 1/4 turn)
forwards and back (rocking mode) – only possible at rear (handwheel
in approx. 12 - 3 o'clock position). Every change in rotation direction is
electronically detected and automatically translated into a specimen
feed or retraction movement.
1
2
slow
fast
slow
fast