Instrument Malfunctions - Leica HistoCore AUTOCUT Instructions For Use Manual

Problem
Noises during sectioning
The knife "sings" when
sectioning hard specimens. The
sections show scratches or
chatter marks.
High blade consumption
7.3

Instrument malfunctions

The following is a list of the most common problems which can arise while working with the instrument,
along with possible causes and troubleshooting procedures. If the malfunction cannot be remedied with
any of the options listed in the table, or the problem occurs repeatedly, inform Leica Biosystems Service
Support immediately.
Problem
No display; no reaction to
buttons pressed after the
instrument is switched on.
HistoCore AUTOCUT
Possible cause
• The sectioning speed is too
fast.
• The clearance angle is too
wide.
• Insufficient clamping of
specimen and/or knife holder.
• Retraction is switched off
during sectioning of resin /
plastic embedded specimens.
• Too great of a sectioning force
was applied.
• Too sharp clearance angle.
Possible cause
• The power cable is not
connected correctly.
• Power fuses are defective.
• The cable of the control panel
is not connected correctly.
• The voltage selection switch is
set incorrectly.
Troubleshooting
Corrective action
• Select a slower sectioning
speed.
• Systematically decrease
the clearance angle until
the optimum adjustment is
obtained.
• Check all screw and clamp
connections on the specimen
holder system and the knife
holder. If necessary, tighten
the levers and screws.
• Switch on retraction.
• Adjust the sectioning speed
and/or section thickness when
trimming. Select a smaller
section thickness, rotate the
handwheel more slowly.
• Adjust the clearance angle.
Corrective action
• Check the connection of the
power cable.
• Replace power fuses.
• Check the connection of the
cable to the control panel.
• Check the voltage setting and
correct it if necessary
P. 36 – 4.5.1 Checking the
voltage).
7
(→
105