69
Leica RM2255
7. Troubleshooting
7.2 Possible faults
Problem Possible cause Corrective action
1. Thick/thin sections
The sections alternate between
being thick and thin, or there is
chattering in the sections, or the
specimen is torn out of the em-
bedding. In extreme cases, there
are no sections whatsoever.
• Blade, knife holder or orientation
is not clamped properly.
• The specimen is not clamped
properly.
• Reclamp the blade, knife holder
or orientation.
• Check that the cassette is se-
curely clamped in the universal
cassette clamp.
• If the universal cassette clamp
is soiled by wax, clean the UCC
(refer to Chapter 8.1 - "Cleaning
and Maintenance - Universal
cassette clamp").
• When using cassettes whose
lid is molded on, check that the
broken edge allows the cassette
to be clamped securely; if neces-
sary, remove burrs or clamp the
cassette into the universal cas-
sette clamp horizontally instead
of vertically.
• If the cassette dimensions are
within the specified
tolerances and the cassette still
cannot be securely clamped into
place, it may be that the univer-
sal cassette clamp is configured
incorrectly or is defective. In this
case, have Technical Service
inspect and reconfigure the
universal cassette clamp.
• When using cassettes, par-
ticularly thin-walled cassettes,
from a company other than
Leica or Surgipath, the cassette
may become deformed or other
clamping problems may arise.
If while trying to clamp the cas-
sette you realize that it is not
securely clamped into place,
an alternative tensioning clamp
must be used.
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