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Leica RM2125 Troubleshooting Guide
Problem
2. Compressed sections (sections are extremely compressed,
wrinkled or jammed together)
a) Compressed
b) Wrinkled
c) Jammed
Cause(s) / Corrective Action
I) Dull knife/blade.
a) Use a different part of the cutting edge or use a new knife/blade.
II) Blade/knife is gummed up with paraffin
b)
Clean knife with a swab moistened with Xylene. Stroke the swab in an upward motion away from the blade edge, not down on the blade edge.
III) Specimen is too warm.
c) Pre-cool the specimen on a cold plate.
d) Cool the specimen in iced water or with an icecube.
e) Use freeze spray immediately before sectioning. (NOTE: Some labs prohibit the use of this spray, please advise.)
IV) Clearance angle is too big.
f) Clearance angle adjustment: Systematically decrease the clearance angle until the optimum adjustment is obtained.
g) Check the leaf spring screw for washers and tightness.
V) Leaf spring is worn.
h) Replace the leaf spring. Part number: 14050229557
i) If the new leaf spring does not solve the problem, then replace the locking lever. A service call is required for this.
j) Check angle of pressure plate facet to see if correct. Refer to User Manual, page 29-30.
VI) Paraffin buildup on the back of the pressure plate.
k) Clean knife with a swab moistened with Xylene. Stroke the swab in an upward motion away from the blade edge, not down on the blade edge.
VII) Knife blade is not parallel with pressure plate.
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