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1. Introduction
This manual provides information on the maintenance of HUVITZ refractor Model
CDR-3100. For the correct maintenance, it is necessary to understand this manual
thoroughly before beginning to perform maintenance. The design or specification is
subject to modification without prior notice for improvement.
In case the instrument cannot be repaired by the procedures described in this manual,
contact HUVITZ with product and problem status information like serial number of the product,
version number of the Operating System, details of the symptom, and etc.