SP-327 Thermal Printer Maintenance Manual
Introduction
The SP-327 printers are designed to require a minimum of maintenance and service. This section provides basic
instructions for general care, maintenance and cleaning of the thermal print mechanism.
Electrical and mechanical repairs should be performed by
qualified personnel only.
Make certain that all electrical
connections are disconnected before any service is performed on the SP-327 printers. Personnel involved in repair
and maintenance of the print
mechanism, or other electronic components should take appropriate measures to guard against electrostatic
discharge. Electrostatic discharge can damage the heating elements and ICs associated with the printer.
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Required Tools and Supplies 1. Common hand tools 2. Short bristle brush 3. Denatured alcohol 4.
Cleaning rags 5. Cotton swabs
6. Low temperature grease
General Care and Handing
To ensure high print quality and long print head life, always use thermal paper approved by TELPAR Corporation.
Do not operate the printer without paper installed in the mechanism. Operation without paper may cause damage to
the thermal print head. When the printer is not in use, it is recommended that the paper release lever be switched
to the release position. This will prevent deformation of the soft print platen from constant spring pressure.
In applications were prolonged dense printing is performed, condensation may occur. This condition occurs when
the thermal print head is heated to the point where is releases water vapor contained within the paper.
Condensation can also appear when printing in extreme low temperatures, or in high humidity environments.
Excessive condensation can cause the paper to stick in the mechanism and cause a jam condition.
Removing Paper from the Mechanism
Excess paper that remains in the print mechanism may be easily removed before cleaning. Paper can be removed
by turning the motor in the reverse direction by hand. Tweezers may be used to remove remaining paper lodged in
the mechanism. Caution should be excised when removing paper with any tool. The surface of the thermal print
head is made of a ceramic material that can be easily damaged. A cotton swab is recommended for removal of
paper dust in this area.
SP-327 Mechanism in a Fully Closed Position
MM1
