Performing Maintenance; Cleaning The Thermal Head And Platen; Handling Recording Paper Jams; How To Release The Cutter Lock - Star Micronics TUP900 Series Specification Manual

9-5 Performing Maintenance

9-5-1 Cleaning the Thermal Head and Platen

To ensure long-term and stable printing, periodically clean the thermal head and the platen. It is
recommended that you clean every 500,000 lines.
The thermal head and platen can be cleaned by opening the platen unit with the release lever.
• To clean the thermal head heating elements, wipe with a cotton swab dampened with an alcohol based
cleaner (such as ethanol or methanol). Also, do not apply excessive force when doing so. Wipe the
heating elements gently. After cleaning, check that the alcohol has completely evaporated before closing
the platen unit.
• Use a soft, dry cotton swab to clean the platen. Wipe away the dirt while rotating the platen.
Also, complete wipe away all of the paper dust on the rubber platen. If the cleaning is incomplete, there
may be problems in paper feeds.

9-5-2 Handling Recording Paper Jams

If recording paper should become jammed, open the platen unit (including the presenter unit) and remove
the jammed paper.
Never pull on the jammed paper unnecessary while the printer unit is closed because this can damage the
drive system parts.
Fig. 9.5.2 shows the locations to operate (levers/knob) when paper becomes jammed. Remove jammed
paper according to the following procedures.
Procedure 1.
Procedure 2.
Procedure 3.
Procedure 4.
Notes 1)When removing the jammed paper, never move you hands near the tear bar or the auto-cutter
because it is very dangerous. Also, when opening or closing the rotating portions, be careful
not to get your hands or fingers caught.
2) When locking the cutter blades, do not forcefully rotate the platen unit (or the presenter unit)
because this can be the cause of machine failure.
See the following pages for releasing the cutter lock and opening the platen unit.

9-5-3 How to Release the Cutter Lock

Use the following procedures to release the auto-cutter lock if trouble occurs, such as when paper becomes
chewed.
Procedure 1.
Procedure 2.
TUP900 Series Specifications Manual
Remove the right and left lock levers.
Open the platen unit (including the presenter unit) using the release lever.
Rotate the knob to remove the jammed paper.
Close the platen unit (including the presenter unit) and lock the left and right lock levers.
Turn the apparatus power off.
Rotate the emergency knobs in the direction of the arrows on the top of the auto-cutter
unit case to return the cutter blades to their home position.
The emergency knob should be rotated using a tweezers, screwdriver or ball-point pen to
prevent accidents.
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