Maintenance; Cleaning The Thermal Head And Platen; Handling Paper Jams - Star Micronics TUP900 Series Technical Manual

1.

Maintenance

In order to maintain the optimum performance of this printer and to prevent trouble, maintenance must be carried out
according to the following items.

1-1. 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.

1-2. Handling Paper Jams

If recording paper should become jammed, open the platen 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. 2-1 shows the locations to operate (levers/knob) when paper becomes jammed. Remove jammed paper
according to the following procedures.
<TUP992 >
Procedure 1. Remove the right and left lock levers.
2. Open the platen unit (including the presenter unit) using the release lever.
3. Rotate the knob to remove the jammed paper.
4. Close the platen unit (including the presenter unit) and lock the left and right lock levers.
<TUP942 >
Procedure 1. Open the platen unit using the release lever.
2. Rotate the knob to remove the jammed paper.
3. Close the platen unit. Check that it has been completely closed at this time.
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.
3) Fig. 2-1 is a conceptual view of a model equipped with a presenter. On models not equipped with a presenter,
operate only the release lever to open the platen unit.
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