SNBC BTP-R880NPI, Service Manual

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BTP-R880NPII Service Manual
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5 Maintenance of Main Parts
5.1 Print head cleaning
When the TPH happens in any case as below, you should clean it:

Printout is not clear;

Some tier printout is not clear;

Noise in paper feed or retraction is high.
The steps for cleaning print head are shown as below:
1) Turn off the printer power and open the top cover;
2) If printing is just finished, please wait until the print head is completely cooled;
3) Use alcohol cotton (wringed out) to wipe away the dust on the surface of print head and roller;
4) Wait until the alcohol is completely evaporated, then close the top cover.
5.2 Sensor cleaning
When the printer occurs in any case as below after manual check, you should clean marked paper
sensor:

During the print, the printer sometimes report paper end error;

Fails to identify marks effectively;
 The printer doesn’t alarm while paper out.
The steps for cleaning the platen are shown as below:
1) Turn off the printer power and open the top cover;
2) Clean the platen with alcohol cotton (should be twisted);
3) Turn on the printer power until the platen is dry.
5.3 Roller cleaning
In the following cases, the platen should be cleaned:

Printout is not clear;

Some tier printout is not clear;

Noise in paper feed or retraction is high.
The steps for cleaning the platen are shown as below:
1) Turn off the printer power and open the top cover;
2) Clean the platen with alcohol cotton (should be twisted);
3) Turn on the printer power until the platen is dry.
Caution:

Must be sure that the power is off during routine maintenance.
 Don’t allow to touch the TPH with hand and metal, or scratch the surface of the TPH, platen and
sensor with forceps.

Do not use organic solvent such as gasoline and acetone to clean the TPH and platen.
 Don’t turn the power to go on print until the alcohol volatilize completely.