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If the name of your Boca printer contains the following BIDI, this means that the new version of the Boca driver is used. So you have to do the following setup.
Cleaning the printer drivers
1) remove all the copies of the BOCA Bidi drivers
2) unplug a re-plug the printer
Setting up the printer driver (to solve COMM_0040)
Follow the steps below to disable bi-directional communication.
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Legacy mode wrongly enabled
Then, look at the device drivers' logs. If they are very big, look for these kind of lines:
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App to reconfigure the boca:
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Wrong firmware
Some BOCA may have a firmware "HP compatibility mode" . This should be visible when printing a BOCA test ticket
3. Printer indicates out of paper when it is not the case
- Check that the paper is still the same as when it worked (new paper is maybe not adapted, because of the placement of the black detection mark)
- Check that paper is correctly aligned in the printer (it should normally not be able to move left / right when inserting it, there must be only one position with minimal margin of movement ; if not, open the Boca and set it up correctly)
- Check that paper is inserted in the correct direction (there are four way to insert paper, two are plain wrong (upside down), two may look correct (printable on top) but only one is right). The black mark must be on the right, below, when looking from the front of the printer.
- Open the Boca, there is a black plastic handle that presses the head on the paper. It must be firmly pressed.
- The black mark optical detector could be dirty -> open the boca, clean it up (see the manual)