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Blank receipts or jammed paper

Blank or faint receipts, jammed paper, a cover-open message: how to find the cause and fix it yourself.

When receipts come out blank or faint, or the paper gets stuck, the cause is usually the roll or the cover, not the device itself. Go through the checks in order.

The receipt comes out blank

Thermal paper only darkens on one side. If the roll is the wrong way round, the receipt comes out white. Check with your fingernail:

  1. Tear off a piece of paper.
  2. Scratch one side firmly with your fingernail, then the other.
  3. Load the roll so that the side that darkened faces the print head.
  4. Print a test receipt.

If neither side darkens, the paper is not thermal paper or is too old. Replace the roll.

The cover is open or the paper has run out

The device will not print while the cover is open. The FP-700 MX and FMP 350 X show "Капака е отворен !" (cover is open). Open the cover and close it with a light press until it clicks.

When the paper runs out, the FP-700 MX and FMP 350 X show "Няма хартия !" (no paper), and the DP-25 MX shows "Няма хартия.Натиснете (C)" (no paper, press C). Load a roll and, on the DP-25 MX, press C.

The devices also sense when the paper is near the end. Change the roll in time, so it does not run out in the middle of a receipt.

The paper is jammed

  1. Switch the device off.
  2. Open the cover.
  3. Take out the roll and any torn bits of paper. Do not use sharp or metal objects.
  4. Check the roll's width and diameter against the table in "Changing the paper roll".
  5. Put the roll back and pull out a few centimetres of paper.
  6. Close the cover.
  7. Switch the device on and print a test receipt.

The print is faint

  • Use thermal paper of the right thickness for your model.
  • Keep rolls away from sun, heat and moisture. Old paper, or paper kept somewhere warm, prints fainter.
  • Contrast is a device setting. On the DP-25 MX, for example, it ranges from 0 to 20, default 10. Ask your service company to check it.

None of this helps

Call your service company if the device shows "Трябва сервиз!" (service needed), reports a print mechanism error, or prints blank with thermal paper loaded correctly. Do not take the printer apart. If you clean the outside, switch it off first and do not use harsh products.

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Updated: 2026-10-21