Printing

PAX A920 / A920 Pro / A80: receipt prints blank, NPM on screen, or nothing prints

Fix a PAX Android terminal that feeds blank paper, shows NPM (No Paper Mode), refuses transactions because of paper, or prints receipts but not the batch report.

Applies to
PAX A920, A920 Pro, A80
Payment application
BroadPOS-style PAX payment applications (Func > Settings menu)
Last reviewed
Oct 26, 2026 by Abdul Rashid

Ask Allstar AI about this guide

Exact messages this covers

  • NPM

Check first

  • Does paper come out at all? (Blank paper = roll reversed. No paper movement = NPM, sensor or mechanism.)
  • Is NPM showing on the screen?
  • Is the terminal standalone or driven by a POS? (POS-driven reprints must start from the POS.)

Use this when a PAX A920, A920 Pro or A80 feeds blank paper, shows NPM, or will not print.

Before you start

  • Have a correct 58 mm thermal roll on hand.
  • Know whether the terminal is standalone or driven by a POS. POS-driven reprints must come from the POS.
  • The settings menus below are inside the payment application and may require a password. Do not guess passwords.

Steps

  1. Blank paper: open the door, flip the roll so paper pulls off the top, pull out about 3 inches, close the door, tear off the excess, reprint. Expected: printed receipt.
  2. NPM showing: reseat the roll flat with the paper under the cutter and close the door firmly. Expected: in Auto mode the message clears on its own and transactions resume.
  3. NPM still showing with paper in: cover the paper sensor inside the compartment with a fingertip. Expected: clears when covered means the roll is not sitting over the sensor; never clears means a bad sensor.
  4. Need to transact with no paper: Func > Settings > Operation settings > No Paper Mode > Enabled. Return it to Auto Check when paper arrives. Expected: transactions run without a receipt.
  5. Receipts print but the batch report does not: enable Support Print under the MISC tab > General Settings in the application parameters. Expected: batch report prints.
  6. Reprint: Function > Reprint > Last Cust. Receipt or Any Receipt (standalone only). Expected: the receipt reprints.

If that did not work

A sensor that never clears, a mechanism that does not feed, or a parameter you cannot reach all go to Allstar support with the model, serial and app name.

Sources

Stop and contact support if

  • NPM never clears, even with the sensor covered: faulty paper sensor. Contact Allstar support.
  • Printer makes noise but paper does not feed, or the mechanism is damaged: contact Allstar support.
  • The application asks for a password you do not have: contact Allstar support. Passwords are never shared here.
  • The parameter change (Support Print) is in the PAXSTORE parameter file; if you do not manage the file, ask Allstar or your ISO to make it.

Contact Allstar support (support@allstarterminals.com, 888-403-7066) with the model, serial number, payment application, processor and what the printer does.

Contact support about this

Notes

  • The Func > Settings > Operation settings > No Paper Mode path and the Support Print parameter are documented for PAX's BroadPOS-style payment applications. Other payment apps may name or place these differently, or not have them.
  • The NPM sensor location is shown only in an image on the PAX page; the text says to cover the sensor with a finger to test it.
  • The A920 FAQ's paper-reversal answer is written for the A920; the same loading logic applies to the A920 Pro and A80 per the paper-size table, but PAX does not restate it for them.
  • Sources are PAX Technical Knowledge Base pages (PAX's Confluence site, linked from pax.us).

Sources

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