Zebra lp 2844 prints a blank test page - Zebra LP 2844-Z Thermal Label Printer

If your Zebra LP 2844 printer is experiencing shifting or off-center printing, there are a few possible causes and troubleshooting steps you can try:

1. Check print settings: Ensure that the print settings on your computer or label design software are correctly configured for the label size and layout you are using. Make sure the label dimensions and print margins are set accurately.
2. Calibrate the printer: Perform a calibration on the printer to ensure it is properly aligned. To calibrate the Zebra LP 2844, follow these steps: a. Turn off the printer. b. Hold down the feed button. c. While holding the feed button, turn on the printer. d. Release the feed button once the green status light begins to flash. e. The printer will feed labels and automatically adjust the label alignment. f. Once the printer stops feeding labels, the calibration is complete.
   
3. Adjust label position sensors: The LP 2844 has label position sensors that detect the start of each label. If these sensors are misaligned or dirty, it can cause shifting or off-center printing. Clean the sensors using a lint-free cloth and ensure they are properly aligned.
4. Check label alignment: Ensure that the labels are loaded correctly and aligned properly in the printer. Make sure they are inserted straight and centered in the label guides.
5. Inspect the print head: Check the print head for any debris, adhesive residue, or damage. Clean the print head with isopropyl alcohol and a cotton swab if necessary. A dirty or damaged print head can affect print quality and alignment.
6. Update or reinstall printer drivers: Ensure that you have the latest printer drivers installed on your computer. If the drivers are outdated or corrupted, it can cause printing issues. Visit the Zebra website and download the appropriate drivers for your LP 2844 model.
7. Test with different labels or ribbons: If the problem persists, try using different labels or ribbons. Sometimes, the issue could be related to the specific media being used.

try to reset to favtory default and do a test print, download if needed other driver (www.seagullscientific.com.) reset to factory default with this driver and try a test page. Hope it helps. Paulo.

So you have Zebra LP2844 or TLP 2844?
try diferent driver and print test page
www.seagullscientific.com

Since the LP2844 is a direct thermal printer, the first thing to check is to make sure you have direct thermal labels - regular label stock won't work. Just quickly scrape your thumbnail across the label, the friction will cause a black line if the label is direct thermal.

http://www.zebra.com/id/zebra/na/en/index/service_support/options/technical_support.html?country=US&product=58

contact tech support for Zebra LP 2844 Thermal Printer.

First thing you need to check power is coming to printer or not.
If power is coming check printer is feeding properly or not when you press feed button it should feed one blank label.
If it does not feed label then calibrate printer from driver or press feed button and switch on printer hold feed button for 2-3 seconds and leave it .It will calibrate and print test page.

possibly not a real LP2844 but an LP2543, a printer mass produced for and used by UPS. refurbishers change the label and sell as LP2844 because they are almost identical.
if it has an AC-AC adapter, it is an LP2543. LP2844 uses a AC-DC adapter, and all LP2844's have USB ports.

It sounds like they may need to set their "Q" values for the labels they are using.   If that isn't it, we may need more info - are they using Zebra brand or custom labels?  
To start with, I would ask them to try adding these "Q" value commands: q456 Q152,24
If that doesn't work, then maybe they can provide the other info mentioned above so we can understand the problem better.

If the printer is printing nothing but blanks, try another roll of labels.

If the printer is printing blanks in between labels, it probably needs to be gap sensed. You can do this by:
1. turn the printer off.
2. hold the feed button down and then power the printer back on while still holding the feed button down.
3. release the feed button when the light flashes.
4. the printer will then regap itself
5. when the regapping is done, press the feed button once. It will print on the label that it is 'out of dump'
6. the printer should then be ready to go.

1. Clean the print head with cleaning pen.
2. Adjust print speed/darkness in software.
3. Check the media and verify that print surface is facing up.
4. Check that correct thermal media is in use.