Why is my Mercury 130W ETR machine printing blank?

Programming.

https://www.google.com/search?q=mercury+130w+programming+manual+pdf

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If your Mercury 130W electronic transaction register (ETR) machine is backdating when producing monthly total sales, there may be a problem with the machine's settings or software. Here are a few steps you can try to troubleshoot the issue:

1. Check the date and time settings: The date and time settings on the ETR machine may be incorrect, which can cause the machine to backdate when producing monthly total sales. To check the date and time settings, press the "Menu" button on the ETR machine and navigate to the "Date/Time" settings. Make sure that the date and time are correct and adjust them if necessary.
2. Check for software updates: The ETR machine may be using an outdated version of the software, which can cause issues with the monthly total sales. To check for software updates, press the "Menu" button on the ETR machine and navigate to the "Software" settings. If there are any updates available, download and install them to see if they resolve the issue.
3. Reset the machine: If the date and time settings and software are up to date, you can try resetting the ETR machine to see if that resolves the issue. To reset the machine, press the "Menu" button on the ETR machine and navigate to the "Reset" settings. Follow the on-screen instructions to reset the machine, and then try producing the monthly total sales again to see if the problem is resolved.

If these steps do not resolve the issue, it is best to contact the manufacturer of the Mercury 130W ETR machine for further assistance. They should be able to provide you with specific guidance for troubleshooting the problem with your machine.

Question edited for full 'make model (what it is)'.
Question moved from Washing Machines category :>)

If you get ERR 3 when trying to enter into programming mode print the daily Z report and return to the programming mode.May 1, 2020

Mercury 130W ETR - Changing VAT Rates ' Cygnet Systems

https://www.google.com/search?q=mercury+130w+error+3

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Check the Lithium batteries are fully charged. Return to the maker Dejavu Technologies for Warranty Repair, or for service. Buy another one?

https://shop.pergamongroup.com/product/mercury-130w/

https://www.google.com/search?q=etr+mercury+130W+not+working

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https://dejavutechkenya.com/user-manual-mercury-130w/

https://www.youtube.com/watch?v=OumxKtKPjbc

Contact customer service

http://etrmachines.blogspot.com/2014/05/etr-machine-simplified-manual.html

hyjackers, what is this device, tell that first. ok?
it is POINT of SALE (POS) device,
get the manual first, in all case.

quote
iF MACHINE SHOWS ERROR 3,CHECK WHETHER YOU ARE IN THE CORRECT MODE.PRESS CANCEL TO CLEAR THE ERROR
or ask here.
https://etrmachines.blogspot.com/2014/02/etr-machine-simplified-manual-mercury.html

last post was 2014, this thing is old.
try a fresh battery FIRST ?
are you in Kenya, we are USA and have not SUCH thing here.

Ink cartridge is running low.