NORMAL OPERATING SCREEN
When the YUMBI Printer is operating normally, a signal bar should be displayed on the right-hand side of the screen, as well as the letter 'G' and an arrow in the top left-hand corner. See image provided below of a fully operational YUMBI GSM Printer.
If you have received an SMS warning that the YUMBI Printer located in your restaurant is currently offline it is possible that one of the following scenarios has occurred.
Please go to the YUMBI Printer and run through the scenario check-list below.
ERROR SCENARIOS & SOLUTIONS
1. Printer screen is blank
Ensure that the YUMBI Printer has been plugged into the power socket and is switched on.
2. Printer screen displays the text "Not Registered"
Check that the antenna located on the left-hand side of the printer is tightly secured and in the upright position.
3. Printer screen displays the text "Input Number"
Press the Red input button located on the printer keypad. If this doesn't resolve the issue please perform a manual reboot by switching the printer off and on again, or remove the power adapter and re-insert it.
4. Printer screen displays the text "DNS Error"
Please perform a manual reboot by switching the printer off and on again, or remove the power adapter and re-insert it.
5. Out of Paper
Thermal Credit Card Rolls is the usual paper that is used inside the GSM Printer. This can be found at any stationery shop if required.
6 All other errors
Please perform a manual reboot by switching the printer off and on again, or remove the power adapter and re-insert it.
If none of the above steps resolves the problem, please contact the YUMBI Support team.