: The NX-5400 Programming Manual includes a section on warning messages and service programming to troubleshoot system malfunctions.
While specific codes vary by model, several common "Warning" messages appear across the Uniwell range: Troubleshooting Uniwell Cash Register Error Codes
: A comprehensive list of manuals for older and newer models (System 3 to TX-850) can be found at The Checkout Tech . Common Uniwell Error Codes & Solutions Uniwell Cash Register Error Codes
: Detailed Programming Manuals offer troubleshooting tips for issues like system freezes and communication errors.
For most Uniwell models, error codes are categorized as "Warning Messages" and are found in the following types of documentation: : The NX-5400 Programming Manual includes a section