Thermal Printer Technical Support Engineer

I'm seeking a hardware technical support engineer to troubleshoot and resolve L1-L3 level issues with our thermal printers, specifically Epson and Bixolon brands. The engineer must be willing to work on a per ticket basis.

Common issues include:
- Paper jams
- Printing errors
- Connection / configuration issues

Sample Issue (L3):
Case Ticket ID: 57790
Model: BK3-31 Thermal Kiosk Printer
Issue Type: Printer Configuration Issue
Case Description:
1) Our one of customer is using BK3-31A Kiosk printer with USB Cable. They can print paper from windows utility software but they can't run printer with java script sample program , error message is showing that cannot connect to server.
2) Also with official LINUX SDK the printer is not working.

Solution tried till date:
1) Sent updated Linux SDK and drivers and escalated case to Bixolon OEM.
2) they also used CUPS driver , they able to print , but from HTML page through xmlhttprequest with content type aplication/ipp it is not printing anything.
3) with Linux SDK , in sample code they getting error that " failed to connect to the printer"

They need to run the printer with Linux Webprint. Kindly let us know the root cause analysis of this issue and troubleshooting suggestions.