Our printer sporadically goes to error mode (3 amber flashing lights plus the power light flashing) when we try to print a document. Initially thought it was a PDF issue but now various file formats cause the same issue. A reboot of mains power sometimes prints one document, then back to error.
No issue with wireless connection. Happening via two different PCs.
Tried the HP doctor programme which said it updated the port, checked driver, etc. (says problem fixed) and prints a test page ok.
Would be grateful for further ideas re. fix as very close to buying a new printer (lots of office time lost troubleshooting)