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- HP Community
- Printers
- Printer Setup, Software & Drivers
- Printer HP 8720 firmware error 69666

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11-22-2024 03:40 AM
When my 8720 starts up if looks OK initially, then flashes a blue screen, but so fast the error code cannot be read, and then shows a black screen with 'printer error' and asks me to turn off and turn on again.
Most times this does not work. When it has worked I have managed to look at the log, and it reports a firmware error 69666. The printer then performs perfectly well, aligning heads, cleaning heads all OK. Until the next time it is started from cold.
The firmware is up to date. I have done a normal reset and restart to no effect.
Some of the ink was low, so I have put new ones in.
I believe there may be a way of doing a complete reset to original firmware and start again, but I have not yet found out how to do it.
WHat does error 69666 mean, and is there anything I can do about it.
11-22-2024 10:25 AM
Further to that error message, the Printer Hardware Information from HP Smart includes log entries like:
Error Code: C4EB8447
And also C4EB0400
and also
93 74900 1 TapNo=10;Name=DIAGNOSTIC PAGE;Desc=Diagnostic
92 69666 1 3303769159
90 74899 2 FROM_NVM (and also 74900 and 69556)