HP M477 Engine Communication Error

Roderos · ‎05-07-2023

Hi

I have HP M477fdw, it was working fine but the only problem was faint picture from one side. When I disassembled the fuser I mentioned that there was a burnt paper stick to the lower pressure roller (pink one). I ordered replacement pink roller and black sleeve (just in case).

I followed very details YouTube video how to change it (even for specific fuser model), when I did everything and connected the fuser back, now it gives me “Engine Communication Error”.

I reconnected all cables from the fuser to board, but it did5 help. What could be the issue? Any chance that at some stage I assembled the fuser wrong?

Roderos · ‎05-08-2023

UP!

Roderos · ‎05-13-2023

UP!

Repairatrooper · ‎05-13-2023

A bad fuser would give you a fuser error not a communication error. I would recheck the flat flexible cable that you had to disconnect that runs from the formatter to the dc controller.

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Roderos · ‎05-15-2023

Hi

Yes you was right. The pins were damaged on the flex cable, I tried a flex cable from the different printer and it worked, however now I am getting "50.7 fuser error".

Just to say, I recently replaced pressure transfer roller (pink) and black sleeve (next to pink roller).
Any ideas what it might be? I have read that this error corresponds to "wrong pressure release on the fuser" but how to fix it?

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