HP Pagewide color MFP P77940

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This copier was rebooting every copy or config page, until I unplugged the
wireless jetdirect. It gives 81.04.00 jet direct event and 49.43.14 errors.
Any ideas?
I also saw 61.02.38 errors in event log.

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Re: HP Pagewide color MFP P77940

I resolved all errors except 61D2.3B error.
airflow assy problem?