M477fdw - auto-wakes-up, but won't go back to sleep

[Tom__H]

Hi - got a HP M477fdw... it's Networked (Wired Ethernet, IPv4) - Wireless/Fax are disabled - I'm just using it as a Printer/Scanner

It's running on the latest firmware - 20190113

The problem is, that periodically it wakes up from sleep, but the  printer's control panel, and the printer's fan stay on continuously - i.e. it won't go back to sleep

(most noticable at night because I can see the glow from the printer's control panel, and also I can hear the printer's fan on continuously)

In the Energy Settings, I have it set to:

Sleep/Auto Off After Inactivity - 30 Minutes
Shut Down After Inactivity - 8 Hours

Delay when ports are active - enabled/checked

I've tried rebooting network/Router, different (new) network cables, also reloading the firmware, pcs are running Win10 x64, but theyre switched off overnight

Is this a known issue?

- any ideas?

[Tom__H]

I eventually phoned HP Support as the printer was still in warranty...

I told HP Support bloke that the printer was periodically waking-up during the night, and not going back to sleep afterwards...

HP bloke told me that the printer wakes-up periodically to "Calibrate"

I queried about it not going back to sleep, and fans being on continuously, and was told "that's normal" - ****?  

I told him that I was using the latest drivers, latest firmware, new network cable, rebooted router etc.

I asked if there was any new/beta firmware available (No)

I was also advised to turn-off the printer after each use ???

Not impressed at all !

[elonderin]

i got mine today and experienced that too. although since it's in arms reach i just turned it off.

if things like this mount up i'll return it. not that impressed so far either.

[Tom__H]

Mine has "good" days when it hardly ever has this issue, and "bad" days when it happens often

I've tried disabling all the network protocols that I never use eg Bonjour, AirPrint, 9100, SOAP etc

Also, have you spotted HP have just posted updated drivers ? (Release date: May 20, 2019)

https://support.hp.com/gb-en/drivers/selfservice/hp-color-laserjet-pro-mfp-m477-series/7326560