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HP LaserJet Pro 4001dn Printer

I have a couple of lasetjet pro 4001dn on our networks that will not wake up from sleep mode. Before I buy 124 more, I would like to solve this issue. We have set it to sync with a time server every hour. We have the sleep mode timer set to the max of 1 hour and we have set it to "never" on the power saving mode and we have checked the box to disable power saving mode. 

 

This printer replaces our older 401 series we have out there.

 

Any ideas?

 

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