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Jim129
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HP OfficeJet Pro 8720 will not wake up from sleep and loses network connection

HP Recommended
Pro 8720
macOS 10.12 Sierra

Printer/scanner goes to sleep after 5 minutes, loses network connection and does not reawaken when I send a print or scan.  How can I fix this, it is making the printer hard to operate as I have to shut it off and turn it back on every time I print or scan once it has gone to sleep.  I understand that sleep can't be shut off.

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sabretooth04
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HP Recommended

Try these but not to sure about a TCP/IP port on a MAC, so might want to skip this.

 

These settings are for setting up your wireless or wired printers to:

* Stay connected to your router
* Fix printer ‘offline’ status
* Wake from sleep mode
* Speed up wireless printing

While DHCP is convenient, devices such as printers (wired and wireless) should always be assigned a static (fixed) IP address manually to avoid conflicts on your wireless network and must be outside the DHCP range of the router. This is because printers are the only external devices that do not have the power to automatically interrupt the router for a new DHCP address once the least time expires.  

After setting the static IP, the computer(s) must be updated under Printer Properties/Ports to show a Standard TCP/IP port with the printers’ new static IP address.

1. Set a static IP in the printer outside the DHCP range of the router (check your manual).  This static IP is important as DHCP IP addresses will change upon different power up sequences of your devices.  You always want your printer to come up with the same IP address all the time.  See how to do this here:

http://www.watchingthenet.com/linksys-tip-assign-static-ip-address-to-printer-while-using-dhcp-on-yo...

This is for Linksys routers but can be used for all routers. Verify your DHCP range and change this first if needed.  After setting the static IP, the computer(s) must be updated under Printer Properties/Ports to show a Standard TCP/IP port with the printers IP address.  

To see why this problem exists and how to fix it, watch this video here:

https://www.youtube.com/watch?v=ZEqvUKxWmq4

How to set a Standard TCP/IP port.  This is important.

a.    Click Start/Devices and Printers.  Right click on your HP Printer.  Select Printer Properties.  Select the Ports tab at the top.
b.    Select Add Port.  Select Standard TCP/IP Port.  Select New Port.
c.    Follow the Add Port Wizard.  Under Printer Name or IP Address, input the Static IP address you just set from the above information.  Example:  192.168.1.15.  The IP address will be copied under Port Name.  This is OK to leave this alone.
d.    Select Next and Finish the Wizard.

By performing the above, the printers Embedded Web Server (EWS) will now work all the time by going to your Static IP address in your browser also.  

2. Verify in the printer that 'Auto Off/Sleep/Energy Saving Mode' is disabled and/or the System Mode Time Out is set to zero (0).  Use the Embedded Web Server (EWS) by going to the printers IP address in your browsers address bar, click Settings Tab/Auto Off, or use the Printer Assistant, Printer Home Page (EWS). Also check your Printer Properties.

3. If the printer supports and has IPv6 enabled, disable IPv6 in the printer.

4. Make sure printer is plugged directly into a wall outlet and not into a UPS, power strip or surge protector. This will cause the printer to drop offline and disconnect (yes verified!).

5.  Make sure your printer and router are at least 5 feet apart from each other.

Additional steps to be taken if you continue to have the problem (if they are posted)…

Printer offline issues can happen because the IP address of the printer keeps changing. This video explains how that can happen and what to do to fix it.For ...
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