error message remove USB device from printer when nothing connected

[k1llD45hN1n3]

Scanning just stop working and trying to reset printer now can't even connect. Attempt to use USB to find printer then the Easy Start software  just say "Unplug your device from USB" over and over and over.

Manual setup with IP only find printing capabilities and not scanning. Installing via USB works but  once I disconnect USB the printer is offline.

Wifi network is google wifi mesh with upnp enabled.  DHCP holds a reserved IP entry for the printer so it never changes.

Bonjour events during setup:

$ dns-sd -B

Browsing for _http._tcp

DATE: ---Thu 07 Nov 2019---

 0:21:16.316  ...STARTING...

Timestamp     A/R    Flags  if Domain               Service Type         Instance Name

 0:21:16.317  Add        3   9 local.               _http._tcp.          Synology

 0:21:16.317  Add        3   9 local.               _http._tcp.          Nighthawk S8000 (<mac address redacted>)

 0:21:16.317  Add        3   9 local.               _http._tcp.          Nighthawk S8000 (<mac address redacted>)

 0:21:16.317  Add        3   9 local.               _http._tcp.          Nighthawk S8000 (<mac address redacted>)

 0:21:16.317  Add        2   5 local.               _http._tcp.          Officejet 6600 [D30826]

 0:21:26.827  Rmv        0   5 local.               _http._tcp.          Officejet 6600 [D30826]

 0:21:30.099  Add        2   5 local.               _http._tcp.          Officejet 6600 [D30826]

 0:21:55.804  Rmv        0   5 local.               _http._tcp.          Officejet 6600 [D30826]

 0:21:56.391  Add        2   5 local.               _http._tcp.          Synology

[KrazyToad]

@k1llD45hN1n3

I have gone through your Post and I would like to help

Are you able to make Photocopies?

We need to check few details first and we could try adding the printer as Airprint and then check if scanning is working

- Do you have any Anti-virus software installed on your MAC? If you do, please deactivate it for now.

- Ensure the printer and the MAC are connected to the same wireless network.
-Note:- This printer supports only 2.4GHz network. Do not connect it to 5 GHz Network incase your Router supports both 2.4 and 5 GHz
- If you have a Dual-band router and both 2.4GHz and 5GHz networks share the same name/SSID, then the printer will not be able to connect to the network. In this case, contact your Internet service provider to assign different names to both the networks.

Please check with your Internet service provider if your router is able to forward 'Bonjour packets'. This is very important

Bonjour locates devices such as printers, other computers, and the services that those devices offer on a local network using multicast Domain Name System (mDNS) service records. The software comes built-in with Apple's macOS and iOS operating systems.

Also perform a ping test using the Mac Network Utility and let me know the results. Use the printer IP address to perform a ping test, the printer IP can be located by touching the wireless icon on the printer display or by printing a Network Configuration Page

Next ensure your Mac and Printer have the latest updates

Printer Firmware: https://support.hp.com/in-en/document/c02919168

Mac update: https://support.apple.com/en-us/HT2015

After checking all those details and if the Ping Test is successful, Remove and Re-add the printer using Airprint. AirPrint is an Apple technology that helps you create full-quality printed output without the need to download or install drivers.

1.) Click the Apple menu, click System Preferences, and then click Print & Scan or Printers & Scanners.
2.) Check if your printer name displays in the Printers list, If your printer is listed, click the printer name, click the minus sign to delete the printer.

3.) If you see multiple printer queues for the same printer, remove all extra printers by selecting them one at a time, and then clicking the minus button  at the bottom of the list.

4.) Click the plus sign , click Add Printer or Scanner, click the printer name.

5.) Click the Use or Print Using menu, select AirPrint or Secure AirPrint in the pop-up menu. Then click Add.

6.) Try to Scan 

Let me know how it goes😊

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue