HP Officejet Pro 8610 e-All-in-One Printer - Manual (Page 227)

Ink Cartridge Problem
The ink cartridge identified in the message is missing, damaged, or inserted into the wrong slot in the
printer.
To solve this problem, try the following solutions. Solutions are listed in order, with the most likely
solution first. If the first solution does not solve the problem, continue trying the remaining solutions
until the issue is resolved.
Solution 1: Turn the printer off and on
Turn off the printer, and then turn it on again.
If the problem persists, try the next solution.
Solution 2: Install the ink cartridges correctly
Make sure all of the ink cartridges are properly installed:
1. Gently pull open the ink cartridge access door.
2. Remove the ink cartridge by pushing it in to release it, and then pulling it firmly toward you.
3. Insert the cartridge into the slot. Press firmly on the cartridge to ensure proper contact.
4. Close the ink cartridge access door and check if the error message has gone away.
ENWW Ink Cartridge Problem 211