Is power cycling the HP DeskJet 2700 an effective solution for the 'EE' error?

Yes, power cycling is often an effective first step for many printer errors, including the 'EE' error. To power cycle, turn the printer off using the power button, then unplug the power cord from the wall outlet for at least 60 seconds. This allows the printer's internal memory to clear. After waiting, plug the printer directly into a wall outlet (avoiding surge protectors or power strips) and turn it back on. This can reset minor glitches causing the error.