Onkyo TX-NR545 Manual page 182

Troubleshooting
Cannot operate Onkyo components (ones without RI connection) and
components of other makers
Operate the remote controller by setting toward the light receiving section
of each component.
When using the remote controller to control other manufacturers' AV
components, some buttons may not work as expected. Also, some
components may not operate at all.
Make sure you have selected the correct remote controller mode.
Make sure you have entered the correct remote control code.
Make sure to set the same ID on both the unit and remote controller.
Input a correct remote control code again. If there are several codes, try
each code.