Onkyo TX-RZ3100 User Manual page 134

Troubleshooting
There is no picture from a source connected to an HDMI IN terminal.
To display video from the connected player on the TV while the unit is in
standby, you need to enable "Hardware" ­ "HDMI" ­ "HDMI Standby Through"
in the Setup menu. Refer to "HDMI Setup" in "Setup" in the Basic Manual for
information about HDMI Standby Through.
To output video to a TV connected to the HDMI OUT SUB jack (for compatible
models only), in the "Quick Menu" displayed when Q is pressed on the remote
controller, select the HDMI OUT jack for output in "Other" ­ "HDMI Out".
If you connect a player supporting HDCP2.2, be sure to connect it to one of the
HDMI IN1 to IN5 jacks of the unit.
Check if "Resolution Error" is displayed on the main unit display when video
input via HDMI IN jack is not displayed. In this case, the TV does not support
the resolution of the video input from the player. Change the setting on the
player.
Reliable operation with an HDMI­DVI adapter is not guaranteed. In addition,
video signals from a PC are not supported.