Canon EOS 90D Advanced User's Manual page 345

Adjust movie sound volume with the TV set. The sound volume cannot be
o
adjusted with the camera.
Before connecting or disconnecting the cable between the camera and
o
television, turn off the camera and television.
Depending on the television, part of the image displayed may be cut off .
o
Do not connect any other device's output to the camera's < D >
o
terminal. Doing so may cause a malfunction.
Certain televisions may not display the images due to incompatibility.
o
It may take some time before images are displayed. To avoid delay, set [ 5 :
o
HDMI resolution] to [1080p] ( = 543).
Touch-screen operations are not supported while the camera is connected to
o
a television.
Playback on a TV Set
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