Canon EOS 80D Instruction Manual page 490

Troubleshooting Guide
Wireless Functions
Wireless functions cannot be set.
If the camera is connected to a computer, GPS receiver, or other

device with an interface cable, wireless functions cannot be set ([51:
Wireless communication settings] will be grayed out). Disconnect
the interface cable before changing any settings.
Refer to the Wireless Function Instruction Manual.

Operation Problems
I cannot change the setting with the <6>, <5>, <9>,
or touch screen.
Set the <R> switch downward (lock release, p.54).

Check the [54: Multi function lock] setting (p.54).

A camera button or dial does not work as expected.
Check the [8C.Fn III -4: Custom Controls] setting (p.433).

During touch screen operations, the beeper suddenly
sounds softer.
Check if your finger is blocking the speaker (p.26).
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Touch screen operation is not possible.
Check if [53: Touch control] is set to [Standard] or [Sensitive]

(p.63).
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