Canon EOS 80D (W), Instruction Manual, Page: 483 / 526

483
Troubleshooting Guide

The camera cannot be used with EF-M lenses (p.47).

Install a recharged battery in the camera (p.34).

Make sure if the card is properly inserted (p.37).

Slide the card’s write-protect switch to the write/erase position (p.37).

If the card is full, replace the card or delete unnecessary images to
make space (p.37, 378).

If you try to focus in the One-Shot AF mode and the focus indicator
<
o
> in the viewfinder blinks, a picture cannot be taken. Press the
shutter button halfway again to refocus automatically, or focus
manually (p.50, 137).

If a card error message is displayed, see page 39 or 496.

Set the AF operation to One-Shot AF. Focus lock is not possible in the
AI Servo AF mode or when servo takes effect in AI Focus AF mode
(p.118).
Shooting-Related Problems
The lens cannot be attached.
The viewfinder is dark.
No images can be shot or recorded.
The card cannot be used.
I cannot lock the focus and recompose the shot.