Canon EOS 7D Mark II (G) Instruction Manual page 505

Operation Problems
I cannot change the setting with the
<6> dial, <5> dial, <9>, or <p>.
Set the <R> switch to the left (lock release, p.59).
Check the [83: Multi function lock] setting (p.442).
A camera button or dial does not work as expected.
Check the [83: Custom Controls] setting (p.445).
Display Problems
The menu screen shows fewer tabs and options.
In the <A> mode, only certain menu tabs and options are displayed.
Set the shooting mode to <d> <s> <f> <a> <F> (p.64).
Under the [9] tab, [Menu display] is set to [Display only My Menu
tab] (p.463).
The file name's first character is an underscore ("_").
Set the color space to sRGB. If Adobe RGB is set, the first character
will be an underscore (p.187).
The fourth character in the file name changes.
With [51: File name], select the camera's unique file name or the file
name registered under User setting 1 (p.190).
The file numbering does not start from 0001.
If the card already contains recorded images, the image number may
not start from 0001 (p.193).
Troubleshooting Guide
505