Nikon Z9 Mirrorless Camera - Manual (Page 783)

783 Problems and Solutions
Solutions to some common issues are listed below.
Battery/Display
Problems and Solutions
The camera is on but does not respond:
• Wait for recording and other operations to end.
• If the problem persists, turn the camera off.
• If the camera does not turn off, remove and reinsert the battery.
• If you are using an AC adapter, disconnect and reconnect the AC
adapter.
- Any data currently being recorded will be lost.
- Data that have already been recorded are not affected by removing
or disconnecting the power source.
The viewfinder or monitor does not turn on:
• Have you changed the monitor mode? Choose a different monitor
mode using the
M button.
• Have you limited the choice of monitor modes available using the
[
Limit monitor mode selection ] item in the setup menu? Adjust
settings as required.
• Dust, lint, or other foreign matter on the eye sensor may prevent it
functioning normally. Clean the eye sensor with a blower.
The viewfinder is out of focus:
• Rotate the diopter adjustment control to adjust viewfinder focus.
• If adjusting viewfinder focus does not correct the problem, set the
focus mode to
AF-S and the AF-area mode to single-point AF. Next,
select the center focus point, choose a high-contrast subject, and focus
using autofocus. With the camera in focus, use the diopter adjustment
control to bring the subject into clear focus in the viewfinder.