Canon EOC-1DX Instruction Manual page 387

Erasing the Camera Status Log
When you press the <L> button in step 3, you can delete all the log
entries displayed.
The Camera status log screen displays the latest five entries for Errors
and Cautions. If there are more than five entries, the oldest entries will be
deleted automatically.
The shutter release cycles are displayed in units of 1000. If there have
been 1,000,000 or more shutter release cycles, 1,000,000 will be
displayed.
If the same Error or Caution occurs often, consult a Canon Service
Center.
3 System Status Display
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