Yamaha R1 Owner's Manual page 50

Instrument and control functions
To set the brightness
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1. Select "Brightness".
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2. Select the desired brightness level
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by rotating the wheel switch, and
then short push the wheel switch
to fix the setting.
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"Clock"
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The clock uses a 12-hour system.
To set the clock
1. From the MENU screen, select
"Clock".
2. When "Clock" is selected, the
hours figure will be highlighted.
3. Set the hour by rotating and then
short push the wheel switch.
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4. The minutes figure will become
highlighted.
5. Set the minutes figure by rotating
and then short push the wheel
switch.