How to set a deh-p4000ub car radios clock - Pioneer Audio Players & Recorders

Try this:
Adjusting initial settings
Using the initial settings, you can customize
various system settings to achieve optimal performance
from this unit.
1 Press SOURCE and hold until the unit
turns off.
2 Press SOURCE and hold until function
name appears in the display.
3 Press FUNCTION to select one of the initial
settings.
Press FUNCTION repeatedly to switch between
the following settings:
Clock—AUX (auxiliary input)
Use the following instructions to operate each
particular setting.
# To cancel initial settings, press BAND.
# You can also cancel initial settings by holding
down SOURCE until the unit turns off.
Setting the clock
Use these instructions to set the clock.
1 Press FUNCTION to select clock.
2 Press c or d to select the segment of
the clock display you wish to set.
Pressing c or d will select one segment of the
clock display:
Hour—Minute
3 Press a or b to set the clock.
Turning the clock display on or off
You can turn the clock display on or off.
! Even when the sources are off, the clock
display appears on the display.
% Press CLOCK to turn the clock display
on or off.
Each press of CLOCK turns the clock display
on or off.