Have Pioneer DEH 1900MP CD receiver. Do not know how to set time. Have no amnual. Also information on the remote control

It's on page 12 of the manual. Here you go:
http://www.pioneerelectronics.com/pio/pe/images/portal/cit_11221/372010482DEH1900MPOperationManual1030.pdf

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.
Operating this unit
12 En