Does anybody know where I can find an instruction manual for a pioneer head unit. The model is a couple years old. Nobody has been able to set the clock. The model number for the head unit is deh-p31. it's the super tuner III.

Hey have you figured out how to set the time on your cd player yet cause I don't know how to do it either ?

1. Hold SOURCE button to turn unit off. Only the time will be displayed at this point.

2. Hold the F (function) key for 2-3 seconds (located at upper-right corner of head unit).

3. The hours digit will start flashing. Use the UP and DOWN cursor buttons next to the F button to set the hour.

4. Press the RIGHT cursor button. The minutes will flash. Use the UP and DOWN cursor buttons to set the minute.

5. Press the F key once more, press the SOURC button to turn the unit back on, press the CLK button to toggle the time display on or off.

That's about it.

Go to this website Service Manuals, Parts... and under search type in your model head unit.