there is no such button
If it's an S-Series, hold down the RCL button and push the tune up button to set the hour and the tune down button to set the minutes.
A button is mode; it allows you to select days, hours, seconds. B button is the incremental button (moves the number up) C button is count up or count down mode Set the days. The hours, minutes, seconds are set to your current time and the time until is calculated.
Unfortunately, PlayStation Portables do not have a setup button on it. However, pressing the select button on the main menu works as the setup button if your PSP is modified.
press and hold clock button for 3 seconds press the seek/track button up or down to set hours press the tune/ff-rew button up or down to set minutes press clock to exit
press the set button. the word set will light up hold the seek button until the correct hour. then press and hold the scan button until correct minute appears and your done good luck.
Turn the radio on. Press SET button. This puts the radio in (Program) mode. Press SEL button. This puts the radio in (Set Hours) mode. Press TUNE button up or down to adjust hours. Press SEL button. This puts the radio in (Set Minutes) mode. Press TUNE button up or down to adjust minutes. Press SEL button again to return to normal mode. Pressing the SEL button after this changes the display to (Radio Frequency) display or (Time) display.
page set up
Press the start (forward) button just in the moment of start (during the "get set" message Hold the up button at the end of the "get set" message.
If your radio has a "clock" button press and hold it while using the up/down tuner( or volume, i forget) button to set the time.
There is a black button on the right hand side of the band button hold that in and it will come up with a time then use your seek and tune buttons to set it
click on the audio button to select clock and press to toggle from hour or minute you want to set and press + or - to select the number. To cancel set up, click band button.