A Pioneer Super Tuner III D clock can be set by pressing a series of buttons. The appropriate buttons are Function, Source, a, b, c, and d.
Start by pressing and holding the Source button until the player shuts off. Next, press and hold the Source button until the time appears on the display. Utilize the Function button to select the Clock option. To select the hours and minutes of the clock, press c or d. To raise the hours and minutes, press a, and to decrease them, press b. Once the correct time has been set, hold down the Source button until the player shuts off.