Sony PSP-1006 K - Manual (Page 52)

52 Using the control panel
You can specify a section of video that you want to play repeatedly.
1
During playback, select from the control panel and
then press the button at the beginning of the section to
be repeated.
The starting point, point A, is set.
2
Press the button at the end of the section to be
repeated.
The ending point, point B, is set and the specified section begins to play
repeatedly.
Clearing A-B Repeat
Select or from the control panel, and then press the button.
Playing a section of video repeatedly