Adjusting the backlight, 1 press the menu button, O«: unlock – Sony CPD-L150 User Manual
Page 14: Osd h position, 3 press the buttons to select |-jcd (backlight), On: unlock, Backlight, 4 press the +/- buttons to adjust the light level, Setting the power saving delay time, 3 press the buttons to selea @ (pwr save delay)

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