Sony PSP-1001 Instruction Manual page 138

The power indicator is on, but the LCD screen is not displayed.
, Check that the LCD screen's backlight is not turned off. If it is, press any
of the system buttons to turn on the backlight.
The battery loses its charge even when the system is turned off.
, Because battery power is used even when the system is turned off, it is
recommended that you charge the battery frequently.
Screen
The screen suddenly turns dark.
, Check the Backlight Auto-Off setting. If it is set to on, the backlight will
turn off after the set period of time. Press any of the system buttons to turn
on the screen (
, Check the Auto Sleep setting. If it is turned on, the screen will turn dark
after the set period of time (
The screen is dark and hard to see.
, The screen may appear dark, depending on the angle of viewing. Use the
display button on the system front to adjust the brightness (
The black, red, blue and green spots on the screen do not
disappear.
, LCD screens are made with highly precise technology, but in some cases,
black spots may appear, or red, blue or green spots may remain on the
screen. This is not a malfunction. For details, see "Precautions"
( page 11).
The color of the screen does not look right.
, If "Theme" is set to "Original", the background color automatically changes
at the beginning of each month (
"Original" at the time of purchase.
138 Troubleshooting
page 104).
page 105).
page 102). The system is set to
page 38).