Compaq 1600XL - Manual (Page 75)

P RESARIO N OTEBOOK M AINTENANCE AND S ERVICE G UIDE 1600XL S ERIES T ROUBLESHOOTING 27
Presario 1600XL Series
Model 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143, 1600-XL144,
1600-XL146, 1600-XL147, 1600-XL150 XL156, XL157, XL255, XL256, XL257, and XL258
Solving Display Problems
Problem Probable Cause Solution(s)
Screen is dim. Brightness Control
(if available) is not set
properly.
Adjust the Brightness of the
display by pressing Fn+F7 or
Fn+F8.
Computer screen is in direct
light.
Tilt display or move computer.
Screen is blank. Screen save was initiated by
Power Management due to
lack of user activity.
Press any key or touch the
TouchPad.
Display has overheated. If the Notebook is in direct
sunlight, move it and allow it to
cool off.
Display is blank and
the Suspend icon is
flashing.
System is in Suspend mode. Press any key or touch the
TouchPad.
Internal display is
blank and the screen
on an external monitor
displays information.
Display function was switched
to the external monitor.
Press Fn+F3 to switch between
LCD or CRT.
Internal display
flashes or has garbled
characters when
Notebook is connected
to external monitor.
Using 1024 x 768 or higher
resolution on external monitor
and toggling back to internal
display, which supports up to
800 x 600.
Restart the Notebook.
The light tubes on the
edge of the display
panel do not light up
at all and the Power-
On Self-Test (POST)
completes when the
unit is powered up.**
Improper backlight or display
cable connections
Replace the display assembly.
Defective inverter board. Replace the display assembly.
Defective display cable. Replace the display assembly.
Defective display panel. Replace the display assembly.
Defective system board. Replace the system board.