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24 T
ROUBLESHOOTING
P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1200XL S
ERIES
Presario 1200 Series
Models: XL101-XL113, XL115, XL118-XL127
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.
Use 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 have toggled 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 no 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.
The light tubes on the
edge of the display
panel do not light up
at all and Power-On
Self-Test (POST) does
not complete when the
unit is powered up.**
Defective system board. Replace the system board.
Backlight (brightness)
cannot be adjusted
with Fn+F7 or Fn+F8.
Improper display cable
connections.
1. Reseat the display cable to the
system board.
2. Replace the display assembly.
Solving Display Problems
Problem Probable Cause Solution(s)