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Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1255, 1256, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and 1275
Screen is dim. Control for brightness or contrast
(if applicable) is not set properly.
Adjust the Brightness of the
display by using Fn + F7 or
Fn + F8.
Adjust the Contrast of the display
by using Fn + F5 or Fn + F6.
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
Touch Pad.
Display has overheated. If computer is in direct sunlight,
move it and allow it to cool off.
Display is blank and the Power icon is
flashing, or the Suspend icon is present.
System is in Suspend mode. Press any key or touch the
Touch Pad.
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 computer is connected to
external monitor.
Using 1024 × 768 or higher
resolution on external monitor
and have toggled back to internal
display, which supports up to 800
× 600.
Restart the computer.
The light tube-s on the edge of the display
panel do not light up at all and 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.
Defective inverter board. Replace the display assembly.
Defective display cable. Replace the display assembly.
Defective system board. Replace the system board.
Contrast cannot be adjusted with
Fn + F5 or Fn + F6.
System may have a TFT display
(which is always at maximum
contrast)
No adjustment is possible.
Improper display-cable
connections.
1. Reseat the display cable to the
system board.
2. Replace the display assembly.
Defective inverter board. Replace the display assembly.
Defective display cable. Replace the display assembly.
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...1272,%201273,%201274,%20and%201275/solving.html (5 of 8)6/28/2004 9:23:11 AM