Compaq Armada 1500 Maintenance And Service Manual page 56

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Problem
Characters are dim.
Screen is blank.
Computer screen is blank and
the screen on an external
monitor displays information.
Screen is blank and the
power/suspend light is blinking
Screen is blank, the power/
suspend light is blinking, and
the battery light is blinking
External monitor does not
display information
Distorted or garbled characters
on the screen are mixed with text.
Garbled characters on internal
display or flashing internal display
when connected to external
monitor.
The image on the external
monitor does not fill the screen.
Small red, green, or blue spots
appear on the computer TFT
display.
When in MS-DOS mode,
the image on the computer
display does not fill the screen.
When displaying simultaneously,
the image on the external
monitor may not be centered.
Table 3-28
Solving Screen Problems
Probable Cause
The brightness or contrast
(if applicable) control is not
set properly.
Computer screen is in direct light.
Display is damaged.
You initiated QuickLock/
QuickBlank.
You may have another screen -
blanking utility installed.
Screen save was initiated after
the Power Management timeout
period of inactivity
If an STN screen is used, brightness/
contrast needs adjusting.
Screen has overheated
Suspend was initiated.
Display was switched to the
external monitor.
System is in Suspend
System has entered a low-battery
condition
External monitor was connected after
the computer was turned on
The external monitor signal cable
or power cord is not properly
connected.
The ANSI.SYS driver is not in the
CONFIG.SYS file or the path is
incorrect.
You are using 800 × 600 or higher
resolution on external display and
have toggled back to internal display,
which only supports
640 × 480 resolution.
You are using an external monitor
and simultaneously displaying an
image on the computer display.
Small spots, called on-pixels, often
appear on TFT screens. Compaq
limits the number of these on-pixels
to 0.003% of the approximately
1 million transistors that are on a
12.1-, or 11.3-inch display.
To maintain a high-quality image, the
800 × 600 models do not
stretch the lower-resolution
image of MS-DOS mode to fill the
screen.
Solution(s)
Adjust the control(s)using Fn+F9
(contrast) and Fn+F10 (brightness).
Tilt the display or move computer.
Replace the display.
Enter the password to exit
QuickLock/QuickBlank.
Press any key and/or enter the
password.
Press any key or click the mouse.
Use the hotkeys to adjust the
brightness/contrast.
If the computer is in direct sunlight,
move it an allow it to cool.
Press the suspend button to exit
Suspend.
Press the Fn+F4 hotkey to display
information on the computer screen.
Press the Suspend button to exit
Suspend. Enter the power-on
password if prompted.
Immediately connect the computer to
an external power source or replace
the battery pack.
Press the Fn+F4 hotkey to switch to
the external monitor
Verify the cables are properly
connected.
Add the ANSI.SYS driver to the
CONFIG.SYS file. Add the following
line: DEVICE=C:\ANSI.SYS
Restart the computer. If simultaneous
display is desired, use 640 × 480
resolution.
This is typical; no action is required.
This is typical; no action is required.
This is typical; no action is required.
Troubleshooting 3-29