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"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1683, 1685, 1687, 1688, and 1690
Problem Probable Cause Solution(s)
This display panel has a continuous pattern
across it (e.g., a "jailbars" pattern), has a
single color on it, or has garbled graphics
across the entire panel. This failure is for
patterns across the entire panel (not just
on one section).
Improper display cable
connections
Reseat the display cable to the
following until the problem is solved:
1. System board
2. Display assembly
Defective display cable. Replace the display assembly.
Defective inverter board. Replace the display assembly.
Defective system board. Replace the system board.
Ghost bars extending from graphics on the
display.
Common characteristic of
STN displays.
1. Change the background colors.
2. Adjust the Contrast of the display
by using Fn + F5 (¯ ) or Fn + F6
(- ).
A single line, small group of lines, or block
appears on the display panel. This failure
occurs in only a section of the display panel.
Defective display panel. Replace the display assembly.
NOTE:
To perform a "self-test" on an external VGA color or monochrome monitor, complete the following steps:
The screen should be white. A narrow black border may also appear on the left and right sides of the
display. Either of these displays indicates that the monitor is working properly.
Solving Hard Drive Problems
Some common causes and solutions for hard drive problems are listed in the following table.
CAUTION: To prevent loss of information, always maintain an up-to-date backup of your hard drive
at all times, in case of errors or failures.
Solving Hard Drive Problems
Problem Probable Cause Solution(s)
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