Compaq LTE Elite Maintenance And Service Manual page 64

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Problem
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The 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).
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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.
******
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The display
switch does not
function.
(Section 1.4)
Improper display cable
connections.
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Defective inverter
board.
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Defective display cable.
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Defective display panel.
Probable Cause
Improper display cable
connections.
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Defective display cable.
-------------------------------------------------------
Defective inverter
board.
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Defective system board.
Defective display panel.
Defective display switch
spring or keyboard
cover.
Reseat the display cable to
the following one at a time
until the problem is solved:
1. Inverter board.
2. System board.
3. Display panel.
Replace the inverter board.
****
Replace the display cable.
****
Replace the display panel.
****
Solution(s)
Reseat the display cable to
the following until the
problem is solved:
1. System board
2. Display board
3. Inverter board
Replace the display cable.
****
Replace the inverter board
(on color STN models only).
Replace the system board.
Replace the display panel.
****
Remove keyboard cover. Push
the display switch on the
power interface board. If
display switch functions,
install the following new