Display Troubleshooting
(A2,
A18,
A19,
A27)
This section contains the following information:
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Evaluating your Display
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Troubleshooting a White Display
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Troubleshooting a Black Display
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Troubleshooting a Display with Color Problems
Evaluating your Display
Switch the analyzer off, and then on. The display should be bright with the
annotation legible and intelligible. There are four criteria against which your
display is measured:
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Background Lamp Intensity
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Green, Red or Blue Stuck Pixels
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Dark Stuck Pixels
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Newtons
Riis
Evaluate the display as follows:
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If either the
Al8
LCD, A19 GSP, A9 CPU or
AZ7
backlight inverter assemblies
are replaced, perform a visual inspection of the display.
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If it appears that there is a problem with the display, refer to the
troubleshooting information that follows
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If the new display appears dim or doesn’t light, see “Backlight Intensity
Check,
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next.
Digital Control Troubleshooting
6-7
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