Dell D1901N Manuale d'uso - Pagina 16

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CLOCK (pixel frequency) controls the number of pixels scanned by one

horizontal sweep. If the frequency is not correct, the screen shows vertical

stripes and the picture has not correct width.

FOCUS adjusts the phase of the pixel clock signal. With a wrong phase

adjustment the picture has horizontal disturbances in light picture.

For

FOCUS

95/98/2000/ME/XP shut-down mode pattern.

ERROR MESSAGE & POSSIBLE SOLUTION

CABLE NOT CONNECTED :

Check that the signal-cable is properly connected, If the connector is

loose, tighten the connector's screws.

Check the signal-cable's connection pins for damage.

INPUT NOT SUPPORT :

Your computer has been set to unsuitable display mode, set the computer to

display mode given in the following table.

and

CLOCK

adjustment

use

"dot-pattern"

win