Acer AL1702 AL1702W User's Guide - Page 15

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Screen image is not centered or sized *Adjust pixel frequency (CLOCK) and properly. FOCUS or press hot-key (AUTO) Picture has color defects *Adjust RGB color or select color (white does not look white) temperature Horizontal or vertical disturbances on *Use win 95/98 shut-down mode the screen Adjust CLOCK and FOCUS or perform hot- key (AUTO-key). 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 and CLOCK adjustment use "dot-pattern" or win 95/98 shut-down mode pattern. 14

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14
Screen image is not centered or sized
properly.
*Adjust pixel frequency (CLOCK) and
FOCUS or press hot-key (AUTO)
Picture has color defects
(white does not look white)
*Adjust RGB color or select color
temperature
Horizontal or vertical disturbances on
the screen
*Use win 95/98 shut-down mode
Adjust
CLOCK
and
FOCUS
or
perform hot- key (AUTO-key).
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 and CLOCK adjustment use “dot-pattern” or win 95/98 shut-down
mode pattern.