AOC 223Vw user manual Blue

The power LED is ON , but	*Computer Power Switch should be in
there’s no video or no picture.	the ON position.
	*Computer Video Card should be snugly
	seated in its slot
	*Make sure monitor’s video cable is
	properly connected to the computer.
	*Inspect monitor’s video cable and make
	sure none of the pins are bent.
	*Make sure computer is operational by
	hitting the CAPS LOCK key on the
	keyboard while observing the CAPS
	LOCK LED. The LED should either
	turn ON or OFF after hitting the CAPS
	LOCK key.
Missing one of the primary	*Inspect the monitor’s video cable and
colors (RED, GREEN, or	make sure that none of the pins are
BLUE)	bent.
Screen image is not centered or	*Adjust H-Position and V-Position or
sized properly.	press hot-key (AUTO).
Picture has color defects	*Adjust RGB color or select a pre-set
(white does not look white)	color temperature from OSD.
Horizontal or vertical	*Use win 95/98 shut-down mode Adjust
disturbances on the screen	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 .

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