AOC 193P Instruction Manual

TECHNICAL SUPPORT (FAQ)

Problem & Question Possible Solution
Power LED is not on *Check if the Power Switch is in the ON
position
*Power Cord should be connected
No Plug & Play *Check if the PC system is Plug & Play
compatible
*Check if the Video Card is Plug & Play
compatible
*Check if the D-15 plug pin of Video
Cable is bent
Picture is fuzzy *Adjust the Contrast and Brightness
Controls.
Picture bounces or a wave *Move electrical devices that may cause
pattern is present in the picture electrical interference.
The power LED is ON (Red) *Computer Power Switch should be in
but there?s no video or no the ON position.
picture. *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 pixel frequency (CLOCK) and
sized 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 *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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