HannsG hc194d User Guide

 

18 

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 
pattern is present in the 
picture 

*Move electrical devices that may cause electrical 

interference. 

The power LED is ON 
(orange) but there’s no 
video or no picture. 

*Computer Power Switch should be in 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 
colors (RED, GREEN, or 
BLUE) 

*Inspect the monitor’s video cable and make sure that 

none of the pins are bent. 

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). 

ƒ

  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. 

ƒ

 

FOCUS adjusts the phase of the pixel clock signal. With a wrong phase adjustment the 
picture has horizontal disturbances in light picture. 

ƒ

 

For FOCUS and CLOCK adjustment use “dot-pattern” or win 95/98 shut-down mode 
pattern.