Planar PL1520M User Manual

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TECHNICAL SUPPORT (FAQ) (cont.) 
 
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. 
 
ERROR  MESSAGE & POSSIBLE  SOLUTION
 
 
NO SIGNAL 
 
1.  Check that the signal cables are proper connected , If the connector is 
loose,  tighten the connector’s screws. 
2.  Check the signal-cable’s connection pins for damage. 
 
 
UNSUPPORTED: 
 
Your computer resolution is out of VESA-SPEC