6-4
2.2 Black Screen, LED Green, and No OSM Present
Is 18V available at CN2A1 Pin 10,11,12.13?
Is 3.3V available at CN2A1 Pin 4?
Is fixation 0V available CN2A1 Pin 3?
Check the power supply.
Check peripheral circuits of IC551/IC552.
Is CN551 inserted properly?
Is 3.3V available at IC401 VDD3.3?
Is 2.5V available at IC401 VDD2.5?
Is 130MHz inputted into IC401 W13?
Is 125MHz inputted into Y13?
However, clock is not continuance because spectrum
diffusion irregularity hangs.
Check peripheral circuits of
X402, IC403.
Is the pulse input into IC401 C1?
NO
YES
NO
YES
NO
Check peripheral circuits of IC804 or the power supply.
Is there a DATA input available at the input circuit (In
such cases as IC551/IC552 pin 8)?
NO
YES
YES
Summary of Contents for LCD2080UX - MultiSync - 20.1" LCD Monitor
Page 4: ...1 1 User s Manual 1 A Version MultiSync LCD2080UX TM ...
Page 30: ...1 27 2 B Version MultiSync LCD2080UX User s Manual ...
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Page 453: ...SCHEMATIC DIAGRAM LCD2080UX POWER PWB 1 1 10 15 ...