No Display On Screen (Screen Is Black, Led Is Amber) - NEC AccuSync LCD51VM Series Service Manual

1. No Display on Screen (Screen is Black, LED is Amber)

Does OSM display when you
push "AUTO/RESET", "+", "-",
"SELECT" button?
YES
NO
Proceed Section 2 "No Display
On Screen".
When a signal isn't input, it is indicated with "NO SIGNAL".
It is indicated with "OUT OF RANGE" at the time of the frequency that it
over spec.timing.
Check if the sync signal from Computer is output
and if the video cable is connected normally.
NG
OK
Proceed Section 7 "Checking the Scaling IC
Operation".
6-2
Input the sync signal of computer,
or change the cable.