Samsung PN42A450 - Page 54

Troubleshooting
Samsung Electronics 4-31
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Y-RR and Y-FR controls
Test Point
Set the main reset (rising : 60usec, falling : 80usec) by change the value of variable resistor.
<42">
<50">
Test Point
▶The picture is only for 50".
42" has only Falling ramp variable resistor.
60usec
80usec
Rising ramp
variable resistor
Falling ramp
variable resistor