Sharp 64LHP5000 Service Manual page 120

64LHP5000
PROJECTOR UNIT
Ë VIDEO ASSY (1/2)
A
B
B
2/2
C
IC5254:
DAC
(DC control)
block
D
B
1/2
1
2
IC5255, Q5313-Q5317:
PANEL signal generation circuit for screen size 4:3
Q5288-Q5290, Q5318-Q5320:
Black extension circuit (Black level compensation)
IC5254: DAC BLOCK (DC CONTROL)
2
3
Q5307-Q5312:
V BLK width extension for HD
Not used
Q5272-Q5281, Q5285, Q5305:ABL & ACL block
3
120
4
IC5253, Q5291-Q5299:
Circuit switching between
CCD signal and PANEL signal
2
3
1
Y color
IC5251:
R.G.B.
difference
4
Conversio