Epson PowerLite 5000, Service Manual

Page: 44 / 127

EPSON PowerLite 5000 Service Manual
2-14
Circuit Block Diagram of the Driver Board
B
Filter/Gate
F251 4511.25 A
+5 V REGULATOR
F250 4511.25 A
C
N
1
0
0
IC100
Display
Controller
F252CCP2E10 A
+3.3 V
REGULATOR
GD0-7
RD0-7
+22V
+12 V
+5 V
SCL / SDA
IC300
Flash ROM
BD0-7
+3.3 V
RPD10-17/RQD10-17
+12 V
+18 V
G
Shift Clock 1-6
Display
Control
Signals
+12 V
REGULATOR
R
LCCOM
(Timing)
8CH DAC
IC250
Buffer
CLAMP (Red)
CLAMP (Green)
CLAMP (Blue)
+18 V REGULATOR
Display Timing (Red)
Display Timing (Green)
Display Timing (Blue)
Control Signal
Level Shifter
SHIFT Clock
Level shifter
Red Light Valve Driver
(IC900)
Green Light Valve Driver
(IC800)
Blue Light Valve Driver
(IC700)
GPD10-17/GQD10-17
BPD10-17/BQD10-17
+5 V
+3.3 V
R G
B
CN700 CN800 CN900
Figure 2-11