Service manual

EPSON ELP-3500 Service Manual
2-12
Circuit Block Diagram of the Video Board
Figure 2-11.
F600 CCP2E20 (600 mA)
F601 CCP2E20 (600 mA)
F602 CCP2E13 (520 mA)
C
N
6
0
0
Regulator
Regulator
IC600
line buffer
IC601
DAC
Temperature
detection
IC800
display timing
generator
Shift clock
level shifter
8 ch
I/O
8 ch
DAC
Sub
brightness
circuit
Driver
LCCOM
control
Light Valve R Driver
(CN850)
Light Valve G Driver
(CN900)
Light Valve B Driver
(CN950)
Output divider
(Analog)
R1 ~ R6
Output divider
(Analog)
G1 ~ 6
Output divider
(Analog)
B1 ~ 6
Fuses
Power
supply
+18 V
+12 V
+5 V
5 VDA
RT 0 ~ 7
GT 0 ~ 7
BT 0 ~ 7
Data clock
H start
Display control signal
SCL/SDA
Data clock
Lamp 2
SCK
1 ~ 6
DXIN
CLXIN
ROT
RAD
(J1/J2)
RAD
(J1/J2)
RAD (J1/J2)
LCCOM
R/G/B
R 1/2
G 1/2
Output lamp
Analog R/G/B
Connecst to
the main
board CN200
Video AMP
B 1/2
R 1/2
G 1/2
B 1/2
+15 V