Epson EMP-S4 - Operation Button Lock Function

2-4
EMP-S4
SEIKO EPSON Revision:B
2.1.2 Control Circuitry
The control circuits are illustrated in the following block diagram.
Figure 2-3. Control Circuit Block Diagram
Image Processor
Main CPU
Frame Memory
Resizing
Frame Rate Conversion
Color Space Conversion
OSD
ADC
Video Decoder
PW190
( Pixelworks )
CVBS
RCA
Y/C
DIN4
Driver ASIC
GAUGE5S
AMP
NRS
FLASH ROM
16Mbit
SST 36VF1602E
(SST)
KEY
MATRIX
LED
POWER SUPPLY LAMP Ballast
AC
PC/VIDEO I/F
Power Supply
Circuit
HU MA N I/F
PANEL DRIVER B LO CK
IR
DD5
DD5
DD5
Thermister
Thermister
Newly added part
DDC EEPROM
BR24C21F
( ROHM )
PC
FAN Driver
MONITOR OUT TEST
MONITOR OUT TEST
CONECTOR
CONECTOR
USB
USB
-B
DSUB15
DDC
RGB YUV
Monitor Out
TP
TP
A015
15
2
(TI)
(T I )
2.8W
RCA-
RCA-
L
RCA-
RCA-
R
Vol Control,Mute
VI
VI
DEO
Audio
Audio
Bu
Bu
ffe
ffe
r
Buzzer
Buzzer
4W
Sync
Video AMP
Video AMP
EL8302
EL8302
DSUB15
DDC
RGB YUV
Sync