Rc Receptor Board Assembly - Epson EMP-8000 Service Manual

2.10. RC Recept or Boa r d Assem bly
Detects the infrared rays signal from the remote controller. The receptor board assembly is
attached to the ballast unit (the front side) and lamp cover unit (the rear side).
The receptor board assembly is shown in Figure2-29.
Receptor board
(Front)
Ballast unit
The receptor board assembly signal is being jointed the cable to CN1405 (the front)/CN1002
(the rear) of the main board ASSY unit and the output signals and Repeater input signal (the
serial data) from both receptor board assemblies are an information retrieval decoder and be
converted to 16 bit parallel data.
1. The Main board Assy unit performs the power ON/OFF operation and the starting up
menus, utilizing the serial data received from the remote controller (button switches and
pointers).
2. The serial signal send to the Driver board Assy via the Main board Assy unit performs the
display control (Freeze / Blank/etc.).
3. The serial signal send to the AU board via the Main board Assy unit performs the audio vol-
ume control.
Circuit block
Remote controller
Receiver
Revision:A
EMP-9000/8000
Figure2-29 Receptor board assembly
CN1405
RC Receptor board
Assembly
CN1002
IF unit
CN1502
CN302 CN303
Figure2-30
2-28
Main board Assy unit
IR decoder
(IC1507)
Address, I/O
Bus controller
(IC1108)
CPU
(IC1101)
Receptor board
(Rear)
Lamp cover unit
AU board
Assembly
SDA/SCK
Driver board Assy
SEIKO EPSON