Backplane Board P/N 100571 - JVC 330 Service Manual

/LEDBL1 Brightness
/LEDBLO Brightness
RS232 #1 RS232 #2
RXD1 RXD2
TXD1 TXD2
/CTS1 /CTS2
/RTS1 /RTS2
DCD1
COMRTN
Input Description
/RIRIN Input from rear IR Receiver
/EXTIRIN Differential input from IR Receiver
EXTIRIN Differential input from IR Receiver
/FIRIN Input from front IR Receiver

Backplane Board p/n 100571

The Backplane is a PCB that serves as an interconnecting point for the tethered
and IR remotes, power supplies, CRTs, Yokes, ILA
external video. The Backplane does not modify signals in any way—it merely
provides an interfacing point for most of the wiring in the projector in lieu of
cabling. Refer to Figure 2-18 for a general idea of how the wiring is
interconnected in the projector.
System
Power
Power
Control
Supply
Power
High
Voltage
Control
Power
Supply
Model 330, 340SC and 370SC Service Manual
RS-232 Interface Signals
Description
Receive data
Transmit data
/Clear to send
/Ready to send
Carrier detect
Return
IR Interface
Tethered
External Video
Remote
Signals
or PC
Backplane
PCBs
Chapter 2—Functional Description
®
assemblies, PCBs and
Video and
Deflection
CRTs,
Signals
Yokes,
Video Amps
ILAs
ILA Biases
2-71