Block Diagram Overview - Pioneer PRV-LX1 Training Manual

Block Diagram Overview

The main circuit board assembly in this device is a very high quality
Pentium based personal computer main board. It interfaces directly
with the front panel control by an RS232 connection on COM 2. In
addition it has front and rear USB ports, a RS232 connection for a
UPS, 3 PCI slots (2 used), an Ethernet connection and VGA output.
Main system processor (Intel Celeron 2 GHz) with 256 Mb ram.
The ATX power assembly is similar to a home or office PC supply. It
provides +12, -12, +5, -5 and +3.3 voltage supplies to the PWRB
assembly.
This main power supply assembly provides DC supply to all circuit
boards and drives 3 of the 5 fans used in this product.
This assembly contains the RS422 interface and output RS422
connector. It also interfaces the external sync input to the DECB
board and the LTC (linear time code) to the PCIB board.
The RS422 input connector assembly provides input to the 422 driver
IC located on the JKDB board.
Headphone output volume and driver assembly. Located on the front
panel.
Front panel assembly. This board includes the florescent display
driver and IR remote control decoder. This board along with its main
CPU communicate directly to the PC motherboard through the RS232
Com 2 port.
(PC Mother Board)
(ATX Power)
(PWRB)
(JKDB)
(422IB)
(HPVB)
(FLKB)
6.