Sony HDVF-C35W, Руководство по обслуживанию

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1-1 (E)
HDVF-C35W
Section 1
Service Overview
PR-309 board
PR-308 board
RE-249 board
LE-341 board
LCD module LE-342 board
SW-1366 board
IF-1070 board
1-1. Board Location
n
.
The IF-1070 board is secured to the LCD module with
the screw.
. The IF-1070 board is not the service parts. When the
replacement is required, replace the LCD module.
1-2. Circuit Description
1-2-1. PR-308 Board
The PR-308 board consists of an analog signal low-pass
filter, CPU, LED driver, and FPGA flash memory.
Analog signal low-pass filter
The analog HD YPbPr signal input from a VF cable is
limited in band using a low-pass filter and supplied to the
AD converter (IC1) on the PR-309 board. An analog HD
Y signal is sync-separated using IC6, and H and V sync
signals are supplied to the FPGA (IC100) on the PR-309
board.
CPU (IC400)
CPU processes volume and switch inputs and controls a
PR-309 board device and LCD module through I
2
C and
SPI buses.
LED driver (IC600)
The LED driver turns on and off an indicator so as to
correspond to the brightness set in a menu, according to the
LED indicator ON/OFF signals of the R-Tally and G-Tally
ON/OFF signals and I
2
C signal sent through a VF cable.
FPGA flash memory (IC411)
The FPGA flash memory stores the data for FPGA (IC100)
on the PR-309 board.
1-2-2. PR-309 Board
The PR-309 board consists of an AD converter, FPGA,
image processing block, and clock generator.
AD converter (IC1: I
2
C control)
The analog HD YPbPr signal supplied from the PR-308
board is digitally converted by ten bits and supplied to
FPGA (IC100).