Chapter 4 - Media Receiver Circuit Description; Overview; Circuit Descriptions; Bub Board - Sony KDL46XBR10 Training Manual

Overview

The media receiver unit is an integrated device included with the KDL46/
52XBR10 models. Designated as the MBT-WZ5, the monitor section is
incapable of operating without it. All video sources are processed within
the media receiver and transmitted to the monitor. Even thought the monitor
uses a traditional IR remote system, communications between the media
receiver and monitor are performed with a wireless RF system.

Circuit descriptions

Referring to Figure 3-1, the various circuit boards and module assemblies
are shown.

BUB Board

Components on the BUB board are responsible for video input selection
and processing of the selected input. 8 sources are included that can
input high-definition video content. This includes the ATSC tuner, 4 HDMI,
2 component and the PC input. Component input 1 accepts composite
or component inputs. It can automatically detect the type of signal using
switches in the jacks or can be forced to the input type in the user menu.
The front of the unit contains the HDMI 2, composite 2 and USB 2.0
inputs.

Analog Sources

Analog video sources are input directly to IC7000 where they are processed
based on the format and resolution of the signal. All video content exits
IC7000 as 1920 X 1080p transmitted as Low-Voltage Differential Signaling
(LVDS) and is received by the wireless module for transmission to the
monitor. PC video is input via the 15-pin D-Sub connector.
Analog audio sources are selected and input to audio DSP IC2003.
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Chapter 4 – Media Receiver Circuit Description

Digital Sources

All 4 HDMI inputs are input to IC5000 where the inputs are selected and
equalized from high impedance to low impedance for input to IC7000.
IC5000 contains a shared memory space for EDID information based on
the selected input.
Digital ATSC signals received from the tuner are input to IC7000 as
differential intermediate frequency (IF).
The front USB 2.0 input allows for viewing of JPEG formatted photos and
MPEG2 encoded video content. MP3 audio content is also supported.

Audio Output

Selected audio sources are input to IC2003 for processing and equalizing.
The output of IC2003 is PWM and input to Audio Sub IC2301 where the
audio content is distributed to 3 locations.
I2S format audio is directed to the wireless module for transmission to
the monitor. L/R analog and SPDIF format audio is available for the audio
output sources.

TV MICRO

IC3002 is the system microprocessor. Along with controlling IC7000, it
also functions as the user interface for control of the various functions.
Communications and control of the monitor functions is achieved by
sending the remote control data to a bi-directional RF remote transmitter.
IC3002 also monitors various circuits and voltages for protection and
will shut the unit down along with displaying and recording any faults
detected.
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