LCD DIGITAL LCD TV - SONY KDL-32EX725_40EX725_55EX725 - Circuit Boards layout and Functions
Sony KDL-32EX725_40EX725_55EX725 – LCD
DIGITAL TV _ Boards layout to different models
to this LCD TV & the function details
Universal Remote Control Set-up Code list [With different brand remote controls to Sony TVs]
Television system:
Analog: NTSC 3.58/ PAL-M / PAL-N
Digital: SBTVD
Channel coverage:
VHF: 2-13, UHF: 14-69
CATV (Analog): 1-135
COMPONENT IN
YPBPR(Component Video)
Signal format: 480i, 480p, 576i,
576p,720p, 1080i, 1080p
AUDIO
HDMI IN 1/2/3/4
HDMI: Video: 480i, 480p, 576i,
576p, 720p, 720/24p/30p, 1080i, 1080p, 1080/24p/30p
HDMI: Audio: Two channel linear
PCM 32, 44.1 and 48 kHz, 16, 20 and 24 bits, Dolby Digital
Analog audio input (minijack)
(HDMI IN 4 only)
ARC (Audio Return Channel) (HDMI
IN 1 only)
Speaker output: 10 W + 10 WCIRCUIT BOARDS' LAYOUT AND FUNCTIONS DETAILS
The primary circuits contained in
the AZ2-F chassis for the consists of a Main Board (designated as the BATV
board), Power Supply Board (designated as the G10A Board for the 32” models,
G4B Board for the 40” models, and G6A Board and G8A Board for the 55” models),
the Motion Sensor (HMS3 Board), the IR Board (HLR2 Board), the Switch Unit, and
the LCD Panel assembly.
MAIN BOARD
Common to all models the Main
Board, designated as the BATV Board, contains the TV control, video, and audio
processing circuitry. All these
functions are accomplished using the X-Reality Processor.
TUNER
The tuner is a combination
ATSC/NTSC unit. It can receive traditional analog NTSC signals via cable or
terrestrial along with ATSC digital signals via terrestrial (8VSB) or cable (64
or 256 QAM)
AUDIO AMPLIFIER
The audio amplifier (IC4601)
amplifies the digital audio output of the X-Reality processor and sends it to
the speakers.
TEMPERATURE SENSOR
The temperature sensor detects
over-temperature conditions on the Main Board, LCD Panel, or ambient room
temperature and sends the shut-down signal to the processor.
X-REALITY PROCESSOR
IC9000 performs the majority of
the necessary audio and video processing on the main board. TV Microprocessor: The CPU internal to the X-Reality
processor controls all aspects of the television functions. Input from the user
along with monitoring of critical circuits is also performed by this CPU. Digital Audio and Video Decoder: The MPEG2
and Digital Dolby audio streams are received from the tuner for decompression.
All video sources which are not native 1920 X 1080p 60HZ are scaled to this
resolution. Digital audio content is output to the class D amplifier for
processing and amplification.
HDMI Input and Switching: The
customer can select the HDMI1, HDMI2, HDMI3, HDMI4 input. Each HDMI input
contains a common EDI NVM (not shown) to provide display information data to
any device connected via the HDMI inputs.
LVDS Transmitter:Integrated into IC9000 is a Low Voltage Differential
Signalling (LVDS) transmitter. This circuit converts the 8-bit parallel RGB
video information into a set of high speed serial lines for noise-free transmission to the T-CON
circuits located internally to the LCD panel.
Scan Converter: Signal processing circuit that performs resolution
conversion (aspect ratio) and interlaced to Progressive scan (IP) conversion.
POWER SUPPLY
There are different Power Supply
Boards used in the models in this manual. The type of board depends on the size
of LCD panel. They are:
G10A-Board (32”)
G4B-Board (40”)
G6A-Board (55”)
Note: the G8A in the 55” models
is the Power Supply Board for the Panel LED backlight system. There are 2 distinct sections on the power
supply:
Standby Supply: Continuously
operational as long as AC power is applied, the standby supply generates 3.3V
for the circuits requiring power while the unit is turned off. An unregulated
19V line is present to provide power to the main relay, PFC and main power
supply at turn-on.
Main Supply: Once the
power supply receives a power-on command from the CPU on the Main Board, the
main switching supply is turned on to provide a regulated 12V source and a
regulated 24V source for the LED power supply circuits.
POWER SUPPLY FOR BACKLIGHT SYSTEM
The G8A-Board is the Power Supply
Board for the Panel LED backlighting system (including the LED Driver Board)
for the 55” model only. 390V, 19V, and 12V are applied to the board from the
G6A Board to develop the 24V. The 24V is applied to the LD Driver board.
LD BOARD (LED DRIVER BOARD)
The LED Driver Board is
controlled by the T-CON/HFR Board to perform overall backlight power-on,
backlight level, and local dimming
functions. This board takes the 24V from the Power Supply Board (or G8A
Board for the 55” models) and develops the negative and positive voltages to
directly drive the LEDs in the panel assembly.
3D IR EMITTER
Designated as the HEM2 Board,
this board is the internal 3D IR Emitter.
SWITCH UNIT
This board contains the power,
channel, and volume up/down and menu buttons.
MOTION SENSOR BOARD
Designated as the HMS3 Board, the
Motion Sensor Board contains the circuits for the Motion Sensor. The Motion
Sensor detects when there is movement in front of the TV. If there is no
movement in front of the TV after a predetermine amount of time the back-light
is turned off (audio present). After an extended period of time the TV is
completely turned off.
IR BOARD
Designated as the HLR2 Board, the
IR Board contains the power, standby, and timer LED’s are located on this board
along with the IR remote receiver and light level sensor.
LCD PANEL ASSEMBLY
The LCD Panel Assembly includes
the LCD Panel, T-CON Board, and LED Backlight system.
NOTE: The LD Board is not
included with the LCD Panel. The LCD
Panel contains the actual liquid crystals, color filters, and polarizers. The
liquid crystals are manipulated by the applied voltage to pass a specific
amount of light - from the backlight- depending on the level of voltage
applied. The T-CON performs all the
control, timing, charge, and discharge functions driving the operation of the
LCD Panel. A new LCD Panel assembly from
parts will include the following items.
LCD Panel
LED Backlighting Components
T-CON Board
T-CON BOARD
The T-CON Board communicates
between the LCD Panel and the microprocessor on the Main Board.
(NOTE: The
T-CON Board is not available as a replacement part for all models.)
UNIVERSAL REMOTE CONTROL SET-UP CODE LIST
0018 0045 0101 0131 0154 0177
0211 0301 0302 0357 0358 0609 0785