Sony KDL-32CX525 / KDL-40CX525 / KDL-46CX525 Service Manual ▷ View online
KDL-32CX525/40CX525/46CX525 16
SECTION 3 - CHASSIS OVERVIEW
OVERVIEW
The primary circuits contained in the AZ2-F chassis consists of a Main Board (designated as the BATV board), Power Supply Board (G2A for
the 32” models, G2B for the 40” models, and G3 for the 46” models), the Motion Sensor Board (HMS3), IR Board (HLR2), Switch Unit, and the
LCD Panel assembly, which includes the Timing Control (TCON) Board and Inverter Board.
NOTE: For connector part number information, refer to
NOTE: For connector part number information, refer to
“Connectors” on page 48
. For Wire Dressing information, refer to
“Wire Dressing Diagrams”
on page 51
.
SWITCH
UNIT
HLR2
HMS3
G2A
TCON
BATV
INV
FIGURE 3-1. KDL-32CX525 ONLY
KDL-32CX525/40CX525/46CX525 17
SECTION 3 - CHASSIS OVERVIEW
SWITCH
UNIT
HLR2
HMS3
G2B
INV
BATV
FIGURE 3-2. KDL-40CX525 ONLY
SWITCH
UNIT
HLR2
HMS3
G3
BATV
TCON
INV
FIGURE 3-3. KDL-46CX525 ONLY
KDL-32CX525/40CX525/46CX525 18
SECTION 3 - CHASSIS OVERVIEW
OVERALL CIRCUIT DESCRIPTIONS
“Figure 3-4. Block Diagram” on page 20
provides an overview of
the AZ2-F chassis. Below is a description of the components and
their functions.
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).
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
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
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
LVDS Transmitter: Integrated into IC9000 is a Low Voltage Differential
Signaling (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 TCON circuits located internally to the LCD
panel.
Scan Converter: Signal processing circuit that performs resolution
Scan Converter: Signal processing circuit that performs resolution
conversion (aspect ratio) and interlaced to progressive scan (IP)
conversion
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
shutdown signal to the processor.
KDL-32CX525/40CX525/46CX525 19
SECTION 3 - CHASSIS OVERVIEW
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:
● G2A-Board (32”)
● G2B-Board (40”)
● G3-Board (46”)
There are 2 distinct sections on the power supply:
Standby Supply: Continuously operational as long as AC power is
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
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 an regulated 24V source
for the LED power supply circuits.
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 backlight 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, TCON Board, and
the Inverter Board.
The LCD Panel contains the actual liquid crystals, color filters, and
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 TCON performs all the control, timing, charge, and discharge
The TCON performs all the control, timing, charge, and discharge
functions driving the operation of the LCD Panel.
TCON BOARD
The TCON Board communicates between the LCD Panel and the
microprocessor on the Main Board. (NOTE: The TCON Board is not
available as a replacement part for all models.)
Click on the first or last page to see other KDL-32CX525 / KDL-40CX525 / KDL-46CX525 service manuals if exist.