Sony KDL-32EX727 / KDL-40EX727 / KDL-46EX727 / KDL-55EX727 Service Manual ▷ View online
KDL-32EX727/40EX727/46EX727/55EX727
15
OVERVIEW
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, G5D Board for the 46” 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.
NOTE: For connector part number information, refer to
NOTE: For connector part number information, refer to
“Connectors” on page 63
. For Wire Dressing information, refer to
“Wire Dressing” on page 66
.
SWITCH
UNIT
HLR2
HEM2
HMS3
TCON
LD
G10A
BATV
FIGURE 3-1. BOARD LAYOUT FOR KDL-32EX727
SECTION 3 - CHASSIS OVERVIEW
KDL-32EX727/40EX727/46EX727/55EX727
16
SECTION 3 - CHASSIS OVERVIEW
SWITCH
UNIT
HLR2
HEM2
HMS3
TCON
LD
G4B
BATV
FIGURE 3-2. BOARD LAYOUT FOR KDL-40EX727
SWITCH
UNIT
HLR2
HEM2
HMS3
TCON
LD
G5D
BATV
FIGURE 3-3. BOARD LAYOUT FOR KDL-46EX727
KDL-32EX727/40EX727/46EX727/55EX727
17
SECTION 3 - CHASSIS OVERVIEW
SWITCH
UNIT
HLR2
HEM2
HMS3
TCON
LD
G6A
G8A
BATV
FIGURE 3-4. BOARD LAYOUT FOR KDL-55EX727 ONLY
KDL-32EX727/40EX727/46EX727/55EX727
18
SECTION 3 - CHASSIS OVERVIEW
OVERALL CIRCUIT DESCRIPTION
“Figure 3-5. Overall Block Diagram” on page 21
provides an overview
of the AZ2-F chassis. The following are descriptions of the boards
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
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 T-CON 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.
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