Sony KDL-32EX525 / KDL-40EX525 Service Manual ▷ View online
KDL-32EX525/40EX525 19
SECTION 3 - CHASSIS OVERVIEW
OVERALL CIRCUIT DESCRIPTION
“Figure 3-3. 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
IC9000.
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: HDMI inputs are switched through
IC5500. Each HDMI input contains a common EDID NVM (internal to
IC5500) 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 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-32EX525/40EX525 20
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:
● GE2 Board (32”)
● GE3 Board (40”)
There are 3 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 unregulated 24V source
for the LED power supply circuits.
Converter: Generates the B+ for the local dimming (LED Drive
Converter: Generates the B+ for the local dimming (LED Drive
Board) circuits to control the backlighting level.
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.
SWITCH UNIT
This board contains the power, channel, and volume up/down and
menu buttons.
LCD PANEL ASSEMBLY
The LCD Panel Assembly includes the LCD Panel, TCON Board,
and LED Backlight system.
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.
A new LCD Panel assembly from parts will include the following
A new LCD Panel assembly from parts will include the following
items.
1. LCD Panel
2. LED Backlighting Components (varies)
3. TCON Board
TCON BOARD
The TCON Board communicates between the LCD Panel and the
microprocessor on the Main Board. The TCON performs all the
control, timing, charge, and discharge functions driving the operation
of the LCD Panel. (NOTE: The TCON Board is not available as a
replacement part for all models).
KDL-32EX525/40EX525
21
SECTION 3 - CHASSIS OVERVIEW
BATV-Board
X-Reality Processor
TV Microprocessor
Video Processing
HDMI Processing
HDCP Processing
IP (Image Processor)
Scan Converter (Scalar)
Audio Processing
Video Switcher
HDMI Switcher
ATSC/NTSC Tuner
Temperature Sensor
Audio Output Amplifier
Control
LVDS
Keys
Power/
SIRCS
LCD Panel Assembly
LCD PANEL
Power Key
Function Keys
Switch Unit
LEDs
IR Sensor
Light Level
HLR2-Board
Power
Main Power Supply
Standby Power Supply
AC Relay
LED Backlight Power Supplies
GE2-Board (32")
GE3-Board (40", 46")
LCD Panel
R
L
RF Input
Component
Composite
PC Input
4 HDMI Inputs
Optical Digital Audio Output
LED
Backlight System
TCON/HFR
Power
AC
Input
2 USB 2.0
Motion Sensor
RJ45 Ethernet
HMS3-Board
Headphone/Analog Audio Output
FIGURE 3-3. OVERALL BLOCK DIAGRAM
DIAGRAMS
BLOCK DIAGRAMS
KDL-32EX525/40EX525
22
SECTION 3 - CHASSIS OVERVIEW
27M
[HORUS3]
4M
[ASCOT2Sip]
[GAIA1a]
41M
0
0
[SEKITO2]
[LNBH23]
[MIC2005]
[TPS2553DBV]
[TPS2553DBV]
[GL850G]
[RTL8201E]
12M
One–
NAND
Muxed
2Gb
DDR3
–1333
2Gb
DDR3
–1333
2Gb
48M
32.76
8K
GND
[PST3629]
[LM75B]
[Sil9287B]
[D–510D]
[D–510D]
[NJU72011RB]
[NJU72040V]
H/L
Push
P
A
N
E
L
41M
Cable
Satellite
Aerial
HDMI1
(ARC)
HDMI2
HDMI3
HDMI4
CVBS
COMP
PC
HP/Line
Out
SPDIF
Main
SPEAKER
LNA
X’tal
SW
LNA
X’tal
Silicon
Tuner
Silicon
Tuner
X_SYSTEM1_RST
IF1
IF2
Zero-IF
27MHz
Ext Demod
IFAGC
Ext Demod
IFAGC
X’tal
TS1
DiSEqC_Out
DiSEqC_In
DiSEqC_In
TS2
DDC
I2CB
DMD_RST
DMD_CLK_ENABLE1
DMD_CLK_ENABLE2
I2CB
Current
Limit
5V
MS
H Con.
USB4
BD
USB3
Wifi
Current
Limit
5V
USB2
USB1
5V
X_SY
ST
EM1
_R
ST
USB
HUB
Crystal
Current
Limit
X
_SYSTEM1
_RST
Ether
Ether
PHY
BACKLIGHT
LVDS_ODD
LVDS_EVEN
TCON
S
A
_MODE/
LU
T_
SEL0
P
EM
_WDT/XBUSY/B
INT
X
_P
EM
_RST/LUT_SEL2/X_FRC_R
S
T
M
O
DE_PEM/TCON_RDY
LUT_SEL1/X_TC
O
N
_RST/LR_F
LA
G
T_
PA
N
EL_SEL
I2C_
C
SYSTEM1_PWR
REG_12V
1.2V
DDC
1.5V
SYSTEM2_PWR
DDC
X’tal
X’tal
AC_MON
Reset
Reset
SYSTEM2_PWR
3.3V
DDC
REG_12V
2.5V
LDO
SYSTEM2_PWR
5V
DDC
3.3V
LDO
3.4V
LDO
REG_12V
SYSTEM2_PWR
S1.8V
LDO
S1.2V
LDO
T-CON_VCC
REG12V
REG12V
STBY 3.3V
AUDIO_12V
AUDIO_12V
Power
BACKLIGHT_ON
DIMMER_DC
TCON-ON
MAIN_PWR
BACKLIGHT_MON
PFC_PWR
AC_MON
DIMMER2
Power_Control
UARTA(LOG)
UARTD
PEM_LOG
MODE_PEM
UARTC(Hotel/ECS)
I2CA(Hotel_Clock)
Reset
SIRCS
TL-JIG
Hotel /ECS
Temp Sensor
Sircs
Temp
Sensor
SIRCS
I2CA
X_Hotel_PWR_CTRL
I2CA (EQSW, Temp Sensor, Hotel Clock)
I2CB (Ext Demod)
I2CC (Panel, RGB Sensor)
UARTA (LOG)
UARTB (RF-Remote)
UARTC (IR Blaster/ECS)
KEY
Light Sensor
Human Sensor
LED
Light_Sensor_Det
Human_Sensor_Det
STBY_LED
POWER_LED
TIMER_LED
PIC_MUTE_LED
REC_LED
Power_KEY
KEY
UARTE
DIMMER
DMD_CLK_ENABLE2
DIMMER_DC
LOGO
DEBUG_LED2
DEBUG_LED3
PANEL_PWR
DMD_CLK_ENABLE1
DMD_RST
X_WIFI_RST
HP_DET
SPDIF_SEL
HDMIEQ_INT
X_AUDIO_MON
D
C
_MO
N
KE
Y
Y
Light_Sensor_Det
Hum
an_Sensor_Det
PANEL
_SEL
BAC
KLIGHT
_MON
PANEL
_PWR
_Det
STBY_LED
TIMER_
LE
D
M
A
IN
_P
W
R
M
A
IN
_SS
_MO
N
N
SYSTEM2
_P
W
R
SYSTEM1
_P
W
R
PI
C
_MUT
E_L
E_L
ED
AC
_M
O
N
PFC_MON
POW
ER
_KE
Y
Y
D
E
BUG_L
ED
1
X
_RF
_R
ST
X_
HOTEL
_P
W
R_
CT
RL
P
OW
ER
ER
_LED
R
EC
_LE
D
X
_SYS
TEM1_
TEM1_
R
ST
PFC_PWR
X
_AUDI
O
_MUTE1
X
_AUDI
O
_MUTE2
BAC
KLIGHT
_O
N
NM
I
I
P
C
_C
ON
_D
_D
E
T
VID
E
O
A
_DE
T
T
VID
E
O
B
_D
E
T
C
R
_D
E
T
LUT_S
EL2
LUT_S
EL1
LUT_S
EL0
B
IN
T
TC
O
N_RDY
DAT
A
1
Panelless
SPI
UART
Digital Audio
I2C
Analog Signal
PWM
Analog Audio
Analog Video
Digital Video/TS/TMDS
X_AUDIO_MUTE1
X_AUDIO_MUTE2
X_FAULT
Main Speaker_Out_LR
X_SYSTEM1_RST
AUDIO_MON
OPAMP
Audio
Power AMP
Main Speaker_Out_LR
Atreyu_SPDIF
TV_Out_LR
Tuner_LR
Line Out_LR
PC_LR
COMP2_LR
PC_V
VIDEO1_LR
Tuner_LR
PC_G
PC_B
PC_R
PC_H
PC_H
COMP_Y
COMP_Pb
COMP_Pr
OPAMP
SPDIF
HP/Line Out LR
HP_/ Line Out Det
PC_R,PC_G,PC_B,PC_H,PC_V
PC_LR
PC_5V, PC_DDC
PC_CON_Det
COMP_Y, Pb, Pr
VideoB_Det
VideoB_Det
Cr_Det
COMP2_LR
VideoA_Det
VIDEO_CV
VIDEO1_LR
CEC3
DDC4
HPD4
CEC4
DDC_5V_4
TMDS4
CEC2
DDC3
HPD3
DDC_5V_3
TMDS3
TMDS1
DDC1
HPD1
CEC1
TMDS2
TMDS2
DDC2
HPD2
DDC_5V_1
DDC_5V_2
ARC
3.3->1
EQ SW
I2CA
XReality
TS
X’tal
IF1
TMDS
DDC
CEC
VIDEO_CV
COMP_Y
REG_12V
DIMMER
FIGURE 3-4. ENGINEERING BLOCK DIAGRAM
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