Sony KDL-40HX752 Installation guide

SERVICE / TRAINING MANUAL
LCD Digital Color TV
AZ3G Chassis
Segment: 3a
9-883-877-01
Self Diagnosis
Supported model
Version Date Subject
1.0 5/21/2012 Original Manual Release Date
ORIGINAL MANUAL ISSUE DATE: 5/2012
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE / TRAINING MANUAL
LCD Digital Color TV
AZ3G Chassis
Segment: 3a
9-883-877-01
Self Diagnosis
Supported model
KDL-40HX752

MODEL LIST
MODEL COMMANDER DESTINATION MODEL COMMANDER DESTINATION
9-883-877-01
KDL-40HX752 RM-YD078 ARGENTINA KDL-46HX752 RM-YD078 ARGENTINA

KDL-40HX752/46HX752 i
TABLE OF CONTENTS
Cautions and Warnings..................................................................................iii
Section 1 - Features and Overview ................................................................1
Features ........................................................................................................1
Specications ................................................................................................1
Checking the Accessories.........................................................................2
Chassis Overview..........................................................................................3
Overall Circuit Description.............................................................................4
Main Board ...............................................................................................4
Power Supply Board .................................................................................4
IR Board....................................................................................................4
3D IR Emitter Board..................................................................................5
Switch Unit................................................................................................5
LCD Panel Assembly................................................................................5
Section 2 - Troubleshooting ...........................................................................6
Overview .......................................................................................................6
Updating the Software ..............................................................................6
Self Diagnosis Function.................................................................................6
Standby LED Blink Count .........................................................................6
Viewing the Self Check Diagnosis History................................................7
Triage Chart...................................................................................................9
Section 3 - Flow Charts and Diagrams ........................................................10
Block Diagram .............................................................................................10
No Power ................................................................................................ 11
Standby LED Blinking .............................................................................13
No Picture ...............................................................................................14
No 3D Viewing ........................................................................................16
Section 4 - Disassembly/Part Number Information ....................................17
Table-Top Stand Removal ...........................................................................17
Rear Cover Removal...................................................................................18
Handling the LVDS FFC Connector.............................................................19
Disconnecting the LVDS FFC Connector ...............................................19
Connecting the LVDS FFC Connector....................................................19
Main Board (BAPS) and Power Supply Board (GL6) Removal...................20
Panel Brackets and LCD Panel Removal....................................................21
Connectors ..................................................................................................22
Screws.........................................................................................................22
Accessories and Packaging ........................................................................23
Miscellaneous..............................................................................................23
Optional Accessories...................................................................................23
Wire Dressing..............................................................................................24
Section 5 - Updates and Adjustments .........................................................25
Overview .....................................................................................................25
Software Updates for Customers ................................................................25
Software Updates for Servicers...................................................................25
Software Update Responsibility..............................................................26
Checking the Software Version...............................................................26
Completing Service Requirements
When Replacing the Main Board.................................................................26
Updating the Software ............................................................................26
Selecting the Segment Code ..................................................................27
Selecting the Destination ........................................................................29
Selecting the Model Name......................................................................29
Adding the Serial Number.......................................................................30
Conrming the Model ID and Product ID ................................................32
Clearing the Self Diagnosis Self Check Information ...............................33

KDL-40HX752/46HX752 ii
TABLE OF CONTENTS
Resolving an 8 Blink Error...........................................................................34
Verifying there is an 8x error...................................................................35
Resetting the TV to Factory Condition....................................................35
Updating the Software ............................................................................35
Replacing the Main Board ......................................................................35
Completing Service Requirements When
Replacing the LCD Panel or TCON Board .................................................36
Updating the Software ............................................................................36
Conrming the Model ID and Product ID ................................................36
Resetting the Panel Operation Time.......................................................37
Clearing the Self Diagnosis Self Check Information ...............................38
Optional Adjustments ..................................................................................39
Enabling VCOM to Adjust the Picture.....................................................39
Setting White Balance Adjustments........................................................40
Resetting the TV to Factory Condition.........................................................40
Resetting the TV to Factory Condition Using Service Mode...................40
Appendix A: Encryption Key Components ............................................... A-1

KDL-40HX752/46HX752 iii
CAUTION
These servicing instructions are for use by qualied service personnel only.
To reduce the risk of electric shock, do not perform any servicing other than
that contained in the operating instructions unless you are qualied to do so.
WARNING!!
An isolation transformer should be used during any service to avoid possible
shock hazard, in case of live chassis.
!
SAFETY-RELATED COMPONENT WARNING!!
There are critical components used in LCD color TVs that are important for
safety. These components are identied with shading and
!
mark on the
schematic diagrams and the parts list. It is essential that these critical parts
be replaced only with the part number specied in the parts list to prevent
electric shock, re, or other hazard.
NOTE: Do not modify the original design without obtaining written permission
from the manufacturer or you will void the original parts and labor warranty.
CAUTIONS AND WARNINGS

KDL-40HX752/46HX752 iv
CAUTIONS AND WARNINGS
SETTING UP AND CARRYING THE TV
●Disconnect all cables when carrying the TV.
●Carry the TV with the adequate number of people; larger size TVs require two or more people.
●Correct hand placement while carrying the TV is very important for safety and to avoid damage.
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When installing the LCD panel on a wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
1. Do not press on the panel or frame edge to avoid the risk of electric shock.
2. Do not scratch or press on the panel with any sharp objects.
3. Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4. Do not expose the LCD panel to direct sunlight.
5. Avoid contact with water. It may cause a short circuit within the module.
6. Disconnect the AC power when replacing the backlight or inverter circuit.
(High voltage occurs at the inverter circuit at 650Vrms.)
7. Always clean the LCD panel with a soft cloth material.
8. Use care when handling the wires or connectors of the inverter
circuit. Damaging the wires may cause a short.
9. Protect the panel from ESD to avoid damaging the electronic
circuit (C-MOS).
10. During the repair, DO NOT leave the Power On for more than
1 hour while the TV is face down on a cloth.

KDL-40HX752/46HX752 v
CAUTIONS AND WARNINGS
CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
Clean the cabinet of the TV with a dry soft cloth.
Wipe the LCD screen gently with a soft cloth.
;Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
;If using a chemically pretreated cloth, please follow the instruction provided on the package.
;Never use strong solvents such as a thinner, alcohol or benzine for cleaning.
;Periodic vacuuming of the ventilation openings is recommended to ensure proper ventilation.
;Do Not use paper towels, any type of abrasive pad, rags, rubber or vinyl materials to clean the screen. Using these materials could easily scratch the
screen which may result in permanent damage.
;Do Not use any cleaning product containing alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, ammonia, benzine, thinner or
insecticide. Using any of these harsh cleaners may result in permanent damage to the screen.
;Do Not spray water or detergent directly onto the TV screen . If liquid drips into the bottom of the screen it may cause a failure.

KDL-40HX752/46HX752 vi
CAUTIONS AND WARNINGS
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety
checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes
and bridges.
2. Check the interboard wiring to ensure that no wires are pinched” or
touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the antenna terminals, metal trim, metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage
as described in “Leakage Test”.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and from all
exposed metal parts to any exposed metal part having a return to chassis,
must not exceed 0.5 mA (500 microamperes). Leakage current can be
measured by any one of three methods.
1. A commercial leakage tester.
Follow the manufacturers’ instructions provided with the tester.
2. A battery-operated AC milliammeter.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The limit” indication is 0.75 V, so
analog meters must have an accurate low voltage scale. Nearly all
battery-operated digital multimeters that have a 2 VAC range are
suitable. (see Figure A)
To Exposed Metal
Parts on Set
0.15 µF
Earth Ground
AC
Voltmete
r
(0.75V)
Figure A. Use an AC voltmeter to check AC leakage.
HOW TO FIND A GOOD EARTH GROUND
The cover-plate retaining screw on most AC outlet boxes is at earth ground.
Verify the AC outlet box retaining screw ground by connecting a 60W to
100W incandescent (not a neon or uorescent lamp) between the hot side of
the receptacle and the retaining screw. Try both slots, if necessary, to locate
the hot side on the line; the lamp should light at normal brilliance if the screw
is at ground potential. (see Figure B)
Figure B. Checking for earth ground.
Trouble Light
AC Outlet Box

KDL-40HX752/46HX752 1
FEATURES
The AZ3G chassis is one of several designs for the 2012 model line of Sony
Bravia® LCD televisions. This manual covers the following models:
KDL-40HX752
KDL-46HX752
The BRAVIA® HX75x series LED LCD HDTV with 3D have incomparable
picture quality and an ultra-thin design
●Brilliant Full HD (1080p) picture quality with Dynamic Edge LED
backlight with Frame Dimming
●X-Reality™ Engine that creates crisp detail in each scene
●4x High Speed 3D Panel with Motionow™ XR 480
●Dynamic Edge LED backlight for amazing contrast & color
●One-touch access to the Sony Entertainment Network™ and apps1
●3D in Full HD 1080p for phenomenal 3D picture quality2
●Stream HD entertainment wirelessly with built-in Wi-Fi®1
●Skype™ ready1
●PC and tablet content3 on your TV w/ Intelligent Connect
●Media Remote™ app to control your TV with a smartphone4
●Built-in Wi-Fi™ (802.11n) enables you to connect to the TV via
Wi-Fi® without using a router3
1. Broadband speed of at least 2.5 Mbps recommended (10 Mbps for HD). Content subject
to change and may require fees. Skype requires CMU-BR100 camera sold sep. Subject to
Skype’s terms and conditions.
2. Requires 3D content, 3D player, HDMI® cable (at least 10.2 Gbps) and 3D active glasses
sold separately.
3. Streaming content, copy-protected content and certain formats are not supported.
4. Requires devices connected to the same wireless home network.
SECTION 1 - FEATURES AND OVERVIEW
SPECIFICATIONS
Sistema
Sistema de TV Análogo: NTSC 3.58 / PAL-M / PAL-N
Digital: SBTVD
Cobertura de canales VHF: 2-13, UHF: 14-69
CATV (Análogo): 1-135
Sistema del panel Panel LCD (pantalla de cristal líquido)
Salida de bocinas 10 W + 10 W
Tomas de entrada/salida
CABLE/ANTENNA
(Cable/Antena) Terminal externa de 75 ohms para entrada de señal de radiofrecuencia
VIDEO IN 1
(Entrada de video 1) Entrada de video/audio (izquierda-derecha)
COMPONENT IN
VIDEO IN 2
(Entrada de video 2)
YP BPR(video componente): 1080p (50, 60 Hz), 1080i (50, 60 Hz),
720p (50, 60 Hz), 576p, 576i, 480p, 480i
Entrada de audio (izquierda-derecha)
Entrada de video (contacto común de componente)
HDMI IN 1/2/3/4
(Entrada HDMI 1/2/3/4)
Video (2D):1080p (30, 50, 60 Hz), 1080/24p, 1080i (50, 60 Hz),
720p (30, 50, 60 Hz), 720/24p, 576p, 576i, 480p, 480i,
Formatos de PC
Video (3D) :
Estructuración de imágenes 1080p (30 Hz), 1080/24p, 1080i (50, 60 Hz),
720p (30, 50, 60 Hz), 720/24p
Una a lado de otra 1080p (50, 60 Hz), 1080/24p, 1080i (50, 60 Hz),
720p (30, 50, 60 Hz)
Una arriba de otra 1080p (30, 50, 60 Hz), 1080/24p, 1080i (50, 60 Hz),
720p (50, 60 Hz)
Audio: PCM lineal de dos canales 32; 44,1 y 48 kHz, 16, 20 y 24 bits,
Dolby Digital
Entrada de audio analógico (minitoma estéreo) (sólo HDMI IN 2, común con
PC IN (entrada de PC)
ARC (sólo HDMI IN 1)
AUDIO OUT
(Salida de audio)/Auriculares Minitoma estéreo
DIGITAL AUDIO OUT
(OPTICAL) Toma óptica digital (PCM lineal de dos canales, Dolby Digital)
PC IN (Entrada de PC)
PC/HDMI 2 AUDIO IN
(Entrada de audio de PC/
HDMI 2)
RGB analógico (Conector D-sub de 15 pines)
Entrada de audio (minitoma estéreo) (común con HDMI IN 2)
LA NConector 10BASE-T/100BASE-TX (La velocidad de la conexión podría variar en
función del entorno de red. No se garantizan la tasa de comunicación ni la
calidad de comunicación 10BASE-T/100BASE-TX para este TV.)
USB/DLNA Consulte el i-Manual para el formato compatible.