Sony KDL-40NX725 Service Manual
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Sony KDL-40NX725 Service Manual

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HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

AZ2-F
Chassis
Segment: 3a-1
ORIGINAL MANUAL ISSUE DATE: 2/2011
Version Date
Subject
1.0
3/1/2011
No revisions or updates are applicable at this time.
LCD Digital Color TV
9-888-410-01

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Summary of Contents for Sony KDL-40NX725

  • Page 1: Service Manual

    HISTORY INFORMATION FOR THE FOLLOWING MANUAL: SERVICE MANUAL AZ2-F Chassis Segment: 3a-1 ORIGINAL MANUAL ISSUE DATE: 2/2011 Version Date Subject 3/1/2011 No revisions or updates are applicable at this time. LCD Digital Color TV 9-888-410-01...
  • Page 2 Self Diagnosis Supported model SERVICE MANUAL AZ2-F Chassis Segment: 3a-1 LCD Digital Color TV KDL-46NX725 9-888-410-01...
  • Page 3 MODEL LIST MODEL COMMANDER DESTINATION MODEL COMMANDER DESTINATION KDL-40NX725 KDL-46NX725 RM-YD062 CHILE/PERU RM-YD062 CHILE/PERU KDL-40NX725 RM-YD062 VENEZUELA KDL-46NX725 RM-YD062 VENEZUELA 9-888-410-01...

  • Page 4: Table Of Contents

    Wireless LAN Board ..............21 Energy Saving Switch ............... 10 Switch Unit ................21 USB Photos, Videos & Music ............ 10 USB Camera ................21 LightSensor™ Technology ............11 IR Board ...................22 BRAVIA® Sync™ Compatible ............11 LCD Panel Assembly ...............22 Specifications ................12 TCON Board ................22 KDL-40NX725/46NX725...
  • Page 5 TABLE OF CONTENTS Diagrams ..................23 Screws ..................48 Block Diagram ................23 Connectors ................48 Connector Diagrams ..............25 KDL-40NX725 Only ..............48 KDL-46NX725 Only ..............48 Section 4 - Troubleshooting .............29 Accessories and Packaging .............49 Overview ..................29 Miscellaneous ................49 Updating the Software ............... 29 Remote Commander ..............49...
  • Page 6 TABLE OF CONTENTS Appendix A - Removing the Rear Cover ....... A-1 Removing the Power Cord from the Rear Cover ....A-1 Appendix B - Attaching the Rear Cover ........ B-1 KDL-40NX725 Only ............... B-1 KDL-46NX725 Only ............... B-2 KDL-40NX725/46NX725...

  • Page 7: Section 1 - Safety And Features

    Components identified by shading and ! mark on the exploded views are critical for safe operation. Replace all components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. It is essential that all critical parts be replaced only with the part number specified in this manual to prevent electric shock, fire, or other hazard.
  • Page 8 R If using a chemically pretreated cloth, please follow the instruction provided on the package. R Never use strong solvents such as a thinner, alcohol or benzine for cleaning. R Periodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation. KDL-40NX725/46NX725...

  • Page 9: Handling The Ffc Connector

    If it is inserted upside down, the pins on the FFC connector Use caution when you connecting or removing the FFC connector. will short-circuit and damage the board. Remove the connector by the reinforcement tab only. Reinforcement tab shows Terminal side shows Inserted Correctly Inserted Incorrectly Correct Incorrect KDL-40NX725/46NX725...

  • Page 10: Special Handling Instructions When Replacing The Lcd Panel Assembly

    2. Lift the LCD Panel Assembly by holding the top and bottom of the panel approximately 200mm from the edge with your palms on the back of the panel. (Figure 2) CAUTION: Lifting or holding the panel at the corners may damage the panel. 3. Use the same method when taking the replacement panel out of the carton. (Figure 3) Figure 1 Figure 2 Figure 3 CAUTION: DO NOT lift the LCD Panel by holding the short side of the panel or by placing your palms on the front glass. (Figures 4 & 5) Figure 4 Figure 5 KDL-40NX725/46NX725...

  • Page 11: Safety-Related Warnings

    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-40NX725/46NX725...

  • Page 12: Safety Check-Out

    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 below. KDL-40NX725/46NX725...

  • Page 13: Leakage Test

    Try both Cold-water Pipe 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. KDL-40NX725/46NX725...

  • Page 14: Self Diagnosis Function

    If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur. “Section 4 - Troubleshooting” on page 29. For complete information, refer to KDL-40NX725/46NX725...

  • Page 15: Overview

    The AZ2-F chassis is one of several designs for the 2011 model line Several new features are introduced in this chassis model lineup of Sony Bravia® LCD televisions. This manual covers the following along with some carryovers from the previous year.

  • Page 16: Internet Streaming & Connectivity

    – it’s unlike FASTER START-UP any experience you could get on a PC.2 Quick Start & Viewing feature enables this Sony television to go from Integrated Wi-Fi®:Conveniently stream entertainment straight from ‘OFF’ to ‘ON’ 2-3 times faster than previous Sony televisions.

  • Page 17: Lightsensor™ Technology

    BRAVIA® SYNC™ COMPATIBLE Conveniently operate and control other BRAVIA® Sync™ compatible devices - including BRAVIA® HDTVs, Blu-ray Disc™ Players, surround sound systems, Handycam® camcorders and Cyber-shot® digital still cameras, all with one remote control when connected via HDMI. KDL-40NX725/46NX725...

  • Page 18: Specifications

    (Entrada de audio de PC/HDMI) 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.) e t l para el formato compatible. KDL-40NX725/46NX725...
  • Page 19 Manual de instrucciones (este Soporte para colgar en la pared: SU-WH500 manual) y otros documentos Soporte de TV: SU-B461S (para KDL-46NX725) SU-B401S (para KDL-40NX725) *1 Consulte el número del modelo impreso en el Gafas 3D: TDG-BR250/TDG-BR200/TDG-BR100/TDG-BR50 control remoto. Adaptador USB para LAN inalámbrica...
  • Page 20 Blu-ray Disc es una marca comercial. “BRAVIA” y , S-Force, Motionflow, BRAVIA Sync y son marcas comerciales o marcas registradas de Sony Corporation. “PlayStation” es una marca comercial registrada y “PS3” es una marca comercial de Sony Computer Entertainment Inc. ® ® DLNA , el logotipo de DLNA y DLNA CERTIFIED son marcas comerciales, marcas de servicio o marcas de certificación de Digital Living...

  • Page 21: Section 2 - Software Requirements

    If a customer contacts the Sony Customer Support Center and it is deemed to be correctable with a software update, the issue is handled at the customer level.

  • Page 22: Software Updates For Servicers

    The easiest way to check the version of software that is currently on In addition to software installation, service adjustment information the TV is to access the Contact Sony screen by using the customer may need to be modified or verified to complete the service of the menu.

  • Page 23: Examples Of Software Correctable Symptoms

    Unit turns on and off by itself ● Loss of color ● Internet connectivity ● Certain features not working correctly (photo or video file viewing)Loss of color ● Internet connectivity ● Certain features not working correctly (photo or video file viewing) KDL-40NX725/46NX725...

  • Page 24: Section 3 - Chassis Overview

    “Connectors” on page 48. For Wire Dressing information, refer to “Wire Dressing” on page Wireless LAN Card LD Board BATL Board G4BW Board Switch Unit TCON HEM2 Board Camera Module HLT2 Board FIGURE 3-1. BOARD LAYOUT FOR KDL-40NX725 ONLY KDL-40NX725/46NX725...
  • Page 25 SECTION 3 - CHASSIS OVERVIEW Wireless LAN Card LD Board G5AW Board BATL Board Switch Unit TCON Camera Module HLT2 Board HEM2 Board FIGURE 3-2. BOARD LAYOUT FOR KDL-46NX725 ONLY KDL-40NX725/46NX725...

  • Page 26: Overall Circuit Description

    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. KDL-40NX725/46NX725...

  • Page 27: Power Supply

    USB CAMERA POWER SUPPLY FOR BACKLIGHT SYSTEM A USB camera is located on the front bezel below the Sony logo. Special software is located inside IC9000 to use the camera for Power for the LED backlights is provided for the LD board via the power and picture control management.

  • Page 28: Ir Board

    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. (NOTE: The TCON Board is not available as a replacement part for all models.) KDL-40NX725/46NX725...

  • Page 29: Diagrams

    PROCESS HDMI 4 PC HD15 EITHERNET LVDS USB2.0 USB HUB TCON USB2.0 LCD PANEL CAMERA BATL LED DRIVE IR RX LOGO SWITCH LIGHT SENSE UNIT POWER SUPPLY/ CONVERTER AC IN G4BW (40") G5AW (46") FIGURE 3-3. OVERALL BLOCK DIAGRAM KDL-40NX725/46NX725...
  • Page 30 POWER_LED SPEAKER Assist Speaker_Out_LR STBY_LED X_SYSTEM1_RST [D–510D] TIMER_LED REC_LED PIC_MUTE_LED Audio Main Power AMP Main Speaker_Out_LR [D–510D] SPEAKER X_FAULT AUDIO_MON X_SYSTEM1_RST X_AUDIO_MUTE1 Panelless Digital Video/TS/TMDS Digital Audio UART Analog Video Analog Audio Analog Signal FIGURE 3-4. ENGINEERING BLOCK DIAGRAM KDL-40NX725/46NX725...

  • Page 31: Connector Diagrams

    32"=2.0ch 4pin 0-844-426-01 JST PBVP-04V 32"=2.0ch CN4601 4pin 0-844-173-01 JST SM04B-PBVSS-TB(LF)(SN) SPEAKER Fron t (40"Onl y) SPEAKER ASSIST (40"O nly) Refer to Sheet [ App endix_SP_Connector ] 40"=2.1ch , 32"=2.0c h FIGURE 3-5. KDL-40NX725 CONNECTOR DIAGRAM (1 OF 2) KDL-40NX725/46NX725...
  • Page 32 VLED_GND Energy_Saving_SW AC(N)-IN VLED_GND VLED_GND AC(L)-IN CN6002(40" G4BW /32" G10AW) LD_ERR SFP79-02WLB JAM ES SW 1-822-908-11 GL_CTRL LED_ON Energy_Saving_SW CN1002 0-844-177-01 AC(L)-OUT AC(N)-OUT SM12B-PBVSS-TB(LF)(SN) CN6003(40" G4BW /32" G10AW) SFP79-02WLB JAM 1-822-908-11 FIGURE 3-6. KDL-40NX725 CONNECTOR DIAGRAM (2 OF 2) KDL-40NX725/46NX725...
  • Page 33 BAT-L board T-con Board ( PEL3 ) LD Board CN03 LOGO module To BAT LED FFC 15pin SONY LOGO illumination module Panel_Ctrl2 / TCON_RDY Panel_Ctrl3 / T_TD_HSYNC PANEL FFC CN04 1-820-181-11 Panel_Ctrl4 / X_FRC_RST SLCD : 96pin SHARP : 80pin...
  • Page 34 LED_ON CN6801 1-822-339-11 JST XA 14P AC_IN AC-N AC pigtail AC-L CN6001 SFP79-02WLB JAM 1-822-908-11 Energy_Saving_SW AC(N)-IN AC(L)-IN CN6002 SFP79-02WLB JAM ES SW 1-822-908-11 Energy_Saving_SW AC(L)-OUT AC(N)-OUT CN6003 SFP79-02WLB JAM 1-822-908-11 FIGURE 3-8. KDL-46NX725 CONNECTOR DIAGRAM (2 OF 2) KDL-40NX725/46NX725...

  • Page 35: Section 4 - Troubleshooting

    As mentioned in “Section 2 - Software Requirements” on page 15 there are several issues that may be resolved by updating the software to the latest version. For a list of possible correctable issues see “Checking the Software Version” on page KDL-40NX725/46NX725...

  • Page 36: Triage Chart

    * Immediate Shutdown After Power ON & 7X REFERENCE LIBRARY DATABASE FOR CORRECT 4X* Momentary Backlight before Shut OFF REPLACEMENT PARTS BASED ON SERIAL NUMBER. ▲* Sharp Vertical or Horizontal Lines, Missing Pixels 4X** No Backlight before Shut OFF KDL-40NX725/46NX725...

  • Page 37: Protection Shutdown

    “Figure 4-3. Diagnostic Table” on page 34 provides guidance in locating the possible component causing the shutdown. 2 times 5 times LED ON 0.3 sec. LED OFF LED OFF 0.3 sec. 3 sec. FIGURE 4-2. BLINK COUNT KDL-40NX725/46NX725...
  • Page 38 Main Board. If the TCON is available for replacement, replace the TCON. If the TCON is not available, the LCD panel must be replaced since the TCON circuit is part of the LCD panel assembly. In rare cases a loose or defective LVDS cable could also be the cause. KDL-40NX725/46NX725...
  • Page 39 & rear, and 11 inches of clearance over the top to ensure adequate ventilation. ● Check that all vented areas on the TV are clear of all dust and debris. ● If the TV shuts off immediately after Power-On, replacement of the main board is recommended. KDL-40NX725/46NX725...

  • Page 40: Diagnostic Code Descriptions

    The Diagnostic Table provides an overview of the number of times the standby LED blinks and the possible location. To access the Triage documents for the models listed in this manual, login into the Sony Authorized Servicer Portal at http://www.sony.com/asp.

  • Page 41: Viewing The Self Check Diagnostic History

    12345-00333-06789 12345-00333-06789 Panel operation time by hour (MAX:65535) Panel operation time by hour (MAX:65535) Boot count (MAX:65535) Boot count (MAX:65535) Total operation time by hour (MAX:65535) Total operation time by hour (MAX:65535) FIGURE 4-4. SAMPLE SELF CHECK DIAGNOSIS PAGE KDL-40NX725/46NX725...

  • Page 42: Section 5 - Flow Charts And Diagrams

    SECTION 5 - FLOW CHARTS AND DIAGRAMS OVERVIEW The following flow charts provide information to determine what repair parts to order based on the TV error. KDL-40NX725/46NX725...

  • Page 43: No Power

    BL_ERR AUDIO_GND 8, 9 AC_OFF_DET AUDIO_12V TCON_ON STBY3.3V STBY3.3V 11, 13 AU_12V CN6002 12, 14 AU_GND TCON_ON 16, 18 REG_12V BL_ERR 20, 22 REG_12V POWER_ON 24, 26 TCON_12V AC_OFF_DET G4BW (40") G51W (46") BATL FIGURE 5-1. POWER SUPPLY DIAGRAM KDL-40NX725/46NX725...
  • Page 44 Is standby LED See protection G5AW Board (46") on power supply? blinking? flowchart Is energy BATL Board Saving switch on Turn switch on side of unit turned off? G4BW Board (40") G5AW Board (46") ENERGY SAVING SWITCH FIGURE 5-2. NO POWER KDL-40NX725/46NX725...

  • Page 45: Standby Led Blinking

    STANDBY LED BLINKING Protect Shutdown. Standby LED Blinking G4BW Board (40") G5AW Board (46") BATL Board After a while Check ventilation Imediately TCON G4BW Board (40") BATL Board LCD Panel LCD Panel G5AW Board (46") FIGURE 5-3. 2 PROTECTION SHUTDOWN FLOWCHART KDL-40NX725/46NX725...

  • Page 46: No Picture

    SECTION 5 - FLOW CHARTS AND DIAGRAMS NO PICTURE No Video Backlights TCON turned on? (LCD Panel) Sony logo BATL Board appears momentarily? Unplug LVDS Test patterns connector with TCON display on (LCD Panel) unit off. Turn unit screen? back on BATL Board FIGURE 5-4.
  • Page 47 BATL Board when wide-mode missing colors? or bars? screen? changed? TCON BATL Board (LCD Panel) Any horizontal LCD Panel lines? Any single or isolated vertical LCD Panel lines? More than 1 TCON vertical band? (LCD Panel) FIGURE 5-5. VIDEO DISTORTION KDL-40NX725/46NX725...

  • Page 48: Section 6 - Disassembly/Part Number Information

    SCREW, +PSW M5X16 4-259-183-02 NECK (L9) (SCREWS TO ATTACH TABLE-TOP STAND TO LCD TV) (KDL-46NX725 ONLY) For product protection and safety reasons, Sony strongly recommends 4-267-544-01 STAND, BASE (ML1) that you use the screws provided with the TV (KDL-40NX725 ONLY)

  • Page 49: Rear Cover And Ac Cover Removal

    B Remove 6 screws from Rear Cover C Remove 1 screw from Side Jack position D Remove screws from Terminal Area position 1 from KDL-40NX725 Only 2 from KDL-46NX725Only E Remove 2 screws from Rear Cover F Remove 1 screw and release clips from AC Cover to detach from Rear Cover (Refer to “Removing the Power Cord from the Rear Cover”...

  • Page 50: Switch Unit, Hem2 Board, Camera Module, And Wireless Lan Card Removal

    SPEAKER BOX ASSEMBLY (2X9CM) 1-754-746-11 ANTENNA ! 104 1-838-797-11 POWER-SUPPLY CORD (WITH CONN.) 1-754-750-11 ANTENNA (FOR VENEZUELA MODELS) ! 104 1-838-268-11 POWER-SUPPLY CORD (WITH CONN.) 2-990-421-41 SCREW, (+PSW) (M3X6) (FOR CHILE/PERU MODELS) 4-258-272-01 SCREW, +PWH M3X8 A-1792-512-A HEM2 BOARD, MOUNTED KDL-40NX725/46NX725...

  • Page 51: G4Bw/G5Aw (Power Supply) Board And Ld Board Removal

    Remove the LD Board from the original LCD Panel to use on the replacement LCD Panel. A Remove 2 screws and lift-up LD Shield to detach from LCD Panel (KDL-40NX725 Only) B Disconnect 4 connectors and lift-up LD Board to detach from LCD Panel (KDL-40NX725 Only)

  • Page 52: Batl (Main) Board Removal

    AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL, YOU 4-256-431-11 SHEET (BAT-L METAL SIDE) MUST UPDATE THE SOFTWARE TO THE LATEST VERSION. ORDER THIS PART WHEN REPLACING THE LCD PANEL 4-265-819-11 BRACKET BOTTOM (BAT-L METAL) 4-265-817-01 BRACKET SIDE (BAT-L METAL) 2-990-421-41 SCREW, (+PSW) (M3X6) KDL-40NX725/46NX725...

  • Page 53: Center Cabinet, Hlt2 Board And Lcd Panel Removal

    HLT2 Board when removing from the LCD Panel. A Remove screws from Center Cabinet to detach from LCD Panel 3 from KDL-40NX725 Only 7 from KDL-46NX725 Only B Carefully lift-up HLT2 Board to detach from LCD Panel PWB (H)

  • Page 54: Screws

    See Appendix A: Encryption Key Components in the back of this manual. KDL-40NX725 CONNECTORS DESCRIPTION REMARKS TOTAL ▲ 2-580-608-01 SCREW, +PSW M5X16 TABLE-TOP STAND(3) KDL-40NX725 ONLY △ 4-256-393-01 SCREW, +PSW M3X6 W12 AC COVER(1), WOOFER(3), CNTR CBNT(3) □ 2-580-639-01 SCREW, +BVTP 4X12 TYPE2 IT-3 RC(4) ◆ 4-257-907-01 JOINT, STAND RC(2) ◇...

  • Page 55: Accessories And Packaging

    SCREW, +PSW M5X16 (SCREWS TO ATTACH TABLE-TOP STAND TO LCD TV) For product protection and safety reasons, Sony strongly recommends that you use the screws provided with the TV CAUTION: These screws cannot be used to secure the TV to...

  • Page 56: Wire Dressing

    SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION WIRE DRESSING KDL-40NX725 ONLY KDL-46NX725 ONLY FIGURE 6-2. KDL-46NX725 OVERALL WIRE DRESSING FIGURE 6-1. KDL-40NX725 OVERALL WIRE DRESSING KDL-40NX725/46NX725...

  • Page 57: Section 7 - Service Adjustments

    After replacing the Main Board, LCD Panel, or TCON Board, you MUST UPDATE the SOFTWARE to the latest version. Instructions for updating the software are included with the software package on the Sony Authorized Servicer Portal at http://www.sony.com/asp DISPLAY website.

  • Page 58: Viewing Or Changing Service Data

    Data Value or to decrease the Data Value. 7. Press MUTING then press to WRITE (Save) the changes. Figure 7-5. Sample Chassis Service Menu HOME 8. To exit service mode, press or turn the TV power off. KDL-40NX725/46NX725...

  • Page 59: Verifying Service Adjustments

    001 DEST item. DIGITAL SERVICE 001 OP DIGITAL SERVICE 000 VERS 002 MODEL <MAIN> <EXT> 001 DEST LTN/ATSC DM1.301W00AA RF:01.05 WF1.003W00AA WF:2.0.0.99 DF1.001W00AA WF:0B YM1.010W00AA CAN:X.XXX DB2.105W00AA FDlXXXX (DM1.301W00A) DD1.016W00AA WP0.521W00AA <PEM> MID:1C117081 PM1.012W00LU PID:0402000 PB1.000W00LU PNL:LTK400HF0201 PL1.011J46LUX PD1.011J46LUX POP:X.XXX KDL-40NX725/46NX725...

  • Page 60: Verifying The Model Name

    TV. OPTIONAL ADJUSTMENTS DESTINATION DATA VALUE All Sony TVs are set for optimal viewing performance. Refer to the CHILE/PERU LTN/ATSC following instructions if the customer requests additional adjustments. VENEZULA LTN/ATSC...
  • Page 61 8. Repeat steps 6 and 7 for each of the following items: 002 B_DRV 003 R_BKG 004 G_BKG 005 B_BKG 9. To save the changes, press MUTING then press HOME 10. To exit service mode, press or turn the TV power off. KDL-40NX725/46NX725...

  • Page 62: Resetting The Tv To Factory Condition

    LED display as shown below: TIMER TIMER Standby Standby POWER POWER 7. Cycle AC Power (Unplug and Plug AC Cord from the AC Outlet). The set restarts and displays the Initial Setup screen. This may take several minutes. KDL-40NX725/46NX725...
  • Page 63 Sony Electronics Reproduction in whole or part without written permission is prohibited. All rights reserved Sony Corporation English 2011CJ74WEB-1 Sony Technology Center Printed in USA Technical Services 9-888-410-01 © 2011.3 Service Publication Department KDL-40NX725/46NX725...

  • Page 64: Appendix A - Removing The Rear Cover

    AC Cover. 2. Lift up Rear Cover with AC Cover and AC Power Cord attached. NOTE: Hold AC Power Cord while lifting up Rear Cover. Do not pull the AC Power Cord or damage the connector on the Power Board. KDL-40NX725/46NX725...

  • Page 65: Appendix B - Attaching The Rear Cover

    Areas with yellow have sharp edges. Use caution with these areas. Areas with red have sharp edges and are reinforced .Use caution with these areas to avoid damaging the Rear Cover. FIGURE APPENDIX B -1. KDL-40NX725 REAR COVER CAUTION POINTS KDL-40NX725/46NX725...

  • Page 66: Kdl-46Nx725 Only

    Areas with yellow have sharp edges. Use caution with these areas. Areas with red have sharp edges and are reinforced .Use caution with these areas to avoid damaging the Rear Cover. FIGURE APPENDIX B -2. KDL-46NX725 REAR COVER CAUTION POINTS KDL-40NX725/46NX725...

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