Sony Bravia KDL32EX308 Training Manual
Az1l direct-view lcd television chassis
Hide thumbs
Also See for Bravia KDL32EX308:
- Specifications (2 pages) ,
- Setup manual (59 pages) ,
- User manual (7 pages)
Related Manuals for Sony Bravia KDL32EX308
Summary of Contents for Sony Bravia KDL32EX308
- Page 1 Training Manual KDL32EX308 AZ1L Direct-View LCD Television Chassis Circuit Description and Troubleshooting Guide MODELS: KDL22EX308 KDL32EX308 Course : CTV-68...
-
Page 2: Table Of Contents
Table of Contents Chapter 1 – Introduction ............. 1 Power Supply ............... 4 KDL22EX308 ................4 Overview ................1 KDL32EX308 ................4 Features ................1 Inverter ................. 4 720p Panel ................1 Switch Unit ................4 CCFL Backlighting ............... 1 HLR Board ................ - Page 3 Table of Contents (Continued) Introduction ..............24 LCD Panel Basics .............. 24 Gate Drivers ............... 27 Source Drivers ..............27 Diagnosing a Failed TCON ..........27 TCON Failures ..............29 Troubleshooting a “DEAD” TCON ......... 29 Examples of Actual TCON Failures ........31 LCD Panel Failures ............
-
Page 4: Chapter 1 - Introduction
An optional wireless network adapter is available to connect the television The AZ1L chassis is one of several designs for the 2010 model line of Sony to a home network. These models have an Ethernet port on the rear for Bravia®... -
Page 5: Usb2.0 Side Input
Any brand of electronic equipment that is CEC compliant from the local PBS station when the television is off. can communicate with another to generate operational commands. The Bravia Sync feature uses the CEC format to control other Sony devices Digital Living Network Alliance (DLNA) in the system. -
Page 6: Chapter 2 - Overall Circuit Descriptions
Figure 2-1 illustrates an overall block diagram of the KDL22EX308. IC2000 functions as a switch for the 4 HDMI inputs. It also serves as Figure 2-2 illustrates an overall block diagram for the KDL32EX308. Both an equalizer to match the low impedance of the input jacks to the high chassis designs share most of the same circuits with the power supply impedance of the input to IC9000. -
Page 7: Power Supply
6-blink error code displayed by the timer LED. KDL32EX308 Referring to Figure 2-2 the KDL32EX308 utilizes the G2LE power supply board. All of the other circuits are the same as the KDL22EX308 except for the following circuits:... - Page 8 Chapter 2 - Overall Circuit Description TUNER IC4200 AUDIO SW COMPOSITE OR ANALOG COMPONENT 1 AUDIO IN ANALOG AUDIO OUT COMPONENT 2 DIGITAL AUDIO COMPOSITE 3 DIGITAL OPTICAL AUDIO OUT TUNER IN ANALOG VIDEO IN IC5000 HDMI 1 SUB- IC9000 IC2200 MICRO HDMI 2...
- Page 9 Chapter 2 - Overall Circuit Description TUNER IC4200 AUDIO SW COMPOSITE OR ANALOG COMPONENT 1 AUDIO IN ANALOG AUDIO OUT COMPONENT 2 DIGITAL AUDIO COMPOSITE 3 DIGITAL OPTICAL AUDIO OUT TUNER IN ANALOG VIDEO IN IC5000 HDMI 1 SUB- IC9000 MICRO IC2200 HDMI 2...
-
Page 10: Chapter 3 - Troubleshooting
firmware and software in their products. If a customer contacts the Sony Customer Support Center and it is deemed to be • The Main Board (BAL) correctable with a software update, the issue is handled at the customer •... -
Page 11: Software Update Responsibility
Examples of Software Correctable Symptoms Always check the Sony Technical Support site for any known and listed issues that are software related. Most symptoms that are correctable by software updates involve communications issues with other devices or minor glitches in the operation of a specific function. -
Page 12: Special Software Instructions For Bal Board Or Lcd Panel Replacement
Data (model ID) and Destination (region ID). The procedures for the software installation are located on the ASC website (http://www.sony. com/asp). The adjustment procedures are located in the service manual. This new method of supplying main boards significantly reduces the complexity of replacing LCD panels and main boards. -
Page 13: No Video
Chapter 3 - Troubleshooting Video Failures Service Tip: If a service call is made for a “no video” complaint, a warranty repair would require the technician to bring a BAL board to the location. Problems that develop in the video circuits can appear as subtle or The technician will install the board (hopefully the correct one) and if the major distortions, a loss of one or more colors, improper video level, or video problem is not remedied, it is safe to assume the problem might... - Page 14 Chapter 3 - Troubleshooting Video Distortion No Video This is, perhaps, the more difficult failure to diagnose. It is difficult when talking to the customer on the phone because an accurate description of the problem must be obtained in order to determine which part (or parts) to bring to the location.
- Page 15 A past article written for the Sony Newsletter describes, in detail, how this process works. A copy of the article is included in the appendix section of this training manual.
- Page 16 Chapter 3 - Troubleshooting Video Distortion Lines move Is distortion Improper of Vertical lines when wide- across entire BAL Board missing colors? or bars ? mode screen? changed ? TCON BAL Board (LCD Panel ) TCON (LCD Panel ) Any horizontal LCD Panel lines ? Any single or...
-
Page 17: Audio Troubleshooting
LED located on the lower left front bezel that is lit whenever the unit is receiving AC power and is turned off. The KDL32EX308 model incorporates an “eco” switch located on the lower right side which removes all AC power from the unit and produces the same symptom of a unit that has been unplugged or lost its AC power. - Page 18 Chapter 3 - Troubleshooting No Power Press power Does red standby button while GE3 board (32, 40") High (3.3V) LED on front panel monitoring pin 3 of GE2B board (46/52") on pin 3? light? GE2A (60") CN6150 on power supply board Is standby LED See protection BAL Board...
- Page 19 Chapter 3 - Troubleshooting Protection Shutdown 6X: If the inverter circuits fail to generate high voltage or one or more of the backlight lamps fails to light, the television will shut down and display Critical voltages and circuit operations are monitored by the CPU on the this diagnostics error.
- Page 20 G2LE board (32") BAL Board Check room After a While temperature and ventilation around unit Immediately BAL Board “SONY” logo GD1 board (22") appears before LCD Panel G2LE board (32") shutdown? LCD Panel FIGURE 3-5 PROTECT SHUTDOWN TROUBLESHOOTING FLOWCHART CTV-68...
-
Page 21: Backlight Issues
Chapter 3 - Troubleshooting Backlight Issues This feature is useful for failures which are intermittent or when the customer is not sure what is causing the television to shut down sometimes. Once a Under normal circumstances, any failures in the backlighting system will corrective action is determined the error events should be cleared to zero. -
Page 22: Circuit Board And Connector Locations
Circuit Board and Connector Locations Figure 3-9 illustrates the rear of a KDL22EX308 with the cover removed. The location of the major circuit boards and connectors for voltage checks is provided. An illustration of the KDL32EX308 is shown in Figure 3-10 CTV-68... - Page 23 Chapter 3 - Troubleshooting CN6701 CN6702 CN6001 AC IN (N) CCFL HV TO CN6703 AC IN (H) BALANCER CN6704 CN3800 STBY3.3V CN6150 AUDIO_12V STBY3.3V AUDIO_GND 4, 5 AC_OFF_DET REG12V_GND 6, 7 POWER_ON REG12V AUDIO_12V TCON_12V AUDIO_GND 6, 7 REG12V_GND CN2561 8, 9 REG12V AC_OFF_DET...
- Page 24 STBY3.3V AUDIO_12V AC_OFF_DET AUDIO_GND REG12V_GND 4, 5 POWER_ON 6, 7 REG12V AUDIO_12V AUDIO_GND TCON_12V 6, 7 REG12V_GND 8, 9 REG12V CN2561 BL_ERR AC_OFF_DET BL_ON POWER_ON DIMMER BL_ERR BL_ON TCON_12V DIMMER TCON_ON HSYNC TCON_ON G2LE FIGURE 3-8 KDL32EX308 TEST POINTS CTV-68...
- Page 25 Chapter 3 - Troubleshooting SWITCH BLOCK FIGURE 3-9 KDL22EX308 BOARD LOCATIONS CTV-68...
- Page 26 Chapter 3 - Troubleshooting GD2LE SWITCH BLOCK FIGURE 3-10 KDL32BX300 BOARD LOCATIONS CTV-68...
-
Page 27: Chapter 4 - Appendix
This will mainly be determined by availability of components replacement of the entire LCD panel was mandatory. This is not only from the LCD panel vendor along with decisions by Sony based on sales costly from a warranty standpoint but it also makes it near impossible to quantity and failure history of the TCON assemblies. - Page 28 Timing Control. Other LCD panel manufacturers may have a different of the ATSC specifications so the video will exit as 720p. name for this particular circuit but the term used by Sony will always be The LCD panel used in this model processes 8-bit RGB video data. Before TCON.
- Page 29 Chapter 4 - Appendix LVDS LVDS TRANSMITTER RECEIVER VIDEO TIMING PROCESS CONTROL TCON SOURCE DRIVERS GATE DRIVERS LCD PANEL FIGURE 4-1 TYPICAL LCD TIMING CONTROL CTV-68...
-
Page 30: Gate Drivers
Chapter 4 - Appendix Gate Drivers A good approach when determining a TCON failure is a good understanding of which symptoms ARE NOT caused by the TCON. Examples are as Referring to Figure 4-1, note the IC’s located along the side of the panel. follows: These IC’s are mounted on a flexible cable(s) which are bonded to the Video Process Failures: All video inputs received by the video process... -
Page 31: Typical Lcd Panel Failures
Chapter 4 - Appendix DEFECTIVE DRIVE IC DEFECTIVE TAB BOND OR DRIVE IC DEFECTIVE TAB BOND OR DRIVE IC FIGURE 4-2 TYPICAL LCD PANEL FAILURES CTV-68... -
Page 32: Tcon Failures
It can also contain video information with distortion. A single vertical line that is dark or Many of the Sony television models over the last few years will detect colored. This may be due to a tab bonding failure from the IC to a TCON that has completely failed. -
Page 33: Lcd Timing Control Failures
Chapter 4 - Appendix Figure 4-3 illustrates 2 examples of a loss of control data to the drive IC’s. In the first example, an entire group of column drivers has lost the data stream for red. The second example involves the complete loss of drive data for all RGB information to the right side of the screen. -
Page 34: Examples Of Actual Tcon Failures
Chapter 4 - Appendix Examples of Actual TCON Failures The remaining illustrations show other TCON failures that have been encountered in the field. The idea is to get a grasp of the concept of TCON induced failures to avoid unnecessary parts replacement. MULTIPLE SOURCE DRIVE IC FAILURE REPETATIVE STAIONARY LINES MULTI-COLORED LINES. - Page 35 Chapter 4 - Appendix MULTIPLE EVENLY SPACED LINES NOT AFFECTED BY SYMETRICAL RED BOXES PICTURE ZOOMING LOADED SOURCE DRIVE DATA LINE CTV-68...
-
Page 36: Lcd Panel Failures
Chapter 4 - Appendix LCD Panel Failures Below are some photos of actual LCD panel failures. Note that most issues tend to be isolated to a certain area of the screen with the exception of failures of the source drivers. The source drivers can cause thin horizontal line issues and can also affect a large area of the screen. - Page 37 Chapter 4 - Appendix SOURCE TAB BOND FAILURE GATE TAB BOND FAILURE MULTIPLE PIXEL FAILURE GATE TAB BOND FAILURE CTV-68...
- Page 38 Sony Electronics 2007 Sony Electornics, Inc. SEL Service Company 16530 Vill Esprillo National Training Dept. MZ3215 CTV68030810 3/10/10 San Diego, CA 92127 Reproduction in whole or part without written permission is prohibited. All rights reserved...