Sony KDL70XBR7 Training Manual
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Also See for KDL70XBR7:
- Specifications (3 pages) ,
- Operating instructions manual (63 pages) ,
- Quick setup manual (2 pages)
Related Manuals for Sony KDL70XBR7
Summary of Contents for Sony KDL70XBR7
- Page 1 Training Manual KDL70XBR7 EZ-1 Chassis Special Edition Troubleshooting Circuit Description and Troubleshooting Guide MODEL: KDL70XBR7 Course : CTV-53...
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Page 2: Table Of Contents
Table of Contents Chapter 1 – Brief Circuit Descriptions ....... 1 Basic Tips ................15 Introduction ..............1 Chapter 5 – Appendix ............17 Overall Block Diagram ............. 1 CF1 Board Removal ............17 CF1 Board ................1 Fan Error Troubleshooting ..........18 Power Supply ............... -
Page 3: Chapter 1 - Brief Circuit Descriptions
DC voltage known as PRI_VCC. This voltage is what turns on The KDL70XBR7 utilizes the EZ-1 chassis as its platform. This stand- the G9 boards so they will not function if there is a failure of the G8 board. - Page 4 RIGHT INVERTER TUNER PC 15-PIN A/V INPUT SWITCH AUDIO PROCESS AUDIO AMP TV MICRO COOLING FANS POWER POWER SUPPLY SUPPLY POWER SONY SUPPLY LOGO AC IN AC FILTER POWER LEDS SIRCS TOUCH SENSOR SENSOR FIGURE 1-1 OVERALL BLOCK DIAGRAM CTV-53...
- Page 5 Chapter 1 - Brief Circuit Desriptions TCON NOTE: UNIT MAY NOT HAVE FAN BEHIND SHEILD INSTALLED ON THE LEFT SIDE LEFT INVERTER RIGHT INVERTER BALANCER BALANCER BALANCER BALANCER FIGURE 1-2 CIRCUIT BOARD LOCATIONS CTV-53...
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Page 6: Chapter 2 - Video Circuit Troubleshooting
Chapter 2 – Video Circuit Troubleshooting Brief Description The video process circuits used in the KDL70XBR7 are essentially the same as those used in all of the models incorporating the EZ-1 chassis. A more detailed description of these circuits can be found in the CTV50 training manual. - Page 7 Chapter 2 - Video Circuit Troubleshooting DMEx/SERVICE USB 2.0 EHTERNET IC4800 ATSC/NTSC IC7000 AMD X245 TUNER V3.0 NTSC VIDEO 1 MAIN VIDEO 2 DIGITAL IC5100 VIDEO 3 LVDS VIDEO LVDS 1080 p ANALOG PROCESS 1080 p 120HZ IC1602 (EPP) 60HZ COMPONENT 1 VIDEO HIGH FRAME...
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Page 8: Complete Loss Of Video
Chapter 2 - Video Circuit Troubleshooting Troubleshooting replacement of the FBU board is necessary. If the TCON fails completely the usual result is a loss of communication The circuits for processing the video signals are located on 3 circuit boards. between the TCON and the FBU board and the unit will shut down with The AU board is responsible for selecting the various analog inputs. -
Page 9: Cf1 Board
Chapter 2 - Video Circuit Troubleshooting CF1 Board The microprocessor responsible for doubling the frame rate flashes a green LED if it is functioning properly. Referring to Figure 2-3, the shield of the CF1 board has been removed in order to clarify the location of the heartbeat LED. - Page 10 Chapter 2 - Video Circuit Troubleshooting Distortion All inputs? FBU Board stationary ? Video Failure Analog Only No video or Symentrical ? LCD Panel Distorted AU Board distorted video? No Video Lines are If unit is not shutting Multi-colored Backlights single or multi - FBU Board down with 6X error...
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Page 11: Chapter 3 - Power Supply Troubleshooting
Chapter 3 – Power Supply Troubleshooting Brief Description Troubleshooting As can be seen in Figure 3-1, four circuit boards are involved to generate Power supply failures can appear in 2 distinct symptoms. Since the the main power for this model. The F2 board provides the main AC input regulated 12V source from the G8 board is monitored by the FBU board, fusing along with AC line filtering and transient protection. - Page 12 Chapter 3 - Power Supply Troubleshooting F6000 CN6001 CN6500 CN6800 MAIN 8 AMP RY6500 AC OUT AC IN SWITCHING RELAY CN6000 AC OUT AC IN 6~10 SUPPLY TO LEFT AC IN INVERTER CN6002 CN6802 AC IN AC OUT AC OUT 6~10 F6001 10 AMP...
- Page 13 Chapter 3 - Power Supply Troubleshooting Unit Does Not Turn On Disconnect AC power for at least 30 seconds. Re-apply CN402-9 on G8 AC power Standby LED Board goes high G8 Board blinking 2X? when power button pressed? Any Relay clicks heard? G8 Board FBU Board...
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Page 14: Chapter 4 - Inverter And Backlight Troubleshooting
Chapter 4 – Inverter and Backlight Troubleshooting Brief Description The 4 balancer boards located along the bottom of the panel are responsible for distributing the high voltage to the lamps. The balancer Referring to Figure 4-1 an overall block diagram of the circuits necessary boards are also responsible for equalizing the current draw by each lamp to drive the fluorescent backlights is shown. - Page 15 Chapter 4 - Inverter and Backlight Troubleshooting TO CCFL BACKLIGHTS (X16) TO CCFL BACKLIGHTS (X16) TO CCFL BACKLIGHTS (X16) TO CCFL BACKLIGHTS (X16) LL BALANCER LC BALANCER RC BALANCER RR BALANCER CN103 1, 2 – LD (NORM 12V) HIGH HIGH HIGH HIGH 3, 4 –...
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Page 16: Troubleshooting
Chapter 4 - Inverter and Backlight Troubleshooting Troubleshooting Due to several circuits responsible for generating the high voltage for the backlights it will be necessary to bring the following boards to the repair Unlike other model designs that utilize stand-alone inverters and balancer location if a 6X error is occurring: boards, this model does not generate the familiar 13X protection shutdown •... -
Page 17: Basic Tips
Chapter 4 - Inverter and Backlight Troubleshooting Basic Tips Always turn on the unit and watch for the lighting of the fluorescent lamps. If they light before the unit shuts down it is a good indication that you are dealing with a defective lamp since the inverter circuits must turn on to light them. - Page 18 Chapter 4 - Inverter and Backlight Troubleshooting Backlight Error 6X Even lighting Dark on left Dark on right across screen? side? side? Backlights turn on before shutdown? LCD Panel Right Inverter Left Inverter 24VDC at 17VDC 120VAC CN6800 and across CN6900 at CN6500 left Left G9 Board CN6802 on left...
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Page 19: Chapter 5 - Appendix
CF1 Board Removal This appendix section of the training manual contains additional information to assist in servicing the KDL70XBR7 that is not found in the CTV50 The CF1 board can be removed without having to remove the wall-mount training material because it is unique to this model. -
Page 20: Fan Error Troubleshooting
Chapter 5 - Appendix Fan Error Troubleshooting If the unit is shutting down with a 9X error code it must be determined if one of the fans is defective or if there is a fan drive problem. The flowchart in Figure 5-2 will assist in this issue. COOLING FAN ERROR 9X NOTE: COOLING FANS... -
Page 21: Diagnostics History
Chapter 5 - Appendix Diagnostics History ERROR BLINK EVENT CODE COUNT Whenever a problem is detected by the self-diagnostics feature that causes the unit to shut down, the event is recorded and stored in NVM. This is particularly helpful when dealing with intermittent failures but not so helpful if the unit is always shutting down. -
Page 22: Voltage Test Points
Chapter 5 - Appendix Voltage Test Points Critical voltage test points and information for the G8, G9, and Inverter boards are illustrated in Figures 5-4 through 5-6 CN6200 1 – PRI_VCC1 2 – PRI_VCC GND 3 – NC 4 – PRI_VCC2 5 –... - Page 23 Chapter 5 - Appendix CN6801 CN6900 1 – REG_12V 1 – PRI_VCC (17VDC) 2 – NC 2 – PRI_VCC GND 3 – GND 4 – NC 5 – INV_ERR 6 – INV_ON 7 – BALANCER_ERR (NOT USED) 8 – DIMMER 9 –...
- Page 24 Chapter 5 - Appendix CN1002 CN101 1 – A OUT 1~5 – VIN 2 – B OUT 6~10 – GND 3 – GND 11~14 – NC 4 – OVP 5 – GND 6 – UVL01 7 – UVL02 CN100 1~5 – VIN 6~10 –...
- Page 25 Sony Electronics 2007 Sony Electornics, Inc. SEL Service Company 16530 Vill Esprillo National Training Dept. MZ3215 CTV531208 1/20/09 San Diego, CA 92127 Reproduction in whole or part without written permission is prohibited. All rights reserved...