LG INFINIA 47LE8500 Manual Download Page 76

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July 2010 LCD TV

47LE8500

Main Board DC to DC Converter (Voltages for Panel) Checks

-5V

VGL

D9102

+27V

VGH

D9101

+3.3V

VCC

+16V

VDD

Panel 12V

Location: Top Center of Board

IC9103

+7.81V

HVDD

IC9102

B+ for

IC9102
IC9103

L9102

L9104

L9100

L9101

Panel 12V

Leandro

Palmeira

Summary of Contents for INFINIA 47LE8500

Page 1: ...0 1080P 47LE8500 47LE8500 LED Backlights 1080P Direct View LCD Training LCD DV Troubleshooting 47 Class Full HD 1080P LCD TV 47 diagonally Published July 23 2010 Updated December 06th 2010 L e a n d r o P a l m e i r a ...

Page 2: ...eshooting of Contact Information Preliminary Matters Specifications LCD Overview General Troubleshooting Steps Signal Distribution Disassembly Instructions and Voltages Main Board Inverter Boards Main and Secondary LED Backlight Drivers Soft Touch Keys Disassembly Section Removal of Circuit Boards Ft Control Board Speakers L e a n d r o P a l m e i r a ...

Page 3: ...time and money sometimes can be overlooked These techniques will also be presented This Section will get the Technician familiar with the Disassembly Identification and Layout of the LCD Display Panel At the end of this Section the Technician should be able to Identify the Circuit Boards and have the ability and knowledge necessary to safely remove and replace any Circuit Board or Assembly Overvie...

Page 4: ...uthorized modifications will not only void the warranty but may lead to property damage or user injury If wires screws clips straps nuts or washers used to complete a ground path are removed for service they must be returned to their original positions and properly fastened CAUTION CAUTION To avoid personal injury disconnect the power before servicing this product If electrical power is required f...

Page 5: ... Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications However there is no guarantee...

Page 6: ...D DV http 136 166 4 200 Training Manuals Schematics with Navigational Bookmarks Start Up Sequence Owner s Guides Interconnect Diagrams Dimensions Connector IDs Product Pictures and Features 42SL80 47LG90 47LH85 42LE5500 42LX6500 3D 47LX9500 3D 55LX6500 3D 42PG20 42PJ350 42PQ20 42PQ30 50PG20 50PJ350 50PK250 50PK750 50PS80 50PK950 50PS60 60PK750 60PK950 60PS11 60PS60 60PS80 LCD DV PLASMA Also availa...

Page 7: ...n making voltage and waveform checks to prevent costly short circuits from damaging the unit 5 Be cautious of lost screws and other metal objects to prevent a possible short in the circuitry 1 Check the appearance of the Replacement Panel and Circuit Boards for both physical damage and part number accuracy 2 Check the model label Verify model names and board model matches 3 Check details of defect...

Page 8: ...ing your senses the first check should always be the DC Supply Voltages to those circuits under test Always confirm the supplies are not only the proper level but be sure they are noise free If the supplies are missing check the resistance for possible short circuits Isolate To further isolate the failure check for the proper waveforms with the Oscilloscope to make a final determination of the fai...

Page 9: ...TV 47LE8500 9 This section of the manual will discuss the specifications of the 47LE8500 LCD Direct View Display 47LE8500 PRODUCT INFORMATION SECTION 47LE8500 PRODUCT INFORMATION SECTION L e a n d r o P a l m e i r a ...

Page 10: ... connections 1 HDMI Cable from the Dongle to the TV to transfer Audio and Video Signals 2 Wired Remote cable between the TV and Dongle for Control Functions WIRELESS SECTION Wireless Media Box WIRELESS SECTION Wireless Media Box Media Box Wireless Receiver Transmitter Dongle Attaches via Velcro to the back of the set Wired Remote to control the Media Box HDMI TV A V Inputs L e a n d r o P a l m e ...

Page 11: ... sold separately allows the TV to connect to a wireless LAN network The DLNA adaptor attaches to the Television via either of the two USB connections Wireless LAN DLNA Adaptor Wireless LAN DLNA Adaptor Wireless Router DLNA Adaptor Dongle Side A V Inputs 1 DLNA Digital Living Network Alliance L e a n d r o P a l m e i r a ...

Page 12: ...ied TruMotion 240Hz Full HD 1080p Resolution 9M 1 Dynamic Contrast Ratio Seamless Design Picture Wizard II Easy Picture Calibration Smart Energy Saving ENERGY STAR Qualified XD Engine Intelligent Sensor AV Mode II Cinema Sports Game Clear Voice II ISFccc Ready 24P Real Cinema USB 2 0 JPEG MP3 DivX HD DivX HD 4 HDMI V 1 3 w Deep Color SIMPLINK Connectivity Dolby Digital 5 1 Decoder Infinite Sound L...

Page 13: ...freedom with wireless HD capability You don t have to take our word for it that this is an amazing TV To earn THX certification our TV s passed more than 30 rigorous tests ensuring you re bringing an uncompromised HD experience home as the director wanted it Entertainment on tap NetCast Entertainment Access brings the best Internet services direct to your TV no computer required Instantly access m...

Page 14: ...twice the picture quality of standard HDTV with almost double the pixel resolution See sharper details like never before Just imagine a Blu ray disc or video game seen on your new LG Full HD 1080p TV HDMI 1 3 Deep Color Digital multi connectivity HDMI 1 3 Deep color provides a wider bandwidth 340MHz 10 2Gbps than that of HDMI 1 2 delivering a broader range of colors and also drastically improves t...

Page 15: ... when background noise swells Save Energy Save Money Home electronic products use energy when they re off to power features like clock displays and remote controls Those that have earned the ENERGY STAR use as much as 60 less energy to perform these functions while providing the same performance at the same price as less efficient models Less energy means you pay less on your energy bill Draws les...

Page 16: ...uesswork out of picture adjustments with this simple to use feature It s not actually magic but it will sure seem that way TruMotion 240Hz See sports video games and high speed action with virtually no motion blur and in crystal clarity with LG s TruMotion 240Hz technology Now your TV can keep up with the fastest moving scenes Seamless Design You ll love the stunning picture while it s on and marv...

Page 17: ...July 2010 LCD TV 47LE8500 17 47LE8500 Remote Control 47LE8500 Remote Control TOP PORTION BOTTOM PORTION p n AKB72914003 L e a n d r o P a l m e i r a ...

Page 18: ...ervice Menu 1 You must have either Service Remote p n 105 201M or p n MKJ39170828 2 Press In Start 3 A Password screen appears 4 Enter the Password Note A Password is required to enter the Service Menu Enter 0000 Note If 0000 does not work use 0413 MKJ39170828 105 201M L e a n d r o P a l m e i r a ...

Page 19: ...for Software Upgrades Wireless Dongle Music and Photos Rear In Out Jacks USB 2 LAN USB 2 USB 1 LAN USB 1 Component or Composite Video Audio 3 Wireless Media Box Remote Jack Head Phones MAIN BOARD Rear and Side Input Output locations HDMI 4 July 2010 LCD TV 47LE8500 19 L e a n d r o P a l m e i r a ...

Page 20: ...loads however if there are problems completing download a Wired Internet Connection is preferred For network setup assistance press the green button for the Simple Manual With Software Update Highlighted Press Select on Remote Continue on next page Bring up the Customer s Menu then Press the Red button on Remote Scroll down to item 9 Network Connections L e a n d r o P a l m e i r a ...

Page 21: ...sion comparison current software version and Released software version After completion of the test a Pop up menu is displayed with preloaded back ground picture Select NO if everything is OK Additional TV Checks can be made by Scrolling down Picture Sound and Network Test If you select Yes Service call number Model name SW version and serial No is displayed Note Confirm the Suffix of the model nu...

Page 22: ...can see the download progress Bar 7 Do not unplug until unit has automatically restarted 8 When download is completed you will see COMPLETE 9 Your TV will be restarted automatically USB Automatic Software Download Instructions USB Automatic Software Download Instructions Currently Installed Version Software Version found on the USB Flash Drive CAUTION Do not remove AC power or the USB Flash Drive ...

Page 23: ...croll to OPTIONS Press the FAV key 7 times to bring up the Manual Download Screen Example of files found On the Jump Drive Highlight the Software update file and press SELECT to begin the download process WARNING Use extreme Caution when using the Manual Forced Download Menu Any file can be downloaded when selected and may cause the Main board to become inoperative if the incorrect file was select...

Page 24: ...Scroll down to item 6 Model Number D L to highlight Press Select or Cursor Right Change the Model and Serial Number to match To Change the Model Number Use the cursor right or left to select the area to change Use the cursor up or down to change Cursor right until there is no text cursor blinking Scroll down to highlight Serial Number and change L e a n d r o P a l m e i r a ...

Page 25: ...010 LCD TV 47LE8500 25 Service Menu Downloading EDID Data Pg 1 of 2 Service Menu Downloading EDID Data Pg 1 of 2 1 Press ADJ key 2 Select menu Either PCM EDID D L or AC3 EDID D L L e a n d r o P a l m e i r a ...

Page 26: ...lect key 4 When Writing appears Downloading in progress 5 Downloading Complete When PCM EDID D L was selected When AC3 EDID D L was selected Note When PCM is downloaded AC3 will be N G and when AC3 is downloaded PCM will be N G This means that when PCM is OK PCM audio is priority and when AC3 is OK AC3 audio is priority L e a n d r o P a l m e i r a ...

Page 27: ...7 08mm 1 3 8 34 93mm 10 13 16 274 32mm 7 7 8 200mm 8 7 16 214mm 11 5 8 295mm 2 3 8 60 32mm Weight w o Stand 59 4 lbs Weight with Stand 70 lbs Center There must be at least 4 inches of Clearance on all sides 27 19 5 16 490mm 13 15 16 353 22mm Model No Serial No Label Wattage Local Dimming 90W Full White 130W Stand By 0 1W July 2010 47LE8500 LCD DV L e a n d r o P a l m e i r a ...

Page 28: ...discuss Disassembly Layout Circuit Board Identification of the 47LE8500 LCD Direct View Television Upon completion of this section the Technician will have a better understanding of the disassembly procedures the layout of the printed circuit boards and be able to identify each board L e a n d r o P a l m e i r a ...

Page 29: ...screw as there are many different types Putting in an improper screw when reassembling may Cause damage The Stand has to be removed before removing the back Removing the Back Cover Removing the Back Cover The AC Cord Does Not unplug Stand Base is Glass Handle with Care L e a n d r o P a l m e i r a ...

Page 30: ...ouch Keyboard Inverter Main Inverter Secondary Extension Board A Main Extension Board B Main Extension Board Secondary LVDS Cables Panel Connection Points Invisible Speaker Left LG Logo Board Clips hold the front glass in place use caution Suggest adding screw while servicing Warning The Frame has very sharp edges L e a n d r o P a l m e i r a ...

Page 31: ...N11 CN14 CN15 CN16 CN17 CN18 CN19 CN20 CN21 CN22 CN25 CN26 CN27 CN28 CN29 CN30 CN31 CN32 CN33 n c n c n c CN1 SK101 CN2 P204 P205 P201 CN1 CN3 CN2 CN11 CN4 CN5 CN12 CN104 CN105 CN23 CN24 P7500 P7501 P7900 P7901 P8000 P8200 P8800 CON1 CON2 CON3 To TFT Panel CN13 LED Extension Board LED Extension Board LED Extension Board CN103 p n AFB72950101 p n AFB72950101 CN101 V25 V32 V33 V40 V41 V48 V49 V56 V5...

Page 32: ...04 and AC In SK101 P201 Press in gently on the two tabs to release lock P201 SK101 Remove the 6 screws indicated by the arrows AC In P205 P204 SK101 fits very snug into it s connector Press in on the two tabs to release lock Board is Thin be careful not to flex p n EAY60908801 L e a n d r o P a l m e i r a ...

Page 33: ...look for a piece of Chocolate Heat Transfer Material Be sure to transfer to new Board if present Disconnect P7500 P7501 P7900 P7901 P8000 P8200 and P8800 P7500 P7501 Decorative Metal Plate P7900 Remove decorative plastic and remove the board P8800 P8200 P8000 P7901 Press in on the top and bottom release tabs to remove N C After removing the Main there are tabs sticking through the Main board holdi...

Page 34: ...11 Use caution do not allow screws to fall NOTE If Servicing the Board leave the screws installed to provide stability and grounding CN1 CN3 CN2 Flip the locking tab upward pull the ribbons out N C CN5 CN4 On CN2 CN3 CN4 and CN5 Flip the locking tab upward pull the ribbons out Board will run without Inverter Secondary p n AFB72950101 Comes with Inverter Secondary L e a n d r o P a l m e i r a ...

Page 35: ...isconnect CN101 CN103 CN104 and CN105 CN103 Use caution do not allow screws to fall NOTE If Servicing the Board leave the screws installed to provide stability and grounding N C On CN104 and CN105 Flip the locking tab upward pull the ribbons out CN105 CN104 CN101 Board will run without Inverter Main p n AFB72950101 Comes with Inverter Main L e a n d r o P a l m e i r a ...

Page 36: ...ard Removing Front IR Board IR board Intelligent Sensor p n EBR64966401 Disconnect CON1 CON2 and CON3 connectors CON2 CON3 Tab Tab CON1 Press upward on the two tabs at the top Tilt the board downward and lift straight up L e a n d r o P a l m e i r a ...

Page 37: ...ION TROUBLESHOOTING SECTION Troubleshooting This section of the manual will discuss troubleshooting Upon completion of this section the Technician will have a better understanding of how to diagnosis and resolve problems L e a n d r o P a l m e i r a ...

Page 38: ...ground during this time F101 is 3V When the controller chip receives the PWR ON command 3 3V via P201 Pin 1 the primary section increases its current supplying ability Both Primary fuses F101 and F501 now read a little more than 390V P201 Connector To Main Board 12V is routed out P201 pins 17 19 and 21 and 24V is routed out P201 pins 2 3 and 4 P204 Connector To Inverter Main Board 24V is routed ou...

Page 39: ...MPS Board Layout Power Supply SMPS Board Layout Hot Ground Shock Hazard F101 3 15A 250V STBY 2 9V Run 393 3V From Hot Gnd F501 3 15A 250V STBY 159 6V Run 392 6V From Hot Gnd F100 6 3A 250V AC Protect p n EAY60908801 L e a n d r o P a l m e i r a ...

Page 40: ...del After Mute Released LVDS Video Ft IRKey 24V INV On Model 1_Opt1 Panel Control INV_CTL Microprocessor IC8101 RL_ON Tru Motion LVDS Video C8108 R8184 Q8004 CN1 P201 Bridge P204 To Panel Backlights Power On Power On 5 P205 CN101 24V P8000 Soft Touch Key 12V 24V Regulators P8200 Inverter On P7500 Reset Generator 1 AC In 3 5V_ST B Cent Extension Board A Left Extension Board A Right Extension Board ...

Page 41: ...03 Model_Opt_1 1 8V 12V R8010 10KΩ C8000 100uF 3 5V_ST RL_ON GPIO 09 2 92V 41 Q8002 L8000 3 5V_ST n c INV_On PWR ON PWM DIM IC8101 Micro RL_ON Power Det 14 Reset 40 Key 1 25 Key 2 26 Power On Off 2_2 20 R8004 4 7K 3 44V 3 44V 3 44V 11 9V Q8001 0V 36 R8060 10KΩ 3 3V_Normal Reset 11 9V 12V Gnd 13 13 16 16 n c n c n c 23 23 n c n c n c Gnd Q8000 R8032 10K R8187 22Ω R8184 47K C8108 0 1uF IC900 BCM R10...

Page 42: ...g at the connector SK101 b Unplug P8000 on the Main Board to make insertion of the Jumpers easier Use P700 Side to insert resistors TEST 1 1 Add a jumper between 3 5V STBY pin 7 8 9 or 10 and Pin 1 PWR_ON Apply AC This will turn on the power supply relays will click a Check that the 24V and 12V power supplies are turned on P201 12V pins 17 19 and 21 P201 24V pins 2 3 and 4 P204 and P205 24V pins 1...

Page 43: ...PS OK Inverter OK Backlights Abnormal a Recheck all connections b Confirm the INV On Off line pulling up to at least 3V and arriving at both Inverters c Check the connections to the Inverters If the 24V and the Inverter On command is arriving at the Inverters in then see Inverter Section for further testing Note Either Inverter can run separately REMOVE AC POWER Power Supply Board Backlights Test ...

Page 44: ...de Check Power Supply Connector P201 Voltage and Diode Check Open 0V 0V ERROR 24 Open 0V n c n c 23 Open 0V n c n c 22 1 39V 11 9V 0V 12V 21 Open 0 37V 3 3V 0V 1 P DIM 20 1 39V 11 9V 0 42V 12V 19 Open 2 92V 0V INV ON 18 1 39V 11 9V 0V 12V 17 Open n c n c n c 16 Gnd Gnd Gnd Gnd 13 15 Open 3 44V 3 45V 3 5V 9 12 GND GND GND GND 5 8 0 424V 24 6V 0V 24V 2 4 1 68V 3 3V 0V PWR ON 1 Diode Check Run STBY L...

Page 45: ...condition Output from the Video Processor IC900 Range 0 37V to 3 3V P204 SMPS to CN14 Inverter Main Open 0V 0V ERROR 14 Open n c n c n c 13 Open 2 92V 0V 2 I C 12 Open 0 37V 3 3V 0V 1 P DIM 11 GND GND GND GND 6 10 0 424V 24 6V 0V 24V 1 5 Diode Check Run STBY Label Pin Open 2 92V 0V 2 I C 12 Open 0 37V 3 3V 0V 1 P DIM 11 GND GND GND GND 6 10 0 424V 24 6V 0V 24V 1 5 Diode Check Run STBY Label Pin P2...

Page 46: ... with all Connectors Removed AC Voltage Readings From Hot Ground Pins 1 and 2 for STBY and RUN OL N EL132 OL 120Vac L EL131 Diode Check Run STBY Label Pin SK101 SMPS to AC IN SK101 Bottom Right of SMPS F100 F100 6 3A 250V AC IN F100 Diode Check Main Power Switch Closed Red or Black Lead on Fuse Open Other Lead on Hot Ground L N L e a n d r o P a l m e i r a ...

Page 47: ...01 and F501 Voltage Checks F101 F101 3 15A 250V From Hot Gnd STBY 2 9V Run 393 3V F501 F501 3 15A 250V From Hot Gnd STBY 159 6V Run 392 6V If reading the voltage on F101 right after power off it takes a very long time to bleed down to the reading given here L e a n d r o P a l m e i r a ...

Page 48: ...er Secondary 13V U101 Q105 Q106 L206 and C151 out CN104 and CN105 The Inverters must also deliver grounding pulses Drive Signals to each of the 216 LED Blocks This is accomplished by the 15 switching components 10 on Inverter Main U3 U11 and U13 and 5 on Inverter Secondary U2 U5 and U13 Inverter Main has 4 Connectors CN2 CN5 that connect to Extensions boards The Left hand Extension board as viewed...

Page 49: ... The Image below shows the actual Backlight Bars used in the 47LE8500 The Cartridges are assembled from the bottom to the top like shingles on a roof Cartridge Bar Cartridges Removed Integrated Optic Plate Integrated Optic Plate L e a n d r o P a l m e i r a ...

Page 50: ...tructure Information 4 LEDs per block 216 Blocks 8 Blocks per cartridge 9 bars with 3 cartridges per bar 32 LEDs per cartridge 96 LEDs per bar 864 LEDs total BLU Backlight Unit Cartridge Bar Cartridge There are 3 Cartridges per bar L e a n d r o P a l m e i r a ...

Page 51: ...te LED Bar 32 LEDs 4 LEDs per block 8 blocks Lens Reflector White Sheet Light Uniformity Connector Slots Each Connector has 10 pins 2 are B 13V and 8 block controls LED Front Metal Plate The Individual LEDs can be checked using the Diode Mode forward bias test The LED will light L e a n d r o P a l m e i r a ...

Page 52: ...2010 47LE8500 LCD DV CN1 LED Extension Board V25 V32 V33 V40 V41 V48 V49 V56 V57 V64 V65 V72 V73 V80 V81 V88 V89 V96 CN2 CN3 CN4 CN5 CN6 CN7 CN8 CN9 CN10 CN11 LED Extension Board V73 V80 V81 V88 V1 V8 V9 V16 V17 V24 V25 V32 V33 V40 V41 V48 V49 V56 CN25 CN26 CN27 CN28 CN29 CN30 CN31 CN32 CN33 CN23 CN24 LED Extension Board V105 V112 V113 V120 V121 V128 V29 V136 V137 V144 V145 V152 V153 V160 V161 V16...

Page 53: ... 1 Case Top Ass y 2 TFT Panel Ass y 3 Guide Panel 4 Sheet DBEFD 5 Sheet Prism U 6 Sheet Prism L 7 Sheet Diffuser L 8 Plate Diffuser 9 Cartridge Ass y 10 Cover Bottom 11 Driver Boards 2 12 Extension Boards 3 13 FRC Flexible Ribbon Cables 13 12 11 10 9 8 7 6 5 4 3 2 1 L e a n d r o P a l m e i r a ...

Page 54: ... C C89 CN11 U103 L103 CN3 CN2 CN4 CN5 U10 U1 U501 U7 U3 U11 U8 U13 E C B Q10 U101 E C B Q2 E C B Q16 E C B Q11 E C B Q1 Q15 E C B E C B Q3 Q12 24 6V Gnd 3 3V 3 46V 13V 12 96V 13V 12 77V 24 6V 13V 13V DO NOT MEASURE CN1 INVERTER MAIN BOTH INVERTERS p n AFB72950101 U102 U9 Y501 Y1 8Mhz 8Mhz 13V POWER SUPPLY For CN2 CN3 13V POWER SUPPLY For CN4 CN5 L e a n d r o P a l m e i r a ...

Page 55: ...Q106 Q105 N C E C B E C B E C B E C B Q3 Q12 Q108 Q109 Q103 Q101 Q102 L206 Q501 July 2010 47LE8500 LCD DV 47LE8500 Inverter Secondary Layout 47LE8500 Inverter Secondary Layout 55 12 8V 13V 24 6V 13V DO NOT MEASURE C151 INVERTER SECONDARY BOTH INVERTERS p n AFB72950101 Y501 8Mhz 13V POWER SUPPLY For CN104 CN105 L e a n d r o P a l m e i r a ...

Page 56: ...For Main Extensions Board A Left Side To Connectors CN2 and CN3 B 12 92V For Main Extensions Board B Center To Connectors CN4 and CN5 B A CN2 A B To CN 1 Extension Left CN3 B for LED Blocks Pins 1 2 11 12 21 22 31 32 41 42 To CN 2 Extension Left CN2 B for LED Blocks Pins 9 10 11 12 21 22 31 32 To CN 12 Extension Cent CN4 B for LED Blocks Pins 11 12 21 22 31 32 41 42 To CN 13 Extension Cent CN5 B f...

Page 57: ...er Secondary B Routing 47LE8500 Inverter Secondary B Routing 57 12 8V 13V 24 6V 13V DO NOT MEASURE INVERTER SECONDARY C C 13V For Secondary Extensions Board Right Side Connectors To Connectors CN23 and CN24 C C To CN 23 Extension Right B to LED Blocks pins 19 20 29 30 39 40 49 50 To CN 24 Extension Right B to LED Blocks pins 1 2 11 12 21 22 31 32 41 42 C151 DC to DC Driver Gnd 1 2 3 5V 12 8V Gnd Q...

Page 58: ...oubleshooting DC to DC Converter Troubleshooting 30V p p 296KHz Q5 Q8 or Q106 Pin 1 13 5V p p 296KHz Q4 Q7 or Q105 Pin 1 30V p p 296KHz Q4 Q7 or Q105 Pin 3 1 3 2 Each of the Pin numbers for the Components listed above are the same Q5 Q8 or Q106 Pin 3 is Ground L e a n d r o P a l m e i r a ...

Page 59: ...mer s Menu the DC Level of P DIM is manipulated by Overall Contrast Ratio Monitored by the BCM or Mstar Video Processor As the overall brightness of the video content decreases so does P DIM voltage If the Intelligent Sensor is utilized it too manipulates P DIM As the overall room light decreases in intensity P DIM decreases This data represents nearly 5000 steps in room light monitoring It is rou...

Page 60: ...101 Check Top Left of the Board Just under CN1 Connector F1 Diode Mode Check 1 365V Red Lead on Fuse 0 58V Black Lead on Fuse Top Left of the Board Just to the right of CN101 Connector F101 Diode Mode Check 1 385V Red Lead on Fuse 0 58V Black Lead on Fuse Inverter Main Inverter Secondary F1 12A 65V F101 12A 65V L e a n d r o P a l m e i r a ...

Page 61: ...rystals Y1 Y501 Main and Y501 on Secondary Inform Inverter Crystals Y1 Y501 Main and Y501 on Secondary Information ation Crystal Y301 Inverter Main Inverter Secondary Y501 Y501 Y1 Use Top Leg Use Bottom Leg 8Mhz L e a n d r o P a l m e i r a ...

Page 62: ...oard connects to CN4 and CN5 CN2 13V Line Pins 9 10 11 12 21 22 31 32 Example U5 Voltage Supplies from Inverter Main To Extension Boards Left and Center CN3 13V Line Pins 1 2 11 12 21 22 31 32 41 42 Inverter Secondary has 2 Connectors CN104 CN105 that connect to the right hand Extension board rear view Each Extension board has 9 connections to the Backlight LEDs CN4 13V Line Pins 11 12 21 22 31 32...

Page 63: ...03 Inv Secondary 100 IRE 3 68V p p 120Hz 5 IRE 3 88V p p 120Hz Drive Signals being delivered to the LED Blocks V1 V216 Note If a particular block is exhibiting a dimmer level than the other or the overall brightness seems dim be sure to first check the customer s Menu setting for Backlights Raise the percentage and see if the overall brightness returns to normal If not 1st Check the P DIM level it...

Page 64: ...55V B CN4 pin 01 20 B 31 12 55V B CN4 pin 02 19 B 32 0 7V 3 9V V81 CN4 pin 03 18 V81 33 0 7V 3 9V V82 CN4 pin 04 17 V82 34 0 7V 3 9V V83 CN4 pin 05 16 V83 35 0 7V 3 9V V84 CN4 pin 06 15 V84 36 0 7V 3 9V V85 CN4 pin 07 14 V85 37 0 7V 3 9V V86 CN4 pin 08 13 V86 38 0 7V 3 9V V87 CN4 pin 09 12 V87 39 0 7V 3 9V V88 CN4 pin 10 11 V88 40 12 55V B CN3 pin 01 10 B 41 12 55V B CN3 pin 02 9 B 42 0 7V 3 9V V8...

Page 65: ...etting and then Intelligent Sensor room light condition Output from the Video Processor IC900 Range 0 37V to 3 3V Not Used Open 0V 0V ERROR 14 Open N C N C N C 13 Open 2 92V 0V I C 12 Open 0 37V 3 3V 0V 1 P DIM 11 GND GND GND GND 6 10 0 42V 24 6V 0V 24V 1 5 Diode Check Run STBY Label Pin Open 2 92V 0V I C 12 Open 0 37V 3 3V 0V 1 P DIM 11 GND GND GND GND 6 10 0 42V 24 6V 0V 24V 1 5 Diode Check Run ...

Page 66: ...V 0 18V 0 28V 0V S_MOSI 9 1 65V 2 6V 0V S_CS_N 8 GND GND GND GND 7 Open 0 23V 0V M1_SCLK 6 Open 0 04V 3 26V 0V M1_MOSI 5 GND GND GND GND 4 Open 0 23V 0V M0_SCLK 3 Open 0 04V 3 26V 0V M0_MOSI 2 Open 0 05V 0V L_VS 1 Diode Check Run STBY Label Pin Black to White CN103 Inverter Secondary to Main P7901 Black to White Gnd Gnd Gnd Gnd 8 Open 0V 0V n c 7 Open 0V 0V n c 6 Gnd Gnd Gnd Gnd 5 Open 0 23V 0V M2...

Page 67: ...8500 67 Inverter Main and Secondary Local Dimming Control Signals Wavefo Inverter Main and Secondary Local Dimming Control Signals Waveforms rms For clearer details see the Interconnect Diagram L e a n d r o P a l m e i r a ...

Page 68: ...lection circuits STAND BY STBY 3 5V P8000 pins 9 12 The Main board also develops several B sources on the board LVDS Panel_VCC 12V Not generated but switched from the 12V arriving from the SMPS AUDIO 1 8V 3 3V BCM IC900 Video Processors 1 2V IC9301 Tru Motion and Dimming IC 1 26V_MEMC 1 5V_MEMC D1 5V D1 8V and 3 3V T CON IC9001 3 3V_VCC 5V_VGL 25V_VGH 16V_VDD and HVDD 7 7V RUN 12V pins 13 and 14 2...

Page 69: ...on IC9301 runs Hot This is normal P7501 To Panel P7500 Component These connectors are Mini plug type P7900 To Inverter Main P8800 To Speakers P8200 To Front IR P8100 n c P7901 To Inverter Secondary LAN Wireless Remote P9000 n c P8000 To SMPS See next page for component identification L e a n d r o P a l m e i r a ...

Page 70: ...7900 X9000 12Mhz P9000 Update X8100 IC8101 SW8100 IC1000 SW1000 IC8004 IC8800 Q8800 IC8801 L8804 L8805 P8800 P8200 Q8200 Q8201 IC9100 IC8901 IC9301 LG5111 RX TX IC9001 T CON LG7378A IC8300 IC900 Video Processor LGE3549XQ Micro Q8306 Q8307 TU700 TDVJ H031F 18 IF p 17 IF n 16 IF AGC 15 Reset 14 3 3V 13 1 26V 12 GND 11 CVBS 10 NC 9 SIF 8 NC 7 SDA 6 SCL 5 NC 4 NC 3 5V 2 NC 1 NC Analog Video Digital Vi...

Page 71: ... GAMMA 2 0V Gnd 3 5V IC8001 D1 2V and A1 2V IC8800 1 8V_AMP Pin Chip 3 3 34V Out 4 3 3V Pin Regulator IC8004 A2 5V Regulator Pin Regulator 1 3 3V 5 3 3V 1 0V Gnd Pin for USB 1 0V Gnd 2 0V Gnd IC9302 1 8V_L Dimming 6 5V Out 2 3 3V 1 n c 2 1 8V Out 3 3 3V In Pin Regulator 7 5V Out 3 0V Gnd 2 3 26V In 3 3 295V In 4 0V Gnd 1 0V Gnd 8 n c 4 1 2V 3 3 26V In 5 6 8V 2 11 8V In 5 3 3V 4 n c IC8901 1 5V_MEM...

Page 72: ...ubber IC8100 D8312 Q8308 Q200 Rubber D8306 Q8302 Q8305 D8309 Q8300 Q8303 IC8400 D8307 Q8301 Q8304 IC8401 IC8200 Rubber Q702 Q701 Q901 18 IF p 17 IF n 16 IF AGC 15 Reset 14 3 3V 13 1 26V 12 GND 11 CVBS 10 NC 9 SIF 8 NC 7 SDA 6 SCL 5 NC 4 NC 3 5V 2 NC 1 NC TU700 TDVJ H031F E C B A1 C A2 Q D D G S B 1 2 3 IC8700 Q8701 Q8205 Q8203 L e a n d r o P a l m e i r a ...

Page 73: ...0V Gnd 15 3 3V E Gnd C 0V 5 3 37V IC8401 EDID Data 16 3 3V E Gnd 6 3 37V Pin PC Q901 FLASH_WP 7 0V Gnd 1 0V Gnd IC9303 EEPROM Pin for IC901 Q8303 4 5 HDMI 3 8 3 37V 2 0V Gnd Pin for LG5111 B 0V Flash_WP Pin Det 3 0V Gnd 1 0V Gnd C 3 36V B 0V IC8200 RS232 4 0V Gnd 2 0V Gnd E Gnd C 4 2V Pin Routing 5 0 7V 3 0V Gnd E Gnd 1 0V 6 4 1V 4 0V Gnd Q8000 RL_ON PWR_On 2 0V 7 4 5V 5 3 37V Pin 1st Driver Q8308...

Page 74: ...ain Board X9001 and X9000 Crystal Checks 25Mhz MAIN Board 1 58V 1 6V X9001 3 19V p p 4 86V p p IC9001 T CON Crystal 1 56V 1 6V X9000 2 54V p p 3 27V p p IC9301 TruMotion Dimming Crystal 12Mhz X9001 X9000 Runs when set is On Runs when set is On L e a n d r o P a l m e i r a ...

Page 75: ...hecks 10Mhz MAIN Board 1 95V 1 52 X8100 3 13V p p 2 26V p p IC900 BCM Crystal 1 52V 1 3V X1001 781mV p p 789mV p p IC8100 Micro Crystal 54Mhz X8100 X1001 X8101 1 75V 1 5V 1 85V p p 2 82V p p Either leg Either leg Either leg Runs all The time Runs when set is On Runs all The time L e a n d r o P a l m e i r a ...

Page 76: ...es for Panel Checks Main Board DC to DC Converter Voltages for Panel Checks 5V VGL D9102 27V VGH D9101 3 3V VCC 16V VDD Panel 12V Location Top Center of Board IC9103 7 81V HVDD IC9102 B for IC9102 IC9103 L9102 L9104 L9100 L9101 Panel 12V L e a n d r o P a l m e i r a ...

Page 77: ... Panel Voltage Checks Main Board Additional Panel Voltage Checks 4 8V VDD ODD Location Top Left of Board From IC9101 Pin 21 P7500 P7501 4 8V VDD EVEN 4 7V VST IC9101 Back Side of Board From IC9101 Pin 20 From IC9101 Pin 19 L e a n d r o P a l m e i r a ...

Page 78: ...ting and Intelligent Sensor room light condition Range 0 37V to 3 3V P8000 Main Board to P201 SMPS P8000 Odd Pins Front Row Gnd 0V 0V ERROR 24 Open n c n c n c 23 Open n c n c n c 22 Open 11 9V 0V 12V 21 Open 0 37V 3 3V 0V 1 P DIM 20 Open 11 9V 0V 12V 19 1 63V 2 92V 0V INV ON 18 Open 11 9V 0V 12V 17 Open n c n c n c 16 Gnd Gnd Gnd Gnd 13 15 1 24V 3 44V 3 45V 3 5V 9 12 Gnd Gnd Gnd Gnd 5 8 Open 24 6...

Page 79: ... 2 Gnd Gnd Gnd 1 Diode Check Run Label Pin Open 7 81V HVDD 40 Open 7 81V HVDD 39 Gnd Gnd Gnd 38 1 64V 3 3V VCC 37 1 64V 3 3V VCC 36 Gnd Gnd Gnd 35 1 09V 1 3V LV5 34 0 9V 1 02V LV5 33 1 09V 1 3V LV4 32 0 9V 1 02V LV4 31 1 09V 1 27V LV3 30 0 9V 1 07V LV3 29 1 09V 1 17V LVCLK 28 0 9V 1 16V LVCLK 27 1 09V 1 3V LV2 26 0 9V 1 03V LV2 25 1 09V 1 3V LV1 24 0 9V 1 4V LV1 23 1 09V 1 27V LV0 22 0 9V 1 06V LV...

Page 80: ...k Run Label Pin 0 9V 1 22V RV5 40 1 09V 1 13V RV5 39 0 9V 1 22V RV4 38 1 09V 1 12V RV4 37 0 9V 1 27V RV3 36 1 09V 1 08V RV3 35 0 9V 1 18V RVCLK 34 1 09V 1 17V RVCLK 33 0 9V 1 22V RV2 32 1 09V 1 13V RV2 31 0 9V 1 23V RV1 30 1 09V 1 13V RV1 29 0 9V 1 12V RV0 28 1 09V 1 07V RV0 27 Gnd Gnd Gnd 26 1 64V 3 3V VCC 25 1 64V 3 3V VCC 24 Gnd Gnd Gnd 23 Open 7 81V HVDD 22 Open 7 81V HVDD 21 Diode Check Run L...

Page 81: ... IR Board P8200 1 12 11 10 9 8 7 6 5 4 3 2 1 Pin Open 0V 0V LED_R BUZZ 0 59V 3 3V 0V 3 3V_Normal Gnd Gnd Gnd Gnd Open 1 54V 1 57V 2 IR Open 0V 0V LED_LOGO Gnd Gnd Gnd Gnd 1 24V 3 45V 3 45V 3 5V_ST 1 9V 3 29V 3 29V KEY 2 1 9V 3 29V 3 29V KEY 1 Gnd Gnd Gnd Gnd Open 3 45V 3 45V 1 SDA Open 3 45V 3 45V 1 SCL Diode Check Run STBY Label 1 Clock pulses only present when Intelligent Sensor is turned on 3 7...

Page 82: ...6V 0V S_CS_N 8 GND GND GND GND 7 1 08V 0 23V 0V M1_SCLK 6 1 08V 0 04V 3 26V 0V M1_MOSI 5 GND GND GND GND 4 1 08V 0 23V 0V M0_SCLK 3 1 08V 0 04V 3 26V 0V M0_MOSI 2 1 08V 0 05V 0V L_VS 1 Diode Check Run STBY Label Pin Black to White P7901 Main to Inverter Secondary CN103 Black to White Gnd Gnd Gnd Gnd 8 1 1V 0V 0V M3_SCLK 7 1 1V 0V 0V M3_MOSI 6 Gnd Gnd Gnd Gnd 5 1 1V 0 23V 0V M2_SCLK 4 1 1V 0 04V 3 ...

Page 83: ... Removed P8800 CONNECTOR Main to Speakers SPK L SPK L SPK R SPK R LABEL Open 12 3V 0V 4 Open 12 3V 0V 3 Open 12 3V 0V 2 Open 12 3V 0V 1 Diode Check Run SBY Pin Use speaker out to test for defective Audio Amp IC8801 Note Normal Audio B P8800 Q8800 Amp Mute Audio B 24V Pins 49 52 Mute Pin 25 Q8800 Mute Active Low Normal 3 3V Collector to Pin 25 IC8801 IC8800 Amp 1 8V 1 L e a n d r o P a l m e i r a ...

Page 84: ... Q8701 turned on by Q8700 front side of the board Q8700 turned on by Microprocessor pin 38 Diode Mode values taken with all Connectors Removed Gnd Gnd 0V Gnd 19 20 1 37V 3 3V 0 67V IR 18 Gnd Gnd 0V Gnd 17 1 22V 3 3V 0V Wireless_TX 16 1 17V 3 3V 0V Wireless_RX 15 Gnd Gnd 0V Gnd 14 1 02V 3 3V 0V I2C_SDA 13 1 02V 3 3V 0V I2C_SCL 12 Gnd Gnd 0V Gnd 11 1 1V 3 3V 0V n c 10 Gnd Gnd 0V Gnd 9 1 2V 3 3V 0V I...

Page 85: ...e measured 1 57V at pin 9 of connector CON1 or P8200 on the Main board in Stand By During run pin 9 reads 1 54V The IR pulses 1 6V p p CON1 pin 9 are sent to P8200 on the Main board and on to the Microprocessor IC8101 via pin 16 The Intelligent Sensor communicates with the Micro Video Processor IC900 BCM Chip via clock and data lines SCL1 and SDA1 arriving on connector CON1 from P8200 pins 1 and 2...

Page 86: ...t IR Board Connections Identified Front IR Board Connections Identified P100 CON1 IR board and Intelligent Sensor board To Main Board p n EBR64966401 CON2 CON3 To Soft Touch Key Board To Center Logo Board L e a n d r o P a l m e i r a ...

Page 87: ...3 5V_ST 6 Open 3 29V 3 29V KEY 2 5 Open 3 29V 3 29V KEY 1 4 Gnd Gnd Gnd Gnd 3 Open 3 45V 3 45V 1 SDA 2 Open 3 45V 3 45V 1 SCL 1 Diode Check Run STBY Label Pin Open 3 36V 3 45V 8 Open 3 36V 3 45V 7 Gnd Gnd Gnd 6 Open 3 28V 3 28V 5 Open 3 3V 3 3V 4 Gnd Gnd Gnd 3 Open 1 63V 0V 2 Open 3 36V 3 45V 1 Diode Check Run STBY Pin Gnd Gnd Gnd 4 0 0 6V 1 36V 3 Gnd Gnd Gnd 2 1 5 3V 3 45V 1 Diode Check Run STBY ...

Page 88: ...IBLE SPEAKER SECTION The 47LE8500 contains the Invisible Speaker system The Full Range Speakers point downward so there is no front viewable speaker grill or air ports Speaker p n EAB60961501 Installed Top View Side View Front View L e a n d r o P a l m e i r a ...

Page 89: ...obe version of the Training Manual The Adobe version of this Training Manual allows the viewer to The Adobe version of this Training Manual allows the viewer to zoom in and out making reading of the small text easier zoom in and out making reading of the small text easier This Power Point shows a graphical representation of the 11 X 17 This Power Point shows a graphical representation of the 11 X ...

Page 90: ...emove AC and Disconnect P204 When AC is reapplied the Backlight LEDs on the Right Back View should turn on Remove AC and Disconnect P205 and reinstall P204 When AC is reapplied the Backlight LEDs on the Left Back View should turn on For Waveforms on P7900 and P7901 See 2nd page of Interconnect SK101 AC In D221 T102 IC502 IC103 IC501 T501 F101 3 15A 250V Q111 Q110 Q231 F100 6 3A 250V CX103 RL101 G ...

Page 91: ...een 1V per div 4MSes 3 66V p p Inverter Main CN11 pin 09 Black Screen Inverter Main CN11 pin 11 White Screen 1V per div 4MSes 3 68V p p Inverter Main CN11 pin 11 Black Screen 1V per div 4MSes 3 88V p p 1V per div 4MSes 3 56V p p Inverter Secondary CN103 pin 03 White Screen 1V per div 4MSes 3 56V p p Inverter Secondary CN103 pin 02 Black Screen Inverter Secondary CN103 pin 01 Black or White Screen ...

Page 92: ...3 295V In 4 0V Gnd 1 0V Gnd C 3 3V 4 1 2V 3 3 26V In 5 6 8V 2 11 8V In E Gnd 5 3 3V 4 n c IC8901 1 5V_MEMC 6 6 8V 3 0V Gnd 6 n c 5 n c Pin Regulator 7 15 3V 4 0 8V Q8306 HDMI 7 4 46V 6 2 55V Out 1 0V Gnd 8 15 3V 5 0 76V Pin Det 8 3 3V 7 0 8V 2 1 5V Out 9 n c 6 3 34V PWR On Off2 Ctl B 0V 9 3 3V 8 0V Gnd 3 3 3V In 10 13 47V 7 1 8V In C 3 3V 10 3 3V 11 12 75V 8 1 8V In E Gnd 11 1 2V 12 11 8V 12 Gnd 1...

Page 93: ...47LE8500 47LE8500 Conclusion Conclusion Page Page This concludes the 47LE8500 training session Direct View LCD Direct View LCD L e a n d r o P a l m e i r a ...

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