52XV645U Service Manual
Contents
1. Refer LED Indication for each mode Turn off power of the TV Remove the USB memory from the USB terminal Turn on power of the TV Perform reset of the TV 9 1 Press Menu key MENU is displayed 9 2 Select SETUP Menu 9 3 Select Reset TV and press the ENTER key Reset TV Menu is displayed 9 4 Select YES and press the ENTER key Reset operation starts The TV goes to standby mode after the reset opration is completed Turn on power of the TV Software update is completed2. 3 3 TVM 6 OP_IN RGB SDA 4 i5V1 5V 6 SCLPOWER PANEL INVERTER 40XV645 648U A46XV645 648U 52XV645 648U m le d mE LE EX e n NES 4 JS en ee ee 5 ee ee 4 Plug positioning and orientation on the power supply PCB may vary slightly from model to model but pin outs and plug numbers will remain the same a ee A AA SMART2009 LCD909 V5 Page 2 of 14 1 Power Key 2 ADC In2 3 Gnd 4 ADC In1 Interconnect 40XV645 648U 46XV645 648U 52XV645 648U CN651 CN652 LVDS LVDS 5 12V 37 41 12V Vcc LCD Vcc LCD Main Key Pin 10 Flow gt Out lt In Indicates Standby CN653 To Inv CN91 CN90 CN30 To Spkrs NU GND Inv BL Det 0V lt Dim SW 0 3 3V gt BL On Off 3 3v gt NURON P c Vcc 12V LCD lt Vcc 12V LCD Gnd Gnd Pwr LCD3 3V gt AC Det 3 2V lt Pwr Sig 3 3V gt Pwr Prot 3 2V roe ee Vee M Gnd C Pwr TV RY3 3V gt Gnd CN720 2 Logo Pwr 1 5V CN740 To IR Rec and LEDs a Inverter s Slave not used on some models Master P860 24V 24V 24V 24V Gnd Inv Gnd Inv Gnd Inv Gnd Inv 0 Gnd Inv Power Supply AC In N P801A L Plug positioning and orientation on the power supply PCB
3. may vary slightly from model to model 15 Gnd but pin outs and plug numbers will remain the 14 Gnd same 13 Gnd 12 On Timer LED 3 3V 11 Stand By LED 10 Pwr On LED 3 3V 3 3V TVM IR LED Gnd NU NU 3 3V TVM IR LED 5V1 Gnd IR Out Rmt In LUPO gt QD OE DO XD SMART2009 LCD909 V5 Page 3 of 14 Dead Set No Sound No Picture 40XV645 648U 46XV645 648U 52XV645 648U Dead Set Is 5 VDC present at pin13 of CN90 on the ain module when AC is applied Yes NO Does a 3 3 volt DC level appear at pin 2 of CN91 when the on off button is pressed Yes Suspect a problem with the power supply module the secondary 12 volt source appear at pins 9 10 and 11 of CN90 when the on off button is pressed Yes NO power protect level 3 2 VDC present at pin 1 of CN91 when AC is applied 3 2 volts AC Detect appear at pin 3 of CN91 when power is oressed Suspect a problem with the power supply module Does a blink code appear when the unit is turned on Yes se the blink code chart to help diagnose the problem Over voltage Mode 20 indicates power supply problems and bus line problems Mode 19 indicates a defective main module Suspect a problem with the SYSCON circuit located on the Main module No Suspect a problem with the Main module S
4. not drop the cleaner on the panel Pay attention not to scratch the panel surface 4 Leaving water or other fluids on the panel screen for an extended period of time can result in discoloration or stripes Immediately remove any type of fluid from the screen 5 Glass is used in the panel so do not drop or strike with hard objects Such actions can damage the panel 6 CMOS LSI circuitry is used in the LCD module so avoid damage due to static electricity When handling the module use a wrist ground or anchor ground 7 Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an extended period of time 8 Do not store the LCD module below the temperature conditions described in the specifications Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage v WO ea 10 When transporting the LCD module do not use packing containing epoxy resin amine or silicon resin alcohol or oxim The gas generated by these materials can cause loss of polarity PANEL TCON PE0720 KEY PJ730 iGND CN652 P861 OPEN CN503 10 GND INV OPEN 9 GND INV 3 ITE4P 8 GND INV 7 GND INV 5 ITD4P 6 GND INV 6 TDAN o spaviv 52am o aanv 8iTCIdP Ban 9 ITCLK4N 2 124V INV PE0748 Main 1 24V INV CN91 maitea o 1 POWER PROTECT 1 jPOWER PROTECT HAITBAN O 2 PO
5. Combinations Green Red Green Red Orange G R Orange G R Power ON Mode3 OnTimer is set Program Timer is NOT set is Power ON Mode6 OnTimer is NOT set Program Timer is NOT set Power OFF Standby Power On Mode Fast Mode13 OnTimer is set Program Timer is NOT set Power OFF Standby Power On Mode Fast OnTimer is NOT set Program Timer is NOT set Power OFF Standby Power On Mode Saving Mode15 OnTimer is set Program Timer is NOT set Power OFF Standby C Power On Mode Saving OnTimer is NOT set Program Timer is NOT set Green Blink 3 Booting Transition from Standby to 8 Times On Mode19 o9 For Service Green Blink IIC BUS Error Mode20 x For Service Red Blink Off Power Protect Error F Mode x or Service Off Green Blink Fan Stop Error Mode22 x i d For Sene Orange Blink Back Light Error Mode23 For Service Orange Green SW Upgrade in Progress Mode24 For Service Off SW Upgrade Failed a Mode25 _ or Service Green Off SW Upgrade Successful ADJUSTMENT Service Mode Update of SEINE SOFTWARE S dx Cor qw gs Turn off power of the TV Prepare a USB memory storing the update software data Insert the USB device into the USB terminal at the right side of the TV Turn on power of the TV while holding Menu button on the TV LED indication is displayed as following Mode18 Mode23 Mode25 If update is failed Mode24 is shown
6. ION OF MEMORY DATA After replacing Main board the following initialization is required 1 2 Note Enter Service Mode Select SET ID by pressing CHANNEL or CHANNEL button during display of adjustment menu in Service Mode Change the data to Model ID of the TV set by pressing VOLUME 2 or J While holding RECALL button on Remote Control press CHANNEL AA button on the TV The TV goes to standby mode Turn on power of the TV then the initialization is completed Enter Service Mode and select Version Check Mode Confirm if the model name and MODEL ID is correct If not repeat from 1 again If wrong MODEL ID was set abnormal display might appear ADJUSTMENT Service Mode Self Diagnostic Function 1 Press 9 button on Remote Control during display of adjustment menu in Service Mode The diagnosis will begin to check if interface among IC s is executed properly 2 During diagnosis the following displays are shown Production Self Check TV CPU SW Version 0x00 EEPROM Version 00 Power On Time 00000000 TV Status 00 00 0 Bus Errors Nong Aj i _ 5 IIC BUS status None is normal SCL GN Red indication SCL GND short circuit SDA GND Red indication SDA GND short circuit ADJUSTMENT Service Mode Version Check Mode 1 Press 9 button twice on Remote Control during display of adjustment menu in Service Mode Press cursor button and then the version of
7. MART2009 LCD909 V5 Page 4 of 14 40XV645 648U 46XV645 648U 52XV645 648U No or distorted Video If the LCD Control Board is available try it If this does not help Examples No or distorted video screen discolored or have streaks as shown in the example or are dark areas present Does the back light function normally when the unit is turned on YES NO is pressed on the receiver or remote is the on screen display clear ang YES NO Troubleshoot for backlight problelms Replace the Main Module Using the power distribution diagram are the voltage normal at pins 9 10 and 11 of CN90 and pins 7 and 8 of CN91 This signal viewed from N the twisted cable pairs at the LVDS connectors NO YES while referencing cold ground Check for LVDS activity at CN651 and CN652 If it is present suspect a problem with the display control board Tcon If it is not present replace the main PCB Suspect the power supply module SMART2009 LCD909 V5 Page 5 of 14 40XV645 648U 46XV645 648U 52XV645 648U Backlight roubleshooting Backlight Troubleshooting the back light function and then turn off or is there a dark horizontal area on the screen NO YES If it is available try one or both inverters If this does not help replace the LCD display o
8. TOSHIBA SERVICE MANUAL LCD Color Television 52XV645U Ver 1 00 LEAD FREE SOLDER This product is manufactured using lead free solder as a part of a movement within the consumer products industry at large to be environmentally responsible Lead free solder must be used in the servicing and repair of this product WARNING This product is manufactured using lead free solder DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT The melting temperature of lead free solder is higher than that of leaded solder by 86 F to 104 F 30 C to 40 C Use of a soldering iron designed for lead based solders to repair product made with lead free solder may result in damage to the component and or PCB being soldered Great care should be made to ensure high quality soldering when servicing this product especially when soldering large components through hole pins and on PCBs as the level of heat required to melt lead free solder is high SAFETY INSTRUCTION WARNING BEFORE SERVICING THIS CHASSIS READ THE SAFETY PRECAUTION AND PRODUCT SAFETY NOTICE INSTRUCTIONS BELOW Safety Precaution WARNING SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED BEFORE SERVICING THIS CHASSIS 1 Anisolation transformer should be connected in the power line between the receiver and the AC line before any service is performed on the rec
9. WER SIG 2 POWER SIG 3 AC DETECT 4 POWER LCD 4 POWER LCD PE0702 wi 5 GND 6 Power aitc emes 7 H2V LCD 7M2VICD 8 12VLCD 8 M2VLCD im mni 7 112 LCD 22s 8 M2VLCD m sir _ mie moe O CN90 Y 5 TTIGND SW mieno 2 cND 2Gb gt mico o o mcn 48V O a nev O E 290P emee 524V INB 524V INB Boon 1 sojExw 2 Bieno O sm O 7 iPOWER 7 POWERTV 2 32 Batekin eny o o Baien O mona O mona o sicip mna o mnv o Bec eeno 2 60 2 60 1351 Beite Batane _ o moman omo CN30 meno nmo RAMP 42 OPC ONOFF 2 R A3 BITSEL 3 AMP O PWM OUT 4 AMP AC cable A5 LVDS SEL 6iNC Oo CN72 47 i5060 CN102 aov o OPEN SDIGND CN740 5ste ZIRO B200 Logo Illumination o 5v1 V 5 33 TVMM 6 INRGB SDA 7 RGBSCL 8 GND 10 ON LED 1210n Timer CN701 13 Program timer R OPEN 5iHDDLED PE0721 LED PJ740 PE0721 RMT PJ741 X 1513 3
10. eiver 2 Always disconnect the power plug before any disassembling of the product It may result in electrical shock 3 When replacing a chassis in the cabinet always be certain that all the protective devices are put back in place such as nonmetallic control knobs insulating covers shields isolation resistor capacitor network etc 4 Always keep tools components of the product etc away from the children These items may cause injury to children 5 Depending on the model use an isolation transformer or wear suitable gloves when servicing with the power on and disconnect the power plug to avoid electrical shock when replacing parts In some cases alternating current is also impressed in the chassis so electrical shock is possible if the chassis is contacted with the power on 6 Always use the replacement parts specified for the particular model when making repairs The parts used in products require special safety characteristics such as inflammability voltage resistance etc therefore use only replacement parts that have these same characteristics Use only the specified parts when the mark is indicated in the circuit diagram or parts list 7 Parts mounting and routing dressing of wirings should be the same as that used originally For safety purposes insulating materials such as isolation tube or tape are sometimes used and printed circuit boards are sometimes mounted floating Also make sure that wirings is routed a
11. f P860 and 12VDC at pins 7 and 8 of CN91 present while the unit is on Replace the NO Is 3 3VDC present at pin 1 of P860 and P861 Do both s voltages return when AC is Marc AE reapplied and the unit is turned on after the unit is turned on YES NO Replace the Replace the display Main module SMART2009 LCD909 V5 Page 6 of 14 40XV645 648U 46XV645 648U 52XV645 648U No Sound Using the remote or the manual keyboard access the audio menu to assure the speakers are on and the input selection is a Known good source YES NO Problem solved Does the power supply generate the audio supply voltages 18 VDC at pins 3 and 4 of CN90 when the unit is turned on YES NO Replace the Replace the power supply module Main module SMART2009 LCD909 V5 Page 7 of 14 ADJUSTMENT Service Mode Entering to Service Mode 1 Press MUTE button twice on the Remote Control MUTE service Mode display 2 Press MUTE button again and hold button down 3 While holding the MUTE button press MENU button on the TV ADJUSTMENT Service Mode Displaying Adjustment Menu Press MENU button on the TV Service Mode Press Press Adjustment Mode ADJUSTMENT Service Mode Key Function in Service Mode The following key entry during display of adjustment menu provides special funct
12. ions Test signal selection Selection of the adjustment items Change of the data value Adjustment menu mode ON OFF RCUT selection GCUT selection BCUT selection CNTX selection COLC selection UVTT selection Self diagnostic display ON OFF ADJUSTMENT Service Mode Selecting the Adjusting Every pressing of CHANNEL button in Service Mode changes the adjustment items in the order of table below button for reverse order SETTING amp ADJUSTING DATA SERVICE MODE ADJUSTING ITEMS AND DATA IN SERVICE MODE 40XV645U 46XV645U 52XV645U Name of adjustment SET ID MODEL ID b 5 8 52 00H 00H 7CH 78H 86H 74H A4H 7BH 7FH 00H 00H EOH 6BH s aexvedsu o a Seine Data b TV Micro Data ADJUSTMENT Service Mode Adjusting the Data Pressing of VOLUME 21 button will change the value of data in the range from to FFH The variable range depends on the adjusting item Service Mode Setting Panel Option and Model ID Data Panel Maker opa OPT3 OPT5 Model ID TOP Running change Running ECT E SAMSUNG EOH 52 SAMSUNG Exit from Service Mode Pressing POWER button to turn off the TV once ADJUSTMENT Service Mode Flow Chart of Replacing Main Board Initalize memory data Enter Service Mode and select version check made ADJUSTMENT Service Mode INITIALIZAT
13. main MPU will begin to check 2 During Version Check the following displays are shown Production Main 1 2 0x00 3 Image Verification File 4 Boot Code Version AAA YYYYIMMIDD 5 Core SW Version 0 0 0 0 6 Seine SW Version 0 0 0 0 TV Micro SW Version 00 B5 Micro EEPROM Version 00 9 Pass Pass Pass Pass 10 IIT IH 11 Smee p 12 EE aloes Explanation Data Format 1 TV model name Display model name strings 2 TV model ID value Display 1 byte data Hex 3 Image Verification File Display directory path and file name of Image Verification file Boot Code version strings Display version strings Core SW version value Display format is decimal Seine SW Version Display format is decimal 7 Version information of TV Display 1 byte data MICRO Version information of TV Display 1 byte data MICRO EEPROM EDID Checksum Pass Fail Result Listed for HDMI 1 4 left to right Global Data Version Display version strings LCD Panel Opt Panel Option OPT4 Data Display 1 byte data Please see page 8 SETTING PANEL OPTION and MODEL ID DATA 0 1 C1 gt 5 Q D 12 Factory Test Status Optional Data Bits that can be used by factory ADJUSTMENT Service Mode LED Indication The green and red LED lights on the TV indicate the TV s status as described below TV front LED1 LED2 MM TV Conditions
14. nd clamped to avoid parts that generate heat and which use high voltage Always follow the manufactured wiring routes dressings 8 Always ensure that all internal wirings are in accordance before re assembling the external casing after a repairing completed Do not allow internal wiring to be pinched by cabinets panels etc Any error in reassembly or wiring can result in electrical leakage flame etc and may be hazardous 9 NEVER remodel the product in any way Remodeling can result in improper operation malfunction or electrical leakage and flame which may be hazardous 10 Always perform an AC leakage current checking on the exposed metallic parts of the cabinet such as antennas terminals screw heads metal overlays control shafts and etc to be sure that the set is safe to operate without any dangerous of electrical shocks before returning the set to the customer 11 The leakage current checking After completing the work measure the leakage current to prevent an electrical shock e Plug the AC line cord directly into a 120V AC outlet Do not use an isolation transformer for this check e Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following manner Connect a 1500 ohm 10 watt resistor paralleled by a 0 15 uF AC type capacitor between a known good earth ground water pipe conduit etc and the exposed metallic parts one at a time Measure the AC voltage across the combination of 1500 ohm
15. resistor and 0 15 uF capacitor Reverse the AC plug at the AC outlet and repeat AC voltage measurements for each exposed metallic part Voltage measured must not exceed 0 3 volts rms This corresponds to 0 2 milliamp AC Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately AC VOLTMETER Place this probe on each exposed Good earth ground metallic part such as a water pipe conduit etc 1500 ohm 10 watt SAFETY INSTRUCTION Product Safety Notice Many electrical and mechanical parts in this chassis have special safety related characteristics These characteristics are often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage wattage etc Replacement parts which have these special safety characteristics are identified in this manual and its supplements electrical components having such features are identified by the international hazard symbols on the schematic diagram and the parts list Before replacing any of these components read the parts list in this manual carefully The use of substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create electrical shock fire or other hazards SAFETY INSTRUCTION Handling the LCD Module Safety Precaution In the event that the screen is damaged or the liquid c
16. rystal fluid leaks do not breathe in or drink this fluid Also never touch this fluid Such actions could cause toxicity or skin irritation If this fluid should enter the mouth rinse the mouth thoroughly with water If the fluid should contact the skin or clothing wipe off with alcohol etc and rinse thoroughly with water If the fluid should enter the eyes immediately rinse the eyes thoroughly with running water Precautions for Handling the LCD Module CAUTION The metal edges of the LCD module are sharp handle it with care The LCD module can easily be damaged during disassembly or reassembly therefore always observe the following precautions when handling the module 1 When attaching the LCD module to the LCD cover position it appropriately and fasten at the position where the display can be viewed most conveniently OK 5 2 Carefully align the holes at all four corners of the LCD module with the corresponding holes in the LCD cover and fasten with screws Do not strongly push on the module because any impact can adversely affect the performance Also use caution when handling the polarized screen because it can easily be damaged 3 Ifthe panel surface becomes soiled wipe with cotton or a soft cloth If this does not remove the soiling breathe on the surface and then wipe again If the panel surface is extremely solied use a CRT cleaner as a cleaner Wipe off the panel surface by drop the cleaner on the cloth Do
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