LCD Color Television
Contents
1. Suspect the S power PCB Do any LEDs blink after the on off switch is pressed No Yes Is 3 volts present at Pin 9 of P810 as soon as AC is applied Suspect the ves P power PCB Use the LED blink chart to help diagnose the problem Suspect the main Yes PCB 2 9 volts present at pin 7 of P810 as soon as on off is pressed Suspect the main PCB TOSHIBA 32 37CV510 32 37 42RV530 535U Picture Problems Contact Toshiba at www 7 tacp com for 46RV530 535U 52RV530 535U warrantv authorization If the LCD Control Board is available trv it If this does not help replace the LCD display panel Picture Problems Examples Does the back light function normally when the unit is turned on YES or does it have streaks or dark areas with no signal input NO the input button is pressed on the receiver or remote is the on screen display clear and normal NO YES Using an oscilloscope can an LVDS signal be detected at CN60 on the Main PCB Troubleshoot for backlight problelms YES Replace the Main Module P 46 and 52 inch RV models contain a P power supply module Suspect the LCD This signal viewed from LVDS connector referencing cold ground Control board 32 3 CV510 322. 1 Set VOLUME to minimum and press MUTE button twice on the remote control 2 Press MUTE button again and hold button down Service Mode display 3 While holding the MUTE button press MENU button on TV set Selecting the Adjusting Item Every pressing of CH de or W button in the service mode changes the adjustment items Adjusting the Data Pressing of VOLUME Mor WP button will change the value of data in the range from OOH to FFH The variable range depends on the adjusting item Exiting Service Mode Pressing POWER button to turn off the TV once Setting Panel Option Data and SET ID Data 1 Panel option data is subject to OP4 and OP5 Enter to service mode and select menu of OP4 or OP5 by pressing CH or cH W during display of adjustment menu After selecting OPT4 or OPT5 press aff or A to set OPT4 or OPT5 value as table below Zi Whenever using new MAIN PC board to the set set the SET ID data according to panel option data RV530U 46 Samsung AH 1 60H 00H esH Exit from Service Mode Pressing POWER button to turn off the TV once Firmware Update Process Updating this chassis family is accomplished using an SD card furnished by Toshiba With the unit operating insert the card into the card slot labeled Service only located on either the side or back of the instrument After the card is inserted simply follow the step by step update instructions displayed on the screen LED BLINK
3. r li i Freq select LL 74 25M LH 82M i KA NI H A KUN 2M L DDR2 AVSw MTS SDRAM TV Mi APRO D AMP Controller 5V ji K icro IV Co n tro lle r LEDx2 k Debue EA een y qe PA BA Update SExt 120 lt gt 120 4 Uni Sienal A Bus LOD Pan e Modu le D A PCM1754 Audio out Fixed OO Op tical out y Lim l l l l l l l l Po Wer POB 46RV530U Power Distribution and Plug Layout 1 24V 2 24V 3 24V 4 24V 5 24V l 6 GND 24V Inverter Supplies END 8 GND 9 GND LVDS Inverter 10 GND EA ae AO lees CN60 CN61 2 5V1 lt 3 GND AA P860 CN746 A TAN Charis 5 12V lt 6 12V lt 1 GND 7 GND 2 GND 8 NC 3 GND 9 NC 4 5V1 gt 10 GND 5 5V1 gt 11 NC 6 5V1 gt 12 NC P812A 7 GND 13 18V Aud lt i P812B g GND 14 Aud GND 9 GND Main CN90 S Power P Power P810A 4 12vLco lt 2 12V LCD lt 3 GND CN91 Standby voltages El see RED l 3 2V gt are in blue italic 6 NC 7 2 9V AC Det lt 8 3 2V PWR Sig gt 9 3V PWR Prot lt LED IR CN745 Sees AC In P803A TOSHIBA Dead 46 52RV530U Set Dead Set Yes 3 2 volts appear at pin 8 of P810 on the power board when on No 24 volts appear at Yes pin 1 5 of P860 on the power board when on off is pressed Yes 5 volts present at pin 2 of P811 as soon as AC is applied
4. 37 42RV530 535U TOS H l BA 46RV530 535U Backlight Problems 52RV530 535U Backlight Problems NO Does the back light YES function and then turn off If itis available try one or both CCF inverters If this does not help replace the LCD display 24 VDC present at pins 1 through 5 of P860 and P861 when the unit is turned NO P 46 and 52 inch RV models contain a P power supply module Replace the P Power supply module Contact Toshiba at www 7 tacp com for warranty authorization Is 12VDC present at pins 1 and 2 of P810A when the unit is turned on NO YES If itis available replace the display T Control PCB If it is not available replace the LCD display kkk LVDS connector CN6O0 is unplugged Is 12VDC present at pins 1 and 2 of P810A when the unit is turned Is 3 2VDC present at pin 5 of P810A when the unit is turned on YES NO Suspect the main module TOSHIBA Sound Problems 32 3 CV510 32 37 42RV530 535U 46RV530 535U 52RV530 535U Sound Problems Distorted No Sound Is there no sound or is the audio distorted If the input selection is changed does audio appear YES Problem Is 18VDC present at pin 13 of P811A when the unit is turned on YES solved NO Suspect the S power supply module
5. CODES The green and yellow LED lights on the TV at the bottom center of the TV indicate the TV s status as described below Note If the TV loses A C power e g a power outage occurs or the power cord is unplugged when power is restored the yellow LED will blink while the TV is booting until the remote control is usable This is normal and is not a sign of malfunction TY front DISC POWER Yelow LED Green LED POWER OFF AC OFF 0n o lO BUS Error Ba O NGA Protect Detection Fast Blink O Seine Booting do Blink 3 Times Upgrade In Progress GF gt Upgrade Successful eO O Upgrade Failed YO O O HDMi Side Wideo1 CO Video 2 Side L Com ponenti a Com ponent KI Videot KU Video 2 Side L Com ponenti me Component2 HDMi Ra B Digitals An alo e Tuner ID IR RK LED RMPOS g D EJ f Y fu MTS BTSC HDMi Connector ll SD Mem ory Cara i Panel Power m OffiHOn i KX POWER_LOD TV Micro Bac klight On OKH On l ey eee ee ee controller 2 2 TX49 HA PWM EniH Enablej Graphic Plane Panel Power U Pu M ALLER ANA al a Me Port Select HPD Re set DINERS Capture Buf H PD Re set for Porta EDID ROM write CTL DS Low Color ShiftiH On L OFP f l G B R HD AVD GBRHV YCbCr YC CVBS A gt EDID ROMtSide port Display Buf ID a EA MuTE 2M
6. P811A is located on the S power supply in the 46 and 52inch models Replace the Main module PARTS LIST Precaution WARNING BEFORE SERVICING THIS CHASSIS READ THE X RAY RADIATION PRECAUTION FOR DIRECT VIEW CTV ONLY SAFETY PRECAUTION AND PRODUCT SAFETY NOTICE OF THIS MANUAL CAUTION The international hazard symbols in the schematic diagram and the parts list designate components which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or specified in the parts list The mounting position of replacements is to be identical with originals Before replacing any of these components read carefully the SAFETY PRECAUTION and PRODUCT SAFETY NOTICE Do not degrade the safety of the receiver through improper servicing Note e The part number must be used when ordering parts in order to assist in processing be sure to include the Model number and Description B001 75011245 DISPLAY LTA460HB07 LCD Panel PC BOARD ASSY PE0541A 46RV530U MAIN Contact Toshiba at www tacp com for warranty authorization TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN
7. 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 as specified in the parts list may create electrical shock fire or other hazards SAFETY INSTRUCTION WARNING 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 In the event that the screen is damaged or the liquid crystal fluid leaks do not breathe in drink or 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 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 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 w
8. TOSHIBA SERVICE MANUAL LCD Color Television 46RV530U Rev 1 For Technical Bulletins Technical Tips or other information regarding the service of this model visit the Toshiba America Consumer Products National Service Division website at www toshiba com This model is classified as a green product 1 as indicated by the underlined serial number This Service Manual describes replacement parts for the green product When repairing this green product use the part s described in this manual and lead free solder 2 For 1 and 2 refer to GREEN PRODUCT PROCUREMENT and LEAD FREE SOLDER TOSHIBA CORPORATION 2008 IMPORTANT NOTICE WARNING Do not modify or alter the information or data provided herein without prior written consent by Toshiba Toshiba shall not be liable to anybody for any damages losses expenses or costs if any incurred in connection with or as a result of such modification or alteration THE INFORMATION OR DATA HEREIN SHALL BE PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Toshiba shall not be liable for any damages losses expenses or costs if any incurred in connection with or as a result of use of any information or data provided herein GREEN PRODUCT PROCUREMENT The EC is actively promoting the WEEE amp RoHS Directives that define standards for recycling and reuse of Waste Elect
9. hen handling the polarized screen because it can easily be damaged If the 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 soiled wipe the panel surface with CRT cleaner sprayed onto the cloth Do not spray the cleaner on the panel Pay attention not to scratch the panel surface Leaving water or other fluids on the panel for an extended period of time can result in discoloration or stripes Immediately remove any type of fluid from the screen Glass is used in the panel construction Damage can occur if dropped or struck with hard objects 7 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 8 Donot expose the LCD module to direct sunlight or strong ultraviolet rays for extended periods 9 Do not store the LCD module below the temperature conditions described in the specifications Doing so could result in freezing of the liquid crystal loss of resilience or other damage 10 Do not disassemble the LCD module Such actions could result in improper operation 11 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 ad Entering Service Mode
10. mpleting 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 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 milliamps AC Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately AC VOLTMETER 0 15uF Place this probe on each exposed Good earth ground metallic part such as a water pipe conduit etc 1500 ohm 10 watt Product Safety Notice Many electrical and mechanical parts in this chassis have special safety related characteristics These characteristics are often overlooked in a visual inspection 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
11. ough 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 An isolation transformer should be connected in the power line between the receiver and the AC line before any service is performed on the receiver 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 product components etc away from children as these items may cause injury 5 Depending on the model use an isolation transformer or wear suitable gloves when servicing with the power on 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 repair
12. rical and Electronic Equipment and for the Restriction of the use of certain Hazardous Substances From July 1 2006 the RoHS Directive will prohibit any marketing of new products containing the restricted substances Increasing attention is given to issues related to the global environmental Toshiba Corporation recognizes environmental protection as a key management tasks and is doing its utmost to enhance and improve the quality and scope of its environmental activities In line with this Toshiba proactively promotes Green Procurement and seeks to purchase and use products parts and materials that have low environmental impacts Green procurement of parts is not only confined to manufacture The same green parts used in manufacture must also be used as replacement parts LEAD FREE SOLDER WARNING 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 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 thr
13. s 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 A mark is indicated in the circuit diagram or parts list 7 Part mounting and wire routing should be the same as that used originally For safety purposes insulating materials such as isolation tubes or tape are sometimes used and printed circuit boards are sometimes mounted floating Also make sure that wiring is routed and clamped to avoid parts that generate heat or use high voltage Always follow the manufactures wiring routes dressings 8 Always ensure that all internal wirings are in accordance before re assembling the external casing after a repair is 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 electrical leakage or flame which may be hazardous 10 Always perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas terminals screw heads metal overlays control shafts etc to be sure that the set is safe to operate without any danger of electrical shock before returning the set to the customer 11 To check leakage current After co
Download Pdf Manuals
Related Search