Toshiba 26AV502U - 26

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 & RoHS Directives that define standards for recycling and reuse of Waste Electrical 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 86ºF to 104ºF (30ºC to 40ºC). 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. 

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 repairs. The parts used in products 
require special safety characteristics such as inflammability; voltage resistance, etc. therefore, use only replacement parts 

1

Содержание 26AV502U - 26" LCD TV

Страница 1: ... 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 2009 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 www7 toshiba com ...

Страница 2: ... of this product The melting temperature of lead free solder is higher than that of leaded solder by 86ºF to 104ºF 30ºC to 40ºC 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 sold...

Страница 3: ...µF 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 µF 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 A...

Страница 4: ...ct can adversely affect the performance Also use caution when handling the polarized screen because it can easily be damaged 4 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 clea...

Страница 5: ...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 genera...

Страница 6: ...Power PCB Main PCB Inverter PCB 32AV502U P801 Lamp Out CN13 Not used in later production CN10 Tuner P803 P802 CN12 CN11 CN3 CN7 CN101 LVDS Alt LVDS 26 in 5 ...

Страница 7: ...3 24V Aud 4 24V Aud 5 Gnd 6 Gnd 7 Gnd 8 12V 9 12V 10 5V 11 5V 12 5V 13 Pwr On 4 3V 14 AC Det 07V 15 Dim 2 to 4V 16 BL On 5V AC In Power Supply In Out Speakers LED IR 1 LED G 2 LED B 3 Gnd 4 3 3V 5 IR 6 5V Manual Key 1 Pwr 2 CH 3 CH 4 V 5 V 6 Menu 7 Source 8 Gnd LVDS Alt LVDS 26 in Side AV In 1 CVBS 2 Gnd 3 Gnd 4 L Aud 5 R Aud Wiring Interconnect 26 32 37AV502U 26 37AV52U Key Pin 1 Flow out in Indi...

Страница 8: ...26 32 37AV502U 26 37AV52U Wiring Interconnect P802 P803 P801 LCD Panel Power Board P802 L V D S I n 7 ...

Страница 9: ...el out Main Board HDMI 1 Composite IN Keypad IR Audio AMP TPA3121D2 I2S out Audio I2S input SIF Tuner_CVBS IF P N LVDS out R_out L_out S PDIF CVBS Y C input Pr Pb Y Audio IN OUT SPDIF OUT 24LC02 Pr Pb Y R L output CVBS UR HD SW BA7657 Audio I2S output MCU WT61P7 24LC02 COLOR STREAM HD1 IN COLOR STREAM HD2 IN ANT CABLE TX RX Service 8 ...

Страница 10: ...801 P801 T101 P4 D204 CY104 CX101 ZD101 CY105 R235 C215 R236 C214 Vcc TH101 R141 C101 R101 Q204 Q203 R219 R214 R237 D206 D208 P4 R113 R112 R114 C115 R136 D106 Q106 D107 D108 R115 Q107 D111 R108 R107 R109 C117 R142 R110 P5 D110 ZD102 D112 P6 D109 P5 P6 R116 R117 R118 R119 C202 R238 C118 FB503 C510 VS102 VS101 C511 Q101 Q102 F101 BD101 LF101 LF101 CY103 CY102 CY101 VA101 R213 U201 C208 R217 R216 PC1...

Страница 11: ...supply on the power supply supply module No Is the Power Good AC Detect level less than 07V at pin 14 of P802 when AC is applied Yes No Suspect a problem with the power supply module Does the secondary 12 volt source appear at pin 8 of P802 when the on off button is pressed No No Suspect a problem with the SYSCON circuit located on the Main module Yes Yes Suspect a problem with the Main module Dea...

Страница 12: ...ES NO Troubleshoot for backlight problelms Is the screen discolored or does it have streaks or dark areas with no signal input NO If the LCD Control Board is available try it If this does not help replace the LCD display panel YES Examples Warranty Authorization required if display is replaced in warranty Go to www7 toshiba com for instructions Check for LVDS activity at CN5 If it is present suspe...

Страница 13: ...ce the Power supply module Is 5VDC present at pin 16 of P802 soon 5 sec after the unit is turned on YES NO If it is available try one or both inverters If this does not help replace the LCD display Warranty Authorization required if display is replaced in warranty Go to www7 toshiba com for instructions Backlight Troubleshooting Replace the Main module 12 ...

Страница 14: ...re on and the input selection is a known good source Will this restore audio Does the power supply generate the audio supply voltages 24 VDC at pins 3 and 4 of P802 when the unit is turned on YES NO Replace the power supply module YES NO Replace the Main module Problem solved No Audio 13 ...

Страница 15: ...t the Toshiba website at www7 toshiba com for the latest update information Factory Mode The factory mode necessary adjustments and update procedures shown below can be accessed in this unit using the supplied remote control transmitter To access the factory mode you must press Left Arrow Exit Enter in sequence on the remote transmitter The mode can be exited by pressing exit or simply turning the...

Страница 16: ... B 37AV502U 39C02051L06 E261 75012771 PC BOARD ASSY IR B 37AV502U 39C02051L07 E300 75012350 LCD PANEL V260B1 L11 E310 75012911 CABLE LVDS FFC 30P G P1 PAD0 65 2 39C02251L06 E320 75012780 POWER CORD 37AV502U 39C02051L03 E330 75012906 SPEAKER ASSY 5W 6OHM 160X40X41 39C02251L12 E340 75012778 H CON SET STW46T MB POW 12V 39C02451L11 E341 75012907 H CON SET STW26T INV POW 14P 39C02251L11 E342 75012924 H...

Страница 17: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...

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