Toshiba 37AV502U - 37" LCD TV Скачать руководство пользователя

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SERVICE MANUAL

LCD Color Television

37A

v.1

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

200

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

Содержание 37AV502U - 37" 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_EN 13 BRT 13 BRT 18 GND 20 GND 14 POWER GOOD 14 POWER GOOD 14 IC 14 IC 19 Rx2 21 TxCLK 15 BL_BR_CNTRL 15 BL_BR_CNTRL 20 Rx2 Side IO board 22 EXT_VBR_B 16 BKLT_EN 16 BKLT_EN Inverter 12P Inverter 12P 21 GND 23 TxCLK 1 24Vinv 1 24Vinv 22 CLK Side IO board 2x3P Side IO board 2x3P 24 DCR_VBR_B 2 24Vinv 2 24Vinv 23 CLK 1 CVBS 1 GND 25 GND 3 24Vinv 3 24Vinv 24 GND 2 GND 2 R 26 LVDS_SEL 4 24Vinv 4 ...

Страница 7: ...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 6 ...

Страница 8: ...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 7 ...

Страница 9: ...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 10: ... 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 De...

Страница 11: ...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 12: ...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 11 ...

Страница 13: ...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 12 ...

Страница 14: ...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 15: ... S2 S4 S4 D102 D103 D101 D105 D104 ZD201 ZD202 D207 D205 FB501 P801 P801 T101 P4 D204 CY104 CX101 ZD101 CY105 R235 C215 R236 C214 Vcc TH101 R141 C101 C102 Q204 Q203 R219 R214 R237 D208 D209 R238 R116 R117 R118 R119 R113 R112 R114 C115 R136 D106 Q106 R115 Q107 D111 R108 R107 R109 C117 R142 R110 P5 P5 P6 D110 ZD102 D112 P6 D109 S5 R239 R240 S5 C118 FB503 C510 C216 VS102 VS101 C511 Q101 Q102 F101 BD1...

Страница 16: ... 75012770 PC BOARD ASSY KEY B 37AV502U 39C02051L06 E261 75012771 PC BOARD ASSY IR B 37AV502U 39C02051L07 E300 75011157 LCD PANEL LC370WXN SAC1 E310 75012777 H CON SET TW37T MB LVDS LGS 39C02051L13 E320 75012780 POWER CORD 37AV502U 39C02051L03 E330 75012773 SPEAKER ASSY 10W 6OHM 37AV502U 39C02051L09 E340 75012774 H CON SET TW37T MB CN11 CN10 39C02051L10 E341 75012775 H CON SET TW37T MB CN12 IR 6 39...

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

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