Toshiba Regza 52XV645U Service Manual Download Page 10 | Manualshive

Page: 10 / 27

background image

T-Con

Main PCB

Power Supply PCB

CN652

LVDS

CN651

LVDS

CN730

CN653

CN91

CN90

CN30

CN720

CN740

PJ90

PJ91

P801A

K

e
y

b
o

a

r

d

P860

P861

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.

SMART2009-LCD909-V5 Page 2 of 14

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Summary of Contents for Regza 52XV645U

Page 1: ...SERVICE MANUAL LCD Color Television 52XV645U Ver 1 00 ...

Page 2: ...R 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 solder...

Page 3: ...lectrical 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 on...

Page 4: ...l shock Plug the AC line cord directly into a 120V AC outlet Do not use an isolation transformer for this check 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 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 vol...

Page 5: ...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 th...

Page 6: ...r 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 2 Ca...

Page 7: ... 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 ...

Page 8: ...ifications Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage 9 Do not disassemble the LCD module Such actions could result in improper operation 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 ...

Page 9: ... TCLK3N 1 GND 1 GND 26 GND 26 GND 2 GND 2 GND 27 TE1P 27 TC3P 3 18V 3 18V 28 TE1N 28 TC3N 4 18V 4 18V 29 TD1P 29 TB3P 5 24V_LNB 5 24V_LNB 30 TD1N 30 TB3N 6 GND 6 GND 31 GND 31 TA3P 7 POWER_TV 7 POWER_TV 32 TCLK1P 32 TA3N 8 GND 8 GND 33 TCLK1N 33 GND 9 12V 9 12V 34 GND 34 GND 10 12V 10 12V 35 TC1P 35 GND 11 12V 11 12V 36 TC1N 36 GND 12 GND 12 GND 37 TB1P 37 VLCD 13 5V1 13 5V1 38 TB1N 38 VLCD 14 GND...

Page 10: ...730 CN653 CN91 CN90 CN30 CN720 CN740 PJ90 PJ91 P801A K e y b o a r d P860 P861 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 SMART2009 LCD909 V5 Page 2 of 14 ...

Page 11: ... BL On Off 3 3v 4 L Amp 3 L Amp 2 R Amp 1 R Amp 2 On Off 1 VCC 5V 1 Power Key 2 ADC In2 3 Gnd 4 ADC In1 1 5 12V Vcc LCD 37 41 12V Vcc LCD 1 24V 2 24V 3 24V 4 24V 5 24V 6 Gnd Inv 7 Gnd Inv 8 Gnd Inv 9 Gnd Inv 10 Gnd Inv Key Pin 1 Flow Out In Slave Master Slave not used on some models P860 P861 Inverter s 15 Gnd 14 Gnd 13 Gnd 12 On Timer LED 3 3V 11 Stand By LED 10 Pwr On LED 3 3V 9 3 3V TVM IR LED ...

Page 12: ... source appear at pins 9 10 and 11 of CN90 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 Dead Set No Sound No Picture Does 3 2 volts AC Detect appear at pin 3 of CN91 when power is pressed Yes No Does a blink code appear when the unit is turned on Yes No Use the blink code chart to help di...

Page 13: ...unit is turned on YES NO Troubleshoot for backlight problelms Is the screen discolored or have streaks as shown in the example or are dark areas present NO If the LCD Control Board is available try it If this does not help replace the LCD display panel YES Examples 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...

Page 14: ...upply module YES NO If it is available try one or both inverters If this does not help replace the LCD display Backlight Troubleshooting Replace the Main module Is 3 3VDC present at pin 1 of CN653 shortly 5 sec after the unit is turned on Replace the display Remove AC and unplug the LVDS cable s as well as P860 and P861 Do both voltages return when AC is reapplied and the unit is turned on YES NO ...

Page 15: ...nput selection is a known good source Will this restore audio 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 power supply module YES NO Replace the Main module Problem solved No Audio SMART2009 LCD909 V5 Page 7 of 14 ...

Page 16: ...e Entering to Service Mode ADJUSTMENT 1 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 the TV ...

Page 17: ...Service Mode Displaying Adjustment Menu Press MENU button on the TV ADJUSTMENT Service Mode Press Press Adjustment Mode ...

Page 18: ...tion button on Remote Selection of the adjustment items Channel on TV or Remote Change of the data value Volume on TV or Remote Adjustment menu mode ON OFF MENU button on TV RCUT selection 1 button GCUT selection 2 button BCUT selection 3 button CNTX selection 4 button COLC selection 5 button UVTT selection 6 button Self diagnostic display ON OFF 9 button ...

Page 19: ... 46XV645U 52XV645U R CUT R CUTOFF 0FH 0FH 0FH a G CUT G CUTOFF 00H 00H 00H a B CUT B CUTOFF 00H 00H 00H a R DRV R DRIVE 7CH 7CH 7CH a G DRV G DRIVE 78H 78H 78H a B DRV B DRIVE 86H 86H 86H a BRTC BRIGHTNESS CENTER 74H 74H 74H a COLC COLOR CENTER A4H A4H A4H a UVTT BASE BAND TINT 7BH 7BH 7BH a CNTX CONTRAST MAX 7FH 7FH 7FH a OPT1 TV SET OPTION 1 00H 00H 00H b OPT2 TV SET OPTION 2 00H 00H 00H b OPT3 ...

Page 20: ...e depends on the adjusting item ADJUSTMENT Service Mode Setting Panel Option and Model ID Data Model Size Panel Maker OPT4 OPT3 OPT5 Model ID TOP Running change TOP Running change XV645U 40 SAMSUNG 6EH E0H 00H 8CH 46 SAMSUNG 6AH E0H 00H 8DH 52 SAMSUNG 6BH E0H 00H 8EH Exit from Service Mode Pressing POWER button to turn off the TV once ...

Page 21: ...Service Mode Flow Chart of Replacing Main Board ADJUSTMENT ...

Page 22: ... 3 Change the data to Model ID of the TV set by pressing VOLUME or 4 While holding RECALL button on Remote Control press CHANNEL button on the TV The TV goes to standby mode 5 Turn on power of the TV then the initialization is completed 6 Enter Service Mode and select Version Check Mode Confirm if the model name and MODEL ID is correct If not repeat from 1 again Note If wrong MODEL ID was set abno...

Page 23: ... During diagnosis the following displays are shown ADJUSTMENT Explanation Data Format 1 Version information of TV MICRO Display 1 byte data 2 Version information of TV MICRO EEPROM Display 1 byte data 3 Total brightness hour of TV Display 4 bytes data 4 V MICRO System status not used 5 IIC BUS status None is normal SCL GN Red indication SCL GND short circuit SDA GND Red indication SDA GND short ci...

Page 24: ...rectory path and file name of Image Verification file 4 Boot Code version strings Display version strings 5 Core SW version value Display format is decimal 6 Seine SW Version Display format is decimal 7 Version information of TV MICRO Display 1 byte data 8 Version information of TV MICRO EEPROM Display 1 byte data 9 EDID Checksum Pass Fail Result Listed for HDMI 1 4 left to right 10 Global Data Ve...

Page 25: ...am Timer is NOT set Mode6 Green Off Power ON OnTimer is NOT set Program Timer is NOT set Mode13 Orange Green Power OFF Standby Power On Mode Fast OnTimer is set Program Timer is NOT set Mode14 Orange Off Power OFF Standby Power On Mode Fast OnTimer is NOT set Program Timer is NOT set Mode15 Off Green Power OFF Standby Power On Mode Saving OnTimer is set Program Timer is NOT set Mode16 Off Off Powe...

Page 26: ... Error Mode20 Red Blink Off For Service Power Protect Error Mode21 Off Green Blink For Service Fan Stop Error Mode22 Orange Blink Off For Service Back Light Error Mode23 Orange Green For Service SW Upgrade in Progress Mode24 Red Off For Service SW Upgrade Failed Mode25 Green Off For Service SW Upgrade Successful ...

Page 27: ... update is failed Mode24 is shown Refer LED Indication for each mode 6 Turn off power of the TV 7 Remove the USB memory from the USB terminal 8 Turn on power of the TV 9 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 10 The TV goes...

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