Toshiba 40RV52U, Service Manual

Page 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 ...

Page 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 solde...

Page 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 ...

Page 4: ...t 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 clean...

Page 5: ...o 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 generat...

Page 6: ...Main Board IR B Power Board LOGO CN5 CN10 CN8 CN3 P803 P802 CN1 CN2 Inverter Board Speaker Speaker CN9 CN11 Panel T Com P804 C0N11 KEY_IO B CN1 CN7 AC in 5 ...

Page 7: ...Power PCB Main PCB Display T Con P803 to Inverter P802 P801 AC In CN5 LVDS CN11 CN10 CN9 CN3 CN8 Cable to Side Front AV 6 ...

Page 8: ...V Panel Pwr 10 5V 11 5V 12 5V 13 Pwr On Enable 4 3V 14 AC Det PWR Good 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 Side AV In 1 CVBS 2 Gnd 3 Gnd 4 L Aud 5 R Aud Wiring Interconnect 40RV52U 40RV525U 46RV525U Key Pin 1 Flow out in Indicates Standby P 8 0 4 P804 u...

Page 9: ...9 Panel power 9 GND 9 GND 14 RO 2 N 3 GND 3 GND 16 GND 10 5V_IN 10 5V_IN 10 GND 10 GND 15 RO 2 P 4 L 4 L 17 LVDS_D1E_N 11 5V_IN 11 5V_IN 11 NC 11 NC 16 GND 5 R 5 R 18 GND 12 5V_IN 12 5V_IN 12 Backlight on off 12 Backlight on off 17 ROCLK 19 GND 13 POWER_EN 13 POWER_EN 13 Dimming Control 13 Dimming Control 18 ROCLK 20 GND 14 POWER GOOD 14 POWER GOOD 14 NC 14 NC 19 GND 21 LVDS_CE_P 15 VBR_OUT 15 VBR...

Page 10: ...9 ...

Page 11: ...olt supply on the power 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 Dead S...

Page 12: ...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 suspect ...

Page 13: ...ule Is 5VDC present at pin 16 of P802 and 12 VDC present at pins 2 4 6 and 8 of CN5 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 ...

Page 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 ...

Page 15: ... is accomplished via a USB port located on the rear of the unit It is designated as Service and is located between the HDMI and PC audio input jacks Visit the Toshiba website at www7 toshiba com for the latest update information 2 Firmware Update USB Port 14 ...

Page 16: ...15 ...

Page 17: ...02U 39C02051L06 E261 75013348 PC BOARD ASSY IR B VTV IR3707 STW37TG 39C01A51L12 E300 75013346 LCD PANEL LTA400HA07 40RV525U E310 75013353 H CON SET TX40T MB LVDS SAM 39C01A51L02 E320 75013354 POWER CORD SP12X1 8MXSR119X22 39C01A51L11 E330 75012773 SPEAKER ASSY 10W 6OHM 37AV502U 39C02051L09 E340 75012778 H CON SET STW46T MB POW 12V 39C02451L11 E341 75013369 H CON SET STX46T INV POW P803 39C01D51L07...

Page 18: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...