Toshiba Regza 40RF350U Service Manual Download | Manualshive

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Summary of Contents for Regza 40RF350U

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: ...ng the MUTE button press MENU button on TV set Selecting the Adjusting Item Every pressing of CH or button in the service mode changes the adjustment items Adjusting the Data Pressing of VOLUME or button will change the value of data in the range from 00H to FFH The variable range depends on the adjusting item Exiting Service Mode Press the POWER button once to turn off the TV 5 5 ...

Page 7: ... of the TV indicate the TV s status as described below RF350U Blue Yellow Green MODE LED LED LED POWER OFF POWER OFF Standby POWER ON Quick Start Mode IIC BUS Error Slow Blink Power Protection Detection Quick Blink Booting 3 Blinks Upgrade in progress Upgrade successful Upgrade failed 6 ...

Page 8: ...U02A LOW B U03A AV TERM U04A Digital U01A POWER U03E ILLUMINATION U03C LED IR PATH U03B FRONT AV U03D Key 7 ...

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Page 10: ...tandby Voltages Red Indicates Switched Voltages Main Power Low B Tuner AV Other Seine 8 10 12 8 10 12 CN71 CN71 Cr Cb Y Analog Video to Seine Fuses MAIN POWER PCB F801 8A AC IN 23144319 F880 5A MAIN PRI 23144715 F882 1A 40V 23144708 F883 5A 18V 23144382 F884 5A 12V 23144715 F885 5A 6V 23144715 Indicates Signal Flow Direction 10 11 10 11 Analog Audio CN70 CN70 R L 5 32V 1 2 8 12 6 9 5 CN61 7P 5V on...

Page 11: ...w B supply circuit Is 5VDC present at pin 12 of P811 with the unit plugged in No Yes Suspect the main power supply then the Low B supply circuit Suspect the system control SYSCON circuit Yes Use the LED blink chart to help locate the problem Suspect the main power supply circuit Dead set no sound or picture 2007 Toshiba America Consumer Products LLC SMART200706_20Q1 1 0 Page 3 of 8 SMART200706_Ver...

Page 12: ...terconnect diagram and checking the Y Cb Cr signals at plug CN71 They will be missing or distorted YES Suspect the Low B module NO No or distorted video Does the back light function normally when the unit is turned on YES NO Is the screen discolored or does it have streaks or dark areas with no signal input NO Replace the LCD display panel YES Examples Warranty Concession required for LCD panel re...

Page 13: ...e Low B power supply Is 3 3 VDC present at pin 18 of P811 shortly after the unit is turned on YES Replace the SYSCON section NO If it is available try the CCF inverter If this does not help replace the LCD display Warranty Concession required for LCD panel replacement Digital photo may be requested Contact Technical Support 2007 Toshiba America Consumer Products LLC SMART200706_20Q1 1 0 Page 5 of ...

Page 14: ...CN90 NO YES Suspect the digital module This can be confirmed by using the wiring interconnect diagram and an oscilloscope and checking the right and left audio signals at pins 10 and 11 of CN70 They will be missing or distorted No or distorted Audio Using an oscilloscope are the selected audio signals at pins 14 and 15 of CN70 normal NO YES 2007 Toshiba America Consumer Products LLC SMART200706_20...

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Page 22: ...Stand Exploded View A425 A426 A427 A428 A429 21 ...

Page 23: ...0 STAND WRENCH 45X160 B001 75012177 DISPLAY G7SEC40SNB60 LTA400HA05 K902 75006721 REMOCON HAND UNIT CT 90276 MZ01 75008703 WIRE HARNESS 40SNB LVDS P801 75002678 POWER CORD INQ2682 1 U01A 75008573 PWU POWER PE0450A1 U02A 75008574 PWU LOWB PE0451A1 U03A 75008575 PWU TN AV PE0452A1 U03B 75008576 PWU F AV PE0452A2 U03C 75008577 PWU LED IR PATH PE0452A3 U03D 75008578 PWU KEY PE0452A4 U03E 75008579 PWU ...

Page 24: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...

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