Toshiba 46SL500U Installation guide

TOSHIBA
2010 Toshiba LCD
Technical Training
SL500U Chassis Family
LCD510 SERIES 4
INTERACTIVE
TROUBLESHOOTING
40SL500U, 46SL500U, 55SL500U
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
FORWARD

DEAD SET
NO VIDEO
BACKLIGHT
NO AUDIO
SERIES 4 –INTERACTIVE TROUBLESHOOTING
INTERACTIVE LEARNING
INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
PREVIEW
24.00

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
05.00DCV
PIN 1 CN90
Is 5 volts present at pin 12 of CN90 when AC is applied?
YES NO
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
Suspect a problem in the Power Supply
For parts information contact the Toshiba National Parts Center 1-800-345-9785
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
03.40DCV
PIN 1 CN90
Does 3.4 volts appear at pin 11 of CN90 when the power button is pushed?
YES NO
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
12.00DCV
PIN 1 CN90
Does 12 volts appear at pins 1, 2, 3, & 4 of CN90 when the power button is
pushed?
YES NO
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
Suspect a problem in the Power Supply
For parts information contact the Toshiba National Parts Center 1-800-345-9785
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
Does a Blink Code appear when the unit is turned on?
YES NO
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
Suspect a Problem with the Main Board.
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

MAIN BOARD
POWER SUPPLY
PANEL
REPLACE
INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
Use the Blink Code Chart to Help Diagnose the Problem.
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)
In-Warranty Panel
replacement requires pre-
authorization

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
03.40DCV
PIN 1 CN90
YES NO
Does 3.4 volts appear at Pin 9 of CN90 when the Power Button is pushed?
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
Suspect a Problem with the Main Board.
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

INFO FORWARD BACK HOME END
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
Suspect a problem in the Power Supply.
For parts information contact the Toshiba National Parts Center 1-800-345-9785
SERIES 4 –DEAD SET (NO SOUND –NO PICTURE –NO POWER LED)

© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
SERIES 4 -NO OR DISTORTED VIDEO
INFO FORWARD BACK HOME END
Does the back light function normally when the unit is
turned on?
“Normally” means in a
reasonable time frame
and evenly lit.
YES NO

© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
SERIES 4 -NO OR DISTORTED VIDEO
INFO FORWARD BACK HOME END
YES NO
Is the screen discolored or does it have streaks and dark
areas as shown in the example below?

If the T-Con (Timing Control Board) is available, try it. If not, or if it does not
help, replace the LCD Panel.
T-Con
For parts information contact the Toshiba National Parts Center 1-800-345-9785
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
SERIES 4 -NO OR DISTORTED VIDEO
INFO FORWARD BACK HOME END
THE T-CON IS
POSSIBLE, BUT
UNLIKELY. SUSPECT
THE LCD PANEL.
In-Warranty Panel
replacement requires pre-
authorization

© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
SERIES 4 -NO OR DISTORTED VIDEO
INFO FORWARD BACK HOME END
When the Input button is pressed on the Receiver or the Remote, is the On
Screen Display Clear and Normal?
YES NO

© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
SERIES 4 -NO OR DISTORTED VIDEO
INFO FORWARD BACK HOME END
Suspect a Problem with the Main Board.
For parts information contact the Toshiba National Parts Center 1-800-345-9785

© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
SERIES 4 -NO OR DISTORTED VIDEO
INFO FORWARD BACK HOME END
YES NO
CN90
PIN 1
12.00 DCV
Are the voltages normal at pins 1, 2, 3, & 4 of CN90 (12v)?

.015 DCV
.017 DCV
© 2010 TOSHIBA AMERICA CONSUMER PRODUCTS, L.L.C.
SERIES 4 -NO OR DISTORTED VIDEO
INFO FORWARD BACK HOME END
Check for LVDS activity at CN651 and CN652. If it is present, suspect a
problem the T-Con or LCD Panel. If it is not present, replace the Main PCB.
For parts information contact the Toshiba National Parts Center 1-800-345-9785
In-Warranty Panel
replacement requires pre-
authorization