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SERVICE MANUAL
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:
This model is classified as a
This Service Manual describes replacement parts for the green product. When repairing this
green product, use the part(s) described in this manual and
For (*1) and (*2), refer to
SOLDER.
© TOSHIBA CORPORATION 2009
LCD Color Television
40XF550U
www7.toshiba.com
green product
(*1), as indicated by the underlined serial number.
GREEN PRODUCT PROCUREMENT
Rev.1
lead-free solder
(*2).
and
LEAD-FREE
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Summary of Contents for Toshiba 40XF550U
- Page 1 SERVICE MANUAL LCD Color Television 40XF550U Rev.1 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 This model is classified as a green product (*1), as indicated by the underlined serial number.
- Page 2 EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Toshiba shall not be liable for any damages, losses, expenses or costs, if any, incurred in connection with or as a result of use of any information or data provided herein.
- Page 3 that have these same characteristics. Use only the specified parts when the mark is indicated in the circuit diagram or parts list. Part mounting and wire routing should be the same as that used originally. For safety purposes, insulating materials such as isolation tubes or tape are sometimes used and printed circuit boards are sometimes mounted floating.
- Page 4 fluid should contact the skin or clothing, wipe off with alcohol, etc., and rinse thoroughly with water. If the fluid should enter the eyes, immediately rinse the eyes thoroughly with running water. 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.
- Page 5 CMOS-LSI circuitry is used in the LCD module, so avoid damage due to static electricity. When handling the module, use a wrist ground or anchor ground. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for extended periods. Do not store the LCD module below the temperature conditions described in the specifications.
- Page 6 Entering Service Mode Set VOLUME to minimum and press MUTE button twice on the remote control. Press MUTE button again and hold button down. Service Mode display While holding the MUTE button, press MENU button on TV set. Selecting the Adjusting Item Every pressing of CH button in the service mode changes the adjustment items.
- Page 7 LED Indication The Blue, Yellow, and Green LEDs on the TV (at the bottom center and right of the TV) indicate the TV’s status, as described below. XF550U Blue Yellow Green MODE POWER OFF POWER OFF (Standby POWER ON Quick Start Mode Fan Stop Detection Blink IIC BUS Error...
- Page 8 U02A U05A LOW B CHARIS U01A POWER U03A U04A TU-AV SEINE U03D U03B U03C U03E FRONT LED/IR-PATH ILLMINATION...
- Page 9 Power Distribution - Video and Blue Italic Indicates Standby Voltages* Audio Signal Flow – 2008 Red Indicates Switched Voltages 24V BL 40XF550U Indicates Signal Flow Direction P804 (10P) 12V* 24V AUD 24V AUD P803B P803A 3.3V 120HZ (6P) (6P) 3.3V 120HZ...
- Page 11 Dead set – no sound or picture Does 3 VDC appear at pin 3 of P806A when on-off is pressed on the unit? any problem 5VDC present at pin LED indications 1 of P806A when the exhibited after the unit is plugged power button is pressed? Suspect...
- Page 12 No or distorted video Examples of Defective Typical Charis problems: Display Panel Image only on part of Does screen the back light function Black Image normally when the unit Dotted vertical lines is turned on? When Suspect the the input Does Charis module, button on the...
- Page 13 Improper backlight operation Does the back light function and then turn off? it is available, change the 24 VDC present CCF inverter . If this does at pins 1 through 5 of not help, replace the LCD P804 when the unit is display.
- Page 14 No or distorted Audio Digital Analog problem associated with analog or digital (HDMI) inputs? Using Using the power the power distribution diagram, distribution diagram, are are the voltages normal the voltages normal at at P811A and CN90? P811B? Suspect the Suspect the Tuner-AV Suspect the Seine module.
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Page 15: Replacement Parts List
Replacement Parts List Location Part No. Description A201 75008813 FRONT BEZEL ASSY A401 75008585 BACK COVER ASSY A425 75008587 LEG STAND FIX BRACKET A426 75008586 STAND BASE ASSY A429 75008584 WRENCH, 45X160, STAND B001 75011032 DISPLAY G8SEC40SNB120, LTA400HC04 K902 75011034 REMOCON HAND UNIT, CT-90303 MZ03 75007945 WIRE HARNESS, LVDS, V90A00089800 P801... - Page 16 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...