Related Manuals for Toshiba 55L7400U series
Summary of Contents for Toshiba 55L7400U series
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Page 1: Lcd Color Television
FILE NO. 050-2014029 REVISED:01 SERVICE MANUAL LCD Color Television 55L7400U series (System Information) -
Page 2: Revision History
REVISION HISTORY REV Date Reason for Change Oct/2/2014 Addition of Note in Procedure 5 of "FIRMWARE UPDATING."... -
Page 3: Table Of Contents
CONTENTS IMPORTANT NOTICE GREEN PRODUCT PROCUREMENT LEAD-FREE SOLDER SAFETY INSTRUCTION SERVICE MODE LED INDICATIONS FOR SERVICE FIRMWARE UPDATING MAIN BOARD EXCHANGE SETTING SHIPOUT CODE (when Main board is exchanged) 10. WRITING SERIAL NUMBER INTO MAIN BOARD 11. INTERCONNECT 12. EXPLODED VIEW 13. -
Page 4: Important Notice
WARRANTY OF ANY KIND, EITHER 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... -
Page 5: Green Product Procurement
Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any marketing of new products containing the restricted substances. Increasing attention is given to issues related to the global environmental. Toshiba Corporation recognizes environmental protection as a key management tasks, and is doing its utmost to enhance and improve the quality and scope of its environmental activities. -
Page 6: Safety Instruction
(1/3) SAFETY INSTRUCTION WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW. Safety Precaution WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER. THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED BEFORE SERVICING THIS CHASSIS. - Page 7 (2/3) which use high voltage. Always follow the manufactured wiring routes / dressings. Always ensure that all internal wirings are in accordance before re-assembling the external casing after a repairing completed. Do not allow internal wiring to be pinched by cabinets, panels, etc. Any error in reassembly or wiring can result in electrical leakage, flame, etc., and may be hazardous.
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Page 8: Product Safety Notice
(3/3) Product Safety Notice Many electrical and mechanical parts in this chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements;... -
Page 9: Service Mode
(1/3) SERVICE MODE ENTERING SERVICE MODE 1. Press MUTE button twice on Remote Control. TV mode changes as follows. Un-Mute => 1/2Mute => Mute 2. Press MUTE button again and keep pressing. (Sound Mute is canceled) 3. While pressing the MUTE button, press CH/INPUT button on TV control panel. (Enter Service Mode) - Page 10 (2/3) KEY FUNCTION IN THE SERVICE MODE The following key entry during display of adjustment menu provides special functions. Button Function INPUT button (on Remote) Test signal selection (on Remote) Selection of the adjustment items +/– (on Remote) Change of the data value [7] button Automatic A/D Adjustment (PC, Component, Composite(PAL, NTSC))
- Page 11 (3/3) ADJUSTING ITEMS IN THE SERVICE MODE Item Description RCUT RED CUTOFF GCUT GREEN CUTOFF BCUT BLUE CUTOFF RDRV RED DRIVE GDRV GREEN DRIVE BDRV BLUE DRIVE OSRC COOL R-CUTOFF-OFFSET for COOL OSRC NATURAL R-CUTOFF-OFFSET for NATURAL OSRC WARM R-CUTOFF-OFFSET for WARM OSGC COOL G-CUTOFF-OFFSET for COOL OSGC NATURAL...
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Page 12: Firmware Updating
(1/2) FIRMWARE UPDATING To upgrade FW for L7400U series via USB mass storage device, please follow the steps below: 1. Use the USB mass storage device formatted with “FAT32”. 2. Copy the following 2 files to the root directory of the USB mass storage device. L7400.meta L7400_8.2.xx.yy.zz.1.fwu ("8.2.xx.yy.zz.1"... - Page 13 (2/2) 7. When FW upgrade starts, the following message appears. Please leave the DTV alone until FW upgrade completes as described in No.9 below. 8. After that, the following gauge screen appears. Wait until the gauge display reaches 100%. 9. If FW upgrade succeeds, the following message appears. After that, the DTV will reboot or go to standby automatically according to the user setting on No.6 above.
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Page 14: Main Board Exchange
Wiring Diagram Panel module E311 E312 E260 CN650 CN505 CN502 CN506 IR board CN700 1 VCC_LCD 1 Anode1 1 Anode6 1 GND 1 3D_EN 1 VCC_LCD 1 3.3V_TVM 1 3.3V_STB 2 VCC_LCD 2 Cathode1 2 Cathode6 2 GND 2 HE_RESET 2 VCC_LCD 2 RMT_IN 2 Remote... -
Page 15: Exploded View
Exploded View 55L7400U series Location Description E260 PC BOAD ASSY IR/B E261 PC BOAD ASSY KEY/B E262 PC BOAD ASSY LED/B E200 PC BOARD ASSY MAIN E263 PC BOARD ASSY FRC/B E300 LCD PANEL ASSY E272 H-CON SET, MB-SPK E274... - Page 16 TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION 2-9, Suehiro-Cho, Ome-Shi, Tokyo 198-8710, Japan Rev-02 10-08-2014...