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XOCECO LC-52R36 Service Manual

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LCD TELEVISION
LC-52R36

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Summary of Contents for XOCECO LC-52R36

  • Page 1 LCD TELEVISION LC-52R36...

  • Page 2: Table Of Contents

    CONTENTS Safety precautions………………………………………………………………………..… Alignment instructions …………………………….…….………………………………… Working principle analysis of the unit…………………………………………………………….. Block diagram…………………………………..………………………………….………… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………………………. Troubleshooting guide ………………………………………………………………..…… Schematic diagram………………………………………………………………………… APPENDIX-A: Assembly list APPENDIX-B: Exploded View...

  • Page 3: Safety Precautions

    Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety precautions 1. Instructions Be sure to switch off the power supply before replacing or welding any components inserting/plugging in connection wire Anti static measures to be taken (throughout the entire production process!): a) Do not touch here and there by hand at will;...

  • Page 4: Alignment Instructions

    would be unable to work and no way to get it repaired. If the connection wires, connectors or components fixed by the thermotropic glue need to disengage when service, please soak the thermotropic glue into the alcohol and then pull them out in case of damage.
  • Page 5 2. The alignment flow chart (see below figure) Check DDC, HDCP KEY and FLASH Production of main board and analog board on the line. Check CPU board and analog board Combined test for general assembly Connect to central signal source; check if various TV functions (station skipping, modulate quantity control etc), check if the output of earphone and speaker are normal.
  • Page 6 3. Adjustment illustration 3.1 The unit adjustment Connect all the boards according the wiring diagram, then power on and check the display. 3.2 The method for entering factory menu Enter factory menu method: press the SOURCE→ 2→ 5→8→0 buttons one by one on the remote control to enter factory menu.
  • Page 7 4. Performance check 4.1 TV function Input center source signal to RF-TV terminal, enter search menu→auto search, check if the channel is leak for auto searching. 4.2 AV/S and YPbPr terminal Input AV/S and HDTV signal, check if the signal is normal. 4.3 VGA terminal Input 640 x 480 @60Hz VGA format signal, check if the signal is normal.

  • Page 8: Working Principle Analysis Of The Unit

    Working principle analysis of the unit The RF1 via integrative tuner TUNER1 after, the FBAS VIDEO1 and SIF is generated. The RF2 via integrative tuner TUNER2 after, the FBAS VIDEO2 and AUDIO is generated. Video signal and audio signal of VIDEO1,VIDEO2,AV1/SVHS1,AV2,AV3 and audio signal of VGA and so on, its sent NA3 (CXA2089Q) to switch selection.

  • Page 9: Block Diagram

    Black diagram EDID Hs,Vs SN74AHC14 24C02 RGB SW. Power-ON,IR,KeyA, PI5V330 HDTV SW. HDTV SW. YPbPr1 KeyB,Led1,Led2,Mute, PI5V330 PI5V330 YPbPr2 HP-SW,VGA-CAB,DV I-CAB,YUV/VGA,YU A/V Processor V-SW,YUV/USB AML3278 L/R-USB CS4334 HDMI1 HDMI SW. HDCP KEY HDMI2 FSHDMI04 24C04 EDID HDMI RX FLASH 24C02 LOGIC SW.

  • Page 10: Ic Block Diagram

    IC block diagram 1.MSP34X0G The MSP 34x0G family of single-chip Multistandard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip.
  • Page 11 Fig. 1–1: Simplified functional block diagram of the MSP 34x0G...
  • Page 12 2. TVP5160 The TVP5160 device is a high quality; digital video decoder that digitizes and decodes all popular baseband analog video formats into digital component video. The TVP5160 decoder supports the A/D conversion of component YPbPr and RGB (SCART) signals, as well as the A/D conversion and decoding of NTSC, PAL, and SECAM composite and S-Video into component YCbCr.
  • Page 13 INTERNAL BLOCK DIAGRAM:...
  • Page 14 3. TPA3001D1 The TPA3001D1 is a 20-W mono bridge-tied load (BTL) class-D audio power amplifier with high efficiency, eliminating the need for heat sinks. The TPA3001D1 can drive 4-Ω or 8-Ω speakers with only a ferrite bead filter required to reduce EMI. The gain of the amplifier is controlled by two input terminals,GAIN1 and GAIN0.
  • Page 15 4. MST3383MB The MST3383MB integrates the HDMI compliant receiver for enabling advanced digital display devices such as digital TVs, plasma displays, LCD TVs and projectors to receive and display. Compliant with the HDMI 1.0 specification, the MST3383MB enables consumer electronic devices to receive uncompressed, high quality, digital audio and video HD content over a single, low-cost HDMI cable.
  • Page 16 5.GM1601/GM1501 The gm1601H is a dual channel graphics and video processing IC for Liquid Crystal Display (LCD) monitors and televisions incorporating Picture in Picture, up to WUXGA output resolutions. The gm1601H provides all key IC functions required for image capture, processing and display timing control.
  • Page 17 6. FLI2310 The FLI230x and FLI2310 are highly integrated digital video format converters for DTV and DVD applications using patented deinterlacing and post processing algorithms from Faroudja Laboratories, coupled with highly flexible scaling, a wide variety of aspect ratio conversions, and other special video enhancing features to produce the highest quality image.
  • Page 18 and Subtitle Display Modes 6.8 TrueLife™ Enhancer Two dimensional, non-linear, luma and chroma video enhancer brings out details in the picture, producing a more life-like image. 6.9 Memory 32-bit wide SDRAM (i.e. one 2M x 32-bit, or two 1M x 16-bit) controller, up to 166 MHz operation, for external SDRAM INTERNAL BLOCK DIAGRAM: 7.
  • Page 19 8. CXA2089Q...
  • Page 20 9. AML3278 The AML3478 is a highly integrated device that provides cost-effective solutions for portable players, media players and integrated entertainment centers. 10. PW9720 The PW9702 is a highly-integrated, 10-bit processing, advanced image quality enhancer. It is used to improve the detail, color, and contrast performance for the existing platform of various applications.
  • Page 23 Trouble shooting 1. Fault clearance Before servicing please check to find the possible causes of the troubles according to the table below. 1.1 Antenna (signal): Picture is out of focus or jumping Bad status in signal receiving Poor signal Check if there are failures with the electrical connector or the antenna.
  • Page 24 signal types. Picture too bright and there is Check if the contrast setting is too high. distortion in the brightest area Possibly the output quality of DVD broadcaster is set too high. It maybe also due to improper terminal connection of the video frequency signal in a certain position of the system.

  • Page 25: Troubleshooting Guide

    2. Troubleshooting guide Make sure that the IR board, key board and their connection wires are good then judge below: 2.1 Without backlight In STANDBY, does LED red light Press POWER button Blue to turn on the unit, Press any key on the RC, then check the LED Does LED flicker? Check if the pin3 of X505 has...
  • Page 26 2.2 With backlight, without picture Does remote control and key of the unit Does not picture operate? of all channel HDMI Which no picture Display OSD? YPBPR TV/VIDEO Enter the factory Does R223 and menu, the CLEAR Check the Check if C16 Main Is LVDS R216-R219...
  • Page 27 2.3 No sound Check if the pin2 of XA15 is 18V? Check if XA14 High Check CPU board pin3 level? Check if VA21 VA22 Check break down pin1 and pin2 of XA17 is 18V? Is high level of NA20 NA21 pin5? Check supply power signal...
  • Page 41 APPENDIX-A: Main assembly 9252LR3611 MAIN COMPONENT AND IT'S NO. NAME MSP3410 (5273410001) Analog board 6LR0375310 M62494FP (5276249401) NA20, NA21 TPA3001D1 (5273001001) GM1601 (5271601001) FLI2310 (5272310002) TVP5160 (5275160001) CPU board 6LR0385610 TVP5147 (5275147001) MST3383MB (5273383001) PW9702 (5279702001) IR receive board 6LR0380910 Key board 6LR03805A0 Side AV board...

  • Page 42: Appendix-B: Exploded View

    APPENDIX-B: Exploded view (LC-52X36)
  • Page 43 PART LIST OF EXPLODED VIEW DESCRIPTION Front cabinet decorative board speaker net side AV board push bar push bar push bar push bar key board speaker assy panel power bracket panel fixed bracket panel fixed bracket panel fixed bracket panel fixed bracket conncetion bracket panel fixed bracket conncetion bracket...
  • Page 44 9252LR3611 Ver.1.0...

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