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Insignia ns-lcd37hd-09 Service Manual

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  • Page 2: Table Of Contents

    CONTENTS Safety precautions………………………………………………………………………..… Alignment instructions …………………………….…….………………………………… Method of software upgrading…………………………………………………………….. 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 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: Alignment Instructions

    Alignment instructions 1. Test equipment VG-848 (YPbPr, VGA signal generator) CA210 (white balancer) 2 Alignment flow-chart The alignment flow-chart is shown as fig-1 Check if DDC and FLASH are written Produce the digital processing board Combined test for general assembly White balance adjustment Connect to the center signal source and check if various functions of TV (station leaking, analog control), earphone...
  • Page 6 3 Unit adjustments Connect all the boards according to wiring diagram, connect with power and observe the display. 3.1 Method for using factory menu: a) Press “INPUT”, “2”, “5”, ”8” and “0” in turn to enter level-one factory menu; b) Press “CH+” and “CH-” to move the cursor to the adjustment page of the level-one factory menu then press “OK”...
  • Page 7 third level be (272, 278). Adjust R GAIN, B GAIN, R OFF and B OFF repeatedly until the value of the two levels gray-scale are (272, 278) then press MENU return to the previous menu or press SAVE TO EEPROM to store the value. Check if the color temperature of NORMAL and WARM is up to the mustard, if not, adjust R-GAIN/B-GAIN/R-OFF/B-OFF till accord with the requirement.
  • Page 8 Table1 YUV signal format Pixel clock pulse Resolution H-frequency (kHz) V-frequency (Hz) Remark frequency (MHz) 720x480i 15.734 59.94/60 13.5 480i 720x480p 31.469 59.94/60 27.00 480p 1280x720p 44.96 59.94 74.18 720p(59p) 1280x720p 45.00 60.00 74.25 720p(60p) 1920x1080i 33.75 59.94 74.25 1080i(59i) 1920x1080i 33.75 60.00...

  • Page 9: Method Of Software Upgrading

    Method of software update Please follow listed below steps: 1. Copy all files to your computer, Include three files ISP_Tool_V43.exe: Debug Tool software for Dynex to update Dynex_32HV36_new.bin: New software for Dynex 32 LCD，(Note: Maybe the update filename no as same as Dynex_32hv36_new.bin, the filename only for example) Dynex32_software_update.doc: Document of software update 2.
  • Page 10 5. Click the icon of Device (If not the first time to run this software we can skip step 5) Set the Device information as below 6. Click the icon of Connect...
  • Page 11 7. If cable connect is ok, you can get the follow picture. If failure please double check the cable connect and try again. 8. Click the icon of Read...
  • Page 12 Click the follow Icon of Read to Select the update software for Dynex...
  • Page 13 Open Select Open Icon. Then will appear the follow picture. 9. Click the Icon of Auto...
  • Page 14 Then will appear the follow picture Please click the Icon of Run, the software will be updated to Dynex. It will take about 10 minutes.
  • Page 15 10. If update software is finished and OK, It will appear PASS. If error please retry the step from 2 to 9. 11. Please disconnect the Dynex from Power Socket, untill the Power LED no light, then reconnect the Dynex to Power Socket and Power on the TV.

  • Page 16: Working Principle Analysis Of The Unit

    Working principle analysis of the unit The analog and digital RF signal received by antenna will be sent to integrative tuner TUNER1(TD1636AF, contains HF and IF amplifier circuits), which selects appropriate channel and sends the selected IF signal to the next level by the control of SDA, SCL. The analog RF signal sent to tuner, via high amplify and mixed frequency to get IF signal VIF.

  • Page 17: Block Diagram

    Block diagram TNUER TD1636AF R2A15112FP M61111FP MSD809 BH3547F earphone socket HDMI 1 HDMI 2 HDMI 3 PS321 CS4344 256M DDR YPbPr 1 P15V330 YPbPr 2 MSD119BL S Video PANEL AV 1 2M Flash AV 2 VGA Audio fiber output YPbPr Audio 1 4052 YPbPr Audio 2 RS232...

  • Page 18: Ic Block Diagram

    IC block diagram 1. M61111FP The M61111FP is a semiconductor integrated circuit built-in the PLL inter-carrier method VIF/SIF dedicated to NTSC. The circuit includes the VIF amplifier, image waveform detection, APC detection, IF/RF, AGC, VCO, AFT, LOCK DET, EQ, AF amplifier, limitter, FM waveform detector circuits, and acts as a small tuner.
  • Page 19 2. MSD119BL The MSD119BL is a highly integrated ASIC for LCD/PDP DTV applications with resolutions up to 1080P. It is configured with an integrated triple-ADC/PLL, a multi-standard TV video and audio decoder, a motion adaptive video de-interlacer, a scaling engine, the MStarACE-3 color engine, an advanced 2D graphics engine, a transport processor, a high-definition (HD) MPEG video decoder, a 24-bit DSP for MPEG audio decoding, a DVI/HDCP/HDMI receiver, and a peripheral control unit providing a variety of HDTV control functions.
  • Page 21 3. MSD809 AGC Description The AGC has two modes of operation. When the chip is powered up, the non-coherent IF AGC & RF AGC will function first. The non-coherent AGC loop will provide the control voltage necessary for proper gain control of the external gain amplifier and tuner in the RF section. The two AGC will extend the dynamic range of power amplifier.
  • Page 24 4. PS321...
  • Page 25 Note: Pins in are for I2C control mode with I2C-CTL-EN=HIGH Pins in BLUE are for EDID bridge function when EDID-BRG-EN=HIGH 5. R2A15112FP R2A15112FP is a Digital Power Amplifier IC developed for TV. R2A15112FP has a maximum power of 15W (typ) x2ch. (VD=24V, THD=1%, SE) at a 4Ω load. It is possible to replace a conventional analog amplifier with a digital amplifier easily.

  • Page 28: Wiring Diagram

    Wiring diagram power board panel digital processing board...

  • Page 29: Trouble Shooting

    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 30 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 31: Troubleshooting Guide

    2. Troubleshooting guide 2.1 No raster Turn-on power supply, check if the red indicator is light in the STANDBY? Check if XV4 pin11 (5V) of Press POWER button in the main board is normal? unit or remote control and check the indicator. green Check if the PIN7 of XV5 in Check STANDBY circuit of...
  • Page 32 2.2 Raster, but no picture Check if the unit button Does display remote control menu in screen when operation? press menu button? Check if the all channels have no signal? Enter factory-menu, Replace initialization EEPROM, main board Replace then turn off the TV, main board turn on again, display picture?
  • Page 33 2.3 Picture, but no sound(TV input) Check if PIN10,27 of Check PIN12 Replace NV10 NV10 is high-level? PIN25 wave of NV10 Check if DV2 positive Check PIN76 terminal is low-level Replace NC1 PIN77 wave of NC1 high Replace VV4 Replace NC1 Replace NV2 2.4 Picture, but no sound(channel except TV) Check if PIN4,32...
  • Page 40 APPENDIX-A: Main assembly 9237HV4111 MAIN COMPONENT AND IT'S NO. NAME MSD119CL (5270119002) M61111FP (5276111101) Digital processing board 6HV0216910 NJ02 MSD809 (5270809003) PS321TQF (5270321001) NV10 R2A15112FP (5271511201) Side interface board 6HV0214610 IR board 6HU0310910 Key board 6HV0190510 Power board 6HV0052010 RC-201-0A Remote control 6010200101 Panel...

  • Page 41: Appendix-B: Exploded View

    APPENDIX-B: Exploded view (LC-37X41)
  • Page 42 PART LIST OF EXPLODED VIEW PART NO. DESCRIPTION 5Q37410010 front cabinet 5501206002 speaker side connection board IR board panel 6153141000 panel fixed bracket 615A102000 power socket power board 5H3741H010 back cabinet 5981340121 screw 6151132000 stand key board 5810064400 panel connection bar digital processing board 5810064310 interface baffle...

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