Polaroid FLM 3701 - 37" LCD TV Service Manual

Service manual
Hide thumbs Also See for FLM 3701 - 37" LCD TV:

Advertisement

COLOR TELEVISION
LC-37K7

Advertisement

Table of Contents
loading

Summary of Contents for Polaroid FLM 3701 - 37" LCD TV

  • Page 1 COLOR TELEVISION LC-37K7...
  • Page 2 Functional Board List LCD/Plasma Televisions Please note that this BOM list may vary from the original documentation. This part list supersedes the parts list contained within the body of the service manual. Please reference the part numbers below when ordering replacement boards of the servicing of this model.
  • Page 3: Table Of Contents

    CONTENTS Safety instructions………………………………………………………………………..… Adjustment instruction …………………………….…….…………………………….… Trouble shooting ……………………………………………………….…………………… Method of software upgrading ………………………………………….…….…………… LC-37K7 working principle analysis……………………………….………….…………. LC-37K7 block diagram…………………………………..……………………….………… IC block diagram………………………………………………………………………..…… Main assembly……………………………………………………………………………..… Identification criteria for the bright spot and dark spot of the LCD screen………..…. Wiring diagram ……………………………………………………………..……………... Troubleshooting charts………………………………………………………………..……...
  • Page 4: Safety Instructions

    This service manual is only for service personnel to take reference with. Before Attention: servicing please read the following points carefully. Safety instructions 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 5 would be unable to work and no way to get it repaired. 2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit. Therefore it must be packed in a strong case before the transportation or handling.
  • Page 6: Adjustment Instruction

    Alignment instruction 1 Alignment equipment PM5518 (video signal generator) K-7253 (VGA signal generator) CA210 (white balancer) 2 Alignment flow-chart The alignment flow-chart is shown as fig-1 Check DDC and FLASH To produce CPU board and analog board Check the CPU board and analog board All testing Connect with central signal source, then check each function of TV such as analog control etc., check the output of headphone and speaker...
  • Page 7 3.1 EEPROM initialization Enter the first page of factory menu, select “clear eeprom” and then press “enter”, shut down the unit after “ok” appears. 3.2 VGA/DVI channel adjustment 3.2.1 Preset VGA channel mode Input VGA signal (PATTERN 5: Final Test) of K-7253, select TIME301(640*350/70Hz), press “AUTO”...
  • Page 8: Trouble Shooting

    the value of the two levels gray-scale be the specified value. 3.4 white balance adjustment YPbPr channel input YpbPr signal of K-7253 to YPbPr-1 terminal, input TIME380(480i) PATTERN471 8 level gray-scale signal, set the value of Hor-width to 23, Ver-width to 5, S-bright to 120 and S-contrast to 140.Enter adjustment menu of white balance, adjust the third level using white balancer.
  • Page 9 Fringe in picture Check if the antenna is correctly oriented. Maybe there is electric wave reflected from hilltop or building. Picture is interfered by stripe Possibly due to interference from automobile, train, high shaped bright spots voltage transmission line, neon lamp etc. Maybe there is interference between antenna and power supply line.
  • Page 10: Method Of Software Upgrading

    darkest area of the picture Possibly the brightness grade of DVD player (broadcaster) is set too high. No picture or signal produced from the Check if the cable is disconnected. displayer if “XXX in search” appears. Check if it’s connected to the proper terminal or if the input mode is correct.
  • Page 11 FlashUpgraderNT (use under window 2000/XP/NT) FlashUpgrader (use under window 98), The following interfaces will show up after running the program: Based on the computer features, set up the serial port (COM Port). Select corresponding serial port (if it’s unable to FLASH WRITE, change to another port). Baud is selected to be 115200. Then select Reset Target After Download.
  • Page 12: Lc-37K7 Working Principle Analysis

    LC-37K7 working principle analysis Please refer to LC-37K7 BLOCK DIAGRAM in order to know the working principle of LC-37K7 brief introduction to its signal flow is shown as follows: RF signal produces composite color television signal through TUNER201, the signal together with AV1/SVHS(SVHS priority) and AV2 etc.
  • Page 14: Ic Block Diagram

    IC block diagram 1.MSP3420 Pins description: 2,3 PIN: SCL,SDA applied for control the operation of IC . 27,28 PIN: output left and right sound channel R/L to speaker processor. 36,37 PIN:AV OUT of sound R/L. 47,48 PIN:D4-1/D4-2/PCMCIA selected input R/L. 50,51 PIN:Input of VGA.
  • Page 15 2.VPC3230 Pins description: 4 PIN: Input U of PCMCIA. 5,73 PIN: Input Y of PCMCIA. 6 PIN: Input V of PCMCIA 31-34, 37-40 PIN: output format signal of. ITU-R656 70 PIN:Video of AV OUT 71 PIN:Input C of SVHS. 72 PIN:input Video (SVHS in priority) of Y or AV1 of SVHS. 74 PIN:input Video of AV2.
  • Page 16 3.AD9883...
  • Page 17 4.FLI2310-Simplified Internal Block Diagram...
  • Page 18 5.JAG-ASM...
  • Page 19 6. TFP403 functional block diagram 3.3 V 3.3 V 1.8 V Regulator Internal 50- 3.3 V Termination RED(0-7) QE(0-23) Channel 2 CH2(0-9) CTL3 Rx2+ QO(0-23) Latch Rx2- CTL2 ODCK GRN(0-7) Channel 1 Data Recovery CH1(0-9) Rx1+ TMDS Panel SCDT Latch CTL1 Decoder Interface...
  • Page 20 7. DS90C385 DS90C365 DS100868-1 DS100868-29 Order Number DS90C385MTD or DS90C385SLC Order Number DS90C365MTD See NS Package Number MTD56 or SLC64A See NS Package Number MTD48...
  • Page 21: Main Assembly

    Main assembly NAME MAIN COMPONENT AND it’S NO. AV processing board 667-L37K7-40 NA01 MSP3410 £ ¨ 353-34100-80£ © NA03 M62494FP £ ¨ 353-62494-20£ © TPA3008D2 £ ¨ 353-30080-10£ © CPU board JAG-ASM (353-0JAG0-00) 667-L37K7-56 FLI2310 (353-23100-00) TFP403PZP £ ¨ 353-04030-10£ © VPC3230D (353-32300-80) MST9883B...
  • Page 22: Identification Criteria For The Bright Spot And Dark Spot Of The Lcd Screen

    Identification criteria for the bright spot and dark spot of the LCD screen Q’ty allowed Distance between two spots Category criteria 15" 20" 22" 30" 40" 15" 20" 22" 30" 40" One single ≤5 ≤2 ≤5 ≤2 ≤3 spot Bright ≥15mm 2 neighboring ≤2...
  • Page 23: Wiring Diagram

    Wiring diagram Right panel...
  • Page 24: Troubleshooting Charts

    Troubleshooting charts 1. No raster Turn-on power supply, check if the red indicator is light in the STANDBY? blue Check PIN3(5V output) of the Check the indicator in power supply board C3 turn-on condition Check if the indicator is flicker Non-change color in the sensor control normal condition?
  • Page 25 2. raster, but no picture Check if the unit Check can operation? channels have signal? Which is no VGA/DVI Replacing CPU Enter factory-menu, signal board operation CLEAR channels EEPROM, then turn YPRPB Replacing off , turn on again , it if CPU board display picture.
  • Page 26 3.no sound Check if PIN1 and PIN2 is 18V of XA12 Check if PIN2 is 12V of XA09 Check PIN5 and PIN8 Replacing NA04 output wave of NA03 Check power supply Check PIN27 PIN28 output wave of Replacing NA03 NA01 Check PIN67 wave of NA01 Replacing NA01 Replacing TUNA01...

This manual is also suitable for:

Lc-37k7Flm-3701

Table of Contents