Polaroid series Service Manual Download Page 19 | Manualshive

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H. Main PCB Removal procedure:

1.

Remove 9 screws from the Main PCB. (indicated “ L “)

Then you could take Main PCB apart from the LCD-TV .

I. Panel Bracket Removal procedure:

1.

Remove 4 screws from the Panel Bracket. (Indicated as “ M ”)

Then you could take Panel Bracket apart from the Front Cover.

L

M

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Summary of Contents for series

Page 1: ...Date April 15 2005 Ver 1 1 V23D V27D V30D series LCD TV NTSC Service Manual ...

Page 2: ... Connection Applications 10 4 Controls Location 12 5 Remote Control 13 6 Disassembly Instructions 15 7 Block Diagram 20 8 Troubleshooting 21 9 Electronic Circuit Description 27 10 Circuit Diagram 31 11 PCB Layout 56 12 Electrical Part List 65 13 Mechanical Disassembly 67 ...

Page 3: ...ill prevent damage to the equipment due to lightning and power line surges 4 If an outside antenna is connected to the television equipment be sure the antenna system is grounded so as to provide some protection against voltage surges 5 An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits or where it can fall into such po...

Page 4: ... instructions are followed 1 2Product Safety Notice 1 Many electrical and mechanical parts in this chassis provide special visual safety protection The protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage wattage etc 2 Before replacing any of these components read the parts list manual carefully The use of substitute replacement parts ...

Page 5: ...Signal I P DVI I Connector PnP compatibility DDC 2B I P Frequency Analog FH 31 5KHz to 60KHz FV 56Hz to 75Hz PC I P Recommended Analog 1024X768 60Hz Audio 1 CVBS S Video Audio 2 Y Pb Pr Audio I P Audio I P L Rx3 Audio 3 PC Video O P Composite Signal TV only Speaker Build in 5W 5W rms THD 10 3 5mm miniature stereo phone jack Audio O P Audio O P L Px3 Sound level output 500 mV rms PIP VoV 3D De inte...

Page 6: ...onnector PnP compatibility DDC 2B I P Frequency Analog FH 31 5KHz to 60KHz FV 56Hz to 75Hz PC I P Recommended Analog 1024X768 60Hz Audio 1 CVBS S Video Audio 2 Y Pb Cb Pr Cr Audio I P Audio I P L R x 3 Audio 3 PC Video O P Composite Signal TV only Speaker Build in 10W 10W rms 3 5mm miniature stereo phone jack Audio O P Audio O P L P x 3 Sound level output 500 mV rms PIP VOV 3D De interlace 3D comb...

Page 7: ...nector PnP compatibility DDC 2B I P Frequency Analog FH 31 5KHz to 60KHz FV 56Hz to 75Hz PC I P Recommended Analog 1024X768 60Hz Audio 1 CVBS S Video Audio 2 Y Pb Cb Pr Cr Audio I P Audio I P L Rx3 Audio 3 PC Video O P Composite Signal TV only Speaker Build in 10W 10W rms 3 5mm miniature stereo phone jack Audio O P Audio O P L Px3 Sound level output 500 mV rms PIP VoV 3D De interlace 3D comb filte...

Page 8: ... SVGA 60HZ 800 600 35 16 56 25 36 0 6 SVGA 60HZ 800 600 37 879 60 317 40 0 7 SVGA 72HZ 800 600 48 077 72 188 50 0 8 SVGA 75HZ 800 600 46 875 75 0 49 5 9 XGA 60HZ 1024 768 48 363 60 004 65 0 10 XGA 70HZ 1024 768 56 476 70 069 75 0 11 XGA 75HZ 1024 768 60 023 75 029 78 75 12 MAC VGA 640 480 35 0 66 667 30 24 13 MAC VGA 832 624 49 725 74 550 57 283 14 US TEXT 720 400 31 469 70 087 28 322 15 WXGA 1280...

Page 9: ... SVGA 60HZ 800 600 35 16 56 25 36 0 6 SVGA 60HZ 800 600 37 879 60 317 40 0 7 SVGA 72HZ 800 600 48 077 72 188 50 0 8 SVGA 75HZ 800 600 46 875 75 0 49 5 9 XGA 60HZ 1024 768 48 363 60 004 65 0 10 XGA 70HZ 1024 768 56 476 70 069 75 0 11 XGA 75HZ 1024 768 60 023 75 029 78 75 12 MAC VGA 640 480 35 0 66 667 30 24 13 MAC VGA 832 624 49 725 74 550 57 283 14 US TEXT 720 400 31 469 70 087 28 322 15 WXGA 1280...

Page 10: ...tion H Freq KHZ V Freq HZ H Polarity V Polarity Pixel CLK MHZ 1 VGA 60HZ 640 480 31 469 59 941 25 175 DVI 2 SVGA 60HZ 800 600 37 879 60 317 40 0 DVI 3 XGA 60HZ 1024 768 48 363 60 004 65 0 DVI 4 US TEXT 720 400 31 47 70 08 28 320 DVI 9 ...

Page 11: ...3 Connection Applications TV only 10 ...

Page 12: ...o connect Audio and Video O P of our LCD TV to VCR for recording program the O P has only one choice that is TV mode z Audio O P IF the main display is TV the Audio O P must be TV sound otherwise if sub display is TV the Audio I P must be selected to Sub so that the Audio O P will be TV sound Video Input device DVD player Satellite receiver Set top box VIDEO Inputdevice Digital Camera Satellite re...

Page 13: ...rol POWER turn on or turn off the LCD TV SOURCE set up the input source PC VIDEO SV TV CV MENU display the main menu CHANEL down up change channels on sequence VOLUME turn up or turn down the volume ASPECT RATIO set up the display Normal Periscope Zoom or Full Remote sensor window Aim the remote control towards this region on the TV Speaker Speaker 12 ...

Page 14: ...ary TV remote control that includes the basic function needed while viewing a live video Sleep Power Number Buttons Return Channel UP Mute MENU Enter VOL TITLE EXIT Channel DOWN APC Audio Function TV PC AV SV CV SWAP VOL Reset ARC Subwoofer Other Function PIP Function 13 ...

Page 15: ...ulti channel sound services Press AUDIO button Select present audio is main display or sub display Press TREBLE button Adjust the treble of audio Press BASS button Press SUBWOOFER button Adjust the bass of audio Open the subwoofer function PIP Control Press ON OFF button Press to watch one of video sources on sub display Press again to make the sub display disappear Press TV AV SV CV button Press ...

Page 16: ...tect the panel faceplate B Base Neck Removal Procedure 1 Remove 2 screws from Neck Cover Indicated as A Then you could take the Back Cover of neck apart from the LCD TV C Base Removal Procedure 1 Remove 4 screws from the Back Cover Indicated as B and C Then you could take Base assembly apart from the LCD TV A B C 15 ...

Page 17: ...r before you should be loose the screw Indicated as E E Back Cover Removal Procedure 1 Remove 8 screws from the Back Cover Indicated as F and G 2 Remove a screw from the Tuner Board Indicated as I 3 Take slide of tuner board Then you could take Back Cover apart from the LCD TV F G G F E D I 16 ...

Page 18: ...he Tuner Board Indicated as I 6 3 Remove 3 screws from the power case assembly Indicated as J Then you could take Slide of AV PCB Power case and Left Side Covers Removal G Main PCB Shield Removal 1 Remove 2 screws from Main PCB Shield Indicated as K Then you could take Main PCB Shield apart from Main Bracket and the PCB Board will be shown on it K H H J 17 ...

Page 19: ...rews from the Main PCB indicated L Then you could take Main PCB apart from the LCD TV I Panel Bracket Removal procedure 1 Remove 4 screws from the Panel Bracket Indicated as M Then you could take Panel Bracket apart from the Front Cover L M 18 ...

Page 20: ...19 ...

Page 21: ...d INVERTER E2 PROM IR Pad Remote Control 8 bit CV SV Interlaced Progressive 24 bit 24 bit AV 3D Comb filter TC90A65F or UPD64083 V Chip Z8612912 Port V Sub Port B Main Port A Main PI5V330 10W 10W Speaker Headphone Subwoofer TV Tuner Philips FQ1236 MK3 4 1 MTS Audio Processor MSP3440G Audio Amp TFA9843 CV Audio SV AV Audio PC Audio ANT Audio P15V330 TV AV Interlaced Sync VGA I2 C SIF Video PC RAM H...

Page 22: ... POWER button to turn on the TV again z Press AV SV or CV button on the remote control to select the corresponding video source PP1 Double Images Ghosts If the TV suffers interference from signals reflecting from mountains or buildings double pictures or Ghosts will occur z Adjust the Antenna s location and direction z Replace it with one with better directionality z Turn off or disconnect the boo...

Page 23: ...d not 300 ohm twin lead cables z Keep the antenna cable away from other connecting cables z Press MTS button to select Mono which will reduce the noise z Adjust BASS or TREBLE properly on remote control PC1 PC display is Not Full Screen z Select Auto Image in OSD menu to optimize the image z If executing Auto Image Adjust still can not achieve full screen display adjust V Position and H Position i...

Page 24: ...remote control z Unplug and then plug the Power Cord of the TV from the AC outlet Picture Halt Abnormal NG1 Issues can t be solved z If the picture still abnormal execute Clear EEPROM STEPS 1 Press POWER key to turn off the LCD TV 2 Press CH key then press Power key of remote control to turn on the LCD TV after 3 seconds then release CH key 3 When INITIAL EEPROM appears on the screen on the INTTAL...

Page 25: ...are not absent End Is it entering into power saving on PC mode No Picture appears Picture appears Replace Main Board PWB 0812 No No No Yes Re plug No picture No picture No picture No picture Re plug No Yes Yes Picture appears No Yes No picture No picture Picture appear No picture Replace Inverter test again Measure white connectors of 2 sides pin voltage that are at 3V and 24V White connector of p...

Page 26: ... board PWB 0812 and check picture Change Power Module and check picture No After welding then check the picture Are the panel cables P005 attached correctly Re plug the panel cable and check the picture Erase EEPROM and then check the picture is 否 Check side SMD of I019 I020 is welded correctly The Ver Or Hor Sync does not hold in any source 25 ...

Page 27: ...Sum 3E86H BIOS Version V30DMBT U21 WBK MP 1 1 12 21 04 EEPROM INITIAL Power Channel Down 4 Enter Factory Mode Power Menu Key 5 Leave Factory Mode Power off 6 Self Test Mode for Burn in Push Menu Channel Up Power ON Key at same time and then loose Power On Key first Keep push Menu and Channel Up Keys for 2 seconds test pattern will appear on the screen Self Test Mode can t be disable by disconnecti...

Page 28: ... 67 and applied to I019 TP6761 156 The LCD TV is designed to have the DDC 2B FUNCTIONS Communication between the LCD TV and computer for DDC is via P022 DVI I connector 20 21 which are defined as SCL SDA signals The computer will read out the EDID from the I011 EEPROM and the EDID data is written into the EEPROM in the factory during production The digital input signal through DVI I cable which is...

Page 29: ...through I010 Audio Power Amp to Speaker iii After the Video signal to the V Chip circuit I025 NJM2244 I033 Z86129 I030 74HC126 to modulate it output to I031 SAA7117 Video Decoder Main or I018 SAA7117 Video Decoder Sub circuit to do modulation and Video source exchanges for CVBS signal type Then CVBS signal changes to the ITU 656 type by I031 or I018 and outputs to I019 Scaler to process 8 Bit belo...

Page 30: ... proper operation of I012 The signal IR DAT Pin 15 of I012 is used for Infrared Receiver If the IR Received some signal I012 will send interrupt signal by Pin 2 3 MSDA MSCL to control any chip The signal designated AD0 AD7 Pin36 43 of I012 are data signal used for transferring data between I012 and I019 The signal TXD and RXD Pin 13 11 of I012 are used for debugging during firmware I013 24LC16B pr...

Page 31: ...ard is fed with 24V through P802 1 5 on Power module and offers 4 1ma typical to each lamp of backlight in LCD panel The brightness adjusted in OSD menu is to control the voltage at P802 11 while this voltage is offered by I019 Scaler TP6761 62 The range of the voltage is from 0V to 3 3V If the voltage of P802 11 is 0V the screen will get light if it s 3 3V the screen will get dim It means that th...

Page 32: ...10 Circuit Diagram PCB Main Board Circuit 31 ...

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Page 51: ...11 PCB Layout 50 ...

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Page 61: ...POWER Layout 60 ...

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Page 66: ...2521 PWB 0707 U05 5097632508 U12 5097632519 U21 5097632519 PWB 0707 U05 5097632509 U21 5097632523 I O Board PWB 0612 U12 5097624527 PWB 0612 U05 5097624513 U12 5097624523 U21 5097624523 PWB 0612 U05 5097624514 U21 5097624530 IR Board PWB 0739 2 U12 5098800942 PWB 0739 2 U05 5098800801 U12 5098800908 U21 5098800908 PWB 0739 2 U05 5098800803 U21 5098800969 Key Board PWB 0739 1 U12 5098800941 PWB 073...

Page 67: ... U05 5057424010 U21 5057424010 Power Cord U12 5056705900 U05 E056705900 U12 5056705900 U21 5056705900 U05 E056705900 U21 5056705900 User s Manual U12 5030007049 U05 5030057109 U12 5030057126 U05 5030057109 U21 5030057146 Front Cover U12 5641101101 U05 5641101601 U12 5641101003 U21 5641101002 U05 5641101401 U21 5642298207 Back Cover U12 5642294312 U05 5642292206 U12 5642292209 U21 5642292210 U05 56...

Page 68: ...13 Mechanical Disassembly 67 ...

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