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Service Manual

Model

Model

Model

Model No.:

No.:

No.:

No.: 75UF5550

75UF5550

75UF5550

75UF5550

4-4.

4-4.

4-4.

4-4. LCD

LCD

LCD

LCD Panel

Panel

Panel

Panel

75UF5550

75UF5550

75UF5550

75UF5550

Backlight

Backlight

Backlight

Backlight Unit

Unit

Unit

Unit

LVDS

LVDS

LVDS

LVDS CONNECTOR

CONNECTOR

CONNECTOR

CONNECTOR CN1

CN1

CN1

CN1

16

16

16

16

«
...
15
16
17
18
19
...
»

Summary of Contents for 75UF5550

Page 1: ...ly and is not designed for use by the general public It does not contain warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service information by anyone ...

Page 2: ...eci Specifi fi fi fication cation cation cation 2 1 2 1 2 1 2 1 Speci Speci Speci Specifi fi fi fication cation cation cation list list list list 8 8 8 8 2 2 2 2 2 2 2 2 External External External External pictures pictures pictures pictures four four four four faces faces faces faces 9 9 9 9 Chapter Chapter Chapter Chapter 3 3 3 3 Disassemble Disassemble Disassemble Disassemble and and and and As...

Page 3: ... 7 1 7 1 7 1 Block Block Block Block Diagram Diagram Diagram Diagram 23 23 23 23 7 2 7 2 7 2 7 2 Circuit Circuit Circuit Circuit Diagram Diagram Diagram Diagram 30 30 30 30 Chapter Chapter Chapter Chapter 8 8 8 8 Measurements Measurements Measurements Measurements and and and and Adjustments Adjustments Adjustments Adjustments 8 1 8 1 8 1 8 1 Service Service Service Service Mode Mode Mode Mode 31 ...

Page 4: ...lectrostatically Sensitive 1 3 1 3 1 3 1 3 Important Important Important Important Notice Notice Notice Notice 1 3 1 Follow the regulations and warnings Most important thing is to list up the potential hazard or risk for the service personnel to open the units and disassemble the units For example we need to describe properly how to avoid the possibility to get electrical shock from the live power...

Page 5: ...under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly 1 3 4 About lead free solder PbF This product is manufactured using lead free solder as a part of a movement within the consumer products industry at large to be environmentally responsible L...

Page 6: ...l alcohol 90 99 strength CAUTION CAUTION CAUTION CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts is not required Capacitors may result in an explosion hazard 5 Do not defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped 6 Do not apply AC power to this instrument and or any of ...

Page 7: ... motions when handling unpackaged replacement ES devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device 1 3 7 Ordering Spare Parts Please include the following informations when you order parts Particularly the Version letter 1 Model number serial numb...

Page 8: ...t manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning Warning Warning Warning A warning is used when there is danger of personal injury Reference Reference Reference Reference A reference guides the reader to other places in this binder or in this manual where he she will find additional information on a specific topic 7 7 7 7 ...

Page 9: ...dio Output Power outer W No Total Power Input W 350W Voltage Range V AC100V 240V Power Frequency Hz 50 60Hz Time of Sleep Timer MINS 240Min Net Weight KG 30 3 Gross Weight KG 31 3 Net Dimension MM 1685x973x84mm Packaged Dimension MM 1923x322x1210mm Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 Chapter Chapter Chapter Chapter 2 2 2 2 Speci Speci Speci Specif...

Page 10: ... 75UF5550 75UF5550 75UF5550 75UF5550 2 2 2 2 2 2 2 2 External External External External pictures pictures pictures pictures four four four four faces faces faces faces Front Front Front Front Side Side Side Side Up Up Up Up Side Side Side Side 9 9 9 9 ...

Page 11: ...Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 Right Right Right Right Side Side Side Side Back Back Back Back Side Side Side Side 10 10 10 10 ...

Page 12: ...Mainboard and 6M60 Board 1 Remove the eight screws 2 Remove the Mainbord and 6M60 Board 1 Lay down the TV set 2 Remove the four screws from the stand which in the picture above 3 Remove the stand 3 1 4 Remove the Power Supply Module 3 1 2 Remove the Back Cabinet 1 Remove the four screws 2 Remove the Power Supply Module 3 1 5 Remove the Speaker Remove the Speaker indicated by red circle in below pi...

Page 13: ...odel Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 3 1 6 Remove the Remote Control Board And the Key Board Remove the Remote Control Board and the Key Board indicated by red circle in below picture 12 12 12 12 ...

Page 14: ...nd and Components Components Components Components 4 1 4 1 4 1 4 1 Board Board Board Board Location Location Location Location 13 13 13 13 No No No No Parts Parts Parts Parts Type Type Type Type Description Description Description Description A Board HKL 750203 Power board B Board T MS3458 U801 Main board C Board PL MS6M60 1 6M60 board D Panel SAMSUNG LSC750FF01 LED Panel D Panel B Main Board A Po...

Page 15: ...R IR Key Key Key Key Interface Interface Interface Interface CND1 CND1 CND1 CND1 Pin Pin Pin Pin number number number number Signal Signal Signal Signal name name name name 1 5V 2 RED 3 GRE 4 IR 5 GND 6 K0 7 K1 8 K2 9 K3 10 K4 11 K5 12 K6 13 K7 14 GND Inverter Inverter Inverter Inverter connector connector connector connector CND2 CND2 CND2 CND2 Pin Pin Pin Pin number number number number Signal S...

Page 16: ...in number number number number Signal Signal Signal Signal name name name name 1 12V 2 12V 3 GND 4 GND 5 5V 6 5V 7 GND 8 GND 9 STB 10 5VSB Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 4 3 4 3 4 3 4 3 Power Power Power Power Supply Supply Supply Supply Module Module Module Module 4 3 1 4 3 1 4 3 1 4 3 1 Function Function Function Function Description Descri...

Page 17: ...UF5550 75UF5550 75UF5550 4 4 4 4 4 4 4 4 LCD LCD LCD LCD Panel Panel Panel Panel 75UF5550 75UF5550 75UF5550 75UF5550 Backlight Backlight Backlight Backlight Unit Unit Unit Unit LVDS LVDS LVDS LVDS CONNECTOR CONNECTOR CONNECTOR CONNECTOR CN1 CN1 CN1 CN1 16 16 16 16 ...

Page 18: ...Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 17 17 17 17 ...

Page 19: ...550 75UF5550 75UF5550 Chapter Chapter Chapter Chapter 5 5 5 5 Installation Installation Installation Installation Instructions Instructions Instructions Instructions 5 1 5 1 5 1 5 1 Accessories Accessories Accessories Accessories Remote Control 18 18 18 18 Batteries ...

Page 20: ...onnect the cable from the HDMI device to the TV HDMI socket A B Read your computer user guide and check it has a VGA connector Turn off your TV and PC B C Press the SOURCE SOURCE SOURCE SOURCE button to select HDMI mode Refer to the HDMI device user guide for how to operate C Connect a D type 15 pin VGA interface cable to the Note The TV have no VGA VGA video interface connector on the PC Connect ...

Page 21: ...5550 75UF5550 75UF5550 Chapter Chapter Chapter Chapter 6 6 6 6 Operation Operation Operation Operation Instructions Instructions Instructions Instructions 6 1 6 1 6 1 6 1 Front Front Front Front Panel Panel Panel Panel Controls Controls Controls Controls 20 20 20 20 ...

Page 22: ...Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 6 2 6 2 6 2 6 2 Back Back Back Back Panel Panel Panel Panel Controls Controls Controls Controls 21 21 21 21 ...

Page 23: ... 15 15 15 16 16 16 16 17 17 17 17 18 18 18 18 19 19 19 19 20 20 20 20 21 21 21 21 22 22 22 22 23 23 23 23 24 24 24 24 25 25 25 25 26 26 26 26 POWER INPUT USB Shortcut button CC HOME Program Number Channel selection RECALL button VOL VOL Volume selection CH CH Channel selection Mute Menu button Back button Exit button DISPLAY button SAP button Sleep button Wide button Audio button Picture Mode OK b...

Page 24: ...D2201 PICD2202COCD22 PICD2901 PICD2902COCD29 PICD3001 PICD3002COCD30 PICD3101 PICD3102 COCD31 PICD3301 PICD3302 COCD33 PICD3401 PICD3402 COCD34 PICD3701 PICD3702 COCD37 PICD3801 PICD3802 COCD38 PICD4401 PICD4402 COCD44 PICL101 PICL102 COCL1 PICL201 PICL202 COCL2 PICL301 PICL302 COCL3 PICN2601 PICN2602 PICN2603 PICN2604 PICN2605 PICN2606 PICN2607 PICN2608 PICN2609 PICN26010 COCN26 PICN2701 PICN2702...

Page 25: ... PICD6102 COCD61 PICD6201 PICD6202 COCD62 PICD6301 PICD6302 COCD63 PICD6401 PICD6402 COCD64 PICD6501 PICD6502 COCD65 PICD6601 PICD6602 COCD66 PICD6701 PICD6702 COCD67 PICD6801 PICD6802 COCD68 PICD6901 PICD6902 COCD69 PICD7001 PICD7002 COCD70 PICD7101 PICD7102 COCD71 PICD7201 PICD7202 COCD72 PICD7301 PICD7302 COCD73 PICD7401 PICD7402 COCD74 PICD7501 PICD7502 COCD75 PICD7601 PICD7602 COCD76 PICD7701...

Page 26: ... PICNK202 PICNK203 PICNK204 PICNK205 PICNK206 PICNK207 PICNK208 COCNK2 PICNK301 PICNK302 PICNK303 PICNK304 PICNK305 PICNK306 PICNK307 PICNK308 COCNK3 PICNK601 PICNK602 PICNK603 PICNK604 PICNK605 PICNK606 PICNK607 PICNK608 PICNK609 PICNK6010 PICNK6011 PICNK6012 PICNK6013 PICNK6014 COCNK6 PIQK20B PIQK20C PIQK20E COQK2 PIRK101 PIRK102 CORK1 PIRK201 PIRK202 CORK2 PIRK301 PIRK302 CORK3 PIRK401 PIRK402 ...

Page 27: ...N303 PICN304 PICN305 PICN306 PICN307 PICN308 PICN309 PICN3010 PICN3011 PICN3012 PICN3013 PICN3014 PICN3015 PICN3016 PICN3017 PICN3018 PICN3019 PICN3020 PICN3021 PICN3022 PICN3023 COCN3 PICN501 PICN502 PICN503 PICN504 PICN505 PICN506 PICN507 PICN508 PICN509 PICN5010 PICN5011 PICN5012 PICN5013 PICN5014 PICN5015 PICN5016 PICN5017 PICN5018 PICN5019 PICN5020 PICN5021 PICN5022 PICN5023 COCN5 PICN801 PIC...

Page 28: ... PICI2802 COCI28 PICI2901 PICI2902 COCI29 PICI3001 PICI3002 COCI30 PICI3201 PICI3202 COCI32 PICI3401 PICI3402 COCI34 PICI3501 PICI3502 COCI35 PICI3601 PICI3602 COCI36 PICI3701 PICI3702 COCI37 PICI3801 PICI3802 COCI38 PICI3901 PICI3902 COCI39 PICI8401 PICI8402 COCI84 PICI9501 PICI9502 COCI95 PICI9601 PICI9602 COCI96 PICI10001 PICI10002 COCI100 PICI10101 PICI10102 COCI101 PICN401 PICN402 PICN403 PIC...

Page 29: ...PICNT1016 PICNT1017 COCNT1 PICT501 PICT502 COCT5 PICT1801 PICT1802 COCT18 PICT1901 PICT1902 COCT19 PICT2101 PICT2102 COCT21 PICT2201 PICT2202 COCT22 PICT2301 PICT2302 COCT23 PICT2601 PICT2602 COCT26 PICT2701 PICT2702 COCT27 PICT3201 PICT3202 COCT32 PICT3301 PICT3302 COCT33 PICT3401 PICT3402 COCT34 PICT5601 PICT5602 COCT56 PICT5701 PICT5702 COCT57 PICT5801 PICT5802 COCT58 PICT5901 PICT5902 COCT59 P...

Page 30: ...ICA2701 PICA2702 COCA27 PICA2801 PICA2802 COCA28 PICA2901 PICA2902 COCA29 PICA3001 PICA3002 COCA30 PICA3101 PICA3102 COCA31 PICA3201 PICA3202 COCA32 PICH2801 PICH2802 COCH28 PICNA101 PICNA102 PICNA103 PICNA104 COCNA1 PICNA201 PICNA202 PICNA203 PICNA204 PICNA205 COCNA2 PICNA301 PICNA302 PICNA303 PICNA304 COCNA3 PICNA401 PICNA402 PICNA403 PICNA404 COCNA4 PICNA501 PICNA502 PICNA503 PICNA504 COCNA5 PI...

Page 31: ...30 PICNW20031 PICNW20032 PICNW20033 PICNW20034 PICNW20035 PICNW20036 PICNW20037 PICNW20038 PICNW20039 PICNW20040 PICNW20041 PICNW20042 PICNW20043 PICNW20044 PICNW20045 PICNW20046 PICNW20047 PICNW20048 PICNW20049 PICNW20050 PICNW20051 PICNW20052 PICNW20053 PICNW20054 PICNW20055 PICNW20056 PICNW20057 PICNW20058 PICNW20059 PICNW20060 PICNW20061 COCNW20 PICW24401 PICW24402 COCW244 PICW24501 PICW24502 ...

Page 32: ...ICT4301 PICT4302 COCT43 PICT4401 PICT4402 COCT44 PICT4501 PICT4502 COCT45 PICT4601 PICT4602 COCT46 PICT4701 PICT4702 COCT47 PICT4801 PICT4802 COCT48 PICT4901 PICT4902 COCT49 PICT5001 PICT5002 COCT50 PICT5101 PICT5102 COCT51 PICT5201 PICT5202 COCT52 PICT5301 PICT5302 COCT53 PICT5401 PICT5402 COCT54 PICT5501 PICT5502 COCT55 PICT6701 PICT6702 COCT67 PICT6801 PICT6802 COCT68 PIDT20A PIDT20K CODT2 PIFB...

Page 33: ...Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 7 7 7 7 2 2 2 2 Wiring Wiring Wiring Wiring Connection Connection Connection Connection Diagram Diagram Diagram Diagram 30 30 30 30 ...

Page 34: ... 2 Input 8893 System will be into the factory mode menu when 2 steps above are done At the end of the main factory menu you can see the edition of the software 8 1 2 How 8 1 2 How 8 1 2 How 8 1 2 How to to to to exit exit exit exit If you want to exit this factory menu please press the button Exit on the remote system will be out the factory mode menu 8 2 8 2 8 2 8 2 Measurements Measurements Meas...

Page 35: ...e the Pattern picture 5 Dynamic Contrast Choose on or off in Dynamic Contrast 6 Power On Mode Choose on or off in Power On Mode 7 Mirror Control Choose on or off in Mirror Control 8 Front End Status 9 Timer Test 10 SSC 11 Erase Flash 12 PQ Advance Debug Choose on or off in PQ Advance Debug 13 Factory remote Open or close the Factory remote 14 Factory CH Export 8 2 3 8 2 3 8 2 3 8 2 3 PICTURE PICTU...

Page 36: ...source 8 2 5 8 2 5 8 2 5 8 2 5 Panel Panel Panel Panel Setting Setting Setting Setting 1 LVDS Bit Mode choose the Bit 2 LVDS MAP choose the MAP 3 LVDS ODD Even choose ODD or Even 4 Bcaklight Adiust the value of backlight 5 Reset Panel Setting Date 6 6MX0 LVDS Map choose the 6MX0 LVDS MAP 7 6MX0 Channel choose the 6MX0 Channel 8 6MX0 Mirror choose the 6MX0 Mirror 9 6MX0 Demo choose the 6MX0 Demo 10...

Page 37: ... MSD3393LU MSD3393LU software software software software update update update update 1 Copy the software files to a USB disk on the root directory 2 Insert the USB disk when the AC power is off 3 Turn on the AC power in turn to begin 4 Turn off the AC power until the indicator light fast twinkling 5 Pull out the USB disk and power on the television Note Do not turn off the TV while it is updating ...

Page 38: ...e problem exists on other channels Check the picture and sound systems Refer to the relevant instructions in the manual to adjust the colour Spots with some or all pictures Verify if the antennal is correctly connected Verify if the antennal is in good condition Make fine adjustment of channel Television is not working Disconnect the television from the power supply for 10 seconds then reconnect t...

Page 39: ...l Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 9 2 9 2 9 2 9 2 Mainboard Mainboard Mainboard Mainboard IC IC IC IC Introduction Introduction Introduction Introduction Top view 36 36 36 36 ...

Page 40: ...Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 Bottom view 37 37 37 37 ...

Page 41: ... 2 Audio Amplifier TPA3110D2PWPR UA1 3 Main Flash Memory GD25Q32CSIG U2 4 DC DC convertor 5V 1 8V for LC1117CLTR33 UD3 5 voltage convertor 5V to 3 3V_STB LC1117CLTR33 UL3 6 voltage convertor 5V to 1 15V_STB SCD54TL 2R2M UD2 7 Tuner RFT1 Please check the Schematic Diagram for the particular support 38 38 38 38 ...

Page 42: ...k Check Check No picture but have sound Check the power output No Change the Power Board Yes Check the CON2 BLO Backlight on off Yes No There s something wrong with FRC Verify if the DC DC convertor can output the right Voltage No Change the corresponding DC DC QM4 output 12V Yes No Verify if QM4 output Change the QM4 Yes Still having problems Change Panel Change LVDS wire 39 39 39 39 ...

Page 43: ...n No Yes Change the speakers Verify if the main board has the right input according to the source TV COMPONENT AV VGA HDMI etc Yes Verify if UA1 has the right output Yes Check CNA5 input is right No No Check the corresponding audio input circuit you connect Verify if UA1 has the right power in No Change UA1 Still having problems Change Mainboard 40 40 40 40 ...

Page 44: ... has 5Vstb output Yes Change the Power supply Verify if CND2 Pin3 4 has 5V input Yes Verify if CND1 Pin1 has 12V input Yes Verify if DC DC convertors have the right output Yes No No No Change Power board Change Power board Change corresponding DC DC convertor Still having Change Change the software 41 41 41 41 Problems Mainboard ...

Page 45: ...550 Poor sound Poor sound Verify if sound system is correct No Change sound system For ease of use recommend that customer format the picture and sound settings in the automatic option Still having problems Updata the software and make the reboot or change the maiboard 4 4 4 42 2 2 2 ...

Page 46: ...w hite Verify if the same problem exists in other channels Yes check out of picture and sound system No No Check out of picture and sound system of this channel Change the channel to the right sound system PAL BG SECAM L Yes Refer to relative instructions in the Manual for color adjust Updata the software and Still having problems 43 43 43 43 make the reboot or change the maiboard ...

Page 47: ...hether the Power board is broken Check if the power cord co nnect well Yes Check if the Power board output 5V and 12V No No Reconnect the power cord with the outlet or Power board Replace the Power board pls Still having problems Check if Main board LVDS wire Panel are in good condition 4 4 4 44 4 4 4 ...

Page 48: ...on Description Phenomena Phenomena Phenomena Phenomena Failure Failure Failure Failure cause cause cause cause V B D Vertical bar V Dim Vertal gray line V L D Vertical color line light or dark forever TCP H B D Horizontal bar H Dim Horizontal gary line H L D Horizontal line light or dark forever Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 9 4 9 4 9 4 9 4 ...

Page 49: ...er Scratch Tine or rigidity arose Eyewinker inside Polarizer Eyewinker inside Polarizer Abnormal Display Bright and dark display alternately 1 Chip lose action 2 IC ahort or jointiog bad 3 Pannel and vsc connect bad Part Part Part Part Name Name Name Name Dot Defect Polarizer Bubble Panel or Polarlzer Polarizer Scratch F inside Polarizer Abnormal Display Circuit Flashing Service Manual Model Model...

Page 50: ...ay Maybe caused by surge current and EDS Black Screen B L normal only Black screen display Circuit Crosstalk FIIcker LCD Vcom imbalance Abnormal Color Only color abormal Capacitance improper bring crosstalk inside LCD pannel Abnormal Color Only color abnormal 1 Chip lose action 2 IC short or jointion bad 3 Pannel and vsc connect bad Service Manual Model Model Model Model No No No No 75UF5550 75UF5...

Page 51: ... lose action Connect badness between wire and electrode B L dark B L brightness darker than normal Connect badnessShort between wire and electrode B L wire damaged Without backlight B L wire damaged B L wire open Operation abnormal or systemic noise Operation abnormal or systemic noise Short bitween lamp housing and wire Because consume power too much B L shut down B L shutdown in sometime F M F M...

Page 52: ...ailure Cause Cause Cause Cause Light leakage B L unit badness Brightness at bottom of LCM brighter than normal Mechanlcal or B L B L brightness asymmetric Uniformity Sheet in B L unit is uneven Mount hole Lack screw or screw damage Lack screw Screw damage Service Manual Model Model Model Model No No No No 75UF5550 75UF5550 75UF5550 75UF5550 49 49 49 49 ...

Page 53: ...aier Haier Haier Industrial Industrial Industrial Industrial Park Park Park Park No 1 No 1 No 1 No 1 Haier Haier Haier Haier Road Road Road Road 266101 266101 266101 266101 Qingdao Qingdao Qingdao Qingdao China China China China http www haier com http www haier com http www haier com http www haier com Printed in China ...

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