Haier LE50B7000 Service Manual Download Page 39 | Manualshive

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Service Manual

Model No.:

9-3. Mainboard Failure Check

No picture but have sound

Check the power output

No

Change the Power Board

Yes

Check the CN6 (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

QM12 output 12

Yes

No

Verify if

QM11

output

Change

the QM11

Yes

Still having
problems

Change Panel

Change LVDS wire

39

LE50B7000

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Summary of Contents for LE50B7000

Page 1: ... 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 else could result in serious injury or death 2013 Qingdao Haier Electronics Co Ltd All rights reserved Unauthorized copying and d...

Page 2: ... manual 6 1 4 How to Read this Service Manual 6 Using icons 6 Chapter 2 Speci cation 2 1 Speci cation list 8 2 2 External pictures four faces 9 Chapter 3 Disassemble and Assemble 3 1 11 3 1 1 Remove the Stand 11 3 1 2 Remove the Back Cabinet 11 3 1 3 Remove the Mainboard 11 3 1 4 Remove the Power Supply Module 11 3 1 5 Remove the Speaker 11 3 1 6 Remove the Remote Control Board 12 3 1 7 Remove the...

Page 3: ...ical Parts 7 1 Block Diagram 23 7 2 Circuit Diagram 30 Chapter 8 Measurements and Adjustments 8 1 Service Mode 31 8 1 1 How to enter into Service Mode 31 8 1 2 How to exit 31 8 2 Measurements and Adjustments 31 8 2 1 The Main Menu 31 8 2 2 General Setting 32 8 2 3 Picture 32 8 2 4 Sound 33 8 2 5 Debug 33 8 3 Software Update 34 8 3 1 T VST59 software update 34 Chapter 9 Trouble shooting 9 1 Simple ...

Page 4: ...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 supply or charged electrical parts even the power is off This symbol indicates that high voltage is present inside It is dangerous to make any king of contact with any inside part...

Page 5: ... 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 Lead free solder mu...

Page 6: ...trength CAUTION This is a ammable mixture Unless speci ed 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 its electrical assemblies unless all solid s...

Page 7: ...ze bodily 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 oor can generate static electricity suf cient 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 seria...

Page 8: ...y damage equipment loose data get an unexpected result or has to restart part of a procedure Warning A warning is used when there is danger of personal injury Reference A reference guides the reader to other places in this binder or in this manual where he she will nd additional information on a speci c topic 7 LE50B7000 ...

Page 9: ...m Audio Output Power Built in W 10W 2 Audio Output Power outer W No Total Power Input W 150W Voltage Range V AC100V 240V Power Frequency Hz 50 60Hz Time of Sleep Timer MINS 240Min Net Weight KG Gross Weight KG Net Dimension MM x x Packaged Dimension MM TBD Service Manual Model No Chapter 2 Speci cation 2 1 Speci cation list 8 LE50B7000 15 LE50B7000 250 SECAM B G 10 9 14 5 1125 685 249 Arabic Frenc...

Page 10: ...Service Manual Model No 2 2 External pictures four faces Front Side Up Side 9 LE50B7000 ...

Page 11: ...Service Manual Model No Right Side Back Side 10 LE50B7000 ...

Page 12: ... 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 six screws indicated with red circles in below picture 2 Remove the Power Supply Module 3 1 5 Remove the Speaker Remove the Speaker indicated by red circle in below picture 1 Remove the twenty six screws indicated with red circles 2 Flip machine panel side up 3 Caref...

Page 13: ...Service Manual Model No 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 LE50B7000 ...

Page 14: ...Chapter 4 Location of Controls and Components 4 1 Board Location 13 C Panel B Board A Board B LE50B7000 No Parts Description A Board Power Supply Module B Board T VST59 A5 Mainboard C Panel AUO LCD Panel HKL 500201 T500HVN07 1 ...

Page 15: ...al that panel can display 4 2 2 Connector de nition 14 IR Key Interface CN7 Pin number Signal 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 connector CN6 Pin number Signal name 1 12V 2 12V 3 BLO 4 ADJ 5 GND 6 GND Speaker connector CNA1 Pin number Signal name 1 ROUT 2 ROUT 3 LOUT 4 LOUT LE50B7000 ...

Page 16: ...ainboard power supply connector Pin number Signal name 1 12V 2 12V 3 GND 4 GND 5 5V 6 5V 7 GND 8 GND 9 STB 10 5VSB Service Manual Model No 4 3 Power Supply Module 4 3 1 Function Description To supply power for Mainboard Panel 4 3 2 Connector de nition CN1 is the Power cord connector 15 LE50B7000 CON3 CON4 CON2 JP2 JP1 CON3 CON4 JP2 CON2 JP1 1 2 NC 3 CON2 ...

Page 17: ...Service Manual Model No 4 4 LCD Panel Backlight Unit LVDS CONNECTOR CN1 Connector De nition 16 LE50B7000 ...

Page 18: ...Service Manual Model No 17 LE50B7000 ...

Page 19: ...P SIZE Batteries RemoteControl 5 1 Accessories Service Manual 18 Model No LE50B7000 ...

Page 20: ...ct 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 VGA video interface connector on the PC Connect the other end of the cable to the PC interface connector on the TV Tighten the screws on the D E VGA connectors and connect the audio cable not supplied to the audio input socket on the back of the TV Turn on the TV rstly and then ...

Page 21: ...Service Manual Model No Chapter 6 Operation Instructions 6 1 Front Panel Controls 20 LE50B7000 ...

Page 22: ...nel Controls 21 LE50B7000 1 Earphone output 2 HDMI1 intput 3 HDMI2 intput 4 HDMI3 intput 5 VGA intput 6 PC Audio intput 7 Video in intput 8 Audio in intput 9 ANT intput 10 USB intput 11 YPbPr intput 12 Video in intput 13 Audio in intput ...

Page 23: ...6 3 Setting Up Your Remote Control Note The relevant button doesn t work if TV without teletext NICAM MHL function 22 Service Manual Model No LE50B7000 ...

Page 24: ...ICN409 PICN4010 COCN4 PICN601 PICN602 PICN603 PICN604 PICN605 PICN606 COCN6 PICN1001 PICN1002 PICN1003 COCN10 PICN1101 PICN1102 PICN1103 PICN1104 PICN1105 PICN1106 PICN1107 PICN1108 PICN1109 PICN11010 PICN11011 PICN11012 COCN11 PIED5101 PIED5102 COED51 PIED5201 PIED5202 COED52 PIEE2101 PIEE2102 COEE21 PIEE2201 PIEE2202 COEE22 PIEE2301 PIEE2302 COEE23 PIEL401 PIEL402 COEL4 PIEL4401 PIEL4402 COEL44 ...

Page 25: ...32 PICN12033 PICN12034 PICN12035 PICN12036 COCN12 PICS1901 PICS1902 COCS19 PICS2001 PICS2002 COCS20 PIL2301 PIL2302 COL23 PILL4101 PILL4102 COLL41 PILL4201 PILL4202 COLL42 PILL4301 PILL4302 COLL43 PILL4401 PILL4402 COLL44 PILL4501 PILL4502 COLL45 PILL4601 PILL4602 COLL46 PILL4701 PILL4702 COLL47 PIQF310B PIQF310C PIQF310E COQF31 PIQK310B PIQK310C PIQK310E COQK31 PIR401 PIR402 COR4 PIR701 PIR702 CO...

Page 26: ... PICN106 PICN107 PICN108 PICN109 PICN1010 PICN1011 PICN1012 PICN1013 PICN1014 PICN1015 PICN1016 PICN1017 PICN1018 COCN1 PICN20C PICN20L PICN20L1 PICN20R PICN20R1 COCN2 PICN501 PICN502 PICN503 PICN504 PICN505 PICN506 COCN5 PICN901 PICN902 PICN903 PICN904 PICN905 PICN906 PICN907 PICN908 PICN909 PICN9010 PICN9011 PICN9012 PICN9013 PICN9014 PICN9015 PICN9016 PICN9017 COCN9 PICN1501 PICN1502 PICN1503 P...

Page 27: ... PICN17012 PICN17013 PICN17014 PICN17015 PICN17016 PICN17017 PICN17018 PICN17019 PICN17020 PICN17021 PICN17022 PICN17023 COCN17 PICN1801 PICN1802 PICN1803 PICN1804 PICN1805 PICN1806 PICN1807 PICN1808 PICN1809 PICN18010 PICN18011 PICN18012 PICN18013 PICN18014 PICN18015 PICN18016 PICN18017 PICN18018 PICN18019 PICN18020 PICN18021 PICN18022 PICN18023 COCN18 PIL3901 PIL3902 COL39 PIR5201 PIR5202 COR52 ...

Page 28: ... PICA4401 PICA4402 COCA44 PICA4601 PICA4602 COCA46 PICA4701 PICA4702 COCA47 PICA5101 PICA5102 COCA51 PICA5201 PICA5202 COCA52 PICA5301 PICA5302 COCA53 PICA5401 PICA5402 COCA54 PICA5801 PICA5802 COCA58 PICA5901 PICA5902 COCA59 PICNA101 PICNA102 PICNA103 PICNA104 COCNA1 PICNA201 PICNA202 PICNA203 PICNA204 PICNA205 PICNA206 PICNA207 COCNA2 PICNA301 PICNA302 PICNA303 PICNA304 COCNA3 PIDA10A PIDA10K CO...

Page 29: ...CT1402 COCT14 PICT1501 PICT1502 COCT15 PICT1601 PICT1602 COCT16 PICT1701 PICT1702 COCT17 PICT1901 PICT1902 COCT19 PICT2001 PICT2002 COCT20 PICT2101 PICT2102 COCT21 PICT2201 PICT2202 COCT22 PICT2501 PICT2502 COCT25 PICT2601 PICT2602 COCT26 PICT2901 PICT2902 COCT29 PICT3001 PICT3002 COCT30 PICT3101 PICT3102 COCT31 PIDT101 PIDT102 PIDT103 CODT1 PIESD101 PIESD102 COESD1 PILT101 PILT102 COLT1 PILT201 P...

Page 30: ...Service Manual Model No 7 2 Wiring Connection Diagram 30 LE50B7000 ...

Page 31: ...nd of the main factory menu you can see the edition of the software like this BUILD TIME 2013 02 28 16 35 37 VERSION v1 0 8 1 2 How to 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 Measurements and Adjustments 8 2 1 The Main Menu In factory mode menu press up down button to choose the up down item press right or O...

Page 32: ...V bootup automatically when AC power on 4 WHITE PATTERN select the different color test screen 5 PWM Backlight dimming 6 Hotel Mode select On to set the Channel switchs in Hotel mode 7 Factory remote Open or close the Factory remote 8 2 3 PICTURE Adjust the values of Contrast Brightness Tint Color Sharpness in different source 32 LE50B7000 ...

Page 33: ...ferent source 8 2 5 DEBUG undefined 8 2 6 ADC ADJUST undefined 8 2 7 EMC SETTING undefined 8 2 8 SW INFORMATION Display the software information 8 2 9 Software Update USB 8 2 10 INIT FAC CHANNEL Initialize the factory channel 8 2 11 INIT TV 8 2 12 Burn Mode Open or close the burn in mode 33 LE50B7000 ...

Page 34: ...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 34 LE50B7000 ...

Page 35: ...by Fine Tune and MANUAL Scan No color for some channel program black and white Verify that the same 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 ne adjustment of channel Televisio...

Page 36: ...Service Manual Model No 9 2 Mainboard IC Introduction Top view 36 1 2 3 4 5 6 7 8 LE50B7000 ...

Page 37: ...Service Manual Model No Bottom view 37 LE50B7000 ...

Page 38: ...vertor 5V AVDD_2 5 1 8V for MSD3393LU U9 LC1117CLTRAD UL41 5 voltage convertor 5V to 3 3V_STB LC1117CLTR33 UL1 6 voltage convertor 5V to 1 2V_VDDC CH4055U 100K 021 U4 7 voltage convertor 5V to AVDD_3V for tuner LC1117CLTR33 UT1 8 Tuner SDCL1005C22NJTDF T1 Please check the Schematic Diagram for the particular support 38 LE50B7000 ...

Page 39: ...e Power Board Yes Check the CN6 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 QM12 output 12 Yes No Verify if QM11 output Change the QM11 Yes Still having problems Change Panel Change LVDS wire 39 LE50B7000 ...

Page 40: ...ify 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 CNA1 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 LE50B7000 ...

Page 41: ...e Power supply Verify if CN4 Pin3 4 has 5V input Yes Verify if CN4 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 Problems Mainboard LE50B7000 ...

Page 42: ...fy 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 42 LE50B7000 ...

Page 43: ...oblem 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 NTSC MN Yes Refer to relative instructions in the Manual for color adjust Updata the software and Still having problems 43 make the reboot or change the maiboard LE50B7000 ...

Page 44: ...n 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 44 LE50B7000 ...

Page 45: ...CD Mis align between TCP and Panel Panel failure TCP failure Name Description Phenomena Failure 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 No 9 4 Pannel Failure Failure Mode 45 LE50B7000 ...

Page 46: ...ch 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 Name Dot Defect Polarizer Bubble Panel or Polarlzer Polarizer Scratch F inside Polarizer Abnormal Display Circuit Flashing Service Manual Model No 46 LE50B7000 ...

Page 47: ...DS 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 No 47 LE50B7000 ...

Page 48: ...ire 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 inB L white balck Rotundity or wireli...

Page 49: ...eakage 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 No 49 LE50B7000 ...

Page 50: ...Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com Printed in China ...

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