Hisense LHD32D33EU Service Manual Download Page 9 | Manualshive

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LCD TV Service Manual

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2.2 Main Board:

The “main board & power board image”is only for reference, other SIS231 products

refer to the actual units to determine the boards, please.

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Hisense Confidential

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Summary of Contents for LHD32D33EU

Page 1: ...R LCD Television Service Manual Product Type LHD32D33EU Chassis SIS231 Hisense Electric Co Ltd AUG 2013 ...

Page 2: ...enu and Adjustment 11 3 1 To enter the Factory OSD Menu 11 3 2 Factory OSD Menu 11 4 Software Upgrading 12 4 1 Get ready for upgrading 12 4 2 Using factory menu to upgrade 12 4 3 Upgrade when power up 13 4 4 Using uart2spi_tool to upgrade 23 5 Power assign Signal process 15 5 1 SIS231 Power assign 15 5 2 SIS231 Signal process 15 5 3 Troubleshooting 16 6 Schematic circuit diagram 32 7 Explode view ...

Page 3: ...ions require the use of tools specially designed for the purpose The special tools should be used when and as recommended It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel The possibility is that improper service methods may damage the equipment and pose risk of persona...

Page 4: ...RIGINAL MANUFACTURER S REPLACEMENT PARTS WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE GUIDE 1 1 2 All ICs and many other semiconductors are susceptible to electrostatic discharges ESD Careless handling during repair can reduce life drastically When repairing be sure to use antistatic table mats and properly use a grounding wrist strap Keep components and tools...

Page 5: ...diately turn off the power Continuing to use the product may cause fire or electric shock 4 If the product emits smoke and abnormal smell or makes an abnormal sound immediately turn off the power Continuing to use the product it may cause fire or electric shock 5 Do not pull out or insert the power cable from to an outlet with wet hands It may cause electric shock 6 Do not damage or modify the pow...

Page 6: ...power supply block it can result in electric shock or may trip the main circuit breaker When installing the LCD module in and removing it from the packing carton be sure to have at least two persons perform the work When the surface of the panel comes into contact with the cushioning materials be sure to confirm that there is no foreign matter on top of the cushioning materials before the surface ...

Page 7: ...quilateral triangle is intended to alert the user to the presence of insinuated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the s...

Page 8: ...LCD TV Service Manual 2 Product Specifications 2 1 Specification Notes Features appearance and specifications are subject to change without notice Hisense Confidential ...

Page 9: ...LCD TV Service Manual 2 2 Main Board The main board power board image is only for reference other SIS231 products refer to the actual units to determine the boards please Hisense Confidential ...

Page 10: ...LCD TV Service Manual 2 3 Wiring Diagram Note The above Wiring Diagram is only for reference other SIS231 products refer to the actual units to determine the connectors please Hisense Confidential ...

Page 11: ...VOL button adjust values in the menu 4 Press M button exit factory mode in the factory OSD menu When TV outgoing factory user can not enter factory OSD menu with Factory Remote b With user s RC 1 Power TV On 2 Press Menu button and call up User OSD Menu 3 Select Sound Balance 4 When Balance value is 0 Enter 1 9 6 9 in sequence Note If necessary re do number keys 5 Factory OSD appears 6 Press the s...

Page 12: ... to the USB root directory insert the USB disk to theside of the USB interface of the main board 4 2 2 Enter the factory menu balance 1969 select Update USB Update USB Update Start The LED indicator will flash red and blue when upgrading The system begins to upgrade when the upgrade file automatically loaded and displays a progress bar in the OSD with LED lights flash 4 2 3 After update success it...

Page 13: ... indicator will start flash red and blue till the upgrade is finished The red light and green light flashing at 1 4 seconds intervals Please AC off and AC on 4 4 Using uart2spi_tool tool to upgrade Serial port can upgrade the whole program Serial port upgrade is very slow it takes about 20 minutes As far as possible without serial upgrade The serial upgrade tools isuart2spi_tool Serial port upgrad...

Page 14: ...e the packet file 4 4 6Click the restore 4 4 7Click ok and began to upgrade At the same time the progress bar at the bottom of began to move Progress bar run twice the first time is erased and the second time is written 4 4 8To be written to complete will pop up prompts can again on the electricity turned on Hisense Confidential ...

Page 15: ...LCD TV Service Manual 5 Power assign Signal process 5 1 SIS231 Power assign 5 2 SIS231 Signal process 5 3 Troubleshooting 6 Schematic circuit diagram 7 Explode view Hisense Confidential ...

Page 16: ...TP SIS231 P83X Maintenance Manual Power troubleshooting Display troubleshooting Audio troubleshooting Function troubleshooting Power board troubleshooting ...

Page 17: ... 12V ADJ BL_ON Headphone LVDS DVD IR YPBPR SGM330 KEYPAD 8Ω DVD_Audio MUTE Audio out AMP R Speaker YPBPR DVD 8Ω MINI YPBPR SCARTRGB CVBSAUDIOIN CVBS AUDIO OUT USB SIS23X DDR3 L Speaker CVBS AUDIO IF PCMCIA I2C SPI Flash R G B VGA PC Audio COAX 3 HDMI SCART USB AV VGA PC Audio COAX HDMI AV ...

Page 18: ...e power board Y Check power on the TV board Y Check the LD1 and CD29 for 5V N Check if the UD1 is OK Y 1 Check the Pin2 4 of UL11 for 3 3V N 1 Check if the RD1 are damaged 2 Update the software Y Repair the power board 2 Check the CD45 for 1 0V 3 Check the CL74 for 1 5V N Check if the UL11 UD41 UL61 are damaged ...

Page 19: ...f R66 exist 560 600 MHZ clock N Check if external power supply is ok Y Check if UL2 have 3 3V output N Check unmoral power supply module N Check if Y1 or FLASH is OK Y Check if R42 is OK N Check UL2 Y Check if U5 FLASH have N Change FLASH or Y1 N Y power circuit upgrade or upgrade to death N Change IC chip of UL2 Y Upgrade or change FLASH Change main chip U1 Change R42 ...

Page 20: ...LVDS cable is right and if well connected with the board Y Check if G pole voltage of QM2 is low N Check if U1 jumper contact well N Change the LVDS cable Y Check if the panel is ok N Check if B pole of QM1 is high 0 6V or front end of Y Change QM2 N Change CN10 or jumper Y Check power supply Y Change U1 N Change panel RM1 is 3 3V N Change U1 Y Change QM1or RM1 ...

Page 21: ..._Panel voltage is right Y Check the LVDS cable is ok Y LCD self is ok Y Check if the circuit between the LVDS jack and U6 are well soldered Y N N N Change the LVDS cable Change LCD Repair this damage circuit Check U1 power supply and clock Y Upgrade software or adjust LVDS MAP Y Change U1 ...

Page 22: ... volume is rightly set or if mute function is off Y Change the power Set it rightly N Check if the output signal on the Pin18 20 Pin23 25 of UA1 is normal N Check if the power of UA1 is OK Y Check if the audio signal input to UA1 is Ok N Check the audio circuit between the U1 and UA1 Y Y Repair the speaker Check if the UA1 is damaged ...

Page 23: ...T2 is 3 3V Check the pin 16 17 of UT2 I2C signal Y Y Check if the pin 6 voltage of UT2 is right N N Check if the pin 9 10 of UT2 has signal output N Y Check circuit between UT2 and U1 N N Check external RF equipment Change U1 UT2 badness change it Check IF AGC Circuit Check I2C network and make sure U1 is ok Check this pin s power supply ...

Page 24: ... sure input signal source is regular Y PC AV channel sound is normal N Refer to no sound N Signal source is not regular check external equipment Y EDID is right troubleshooting Y Check if U1 is damage N Check HDMI periphery circuit or upgrade software ...

Page 25: ...g HDMI no picture No signal or picture abnormal Check if the HDMI cable is right and if well connected with the board N Repair welding or change HDMI terminal N Y HDMI periphery circuit is ok Y Correct abnormal component change U1 ...

Page 26: ... Check if the VGA cable is right or signal output equipment is right N Correct setup equipment or change VGA cable Y Repair the circuit of VS HS N Repair the circuit of VS HS Y Check circuit between input terminal to U1 And check software is ok Y Change U1 ...

Page 27: ...k if the signal cable is right and single output equipment setup right N Correct setup equipment or change signal cable Y Check RI1 RI2 RI3 RI31 RI32 RI33 N Repair RI1 RI2 RI3 RI31 RI32 RI33 Y Check circuit between input terminal to U1 And check software is ok Y Change U1 ...

Page 28: ...5 3 12 Function Troubleshooting other USB is abnormal Repair the USB power 1 SCART no signal 2 SCART missing colors Repair the R G B circuit ...

Page 29: ...5 3 13 Power board troubleshooting Block Diagram Feed back Main board 12V ON OFF ADJ PWM AC input EMI filter Rec fier Power convertor Output filter 19V 24V 32V 50V LED driver ...

Page 30: ... Y Check the power components damage or not Y Change damaged components N N Check EMI open or L N short N Check if EB1 voltage about 2Vac Y Y Change short components Go to check Main board func on Check the rec fier Check if UB1 PIN5 voltage is about 15V Y Check if output short N Check if RB12 RB13 RB14 open N Change UB1 Y Change damage resistors ...

Page 31: ...PWM ON OFF Control signal Y N Y N check is brightness is in dim status N Check if UB10 PIN 1 voltage is above 12V Check if LED output short Y Y Check the power components QB10 damage or not N Correct the LED cable Increase brightnes s Remove short status Change QB10 Y Change UB10 Check Main board func on ...

Page 32: ..._ON MUTE Audio out PC Audio R B G IF I2C LVDS ADJ BL_ON 12V CVBS AUDIO COAX 3 HDMI AV COAX YPBPR DVD DVD Power 12V DVD 5V MINI YPBPR DVD YPBPR DVD_Audio PCMCIA USB SCART RGB CVBS AUDIO IN CVBS AUDIO OUT SCART USB HDMI SPI Flash Headphone KEYPAD IR LED 8Ω L Speaker 8Ω R Speaker SGM330 TUNER YPBPR ...

Page 33: ...ICL7201 PICL7202 COCL72 PICL7301 PICL7302 COCL73 PICL7401 PICL7402 COCL74 PICL7501 PICL7502 COCL75 PICM601 PICM602 COCM6 PICM3201 PICM3202 COCM32 PICN301 PICN302 PICN303 PICN304 COCN3 PICN1001 PICN1002 PICN1003 COCN10 PICN2001 PICN2002 COCN20 PIDL710A PIDL710K CODL71 PIEL7401 PIEL7402 COEL74 PIH100 PIH101 PIH102 PIH103 PIH104 PIH105 PIH106 COH1 PIH200 PIH201 PIH202 PIH203 PIH204 PIH205 PIH206 COH2...

Page 34: ...401 PICQ1402 COCQ14 PICQ1601 PICQ1602 COCQ16 PICQ1701 PICQ1702 COCQ17 PICQ1801 PICQ1802 COCQ18 PICV401 PICV402 COCV4 PICV601 PICV602 COCV6 PICV801 PICV802 COCV8 PICV1101 PICV1102COCV11 PICV1201 PICV1202COCV12 PICV1901 PICV1902 COCV19 PICV2001 PICV2002 COCV20 PICV3101 PICV3102 COCV31 PICV3201 PICV3202COCV32 PIDF10A PIDF10K CODF1 PIDF410A PIDF410K CODF41 PIDF420A PIDF420K CODF42 PIDI10A PIDI10K CODI...

Page 35: ...6 PIAV20067 PIAV20068 PIAV20069 PIAV20070 PIAV20071 PIAV20072 COAV20 PIAV3401 PIAV3402 PIAV3403 PIAV3404 COAV34 PICC101 PICC102 COCC1 PICC201 PICC202 COCC2 PICC301 PICC302 COCC3 PICH101 PICH102 COCH1 PICH6101 PICH6102 COCH61 PICN201 PICN202 PICN203 PICN204 PICN205 PICN206 PICN207 PICN208 PICN209 PICN2010 PICN2011 PICN2012 PICN2013 PICN2014 PICN2015 PICN2016 PICN2017 PICN2018 PICN2019 PICN2020 COCN...

Page 36: ...ICN12011 PICN12012 PICN12013 PICN12014 PICN12015 PICN12016 PICN12017 PICN12018 PICN12019 PICN12020 PICN12021 PICN12022 PICN12023 PICN12024 PICN12025 PICN12026 PICN12027 PICN12028 PICN12029 PICN12030 PICN12031 PICN12032 PICN12033 PICN12034 PICN12035 PICN12036 PICN12037 PICN12038 PICN12039 PICN12040 COCN12 PIR101 PIR102 COR1 PIR201 PIR202 COR2 PIR701 PIR702 COR7 PIR801 PIR802 COR8 PIR1001 PIR1002COR...

Page 37: ...0E5 PIU10E19 PIU10E20 PIU10E21 PIU10E22 PIU10E23 PIU10F1 PIU10F2 PIU10F3 PIU10F4 PIU10F10 PIU10F18 PIU10F19 PIU10F20 PIU10F21 PIU10G1 PIU10G2 PIU10G4 PIU10G20 PIU10G21 PIU10G22 PIU10G23 PIU10H1 PIU10H2 PIU10H5 PIU10H6 PIU10H20 PIU10H21 PIU10H22 PIU10J1 PIU10J2 PIU10J3 PIU10J4 PIU10J5 PIU10J19 PIU10J20 PIU10K1 PIU10K2 PIU10K4 PIU10K20 PIU10L1 PIU10L2 PIU10L19 PIU10M1 PIU10M2 PIU10N1 PIU10N2 PIU10P1...

Page 38: ...PICN705 PICN706 PICN707 PICN708 PICN709 PICN7010 PICN7011 PICN7012 PICN7013 PICN7014 COCN7 PIQK10B PIQK10C PIQK10E COQK1 PIR301 PIR302 COR3 PIR401 PIR402 COR4 PIR501 PIR502 COR5 PIR601 PIR602 COR6 PIRK101 PIRK102 CORK1 PIRK201 PIRK202 CORK2 PIRK301 PIRK302 CORK3 PIRK401 PIRK402 CORK4 PIRK501 PIRK502 CORK5 PIRK701 PIRK702 CORK7 PIRK801 PIRK802 CORK8 PIRK901 PIRK902 CORK9 PIRK1001 PIRK1002 CORK10 PI...

Page 39: ...ICA1402 COCA14 PICA1501 PICA1502 COCA15 PICA1801 PICA1802 COCA18 PICA1901 PICA1902 COCA19 PICA2001 PICA2002 COCA20 PICA2101 PICA2102 COCA21 PICA2201 PICA2202 COCA22 PICA2401 PICA2402 COCA24 PICA2501 PICA2502 COCA25 PICA2701 PICA2702COCA27 PICA2801 PICA2802 COCA28 PICA2901 PICA2902 COCA29 PICN1801 PICN1802 PICN1803 PICN1804 COCN18 PIDA10A PIDA10K CODA1 PIDA340A PIDA340K CODA34 PIDA350A PIDA350K COD...

Page 40: ...ICT1301 PICT1302 COCT13 PICT1401 PICT1402 COCT14 PICT1501 PICT1502 COCT15 PICT1601 PICT1602COCT16 PICT1701 PICT1702 COCT17 PICT1801 PICT1802 COCT18 PICT1901 PICT1902 COCT19 PICT2001 PICT2002 COCT20 PICT2301 PICT2302 COCT23 PICT2801 PICT2802 COCT28 PICT2901 PICT2902 COCT29 PICT3101 PICT3102 COCT31 PICT3201 PICT3202 COCT32 PILT101 PILT102 PILT103 PILT104 COLT1 PILT201 PILT202 COLT2 PILT301 PILT302 C...

Page 41: ...ONB1 CB25 GND 24V DB11 CB30 RB119 RB120 LB11 LED6 LED3 GD1 GD2 GD3 NC FB1 T3 15AL 250VAC RB1 RB2 RB3 RB4 L N FG CNB1 NTCB1 CXB1 CYB1 CYB2 1 2 4 3 LCB2 VCC CB6 G G D D S S QB1 RB18 RB19 QB2 CB8 RB21 RB11 CB3 SGND CB1 EB5 CB5 RB22 GND SGND CYB3 SGND SGND RB20 RB7 L N DB2 CB4 SGND RB34 RB35 EB4 RB36 1 1 2 2 3 3 ZB1 1 1 2 2 3 3 DB3 SGND RB27 RB28 EB6 SGND SGND DB1 RB12 RB13 RB14 1 1 2 2 3 3 4 4 5 5 6 ...

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