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lct tv service manual www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 2 - model no.: LCT-20CHST version: 1.0 m m m o o o d d d e e e l l l : : : l l l c c c t t t - - - 2 2 2 0 0 0 c c c h h h s s s t t t c c c h h h a a a s s s s s s i i i s s s : : : l l l s s s - - - 0 0 0 7 7 7 www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 3 - model no.: LCT-20CHST version: 1.0 contents specification and feature ...................................................................................................... ... 4 the function introduction ls07 chassis lcd tv?s main ............................................. 9 signal processing flowchart............................................................................................... 22 spare part list and easy damage part list ..................................................................... 34 factory mode ................................................................................................................... .............. 36 circuit diagram ................................................................................................................ ............ 37 wiring diagram ................................................................................................................. ............ 47 exploded view.................................................................................................................. .............. 48 part list ...................................................................................................................... ....................... 49 www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 4 - model no.: LCT-20CHST version: 1.0 specification and feature 1. the technical specification of f series europe lcd tv: a. tm150f7e : max display format: 1024*768(xga) audio power output: 2*2.0w voltage: dc12v power adapter voltage: ac 100 240w,50/60hz power adapter model number: fsp048-1ad101c b. w170f7e : max display format: 1280*768(wxga) audio power output: 2*2.0w ac input voltage of inside power mold piece: ac 100 240v, 50/60hz the unit sets: ac power switch. c. tm201f7e : max display format: 640*480(vga) audio power output :2*2.0w ac input voltage of inside power mold piece: ac 100 240v, 50/60hz the unit sets: ac power switch. 2. main feature a. rf input , catv function can receive 470mhz catv programs, can store 100 programs (program number display 0 99 ); b. av audio and av video input in scart mode, the system can automatically activate scart checking function to identify signal input modes (cvbs or rgb) and input signal character (16:9 or 4:3); capable to receive pal, ntsc, secam color systems; very convenient to watch vcr (video cassette recorder), pickup camera and other disc?s programs. c. ypbpr input can receive high definition ypbpr component vi deo signal from such as dvd conveniently . support format: 480i, 480p, 576i, 576p, 720p (50/60hz), 1080i (50/60hz), 1080p (50/60hz); d. vga input as the terminal display equipments of computer, it can connect with computer conveniently. it can connect with computer audio card by its own audio connection line ,so you can listen the audio information from computer. www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 5 - model no.: LCT-20CHST version: 1.0 e. program lock and child lock function the function of program lock can lock the programs, input password and modification, the function of child lock can lock the keys. f. timer function you can set turn on and turn off on time, and power off in 15 min automatically if no signal input. automatically enter into save energy mode by itself if no signal in pc condition, it can be awaken if signal inputs. g. blue screen mute noise in condition of tv, av, rgb and ypbpr, gentle blue screen will be displayed if no signal input. h. chinese/english menu adopt the design of convenient and simple graphic menu, you can operate menu more conveniently and more intuition. i. save energy function (power management mode) when tv is used as pc displa y terminal, and pc has no output signal . the tv will be power off in about 30 seconds automatically, and enter into standby condition. press down power/p+/p-/ number key of remote control or the pc signal appearance again, the tv will be on automatically. j. plug and play the tv works as the terminal equipments of computer, need not equip install software it is real plug-and-play. k. automatic correct by its automatic correct function, the lcd tv can bring you the best view. l. no flicker, no radiation, green environment protection the lcd tv can bring you high quality view, and avoid radiation, protect your eyes and look after your health. m. because of it?s advanced power management mode, the tv can reali ze standby and recall on function. n. aci function (auto channel installation). o. stereo and digital accomp anying sound processing. auto identify and demodulate igr, and decode nicam digital accompanying sound. p. zoom image function support follow zoom function: full screen mode, 4:3 mode (16:9 tft), 16:9 (4: 3 tft), movie mode, sub-title movie mode. q. light weight, small dimension, low power consumption www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 6 - model no.: LCT-20CHST version: 1.0 r. advanced picture quality strengthen function dynamic skin color correct: improve distort color in picture make it near to real color. black level extension: blacken the more black area of picture. raise the contrast in dark background. color edge correct: increase the steep of color si gnal edge make the edge of color transition more clearly. brightness edge correct: increase the steep of brightness signal edge make the edge of picture is more clearly. s. super fine and inner fairness tft t. 10-page teletext storage u. dynamic comb filter v. headphones output 3. electric circuit of the tv the europe ls07 chassis lcd tv is composed of steady voltage circuit inverter circuit, rf circuit, video strengthen circuit, video processing circuit, power enlarge circuit, vga circuit, system control circuit and key control circuit. the block diagraph of circuit constitute is below: www.datasheet.net/ datasheet pdf - http://www..co.kr/
-7 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 8 - model no.: LCT-20CHST version: 1.0 4. pcb module introduction the constitute of the pcb is easier than lp03 chassi s, all the signal processing are in main board. a. main board module main board module is the main part of signal processing in lcd tv. the input signal is converted into uniform digital signal, which can be identified by lcm by system control circuit. main board module contain two parts of signal processing module: philips uoc3 process analog audio and video circuit mainly, mst518 process vga circuit, signal format transform system control circuit mainly. the front module can convert the video if signal and audio if signal from tuner into rgb analog signal and audio signal, this part is named analog audio and video decoding process. the rgb color from uoc is r eceived by mst518 and accomplishes a/d conversion, output suitable digital color signal to drive circuit of tft. 8051 processor inside uoc is responsible for co-ope ration the each part of works in system, and respond to user operation, which is operated on control panel (key-press panel module). b. key board module it is composed of 7 function keys the user can operate the lcd tv conveniently by using this module. c. remote control receiving board module it is composed of a work indicator light and a remote receive head. the user use the remote control box by this module can operate the lcd tv conveniently and know the lcd tv work condition. d. earphone output board module it is composed of a earphone outlet, user can listen to by earphone conveniently. e. inverter board module (include inverter circuit) the function of the inverter is supply power to light tube in tft and lighten the back lamp unit of tft module, so the user can see the image on tft. www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 9 - model no.: LCT-20CHST version: 1.0 the function introduction ls07 chassis lcd tv?s main ic 1. the main ic of ls07 chassis number name model main function 1 a1 taf5-e2i21rw2 rf tuner 2 u8, u21 tda1517awt audio amplifier 3 u3 mst518 ad converter and format change 4 u2 uoc(tda15021h) video decode and mcu control 5 q9 si2311ds mos switch 6 u11, u12 irf7316 mos switch 7 u19 ntms10p02 mos switch 8 u23 lm2596-5.0 liner voltage ic 9 u1 24lc21a eeprom (save display parameter information) 10 u4 24lc32a eeprom save user control information 11 u6, u20 pi5v330a video switch 2. the function introduction of main ic a. mst518 high integration chip mst518 is a high performance, high integration image processor which is designed for lcd, it can support sxga format (1280*1024).it integr ates a group of ad converter, high quality format transform system, osd generator, outp ut clock generator, multiple format output display interface (support ttl, lvds, rsds) mst518 feature: have high quality expand transform and compress transform, can output xga format signal integrated lvds circuit inside 8 bit high quality adc inside double vga input, software switch support itu-656 format signal input support h/v sync, composite sync, green composite sync input, and detect automatically by itself programmable 10 bit gamma correct, the brightness and contrast is adjustable 8 color, 256 character osd built-in ddc circuit inside low standby power support ttl, double lvds si gnal output, software switch www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 10 - model no.: LCT-20CHST version: 1.0 mst518 pin function: and cpu interface pin pin name pin function 33 hwreset hardware reset high voltage enable 82 cs chip select signal of three-wire serial bus 83 sda data signal of three-wire serial bus 84 scl clock signal of th ree-wire serial bus 85 int interrupt 98-91 ad [7:0] parallel bus the chassis is not used 125 bustype bus type select analog interface 38 hsync0 analog horizontal sync signal input channel 0 39 vsync0 analog vertical sync signal input channel 0 40 hsync1 analog horizontal sync signal input channel 1 41 vsync1 analog vertical sync signal input channel 1 78 rmid scaler internal reference voltage 79 refp internal adc decouple 80 refm internal adc decouple 75 rin0 analog red signal input channel 0 74 rin0m analog red signal input channel 0 regrounding voltage 73 sogin0 green sync signal input channel 0 72 gin0 analog green signal input channel 0 71 gin0m analog green signal input channel 0 regrounding voltage 70 bin0 analog blue signal input channel 0 69 bin0m analog blue signal input channel 0 regrounding voltage 66 rin1m analog red signal input channel 1 regrounding voltage 65 rin1 analog red signal input channel 1 64 gin1m analog green signal input channel 1 regrounding voltage 63 gin1 analog green signal input channel 1 62 sogin1 green sync signal input channel 1 61 bin1m analog blue signal input channel 1 regrounding voltage 60 bin1 analog blue signal input channel 1 55 rext outside connect 390 ? with 3.3v www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 11 - model no.: LCT-20CHST version: 1.0 lcd interface 145 oclk clock output 146 lde enable signal 144 lvsync vertical sync output 143 lhsync horizontal sync output 138 lva0m lvds output 0 137 lva0p lvds ouput 0+ 136 lva1m lvds output 1 135 lva1p lvds ouput 1+ 134 lva2m lvds ouput 2 133 lva2p lvds output 2+ 128 lva3m lvds output 3 127 lva3p lvds ouput 3+ 132 lvackm lvds clock signal ouput 131 lvackp lvds clock signal ouput + 26-23,18-15 rb[7:0] ttl red signal channel 14-11, 8-5 gb[7:0] ttl green signal channel 4,3,154,153,150-147 bb[7:0] ttl blue signal channel gpio interface 87 gout1/pwm1 pwm output 1 86 gout0/pwm0 pwm output 0 2 bypass outside connect filter capacitor 29 ddc_dat analog interface ddc data 30 ddc_clk analog interface ddc clock 31 ddcrom_clk ddc rom clock 32 ddcrom_dat ddc rom data 34 xin crystal oscillator signal input 35 xout crystal oscillator signal output power pins 48, 54, 58, 77 avdd a/d convert power supply 56 avdd_pll pll power supply 36 avdd_mpll mpll power supply 10, 22, 88, 99, 111, 129, 139, 151 vddp digital signal output power supply 19, 102, 114, 142 vddc digital circuit power supply 1, 9, 20, 21, 37, 42, 45, 51, 57, 59, 76, 81, 89, 100, 101, 112, 113, 130, 140, 141, 152 gnd digital circuit ground www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 12 - model no.: LCT-20CHST version: 1.0 mst518 inner diagraph : b. tda15021h introduction: the third-generator super integrated circuit uoc iii which designed by philips company recently integrates with video decode, 2d co mb filter, high quality audio transacting technique, suitable with the european teletext technique and suitable with us closed caption and v-chip function compatible with single series ic. the series of uoc iii have high integrity, besides completing the processing of all small signals (if signal demodulation, video decode, h/v signal, sound dsp), and integrate all the mcu function. it has many advantages, example: the compact circuit, g ood performance, simple craft and etc. it matched with company?s high performance price ratio and high product efficiency demanding. it is suitable for 4:3 or 16:9, 50/60hz and a100/120hz tv system, the main characteristic below: multi-system if demodulation analog video decode comb filter internal nicam, stereo auto identify and decode scart input channel source auto identify (rgb, cvbs), scart image input format identify (4:3, 16: 9) support 4:3, 16:9 display format top/flof teletext (10 page) receive display channel auto install aci function (can preset) 4 cvbs or 3 y/c input, 1 cvbs output, 2 ycrcb/2 rgb input 4 av audio input, 1 av adjustable audio volume output volume auto level control circuit global fm demodulation picture quality enhancement of dynamic peak value control, skin color correct, gamma correct, black level extension. www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 13 - model no.: LCT-20CHST version: 1.0 can turn down horizon and vertical scan part output h/v sync signal to scaler 128k flash memory inside, support program on line automatic y/c signal identify tda15021h pin function: pin pin name pin function 1 vssp2 grounding 2 vssc4 grounding 3 vddc4 +1.8v 4 vdda3 +3.3v 5 vref_pos_lsl +3.3v 6 vref_neg_lsl+hpl 0v 7 vref_pos_lsr+hpr +3.3v 8 vref_neg_hpl+hpr 0v 9 vref_pos_hpr +3.3v 10 xtalin crystal oscillator input 11 xtalout crystal oscillator output 12 vssa1 grounding 13 vguard/swio protecting voltage input or i/o 14 decdig decdig signal input 15 vp1 +5v 16 ph2lf the second grade horizontal phase lock filter 17 ph1lf the first grade horizontal phase lock filter 18 gnd1 grounding 19 secpll secam pll decouple 20 decbg inside reference voltage decouple 21 ewd/avl vdd5a voltage input 22 vdrb tv vertical sync signal output 23 vdra vertical sync output 24 vifin1 vifinput 1 25 vifin2 vifinput 2 26 vsc outside connect vertical ramp capacity 27 iref recurrent input 28 gndif if grounding 29 sifin1 sif input 1 30 sifin2 sif input 2 31 agcout tuner rf agc control voltage output www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 14 - model no.: LCT-20CHST version: 1.0 32 ehto over voltage protection input 33 ssif mute control signal input 34 audioin5l av left track signal input 35 audioin5r av right track signal input 36 audoutsl scart/cinch left track output 37 audoutsr scart/cinch right track output 38 decsdem track demodulator decouple 39 qsso de emphasis capacitor 40 gnd2 grounding 41 pllif if_pll filter 42 sifagc sound intermediate frequency auto gain control 43 ifvo if demodulation video output 44 fmro fm broadcast output 45 vcc8v the supply voltage of sound switch 46 agc2sif the second sound intermediate frequency auto gain control 47 vp2 +5v 48 ifvo the video output of choose channel 49 audioin4l hd signal left track audio output 50 audioin4r hd signal right track audio output 51 cvbs4/y4 s-video luminance signal input 52 c4 s-video chroma signal input 53 audioin2l pc signal left track audio input 54 audioin2r pc signal right track audio input 55 cvbs2/y2 av cvbs signal input 56 audioin3l inside dvd module left track audio input 57 audioin3r inside dvd module right track audio input 58 cvbs3/y3 inside dvd module brightness signal input 59 c2/c3 inside dvd module chroma signal input 60 audoutlsl main channel left track output 61 audoutlsr main channel right track output 62 audouthpl earphone channel left track output 63 audouthpr earphone channel right track output 64 cvbs/pip cvbs/pip output 65 svm scan modulate output 66 fbiso flyback input/sandcastle output or composite h/v timing output 67 hout horizontal sync signal output www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 15 - model no.: LCT-20CHST version: 1.0 68 vsscomb grounding 69 vddcomb +5v 70 vin v signal input 71 uin u signal input 72 yin y signal input 73 ysync y signal input for sync separate 74 yout y signal output 75 uout u signal output 76 vout v signal output 77 inssw3 rgb/ypbpr insert identify signal input 78 r/prin3 r/pr signal input 79 g/yin3 g/y signal input 80 b/pbin3 b/pb signal input 81 gnd3 grounding 82 vp3 +5v 83 bclin beam current limiter input 84 blkin black current input 85 ro r basic color signal input 86 go g basic color signal output 87 bo b basic color signal output 88 vdd3 +3.3v 89 vrefad_neg 0v 90 vrefad_pos +3.3v 91 vrefad audio adc re.voltage 92 gnda grounding 93 vdda +1.8v 94 vdd3a +3.3v 95 vssadc grounding 96 vadc +1.8v 97 int0 remote control signal input 98 p10/int1 dpf clock line 99 p11/t0 dpfdata line 100 vddc2 +1.8v 101 vssc2 grounding 102 p04/12sws mst reset signal 103 p03/12sclk hd pc select control signal 104 p02/12sdo2 power amplifier standby control signal 105 p01/12sdo1 tv_dpf select control signal www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 16 - model no.: LCT-20CHST version: 1.0 106 p00/12sdii/o turn on control signal 107 p13/t1 mst chip select signal 108 p16/scl uoci2c bus clock line 109 p17/sda uoci2c bus data line 110 vddp +3.3v 111 p20/tpwm red indicator light control signal 112 p21/pwm0 green indicator light control signal 113 p22/pwm1 tft power supply control signal 114 p23/pwm2 inside dvd module power supply control signal 115 p30/adc0 reserve io port 116 p31/adc1 earphone insert identify signal input 117 vddc1 +1.8v 118 vdd18 +1.8v 119 p32/adc2 dvd key-press signal input 120 p33/adc3 tv key-press signal input 121 vssc grounding 122 p24/pwm3 background control signal output 123 p25/pwm4 saw filter control signal 124 vddc3 +1.8v 125 vssc3 grounding 126 p12/int2 mst interrupt signal input 127 p14/rx mst data line 128 p15/tx mst clock line www.datasheet.net/ datasheet pdf - http://www..co.kr/
-17 - model no.: LCT-20CHST version: 1.0 tda15021h inside block diagram www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 18 - model no.: LCT-20CHST version: 1.0 c. tda9178 introduction tda9178 is a analog signal processor with standa rd yuv input and output interface .it provid three main process function: luminance vector, co lor vector and spectrum pr ocess. it can finish comprehensive picture improving function independently. the characteristics of the tda9178 are below: luminance transient improvement (lti), colour transient improvement (cti) variable gamma control self-suitable black level extend control skin color correction, green intensity ,blue extend noise measurement and reduced noise process founction line width control (lwc) tda9178 pin description: pin pin name function 1 sand castle input sand castle input 2 not connected grounding 3 adc input 1 a/d convertor input 1 4 adc input 2 a/d convertor input 2 5 adc input 3 a/d convertor input 3 6 luminance input y input 7 address selection input i2c address choose input port 8 u signal input u input 9 v signal input v input 10 test pin grounding 11 serial clock input (i2c-bus) i2c bus clock signal 12 not connected not connected 13 not connected not connected 14 serial data input/output (i2c-bus) i2c bus data signal 15 decoupling digital supply connect decouple capacitor external 16 v signal output v signal output 17 u signal output u signal output 18 ground ground 19 luminance output y signal input 20 supply voltage supply power 21 scavem output scan velocity modulate output 23 not connected grounding 24 not connected grounding www.datasheet.net/ datasheet pdf - http://www..co.kr/
-19 - model no.: LCT-20CHST version: 1.0 tda9178 inside block diagram: www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 20 - model no.: LCT-20CHST version: 1.0 d. tda1517awt brief: the tda1517atw is a double chan nel class-ab power amplifier contained in a plastic heat sink thin shrink small outline package (htssop20). the device is primarily developed for multimedia applications. ? outside circuit is simple ? mute, standby is controllable ? temperature protect circuit ? low noise switch ? constant gain tda1517 pin description: pin pin name function 3 non-inverting input audio input 5 supply voltage ripple rejection bias circuit filter 8, 9 output audio output 12, 13 n.c. not connected 15, 16 supply voltage 12v power supply 17 mode select switch work mode select 18 inverting input reverse input terminal connect capacitor to ground 1, 2, 4, 6, 7, 10, 11, 14, 19, 20 gnd ground www.datasheet.net/ datasheet pdf - http://www..co.kr/
-21 - model no.: LCT-20CHST version: 1.0 tda1517 inside block diagram: www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 22 - model no.: LCT-20CHST version: 1.0 signal processing flowchart this chapter mainly introduces analog signals proc ess, video intensify process, tv system control process, tv supply system of the europe lcd tv. 1. analog signals process a. if/rf process completed by taf5-e2i21rw2 rf tuner, output if signal. the function of rf tuner is below: pin symbol function 1 agc auto gain control voltage 2 tu the tv do not connect 3 add ground 4 scl i 2 c bus clock 5 sda i 2 c bus data 6 bm +5v power supply 7 bm +5v power supply 8 nc not connected 9 btl +32v power supply form 0 32v tune voltage 10 nc not connected 11 if if signal output 2. image and sound process uoc chip receives the if signal separated from saw, detect and decode. output rgb color analog signals from the 85, 86, 87 pin respectively. output the main channel l, r audio signal from 60, 61 pin. output earphone channel l, r audio signal from 62, 63 pin. additional, part number u7, tda9178 complete the enhancement of quality of the picture, by the output 74, 75, 76 pin of uoc and the input 70, 71, 72 pin, combined with uoc to form a loop circuit. further, av, s-video, yc signal of inside dvd (some types of tv have not) is also decoded inside of uoc chip, switch internal uoc with tv input and output a rgb color analog signal, send it to back-end process. www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 23 - model no.: LCT-20CHST version: 1.0 3. digital signal process the analog rgb signal output from uoc and rgb signal output from dfp are switched and selected by a pi5v330a, input it into the 65, 63, 60 pin of mst518. the rgb signal output from computer and hd-ypbpr signal are switched and selected by another pi5v330a, input into the 75, 72, 70? of mst518. this two channel rgb signal are switched inside mst518, then ad converter, video format transition, at last output digital color signal, which is suitable for tft drive circuit. mst518 process the pixels ratio converting of input video signal, the image auto optimization process, then process memory buffer, scaler, chroma matrix ci rcuit, chroma look-up table, chroma space gain, etc. output correspon ding standard physical resolution digital color signal and corresponding sync, clock signal to tft, control the tft to display image correctly. 4. tv power supply system: a. the supply power system of the main ic is below: 12v:the unit main power supply +34v:rf tuner tune voltage vcc5: stable and constant +5v power supply vcc5a: +5v power supply software can turn off v3_3d:uoc digital part supply power supply v1_8v1:uoc digital part constant supply power supply v1_8v2:uoc digital part power supply can be turned off v2_5m:mst518 digital core supply power supply v3_3m:mst518 supply power supply www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 24 - model no.: LCT-20CHST version: 1.0 b. the constitute and distributing of the tv lm2596- 5.0 7805 double voltage irf7316 ncp1117 lm 1084_3 .3v lm 1117_2 .5v u13 u11 vcc5 u18 u8 l3 c188 vcc5 +32v vcc5a to inverter to tda9178 v3_3m v2.5m v3_3d 12v vcc5_sw u14 u15 pwron pwron 7808 12va npc1117d u22 v1_8v1 u17 filter filter filter filter vpo vad vpll vdpll filter vdd ntms10 p02r v1_8v2 q9 ntms10 p02r vlcd u19 fb39 fb40 fb41 v3_3m vcc5 12v lm2596- 5.0 u23 l6 c294 to dpf or dvd 12v www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 25 - model no.: LCT-20CHST version: 1.0 5. the main element in main board and location of socket and definition a 1 3 2 4 5 6 7 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 k e l www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 26 - model no.: LCT-20CHST version: 1.0 socket definition number name connect object function description 1 jp1 connect socket +12v, +12v, gng, gnd(use when inside power supply plank jp2 not use ) 2 jp2 connect adapter +12v, gnd, gnd use when outside connect adapter jp1not use 3 j8 connect outside vga audio input 4 j1 connect outside vga input 5 j3 connect outside hd-ypbpr input 6 j4 connect outside hd audio input 7 j2 connect outside scart signal input 8 j20 connect outside av input 9 j9 connect inside dvd signal input 10 j21 connect inside dvd signal input 11 j7 connect inside dvd k panel look circuit diagram the second pin is 3.3v 12 j12 connect earphone output panel 13 j14 connect speaker 14 j13 connect speaker 15 j6 connect tv k panel look circuit diagram, the second pin is 3.3v 16 j5 connect remote control look circuit diagram, the fifth pin is 3.3v 17 j11 uoc debug socket 18 j10 dpf digital photo-frame signal input 19 j17 connect display screen ttl screen au 20?, 15? 20 j16 connect display screen lvds screen samsung 15?, 17? 21 j22 connect display screen ttl screen lg 20?, 17? 22 j15 mst518 debug socket 23 j19 supply dvd or dpf power look circuit diagram, the first, second, third pin are 3.3v 24 j18 connect inverter +12v, +12v, poor light switch, gnd, dnd, gnd www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 27 - model no.: LCT-20CHST version: 1.0 explain of main element no. name element function description a a1 rf tuner taf5-e2i21rw2 rf input, if output b u2 uoc(tda15021h) video decode and mcu control c u3 mst518 ad converte r and format transition d u20 pi5v330a video switch on/off e u6 pi5v330a video switch on/off f u11 irf7316 mos switch g u9 lm2596-5.0 linear voltage ic h u23 lm2596-5.0 linear voltage ic i u19 ntms10p02 mos switch j u21 tda1517awt audio power amplifier k u8 tda1517awt audio power amplifier l u4 24lc32a eeprom(store user control information) m q9 si2311ds mos switch n u12 irf7316 mos switch o u1 24lc21a eeprom(store display parameter information) www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 28 - model no.: LCT-20CHST version: 1.0 typical troubleshooting flowchart 1. typical troubleshooting flowchart a. not anything (haven?t sound , haven?t picture, haven?t indicator light), and not respond key-press, remote control. no answer,no key press,no remote control is outside adapter(or inside) output 12v normal? mend or change adapter no the connection of main board and key press ,remote plane is reliable or not? yes reset the connect lines is u13 www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 29 - model no.: LCT-20CHST version: 1.0 b. have sound no picture, indicator light work normally indicator light work,but black screen when pressing down the power supply key observe back lamp is on or off no yes u13 ? u22 output voltage is normal or not? check u13 ? u22 outside circuit no yes check each supply power pin voltage which output from u13 ? u22 to u2 is normal or not? change u2 1 ? check supply power pin outside parts of an apparatus 2 ? check the jointing is ok or not yes one pin no voltage cheeck inverter supply power voltage and connect line www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 30 - model no.: LCT-20CHST version: 1.0 c. white screen: the reason of the troubles hoot is the signal electrode electrode haven?t working voltage. the tft is always in transparent condition, so the whole screen is in white raster. vlcd of screen socketj16(j17 www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 31 - model no.: LCT-20CHST version: 1.0 d. picture abnormal, colo r abnormal, short of color observe the picture is different in one condition by the mode of switch signal source chec k u20 and i t ? s outsi de ci rcui t ,check the q12 ? q1 4 ? q15 i s nor m al or not chec k u6 and i t ? s outsi de ci rcui t i s nor m al or not check the jointing of screen socket j16 ? j17 ? j22 in main board is ok or not,the connection is ok or not tv ? av condition picture different hd ? vgacondition picture different all appear picture different normal check the output of 85th ? 86th ? 87th pin of u2 check fb1 ? fb2 ? fb3 ? fb4 ? fb5 inductance are normal or not check u2 outside circuit is normal or not,change fault ones normal normal www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 32 - model no.: LCT-20CHST version: 1.0 2. the example of service example 1: can?t turn on the tv troubleshoot phenomenon: after connect power supply and turn on the power supply , the ?akira? logo will not appe ar on screen. press the key or use the remote control, the tv has no reflect, no display and black screen. the process of maintenance: remove the plug of adapter output, measure adapter output voltage is +12v,the adapter works normally. check the connection with key-press panel remote control panel and mainboard. if it is ok, the problem must be mcu not work. first check supply power of u2 chip. connect power supply, then measure the voltage of the 2, 4 pin of u13ntms10p02 is 0.2v, and over-heat, the reason must be short circuit of power supply backend. you should remove the plug quickly. otherwise the chip must be ba d. use the multimeter to measure, confirm it is short circuit to gr ound. the places, which connect u2 with 3.3v voltage are so many, you should disconnect and measure it one by one. when you disconnect the c68, if it is normal, c68 grounding short circuit. example 2: no picture in vga mode troubleshooting phenomenon: in tv/av mode, the image and sound is ok, pc (in vga mode) is no picture, but have state icon. the process of maintenance: first check the signal source, signal socket, plug are ok or not. because during switch the mode, the image display normally in non-pc mode, it is proved that the backend image public processing channel is ok, namely u3mst518 and backend image signal processing circuit work normally. in pc mode, measure the arbitrary pin of 4, 7, 12 pin, image date terminal of u6p15v330a by oscillograph there are no waveform, change u6p15v330a and the troubleshooting phenomenon disappear. example 3: no picture in vga mode and the ?sig nal beyond boundary? is appeared on screen. troubleshooting phenomenon: no picture in vga mode and the ?signal beyond bound? is appeared on screen in tv/av mode, image, sound is ok. the process of maintenance: first check the signal output from the signal source is not standard or beyond the resolution, which is supported by tft except of the two cases, the phenomenon comes from the tft display. under general circ umstance it is caused by the abnormal of the horizon sync impulse, vertical sync impulse of vga signal. inspect the 38 th , 39th pin of u3 by oscillograph. find the magnitude of horizon sync impulse is below the normal, measure the waveform of 13 th pin of vga j1. if it is ok, so maybe resistance of the r23 will be large, measure the resistance of r23 is 10k ? , but the rating resistance is 1k ? , so it is obvious that the magnitude of horizon sync impulse is attenuated too large caused by value of couple resistance r23 become large. so the pixel clock inside of the mst518 can not vibrate, result in the a/d converter of mst518 internal can not work norm ally. so appear no picture in vga mode and ?signal beyond boundary? on tft screen. www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 33 - model no.: LCT-20CHST version: 1.0 example 4: can control tv by remote control, but can not control tv by key-press panel troubleshooting phenomenon: image sound is ok under any source, use remote control to operate each function is ok, but can not control by using the key-press panel, failure completely. the process of maintenance: first check the socket of j6 on mainboard, the solder and touch of connector are ok or not. if it is ok, check the key-press panel ,meas ure each resistance, find r1 open circuit, change it . example 5: the image is ok after turn on the tv, but left speaker has no sound output troubleshooting phenomenon: the image is normal in tv mode, but the left speaker has no sound output, using remote control to operate, each function is ok. use av, pc audio input, is still no sound output. the process of maintenance: measure the waveform from 60 th pin of uoc by oscillograph, according to signal flow chat, measure r227 r157 u8 c130 one by one, and observe the waveform is ok or not, find the back end of c130 have not waveform, change c130 and troubleshooting disappear. www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 34 - model no.: LCT-20CHST version: 1.0 spare part lists and easy damage part list spare part lists: tm150f7e: material name type (module no.) material code remark main board groupware juj6.690.033-2 8669000332j remote control panel groupware juj6.694.016 8669400160j key-press panel groupware juj6.694.017 8669400170j earphone panel groupware juj6.695.002 8669500020j tft ltm150xh-l06 68219601565 inverter panel groupware inv15-474 59324104740 samsung screen use dynamoelectric speaker y2898-01-5w-4 ? 56231105042 remote control klc5a(jul2.018.351) 8201803510l power supply adapter fsp084-1cd02c 67128084025 w170f7e: material name type (module no.) material code remark main board groupware juj6.690.033-1 8669000331j main board groupware juj6.690.033-6 8669000336j remote panel groupware juj6.694.016 8669400160j key-press panel groupware juj6.694.015 8669400150j earphone panel groupware juj6.695.002 8669500020j tft ltm170w1-l01 68219601701 tft lc171w03 68211710305 inverter panel groupware inv17-4505 59324125010 samsung screen use inverter panel groupware inv17-6506 59324165060 lg screen use dynamoelectric speaker y2898-01-5w-4 ? 56231105042 remote control klc5a(jul2.018.351) 8201803510l inner power supply module fsp084-1cd02c 67128084025 www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 35 - model no.: LCT-20CHST version: 1.0 tm201f7e: material name type (module no.) material code remark main board groupware juj6.690.033 8669000330j main board groupware juj6.690.033-5 8669000335j remote panel groupware juj6.694.016 8669400160j key-press panel groupware juj6.694.015 8669400150j earphone panel groupware juj6.695.002 8669500020j samsung screen use tft a201sn01 68219020110 lg screen use tft lc201v02 68212010235 inverter panel groupware inv18-605d 59324106054 inverter panel groupware inv20-606a(d) 59324126061 dynamoelectric speaker y38106-01-5w-4 ? 56231105043 samsung screen use remote control klc5a(jul2.018.351) 8201803510l lg screen use inner power supply module fsp084-1cd02c 67128084025 samsung screen use www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 36 - model no.: LCT-20CHST version: 1.0 factory mode the method of entering into factory mode: turn down the volume to 0, press down the key of ?mute? in remote control, then press the key of ?menu? in remote control. press ch+ and ch- choose the items which need to adjust. the method of exiting from factory mode: press the in remote control, after exiting from the factory mode, you should turn on the tv again. now the introduction of the modes which are often used is below, the others are design parameter mode, not permit to modify. m6 the fast key is the key of ?language? ifpl adjust the scale of picture and sound the if signal m6 the fast key is the key of ?language? top tune agc voltage m13 the fast key is the key of ?dvd? dvd the switch of dvd source dpf the switch of dpf source m17 logo logo display or not blueback blue screen switch m24 auto auto revise m25 the fast key is the key of ?title? init initialization program m28 the fast key is the key of ?0? iic bus open open bus www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 4 5 6 a b c d 6 5 4 3 2 1 d c b a title 1 2 0 8 . d d b ls07-eu-lcdtv hd_aud_lin sc_aud_rout sc_aud_lout scart_b_in scart_g_in scart_r_in sc_aud_rin sc_aud_lin stat_av fblin sc_cvbsin sc_cvbsout hd_aud_rin pc_aud_lin pc_aud_rin pr_in pb_in hd_y_in tv_ir led_red led_green hd_y_in pb_in pr_in g_rin g_gin g_bin hd_pc_sw sogin1 pc_rin pc_gin pc_bin pc_hs pc_vs pc_hsin pc_vsin hd_pc_sw dvd_c2in dvd_y2in dvd_aud_lin dvd_aud_rin pc_rin pc_gin pc_bin pc_vs pc_hs update_con vga_sda vga_scl ddc_sda ddc_scl tv_key_dec dvd_key_dec sda_uoc scl_uoc 02_scart_pc_hd 02_scart_pc_hd if_out +34v scl_uoc sda_uoc agc 03_tuner 03_tuner av_cvbsin y_out u_out v_out tv_r tv_g tv_b tv_hsync sandc agc m_lout m_rout hp_lout hp_rout tv_ir led_green led_red tv_key_dec if_out sda_uoc scl_uoc pc_aud_lin v_in u_in y_in hd_pc_sw csz_mst sda_mst scl_mst rst_mst astb scl_dpf av_aud_lin av_aud_rin hd_aud_lin hd_aud_rin sda_dpf pc_aud_rin scl_uoc sda_uoc on_panel on_backlite dvd_key_dec hp_ident int_mst tv_dpf_sw pwron dvd_c2in dvd_y2in dvd_aud_lin dvd_aud_rin en_dpf_dvd mute tv_vsync svideo_y1in svideo_c1in 04_uociii tda15021h 04_uociii tda15021h sandc v_in v_out y_in u_out u_in y_out sda_uoc scl_uoc tv_hsync tv_dpf_vsin tv_dpf_hsin tv_b tv_r tv_g dpf_rin dpf_gin dpf_bin tv_dpf_rin tv_dpf_gin tv_dpf_bin tv_dpf_sw tv_dpf_sw dpf_rin dpf_gin dpf_bin tv_vsync 05_tv_dpf_mux 05_tv_dpf_mux tv_dpf_hsin tv_dpf_vsin pc_hsin pc_vsin tv_dpf_binm tv_dpf_bin tv_dpf_ginm tv_dpf_gin tv_dpf_rinm tv_dpf_rin sogin1 g_rin g_gin g_bin g_rm g_gm g_bm sda_mst scl_mst csz_mst rst_mst int_mst rb[0..7] gb[0..7] bb[0..7] pclk pden phsync pvsync rx0+ rx0- rxclk- rxclk+ rx1- rx1+ rx2- rx2+ rx3- rx3+ tv_dpf_rinm tv_dpf_ginm tv_dpf_binm g_rm g_gm g_bm sda_mst scl_mst csz_mst rst_mst 06_mst518 06_mst518 bb[0..7] pclk phsync rb[0..7] pvsync gb[0..7] pden rx0+ rx0- rxclk- rxclk+ rx1- rx1+ rx2- rx2+ rx3- rx3+ 07_panel 07_panel hp_rout hp_lout hp_ident m_lout m_rout astb mute 08_sound amplifier 08_sound amplifier +34v pwron on_panel vlcd on_backlite en_dpf_dvd sda_dpf scl_dpf 09_power supply 09_power supply update_con vga_scl vga_sda ddc_sda ddc_scl scl_uoc sda_uoc 10_vga_update 10_vga_update - 37 - model no.: LCT-20CHST version: 1.0 circuit diagram www.datasheet.net/ datasheet pdf - http://www..co.kr/
title _ e u _ f o r _ r32 10k hd_aud_lin r31 75 r92 75 r79 75 r13 100 r12 100 r11 100 r10 330 r9 330 r65 10k r78 47k r75 10k r39 10k r40 47k r62 100 r64 100 c6 100pf c136 100pf c10 100pf c11 100pf c7 100pf c9 100pf c8 100pf c17 100pf c18 100pf c138 100pf sc_aud_rout sc_aud_lout scart_b_in scart_g_in scart_r_in r36 75 r37 75 r38 3.3k sc_aud_rin sc_aud_lin stat_av fblin sc_cvbsin q8 2sa1162 sc_cvbsout r7 220 vcc5a c71 47uf16v r8 75 ls07-eu-connectors r34 47k r33 10k hd_aud_rin r35 47k r51 10k pc_aud_lin r53 47k r52 10k pc_aud_rin r54 47k r180 22k pr_in pr r179 22k pb_in pb y hd_y_in r178 22k j8 gcc02-0085 tv_ir led_red led_green 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 j2 scart c15 100pf c16 100pf c22 100pf c23 100pf r217 75 r218 75 r219 75 q18 2n3904 q13 2n3904 r222 4.7k r224 6.8k r221 4.7k r223 6.8k 12va r225 1k r226 1k r220 100 c198 10uf16v c137 10uf16v c199 100uf16v c233 0.1uf 3 6 j3c av-1-3 2 5 j3b av-1-3 1 4 j3a av-1-3 1 4 j4a av-1-2k 2 5 3 j4b av-1-2k s2a 3 s2b 6 s2c 13 s1a 2 s1b 5 s1c 14 /en 15 dd 9 s2d 10 s1d 11 da 4 db 7 in 1 dc 12 gnd 8 vcc 16 u6 pi5v330a hd_y_in pb_in pr_in c120 0.1uf c121 10uf16v fb38 ecb2012m800t vcc5a g_rin g_gin g_bin hd_pc_sw r152 100 r153 100 r154 100 c124 47nf c122 47nf c123 47nf r155 390 c133 1nf sogin1 pc_rin pc_gin pc_bin c125 0.1uf 3 2 1 14 7 u16a 74lvc126a 6 5 4 u16b 74lvc126a pc_hs pc_vs pc_hsin pc_vsin hd_pc_sw v3_3m 11 12 13 u16d 74lvc126a 8 9 10 u16c 74lvc126a 1 2 3 4 5 j5 con5 v3_3d 1: select pc 0: select ypbpr 1 2 3 4 5 6 7 8 9 10 11 12 j9 con12 c184 270pf fb25 eci2012m2r2kt c185 270pf c182 330pf fb21 eci2012m2r2kt r50 75 c183 330pf r55 75 dvd_c2in dvd_y2in r25 10k dvd_aud_lin r44 47k r27 10k dvd_aud_rin r46 47k c135 100pf c146 100pf dvd signal input r26 10k r48 10k r56 10k fb52 ecbp2012m700t fb51 ecbp2012m700t fb53 ecbp2012m700t vcc5a vcc5a vcc5a c24 10uf16v c21 10uf16v c14 10uf16v pc_rin pc_gin pc_bin vgin vga_v pc_vs vrin vbin pc_hs c3 12pf c1 12pf c2 12pf fb2 ecbp2012m700t fb1 ecbp2012m700t r1 75 r3 75 r2 75 fb3 ecbp2012m700t 1 3 2 d3 bav99 1 3 2 d2 bav99 1 3 2 d5 bav99 1 3 2 d1 bav99 1 3 2 d4 bav99 vcc5 vcc5 pc_vs pc_hs fb5 ecbp2012m801t c12 220pf c13 33pf r22 1k fb4 ecbp2012m801t r23 1k r24 2.2k r21 10k c12,c13 option (open for better phase) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 j1 1-788624-2/amp update_con vga_sda vga_scl vga_v vga_pwr r42 10k 1 3 2 d8 bav99 1 3 2 d7 bav99 nc1 1 nc2 2 nc3 3 gnd 4 sda 5 scl 6 vclk 7 vcc 8 u1 24lc21a c20 0.1uf 3 2 1 d6 bav70 r45 15k r43 15k vcc5 r41 option ddc_sda ddc_scl tv_key_dec v3_3d 1 2 3 j6 con3 1 2 3 j7 con3 dvd_key_dec v3_3d r29 47k r20 47k sda_uoc scl_uoc 1 2 3 4 j11 con4 vcc5 use for wisp and wic32 r16 10 - 38 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 4 a b c d 6 5 4 3 2 1 d c b a philips agc 1 tu 2 add 3 scl 4 sda 5 +5v 6 +5v 7 nc 8 btl 9 nc 10 if-out 11 pad 12 pad 13 pad 14 pad 15 a1 taf5-e2i21rw2 c239 22uf16v c147 0.1uf r113 10k r111 68k c240 47uf16v c241 47uf16v c148 0.1uf r60 47 r61 47 r112 10k vcc5a if_out agc sda_uoc scl_uoc +34v ls07-eu-tuner c244 4.7uf/50v c242 0.1uf l5 eci2012k220t d11 upc574 r47 100 r105 4.7k r41 3.3k r110 100 c204 10nf ifgnd vcc5a c221 10nf c224 22nf ifgnd scl_uoc sda_uoc agc r109 0 r49 10 c227 100uf16v c209 10nf l2 eci2012kr56kb fb32 eci2012k220t d10 in4148 fb35 ecb2012m800t q1 2sc388 5 - 39 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
3 1 2 a b c d 4 3 2 1 d c b a title u _ f o r _ m y_out y_out vdd5a_1 vdd5a_2 vdd5a_2 decdig vdd5a_1 decdig uoc_vifin1 uoc_vifin2 uoc_sif1 uoc_sif2 uoc_vifin1 uoc_vifin2 uoc_sif1 uoc_sif2 saw_sw r93 100k r91 12k c88 6.8nf c86 1uf/50v r94 1k c56 2.2uf c75 0.1uf c91 4.7uf c67 0.1uf c92 3.3nf c29 0.1uf c90 0.1uf c87 47uf16v c26 0.1uf c30 0.1uf c31 0.1uf r63 0 c32 0.1uf c62 1uf/50v c63 1uf/50v c68 0.1uf c72 10uf16v c76 220nf c80 220nf c85 100uf16v c83 0.1uf r74 4.7k fb12 r104 10k r103 10k r126 10k r81 100 r80 100 fb17 c54 0.1uf fb13 fb14 r68 100 r69 100 r76 39k r119 2.2k c77 0.1uf c73 10uf16v c69 0.1uf d9 ba792 c33 4.7uf/50v c34 1nf r71 27k r70 100 c107 220nf r129 10k fb18 c81 0.1uf c49 680nf c48 680nf c47 680nf r72 680 c37 0.1uf c43 0.1uf c40 47uf16v fb9 c35 10nf fb19 c52 100uf16v r77 390 c89 330nf c64 0.1uf c38 0.1uf c44 0.1uf c41 10uf16v r82 100 fb15 r98 47 c74 10uf16v c78 0.1uf c70 0.1uf r99 47 r95 100 c45 220nf fb16 c51 100uf16v c46 0.1uf c96 100uf16v c97 0.1uf c94 0.1uf fb20 saw 1 2 3 4 5 t1 saw 1 2 3 4 5 t2 r73 47k c58 220nf r120 1k c59 2.2uf c99 33pf c101 33pf c82 0.1uf c79 220nf r67 100 c53 10uf16v fb8 c60 2.2uf r66 2.7k r118 2.2k c39 47uf16v c42 0.1uf c36 0.1uf c103 10nf fb10 vcc5a v3_3d v1_8v1 v3_3d v1_8v1 v3_3d vcc5a v1_8v2 v1_8v2 v1_8v1 v3_3d vcc5 vcc5a v1_8v2 ifgnd ifgnd ifgnd ifgnd sc_cvbsin y_out u_out v_out tv_r tv_g tv_b tv_hsync sandc agc m_lout m_rout hp_lout hp_rout tv_ir led_green led_red tv_key_dec if_out sda_uoc scl_uoc ls07-eu-uociii tad12021h pc_aud_lin v_in u_in y_in hd_pc_sw r97 100 r100 100 csz_mst sda_mst scl_mst rst_mst astb scl_dpf y1 24.576m c55 2.2uf hd_aud_lin hd_aud_rin sda_dpf pc_aud_rin r85 3.3k r87 3.3k r88 3.3k r89 3.3k r90 3.3k v3_3d r107 3.3k r102 3.3k a0 1 a1 2 a2 3 gnd 4 sda 5 scl 6 wp 7 vcc 8 u4 24lc32a c95 0.1uf scl_uoc sda_uoc r84 3.3k on_panel on_backlite dvd_key_dec c61 2.2uf c57 2.2uf saw_sw hp_ident r101 100 r183 3.3k int_mst r83 3.3k tv_dpf_sw r86 3.3k vdd5a_1 15 vdd5a_2 47 vdd5a_3 82 gnda1 18 gnda2 40 gnda3 81 vddc 3 vssc 2 vddc 124 vssc 125 vddc 100 vssc 101 vddc 117 vssc 121 vdd3a 4 vdd3 88 vdd3a 94 gnda 12 vcomb 69 vsscomb 68 vref 90 vss_ref 89 gnda 1 vadc 96 vssadc 95 vdd18 118 vdda 93 vddp 110 gndaud 92 xin 10 xout 11 vref_sdac1 5 gref_sdac1 6 vref_sdac2 7 gref_sdac2 8 vref_sdac3 9 decdig 14 v8swtch 45 u2a tda15021h_1 fblin 77 r3/pr 78 g3/y 79 b3/pb 80 v/r2/pr 70 u/b2/pb 71 y/g2/y 72 ysync 73 cvbs3/y3 58 c2/c3 59 cvbs2/y2 55 cvbs4/y4 51 c4 52 audio2_inl 53 audio2_inr 54 audio3_inl 56 audio3_inr 57 audio4_inl 49 audio4_inr 50 audio5_inl 34 audio5_inr 35 vguard 13 ph1lf 17 ph2lf 16 secpll 19 decbg 20 ewd/avi 21 vdrb 22 vdra 23 vifin1 24 vifin2 25 vsc 26 iref 27 gndif 28 sif1 29 sif2 30 agc 31 eht 32 ssif 33 audoutsl 36 audoutsr 37 decsdem 38 qsso 39 sifagc 42 pllif 41 ifvo 43 fmro 44 svo/cvbsi 48 audio_out_hpl 62 audio_out_lsl 60 audio_out_lsr 61 audio_out_hpr 63 cvbso/pip 64 svm 65 fbiso 66 hout 67 yout 74 uout/inssw2 75 vout/swo1 76 bclin 83 blkin 84 rout 85 gout 86 bout 87 refad 91 int0 97 p10/int1 98 p11/t0 99 p04/i2sws 102 p03/i2sclk 103 p02/i2sdo2 104 p01/i2sdo1 105 p00/i2sdi1/0 106 p13/t1 107 p16/scl 108 p17/sda 109 p20/tpwm 111 p21/pwm0 112 p22/pwm1 113 p23/pwm2 114 p30/adc0 115 p31/adc1 116 p32/adc2 119 p33/adc3 120 p24/pwm3 122 p25/pwm4 123 p12/int2 126 p14/rx 127 p15/tx 128 agc2sif 46 u2b tda15021h_2 select y2 - saronix 9922 520 20264 r210 3.3k c98 220pf vcc5 vcc5 c106 47uf16v r211 10 r212 100 r213 100 r214 100 r215 100 r216 100 q7 2n3904 r227 100 r228 100 r229 100 r230 100 r231 100 r232 100 r233 100 r235 100 r236 100 r238 100 r234 100 r114 100 r115 3.3k pwron r106 3.3k c248 100uf16v fb42 c151 0.1uf c247 100uf16v gnd 1 out 2 vin 3 4 4 u22 ncp1117dt18rk c152 0.1uf c100 0.1uf k3953m k9656m r125 10k ifgnd ifgnd c149 0.1uf c150 0.1uf dvd_c2in dvd_y2in c246 2.2uf c245 2.2uf dvd_aud_lin dvd_aud_rin vcc5 r116 3.3k r117 3.3k en_dpf_dvd ifgnd fb50 ifgnd v1_8dig r96 100 fb56 v3_3d v1_8v1 fb43 q9 si2311ds r243 10k vcc5 q26 2n3904 mute r246 0 vcc5 tv_vsync vcc5a c84 0.1uf c5 0.1uf r167 100 c139 0.1uf c4 0.1uf scart_r_in scart_g_in scart_b_in fblin r170 1k sc_cvbsout sc_aud_lin sc_aud_rin stat_av r237 100 sc_aud_lout sc_aud_rout c140 10uf16v c141 10uf16v r169 100 r168 100 - 40 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 a b c d 4 3 2 1 d c b a title u _ f o r _ m p _ ls07-eu-mux/audio amp/tda9178 yin 6 uin 8 vin 9 you 19 uout 17 vout 16 sc 1 sda 14 scl 11 vcc 20 adcext1 3 adcext2 4 adcext3 5 decdig 15 adr 7 tp 10 vee 18 nc 23 nc 24 nc 2 u7 tda9178t r145 100 r146 100 r147 100 c119 0.1uf c114 100uf16v 12va sandc v_in v_out y_in u_out u_in y_out sda_uoc scl_uoc tv_hsync tv_dpf_vsin tv_dpf_hsin c115 0.1uf in 1 gnd 2 out 3 4 4 u17 mc78m08cdt fb23 c113 0.1uf c112 100uf16v r131 10k r130 4.7k r133 470 r148 10k c117 10uf16v r139 4.7k r151 75 r150 470 r239 75 r240 75 r241 75 c250 22pf fb46 eci2012m2r2kt c255 470pf c256 470pf c251 22pf c252 22pf dd 9 s2d 10 s1a 2 in 1 s1b 5 s2a 3 s2b 6 s1c 14 s2c 13 dc 12 s1d 11 /en 15 da 4 vcc 16 gnd 8 db 7 u20 pi5v330a c258 470pf c257 470pf fb47 eci2012m2r2kt c108 10uf16v c237 0.1uf c238 10uf16v c249 10uf16v c153 0.1uf c154 0.1uf fb45 eci2012m2r2kt c253 470pf c254 470pf r137 4.7k r141 470 r138 10k c116 10uf16v r142 75 r134 75 vcc5a vcc5a tv_b tv_r tv_g dpf_rin dpf_gin dpf_bin c105 12pf c93 12pf c102 12pf fb7 ecbp2012m700t fb11 ecbp2012m700t r4 75 r6 75 r5 75 fb6 ecbp2012m700t tv_dpf_rin tv_dpf_gin tv_dpf_bin r57 100 r58 100 r59 100 c234 47nf c235 47nf c236 47nf tv_dpf_sw 1: select dpf 0: select tv r122 75 r121 75 tv_dpf_sw 1 2 3 4 5 6 7 8 9 10 11 12 13 j10 con13 dpf_rin dpf_gin dpf_bin dpf signal input dpf_vsin dpf_hsin fb54 ecbp2012m801t c264 220pf c265 33pf r140 1k fb55 ecbp2012m801t r149 1k r182 2.2k r132 10k c264,c265 option (open for better phase) fb44 ecb2012m800t fb37 ecb2012m800t q12 2n3904 q14 2n3904 q15 2n3904 tv_vsync 3 2 1 14 7 u10a 74lvc126a 8 9 10 u10c 74lvc126a v3_3m 11 12 13 u10d 74lvc126a 6 5 4 u10b 74lvc126a v3_3m r14 10k q2 2n3904 r15 3.3k - 41 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 4 5 6 a b c d 6 5 4 3 2 1 d c b a title 4 1 2 0 8 . d d b gb2 bb1 bb3 rb1 rb5 gb3 gb4 gb[0..7] gb5 gb6 gb0 rb0 bb4 bb[0..7] rb[0..7] rb2 bb2 bb6 gb7 bb0 rb6 gb1 rb4 bb7 rb3 bb5 rb7 fb27 ecbp2012m801t c178 10uf16v c262 0.1uf c162 10uf16v c170 10uf16v y2 14.318mhz r175 390 rin0 75 gin0 72 sogin0 73 bin0 70 rin0m 74 gin0m 71 bin0m 69 hsync0 38 vsync0 39 refp 79 rmid 78 ale/csz 82 wrz/mst_sda 83 rdz/mst_scl 84 hwresetz 33 int 85 pwm0 86 pwm1 87 ra0/lvackp 131 ra1/lvackm 132 ga0 115 ga1 116 ba0 103 ba1 104 rb0 15 rb1 16 avdd 48 avdd_pll 56 avdd 54 bypass 2 avdd 58 vddp 88 vddp 99 vddp 111 vddp 129 vddp 139 vddp 151 vddp 10 vddc 102 vddc 114 vddc 142 vddc 19 gnd 1 gnd 9 refm 80 gnd 21 gnd 37 gnd 20 gnd 42 gnd 45 gnd 51 gnd 57 gnd 76 gnd 81 gnd 89 gnd 100 gnd 101 gnd 59 gnd 112 xin 34 xout 35 ra2/lva2p 133 ra3/lva2m 134 ra4/lva1p 135 ra5/lva1m 136 ra6/lva0p 137 ra7/lva0m 138 ga2 117 ga3 118 ga4 119 ga5 120 ga6/lva3p 127 ga7/lva3m 128 ba2 105 ba3 106 ba4 107 ba5 108 ba6 109 ba7 110 rb2 17 rb3 18 rb4 23 rb5 24 rb6 25 rb7 26 gb0 5 gb1 6 gb2 7 gb3 8 gb4 11 gb5 12 gb6 13 gb7 14 bb0/lvb2p 147 bb1/lvb2m 148 bb2/lvb1p 149 bb3/lvb1m 150 bb4/lvb0p 153 bb5/lvb0m 154 bb6 3 bb7 4 oclk/lvbckp 145 lde/lvbckm 146 ddc_clk 30 ddc_dat 29 ddcrom_clk 31 ddcrom_dat 32 lhs/lvb3p 143 lvs/lvb3m 144 rext 55 rin1 65 rin1m 66 gin1 63 gin1m 64 sogin1 62 bin1 60 bin1m 61 hsync1 40 vsync1 41 gnd 113 gnd 130 gnd 140 gnd 141 avdd 77 avdd_mpll 36 vddp 22 bustype 125 ad0 91 ad1 92 ad2 93 ad3 94 ad4 95 ad5 96 ad6 97 ad7 98 gnd 152 u3 mst518 c181 0.1uf r123 0 fb30 ecbp2012m801t fb26 ecbp2012m801t c164 0.1uf c171 0.1uf c163 0.1uf c172 0.1uf c165 0.1uf c259 0.1uf c173 0.1uf c180 10uf16v c145 22pf c174 0.1uf fb29 ecbp2012m801t c176 0.1uf c175 10uf16v c177 0.1uf c144 22pf c260 0.1uf c261 0.1uf c263 0.1uf fb28 ecbp2012m801t r124 10k c143 0.1uf c166 0.1uf c179 0.1uf c167 0.1uf c142 0.1uf c168 0.1uf c169 0.1uf vdpll vdpll vad vdd v3_3m v3_3m v3_3m vpll vdd vpll vpo vad vpo vad v3_3m v2_5m tv_dpf_hsin tv_dpf_vsin pc_hsin pc_vsin tv_dpf_binm tv_dpf_bin tv_dpf_ginm tv_dpf_gin tv_dpf_rinm tv_dpf_rin sogin1 g_rin g_gin g_bin g_rm g_gm g_bm sda_mst scl_mst csz_mst rst_mst int_mst rb[0..7] gb[0..7] bb[0..7] pclk pden phsync pvsync ls07-eu-mst518 rx0+ rx0- rxclk- rxclk+ rx1- rx1+ rx2- rx2+ rx3- rx3+ r189 100 c159 47nf r190 100 c160 47nf r191 100 c161 47nf r186 100 c156 47nf r187 100 c157 47nf r188 100 c158 47nf tv_dpf_rinm tv_dpf_ginm tv_dpf_binm g_rm g_gm g_bm 1 2 3 4 5 6 j15 con6 sda_mst scl_mst csz_mst rst_mst vcc5 only for debug ga7 ga6 ra0 ra1 ra2 ra3 ra4 ra5 ra6 ra7 option: c263 and r123 - 42 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 4 5 6 a b c d 6 5 4 3 2 1 d c b a title 4 1 2 0 8 . d d b gb1 gbo6 bbo2 gb3 bb[0..7] bbo3 gb5 rb3 rb2 rbo7 rb5 gb0 gbo2 pclko bbo1 bb3 rb4 bb1 bb7 bbo5 bbo[0..7] bbo2 gbo0 gb6 bbo4 bbo0 rb6 bb4 rb[0..7] gbo3 rbo4 bb6 rb0 gb4 gbo[0..7] pvso pdeo pclko bbo6 rb1 rbo2 rbo[0..7] gbo6 rbo5 gbo5 pdeo gbo4 rbo7 gb7 bb2 pvso bbo5 gbo2 rbo6 gbo0 rbo6 rbo5 phso rbo4 rbo3 rbo2 bb5 rbo1 gb2 bbo4 gbo7 gbo5 rbo0 gbo1 rbo1 bbo7 rb7 bbo0 gbo4 bbo7 bbo3 bb0 gb[0..7] bbo6 gbo7 gbo3 bbo1 r127 33 rbo3 r128 33 c276 33pf r135 33 r136 33 c277 33pf c278 33pf rbo0 c279 33pf vcc 1 vcc 2 gnd 3 gnd 4 rxe3+ 18 rxe3- 17 rxec+ 15 rxec- 14 rxe2+ 12 rxe2- 11 gnd 10 rxe1+ 9 rxe1- 8 gnd 7 rxe0+ 6 rxe0- 5 gnd 13 gnd 16 gnd 19 gnd 20 j16 df14-20p-1.25h gbo1 l r nc 50 nc 49 nc 48 gnd 47 gnd 46 vcc 45 vcc 44 vcc 43 vcc 42 gnd 41 hsync 40 r5 31 r6 32 r7 33 gnd 34 gnd 36 de 37 gnd 38 vsync 39 dclk 35 r4 30 g5 21 g6 22 g7 23 gnd 24 r1 26 r2 27 r3 28 gnd 29 r0 25 b5 11 b6 12 b7 13 gnd 14 g1 16 g2 17 g3 18 gnd 19 g4 20 g0 15 b4 10 gnd 9 b3 8 b1 6 b2 7 b0 5 gnd 4 gnd 3 nc 2 nc 1 j17 fh12-50s-0.5sh bb[0..7] phso pclk phsync rb[0..7] pvsync gb[0..7] pden vlcd vlcd rx0+ rx0- rxclk- rxclk+ rx1- rx1+ rx2- rx2+ rx3- rx3+ r143 0 ls07-eu-15" 17" 20" lcd panel ra0 ra1 ra2 ra3 ra4 ra5 ra6 ra7 ga6 ga7 1 2 3 4 5 6 7 8 rn1 33 ohm 1 2 3 4 5 6 7 8 rn2 33 ohm 1 2 3 4 5 6 7 8 rn3 33 ohm 1 2 3 4 5 6 7 8 rn4 33 ohm 1 2 3 4 5 6 7 8 rn5 33 ohm 1 2 3 4 5 6 7 8 rn6 33 ohm cn1 33pf cn2 33pf cn3 33pf cn4 33pf cn5 33pf cn6 33pf 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 j22 dp13-40dp-1.25v pdeo vlcd - 43 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 4 5 6 a b c d 6 5 4 3 2 1 d c b a title 4 1 2 0 8 . d d b hp_rout hp_lout fb22 ecb2012m102t c110 0.1uf c109 22uf16v vcc5a c111 100uf16v c118 100uf16v + - 3 2 1 8 4 u5a tda1308 + - 5 6 7 u5b tda1308 vcc5 hp_ident in1+ 3 in2- 18 mode 17 svrr 5 sgnd 4 pgnd 10 pgnd 11 vdd 15 vdd 16 out1a 8 out1b 9 out2a 12 out2b 13 nc 1 nc 2 nc 6 nc 7 nc 14 nc 19 nc 20 u8 tda1517awt r157 2.2k r158 1.5k r160 2.2k r159 1.5k c126 220nf c127 220nf c128 100uf16v m_lout m_rout c130 470uf16v 12v 1 2 j13 2 hea pgnd 12v fb24 ecb2012m800t c132 470uf25v c129 0.1uf to l_spk r161 10k r156 4.7k astb pgnd q5 2n3904 c293 220uf16v d16 in4148 12v 12v r144 220 r164 22k r165 33k r163 100k ls07-eu-sound amplifier and headphone 1 2 3 4 5 6 j12 con6 to headphone r176 1k r177 3.3k q16 2n3904 q3 2sa1162 r162 8.2k q27 2n3904 mute r245 4.7k c296 4.7nf c295 4.7nf r201 15k r199 15k c229 470nf c104 470nf c267 470nf r197 5.6k r198 5.6k r108 3.3k r181 3.3k c268 680pf c269 680pf pgnd fb48 in1+ 3 in2- 18 mode 17 svrr 5 sgnd 4 pgnd 10 pgnd 11 vdd 15 vdd 16 out1a 8 out1b 9 out2a 12 out2b 13 nc 1 nc 2 nc 6 nc 7 nc 14 nc 19 nc 20 u21 tda1517awt c27 220nf c28 220nf c25 100uf16v c131 470uf16v 1 2 j14 2 hea pgnd 12v fb59 ecb2012m800t c50 470uf25v c19 0.1uf to r_spk pgnd pgnd fb60 r30 10k c66 47uf16v - 44 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 4 a b c d 4 3 2 1 d c b a title r _ m p _ 2 0 0 4 ls07-eu-power supply +12v +12v gnd gnd jp1 4pin_power vin 1 feedback 4 on/off 5 output 2 gnd 3 u9 lm2596-5.0 c189 0.1uf d12 1n5824 l3 68uh c192 1uf/50v c193 1uf/50v c194 1uf/50v c196 1uf/50v c197 1uf/50v c195 1uf/50v 12va l4 tem2011 vcc5 c190 0.1uf c186 0.1uf c187 470uf25v 12v r192 2.2k +34v 3 4 5 6 u11b irf7316 r195 10k c219 0.1uf r194 10k 1 2 7 8 u11a irf7316 12v 12va vcc5_sw vcc5 pwron r203 10k c228 0.1uf r202 10k gnd 1 out 2 vin 3 4 4 u13 ncp1117dt33rk c201 100uf16v c203 220uf16v c202 0.1uf c200 0.1uf c205 0.1uf fb31 vcc5 v3_3d c225 100uf16v fb33 fb36 c223 0.1uf c222 100uf16v gnd 1 out 2 vin 3 4 4 u15 lm1117-2.5v c226 0.1uf c220 0.1uf c207 100uf16v gnd 1 out 2 vin 3 4 4 u14 lm1084-3.3v c208 0.1uf c211 0.1uf c210 220uf16v c206 0.1uf vcc5_sw v3_3m on_panel c231 0.1uf c232 100uf16v vlcd 12v to inverter vcc5 12v on_backlite r196 3.3k r204 2.2k c215 0.1uf c217 0.1uf r193 10k c216 0.1uf in 1 gnd 2 out 3 4 4 u18 mc7805cd2t 3 4 5 6 u12b irf7316 c214 0.1uf c218 100uf16v c213 470uf25v c212 0.1uf 12v vcc5a r200 10k pwron pwron r207 10k c230 0.1uf r206 3.3k samsung 15"17" : +3.3v lg 17" 20": +12v fb41 ecbc2012m800t fb40 ecbc2012m800t fb39 ecbc2012m800t vcc5 stuff one of fb39,fb40,fb41 for different panel ! c191 470uf16v c188 1000uf16v q20 2n3904 q22 2n3904 q21 2n3904 q24 2n3904 r242 0 s 1 s 2 s 3 g 4 d 5 d 6 d 7 d 8 u19 ntms10p02r vlcd au 20": +5v 1 3 2 d13 bav99 1 3 2 d14 bav99 1 3 2 d15 bav99 en_dpf_dvd r28 10k r166 3.3k vcc5 vin 1 feedback 4 on/off 5 output 2 gnd 3 u23 lm2596-5.0 c243 0.1uf d17 1n5824 l6 68uh c134 0.1uf c292 470uf25v 12v c294 1000uf16v 1 2 3 4 5 6 7 8 j19 con8 pw_dpf_dvd sda_dpf scl_dpf 1 2 3 jp2 dap 12v power supply to dpf or dvd v2_5m v3_3m 1 2 3 4 5 6 j18 con6 q25 2n3904 q4 2n3904 r19 ry21-2w-6.8 - 45 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
1 2 3 4 a b c d 4 3 2 1 d c b a title 0 4 1 2 0 8 . d d b in1 1 out1 2 out2 3 in2 4 con2 5 con3 6 gnd 7 in3 8 out3 9 out4 10 in4 11 con4 12 con1 13 vcc 14 u24 mc14016bdr2 vcc5 c65 0.1uf r17 10k r18 4.7k update con= +5v, vga connect with uoc update con= 0v, vga connect with ddc vcc5 update_con vga_scl vga_sda ddc_sda ddc_scl scl_uoc sda_uoc ls07-eu-vga port update program q6 2n3904 - 46 - model no.: LCT-20CHST version: 1.0 www.datasheet.net/ datasheet pdf - http://www..co.kr/
-47 - model no.: LCT-20CHST version: 1.0 wiring diagram www.datasheet.net/ datasheet pdf - http://www..co.kr/
put on pyrocondensation wiring horness yellow/ green umber blue the wiring connection diagram of power supply socket 1. connect each wiring horness and plug with cord according to final wiring connection diagram. 2. the assembly position of each wiring horness and plug with card are confirmed by technologist and fix then at proper location. 3. the paste location of certificate and breakable label is confirmed by technologist make sure the consistency of location. 4. suspending panel is covered by protective film. 5. paste insulative board onto transition assembly, then install built-in power supply module. 6. check if each bottom could mark, if so, protect the four corners of the front frame with blue adhesive tape. the method is confirmed by technologist. make sure the side with mark "o" should be forward the display panel then installing the power supply switch. -48 - model no.: LCT-20CHST version: 1.0 exploded view www.datasheet.net/ datasheet pdf - http://www..co.kr/
- 49 - model no.: LCT-20CHST version: 1.0 part list no part name 1 chassis assembly 2 front frame assembly 3 front frame assembly 4 back cover assembly 5 base assembly 10 tapping screw 3x10 11 tapping screw 3x8 12 tapping screw 3x6 13 screw assembly m3x8 14 screw assembly m4x6 15 clip (rj050) www.datasheet.net/ datasheet pdf - http://www..co.kr/
www.datasheet.net/ datasheet pdf - http://www..co.kr/

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