TCL L19E75A, Service Manual

Page 1: ...1 Main Board 29 7 2 Power Board 31 7 3 IR Board 34 7 4 Key Board 35 8 Block Diagram 36 9 Schematic Diagram 37 9 1 Main Board 37 9 2 Power Board 45 10 Exploded View 47 11 BOM List 49 Table Of Contents...

Page 2: ...ristics might create shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from TCL TCL assumes no liability express or implie...

Page 3: ...19 LCD TV TCL L19E75A 3 Revision List Version Release Date Revision Instructions TPV Model A00 April 15 2007 Initial Release E197M1NCBWTLN...

Page 4: ...60Hz is the recommended mode When message The input frequency exceeds the maximum appears please return to above mentioned supported modes ASAP Audio input Stereo headphone jack 3 5 TV Function TV St...

Page 5: ...ttoms VOL Press V or V to adjust the volume PR Press P or P to browse through the TV channels which are not erased OK Press the button to confirm selection MENU Press repeatedly to display OSD menu MU...

Page 6: ...u status these 2 buttons can be used to confirm selected options Channel To switch channels Under Menu status these 2 buttons can be used to access selected options Menu Enters or exits the OSD Menu S...

Page 7: ...ion Source Menu Press the SOURCE button to enter the Source Menu PC HDMI TV AV S Video YPBPR Press the menu to enter into the OSD menu Adjustable items for TV mode includes Picture Sound Function Syst...

Page 8: ...om 2 Select between Standard and Center under HDMI mode PC NO function 7 Picture mode 4 options Personal Soft Bright and Dynamic to select the overall effect of the screen PC NO function 8 Memory reca...

Page 9: ...Clock or Phase Adjustable range is from 0 100 Adjust only when the entire screen shakes or glitches appear Do not adjust when everything is normal 3 Auto size Adjust the above values automatically Adv...

Page 10: ...e duration of the Menu on the screen 5 OSD Halftone Adjustable range from 0 100 To adjust the menu transparency The screen will not be seen through the menu when the set to 0 6 Information To display...

Page 11: ...e user to scan the channels and save programs manually 5 Set frequency Display the frequency of the current channel The frequency can be input manually Range is from 47 0MHZ to 903MHZ 6 Fine tuning Us...

Page 12: ...r input 2 HDMI input 3 VGA signal input Input signal for PC video with a VGA signal cable 4 PC audio input Input for PC audio signal 5 Headset output 6 Component audio signal input right channel 7 8 9...

Page 13: ...image Note When there is no TV signal input the unit will automatically switch to standby mode after 10 minutes Power Connection Plug one end of the power cord to the POWER jack in the rear of the TV...

Page 14: ...signal cable to your signal system device and lock both screws on the connector to ensure firm grounding The connector information is as follow 1 6 11 15 5 10 15 Pin Color Display Signal Cable Pin No...

Page 15: ...ity Presence Screen Mode Horizontal Vertical Horizontal Vertical FULL Hz KHz 15 9 720 400 70 1 31 5 NEG POS YES YES YES 640 480 59 9 31 5 NEG NEG YES YES YES 72 8 37 9 NEG NEG YES YES YES 75 0 37 5 NE...

Page 16: ...ure Description Preparation Lay the LCD TV on a flat soft and clean surface Remove the base and stand Remove the hinge cover and the screws on the stand to remove the stand and base Remove the back co...

Page 17: ...19 LCD TV TCL L19E75A 17 Remove The hinge plate Remove the six screws to remove the hinge plate Remove the shield 1 Remove the eleven screws...

Page 18: ...in Board and Power Board 1 Remove the five screws marked in red to remove the power board 2 Remove the nine screws marked in red to remove the main board 3 Disconnect the connector marked in blue and...

Page 19: ...19 LCD TV TCL L19E75A 19 Remove The Main Frame Remove the four screws to remove the main frame...

Page 20: ...19 LCD TV TCL L19E75A 20 Panel...

Page 21: ...nterface OK Check F901 BD901 D901 D902 NG Replace F901 or BD901 or D902 OK Check IC901 Q903 Check T901 NG Replace IC901 or Q903 Check D902 ZD905 NG Replace D902 ZD905 OK OK Check D908 12V D909 5V OK N...

Page 22: ...19 LCD TV TCL L19E75A 22 5 2 Can not start LED indicator yellow NG Repair the key board OK Check U701 U702 NG Replace U701 U702 OK Check U400 Replace U400 NG Check I2C communication Check key board...

Page 23: ...Check LVDS cable NG Reset LVDS cable OK Check 12V and 5V power supply NG Return to 5 1 OK Check main board power supply OK Check IC801 NG Replace IC801 OK Check I2C communication OK Check panel NG Re...

Page 24: ...Check the source Reset source NG Check signal filter circuit Replace the filter or resistance RF signal Check Tuner Replace Tuner Check LVDS cable Check input Replace LVDS cable Check panel Replace pa...

Page 25: ...e filter circuit SIF signal Check TV system setup Check Tuner Replace Tuner AV S video HDMI PC signal Replace U400 Check Earphone jack Replace the Earphone jack Check U600 Replace U600 NG NG OK NG OK...

Page 26: ...ey Board OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch OK Is Key Pad Board Normally Replace Key Pad Board Ch...

Page 27: ...DE button to check the color temp is in SPEC or not 9 Enter the 8 item to select another color temperature to adjust B Adjust 9300K color temperature 1 Switch the chroma 7120 to RGB mode with press MO...

Page 28: ...lect another color temperature to adjust B Adjust 9300K color temperature 1 Switch the chroma 7120 to RGB mode with press MODE button 2 Switch the MEM channel to Channel 03 with up or down arrow on ch...

Page 29: ...19 LCD TV TCL L19E75A 29 7 PCB Layout 7 1 Main Board 715T2509 1...

Page 30: ...19 LCD TV TCL L19E75A 30...

Page 31: ...19 LCD TV TCL L19E75A 31 7 2 Power Board 715T2476 1...

Page 32: ...19 LCD TV TCL L19E75A 32...

Page 33: ...19 LCD TV TCL L19E75A 33...

Page 34: ...19 LCD TV TCL L19E75A 34 7 3 IR Board 715T2499 1...

Page 35: ...19 LCD TV TCL L19E75A 35 7 4 Key Board 715T2501 1...

Page 36: ...19 LCD TV TCL L19E75A 36 8 Block Diagram...

Page 37: ...704 0 1uF 5Vstb PANEL ON OFF C708 2 2uF C702 0 1uF R700 1K 1 10W Q701 PMBS3904 1 3 2 R710 4 7K 1 10W 3 3V C762 470uF 16V POWER ON OFF C703 0 1uF Q713 PMBS3904 1 3 2 R709 4 7K 1 10W POWER ON OFF C724 0...

Page 38: ...DD_HDMI 12V_PWR C716 47UF 16V 3 3VA C751 0 1uF C701 47UF 16V Vcc3 3 for MST9E19A FB708 300 OHM 1 2 C718 2 2uF L701 4 7uH AVDD_SIF C725 0 1uF C752 0 1uF D701 NC B340A 1 2 C748 2 2uF C740 0 1uF Vcc3 3 f...

Page 39: ...153 154 116 117 118 135 124 123 122 121 97 96 95 94 93 92 91 90 139 138 137 191 190 189 188 185 184 183 182 181 180 179 178 177 176 175 174 171 170 169 168 167 166 165 164 163 162 161 160 202 201 200...

Page 40: ...Document Number Rev Date Sheet of C171 NC P101 PHONEJACK 1 2 3 4 5 SOG BIN 5Vstb RIN C165 0 047uF C167 1000pF R190 NC VGA HS ZD116 UDZS5 6B 1 2 C170 0 047uF VS_RGB 715T2509 1 RIN R180 47 1 10W 5Vstb Z...

Page 41: ...NC 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SDA SCL WP VCC R512 NC R509 NC HDMI DDC SDA HDMI_SCL R514 NC 715T2509 1 C502 NC C508 NC HDMI 5V HDMI RX1 R515 NC 01 05 HDMI A4 5 8 Tuesday March 20 2007 Title Size Doc...

Page 42: ...PR R141 12K 1 10W R143 10 1 10W SVIDEO Yin R151 470 1 10W ZD102 VPORT0603100KV05 1 2 R164 12K 1 10W AV Vin R161 47 1 10W C149 680pF R149 47 1 10W R166 12K 1 10W AV SVIDEO Lin C151 0 047uF CN102 DIN JA...

Page 43: ...R IF A4 7 8 Tuesday March 20 2007 Title Size Document Number Rev Date Sheet of R133 100 1 10W TV1 Vin SCL_EXT FB102 300 OHM 1 2 C117 22pF R122 10 1 10W TV_SIF Video Module Tuner Demodulator Option 5VA...

Page 44: ...Rout C612 47UF 16V R601 10K 1 10W AGND AGND R604 1K 1 10W U600 TDA7266D 7 14 9 13 1 10 11 20 2 5 19 16 6 15 8 IN1 IN2 ST_BY S_GND PW_GND PW_GND PW_GND PW_GND OUT1 OUT1 OUT2 OUT2 VCC VCC MUTE Q600 PMB...

Page 45: ...1 1 2 SWITCH DIM R937 100 1 4W D909 SB1060FCT 1 2 3 D908 SP10150R 1 2 3 R911 1K 1 4W ON OFF R934 100 1 4W R916 100 1 4W TO PIN3 R902 680K 1 4W R906 100 1 4W C931 0 001uF C906 22uF C902 0 001uF 250V DI...

Page 46: ...ONN 1 2 Q806 AM9945N T1 PF 1 2 3 4 8 7 6 5 S G S G D D D D R823 82K 1 8W R810 1M 1 8W C812 0 001uF D805 BAV99 3 1 2 Q805 AM9945N T1 PF 1 2 3 4 8 7 6 5 S G S G D D D D R841 430 1 1 8W R819 15 1 4W C848...

Page 47: ...19 LCD TV TCL L19E75A 47 10 Exploded View...

Page 48: ...19 LCD TV TCL L19E75A 48...

Page 49: ...ONY A1KALINE LR03 095T8014 2D535 WIRE HARNESS 095T8014 3D558 WIRE HARNESS 095T8014 7D512 WIRE HARNESS 095T8018 3X638 LVDS CABLE 098TRACG3NETLA REMOTE SENEASY FOR TCL 0M1T 330 4120 SCREW 0M1T 330 4120...

Page 50: ...Q44T9061 1 EPS Q44T9061 2 EPS Q44T9061654 1A CARTON Q45T 76 28 RN R PE BAG Q45T 76 28NV2 R PE BAG FOR CLAMP Q45T 88609 22 R EPE COVER Q45T 99609 10 R EPE COVER Q52T6025 15193 MYLAR Q85T 583142 FOAM_EL...

Page 51: ...5T 3J1206ET 12PF 5 SL 3KV TDK C826 065T 3J5096ET 5PF 5 SL 3KV C825 065T 3J5096ET 5PF 5 SL 3KV C915 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C902 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C901 065T306...

Page 52: ...01 067T 305470 3T EC 105 47UF M 16V C713 067T 305470 3T EC 105 47UF M 16V C716 067T 305470 3T EC 105 47UF M 16V C135 067T 305470 3T EC 105 47UF M 16V C400 067T 305470 3T EC 105 47UF M 16V Q1 057T 417...

Page 53: ...HIPR 1KOHM 5 1 4W R922 061T0805102 RST CHIPR 1KOHM 5 1 4W R921 061T0805102 RST CHIPR 1KOHM 5 1 4W R803 061T0805103 RST CHIPR 10 KOHM 5 1 8W R806 061T0805103 RST CHIPR 10 KOHM 5 1 8W R812 061T0805103 R...

Page 54: ...72 RST CHIPR 4 7 KOHM 5 1 4W R938 061T1206472 RST CHIPR 4 7 KOHM 5 1 4W R837 061T1206519 RST CHIPR 5 1 OHM 5 1 4W R842 061T1206519 RST CHIPR 5 1 OHM 5 1 4W R901 061T1206684 RST CHIPR 680KOHM 5 1 4W R9...

Page 55: ...T 39S 44 T RLZ18B U601 056T 192900 IC TL062CD SO 8 U600 056T 535 3 TDA7266D U400 056T 562537 IC A9001 MSTAR U702 056T 563 7 AIC1084 33PM TO 263 AIC U701 056T 563510 IC MP2106DK MSOP 10 MPS U500 056T11...

Page 56: ...1 16W R172 061T0603100 CHIP 10OHM 1 16W R171 061T0603100 CHIP 10OHM 1 16W R147 061T0603100 CHIP 10OHM 1 16W R145 061T0603100 CHIP 10OHM 1 16W R143 061T0603100 CHIP 10OHM 1 16W R126 061T0603100 CHIP 10...

Page 57: ...746 061T0603103 CHIP 10KOHM 1 16W R752 061T0603103 CHIP 10KOHM 1 16W R755 061T0603103 CHIP 10KOHM 1 16W R756 061T0603103 CHIP 10KOHM 1 16W R194 061T0603103 CHIP 10KOHM 1 16W R701 061T0603103 CHIP 10KO...

Page 58: ...03472 CHIP 4 7KOHM 1 16W R186 061T0603472 CHIP 4 7KOHM 1 16W R187 061T0603472 CHIP 4 7KOHM 1 16W R417 061T0603472 CHIP 4 7KOHM 1 16W R420 061T0603472 CHIP 4 7KOHM 1 16W R456 061T0603472 CHIP 4 7KOHM 1...

Page 59: ...C501 065T0402104 12 MLCC 0402 0 1UF K 16V X7R C439 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C436 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C435 065T040210427T CAP 0402 0 1UF Z 25...

Page 60: ...YO YUDEN C724 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C757 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C609 065T0402105 17 CHIP 1UF 16V C118 065T0402220 31 CHIP 22PF 50V NPO C117 0...

Page 61: ...IP 2 2UF 16V Y5V C500 065T0805225 17 CHIP 2 2UF 16V Y5V C765 065T0805225 17 CHIP 2 2UF 16V Y5V U403 070THDCP500MST MSTAR HDCP FB102 071T 57G301 EA CHIP BEAD FB103 071T 57G301 EA CHIP BEAD FB600 071T 5...

Page 62: ...6T 31502 1 5MM RIVET Q903 006T 31502 1 5MM RIVET PT802 006T 31502 1 5MM RIVET PT801 006T 31502 1 5MM RIVET L902 006T 31502 1 5MM RIVET C905 006T 31502 1 5MM RIVET IC903 056T 158 12 KIA431A AT P R822 0...

Page 63: ...19 LCD TV TCL L19E75A 63 J810 095T 90 23 JUMP WIRE J809 095T 90 23 JUMP WIRE J808 095T 90 23 JUMP WIRE 715T2476 1 POWER BOARD PCB...