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Samsung 42LW5700 Service Manual

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LED LCD TV
SERVICE MANUAL
CHASSIS : LJ12C
MODEL : 42LW5700
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL66981611 (1103-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42LW5700-SA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for Samsung 42LW5700

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LJ12C MODEL : 42LW5700 42LW5700-SA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL66981611 (1103-REV00) Printed in Korea...
  • Page 2 CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION .............. 12 EXPLODED VIEW .................. 20 SVC. SHEET ....................Copyright LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
  • Page 3 SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.
  • Page 4 SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.
  • Page 6 1) AC 100 - 240V~ 50/60Hz Market Central and South AMERICA Screen Size 32 inch Wide(1920x1080) 32LV5500, 32LW5700 37 inch Wide(1920x1080) 42 inch Wide(1920x1080) 42LV5500, 42LW5700 47 inch Wide(1920x1080) 47LV5500, 47LW5700 , 47LW9500 55 inch Wide(1920x1080) 55LV5500, 55LW9500 72 inch Wide(1920x1080) 72LZ9700 Aspect Ratio...
  • Page 7 Color coordinate Typ. 0.648 Typ. 32LW5700-SA -0.03 0.334 +0.03 GREEN 0.307 0.606 BLUE 0.152 0.058 WHITE 0.279 0.292 Typ. 0.650 Typ. 42LW5700-SA -0.03 0.333 +0.03 GREEN 0.307 0.604 BLUE 0.150 0.059 WHITE 0.279 0.292 Typ. 0.648 Typ. 47LW5700-SA -0.03 0.332 +0.03 GREEN 0.306...
  • Page 8 6. Component Video Input (Y, C Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 720*480 15.73 13.5135 SDTV ,DVD 480I 720*480 15.73 59.94 13.5 SDTV ,DVD 480I 720*480 31.50 27.027 SDTV 480P 720*480 31.47 59.94 27.0 SDTV 480P 720*576 15.625 13.5 SDTV 576I 720*576 31.25 13.5...
  • Page 9 8. HDMI input (PC/DTV) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 640*350 31.468 70.09 25.17 720*400 31.469 70.08 28.32 640*480 31.469 59.94 25.17 VESA(VGA) 800*600 37.879 60.31 40.00 VESA(SVGA) 1024*768 48.363 60.00 65.00 VESA(XGA) 1280*768 47.776 59.870 79.5 CVT(WXGA) 1360*768 47.712 60.015 85.50 VESA (WXGA)
  • Page 10 * Only 3DTV 9. HDMI Input(1.4a) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 3D input proposed mode 1920*1080 53.95 / 54 23.98 / 24 148.35/148.5 HDTV 1080P Frame packing 1280*720 89.9 / 90 59.94/60 148.35/148.5 HDTV 720P Frame packing 1280*720 148.5 HDTV 720P Frame packing 1920*1080...
  • Page 11 11. Wireless Input(1.3) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 3D input proposed mode 1280*720 45.00 60.00 74.25 HDTV 720P Side by Side, Top & Bottom 1280*720 37.500 74.25 HDTV 720P Side by Side, Top & Bottom 1920*1080 33.75 60.00 74.25 HDTV 1080I Side by Side, Top &...
  • Page 12 ADJUSTMENT INSTRUCTION 1. Application Range 4. PCB Assembly Adjustment This specification sheet is applied all of the LJ12C/D/E/F/N 4.1. MAC Address LCD TV models, which produced in manufacture department 4.1.1. Equipment & Condition or similar LG TV factory • Play file: Serial.exe •...
  • Page 13 4.1.4 LAN inspection solution 4.2. Using RS-232C • LAN Port connection with PCB Adjust 3 items at 3.1 PCB assembly adjustments “adjustment • Network setting at MENU Mode of TV sequence” one after the order. • Setting automatic IP Adjustment protocol •...
  • Page 14 5 Factory Adjustment 5.2 EDID (The Extended Display Identification Data) / DDC (Display Data 5.1 Manual Adjust Component 480i/1080p Channel) Download. RGB 1080p Summary Summary : Adjustment component 480i/1080i and RGB • It is established in VESA, for communication between PC 1080p is Gain and Black level setting at Analog to Digital and Monitor without order from user for building user converter, and compensate the RGB deviation...
  • Page 15 5.2.1 Manual Download Write HDMI EDID data • Using instruments - Jig. (PC Serial to D-Sub connection) for PC, DDC adjustment. - S/W for DDC recording (EDID data write and read) - D-sub jack - Additional HDMI cable connection Jig. •...
  • Page 16 5.3 Adjustment Color Temperature (White White Balance Adjustment If you can’t adjust with inner pattern, then you can adjust it balance) using HDMI pattern. You can select option at “Ez-Adjust Menu – 7. White Balance” there items “NONE, INNER, Using Instruments HDMI”.
  • Page 17 • Using CA-210 Equipment. (9 CH) O Notice) Adjustment Mapping information - Contrast value: 216 Gray Color Coordination Color temperature Test Equipment COOL CA-210 0.269±0.002 0.273±0.002 CA-210 MEDIUM 0.285±0.002 0.293±0.002 CA-210 WARM 0.313±0.002 0.329±0.002 • Using CA-210 Equipment. (14 CH) - White Balance adjustment coordination and color •...
  • Page 18 5.4 EYE-Q function check 6. GND and ESD Testing 6.1 Prepare GND and ESD Testing. 1) Turn on TV Check the connection between set and power cord 2) Press EYE key of Adj. R/C 3) Cover the Eye Q II sensor on the front of the using your hand and wait for 6 seconds 6.2 Operate GND and ESD auto-test.
  • Page 19 8. Default Service option. 9. USB DOWNLOAD (*.epk file download) 9.1 Put the USB Stick to the USB socket 9.2 Press Menu key, and move OPTION 8.1 ADC-Set. R-Gain adjustment Value (default 128) 9.3 Press “FAV” Press 7 times. G-Gain adjustment Value (default 128) B-Gain adjustment Value (default 128) R-Offset adjustment Value (default 128) G-Offset adjustment Value (default 128)
  • Page 20 EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
  • Page 21 IC101 IC101 IC101 LG1121A LG1121A LG1121A +1.0VDC +3.3V_IO R106 R110 R112 R114 R117 R148 SPI FLASH(4Mbit) +3.3VD TXA0P_2D3D RXA0P TXA0P/RRV7P TXA0P VDD_1 VDD33_1 VSS_1 VSS_151 TXA0N_2D3D RXA0N TXA0N/RRV7N TXA0N VDD_2 VDD33_2 VSS_2 VSS_152 TXA1P_2D3D TXA1P XTAL RXA1P TXA1P/RRV6P VDD_3 VDD33_3 VSS_3 VSS_153 TXA1N_2D3D...
  • Page 22 IC101 LG1121A DDR0_A[0-13] DDR1_A[0-13] IC201 IC202 AJ33 AM17 DDR0_A[0] DDR1_A[0] DDR0_A[0-13] DDR0_A[0] DDR1_A[0] DDR1_A[0-13] H5TQ1G63DFR-PBC H5TQ1G63DFR-PBC +0.75V_VREF0_M0 DDR0_A[1] AN33 DDR1_A[1] +0.75V_VREF1_M0 DDR0_A[1] DDR1_A[1] AK34 AP16 DDR0_A[2] DDR1_A[2] DDR0_A[2] DDR1_A[2] DDR0_A[3] AG33 AP19 DDR1_A[3] +0.75V_VREF0_M1 +0.75V_VREF1_M1 DDR0_A[3] DDR1_A[3] AN32 DDR0_A[0] DDR0_A[4] DDR1_A[4] DDR1_A[0] VREFCA...
  • Page 23 +1.0V_Normal +1.5V_DDR0 VLCD_POWER MAX 782mA +3.3VD (+12V) VLCD_POWER (+12V) R306 L301 MAX 2.92A L304 CIS21J121 C308 0.1uF CIS21J121 +1.5V0 +2.5V +1.0V DCDC_Old DCDC_Revision IC303 IC303-*1 AOZ1072AI AOZ1072AI-3 L306 L303 3.6uH PGND LX_2 IC302 3.6uH PGND LX_2 C303 C300 COMP AOZ1024DI LX_1 R319 0.1uF...
  • Page 24 [PMIC Block] VLCD_POWER (+12V) VCC_LCM (+3.3V) R451 L402 1/10W Place Bottom 22uH R427 1/10W (+5V) 2.2A C410 C414 C418 C420 D403 C441 C432 C435 C438 10uF 10uF 10uF 10uF SMAB34 R430 22uF 22uF 0.1uF 5.1K R408 150K C427 TCOMP 0.1uF VCORE VLCD_POWER (+1.0V)
  • Page 25 [FRC-II 51P LVDS input wafer] [FRC-II 80P mini-LVDS output wafer] [To LED Driver] VDD_LCM (+16V) P503 12507WR-08L C502 C503 C504 C505 C506 C508 C510 0.1uF 10uF 10uF 10uF 10uF 10uF 10uF P501 P502 P500 VLCD_POWER 104060-8017 104060-8017 FI-RE51S-HFK-A (+12V) L/DIM0_SCLK L500 VCC_LCM CIS21J121...
  • Page 26 LG5811 will be change LG5811A. IC601 IC601 Please use LG5811 unitil revision. LGE5811A LGE5811A +3.3VDD +3.3VDD Decaps TXA0P LLV0P RXA0P LLV0P VDD_33_1 GND_1 VCC_LCM TXA0N RXA0N LLV0N LLV0N VDD_33_2 GND_2 (+3.3V) +3.3VDD +3.3VDD +3.3VDD TXA1P LLV1P RXA1P LLV1P VDD_33_3 GND_3 TXA1N RXA1N LLV1N...
  • Page 27 +3.3V_LG1131_LVDS_Rx +3.3VD +3.3V_LG1131_Rx +3.3VD L702 CIS21J121 +3.3V_LG1131_VDD +3.3V_LG1131_TX R715 C729 C726 C731 C703 C705 C701 0.1uF 10uF 0.1uF 0.1uF 0.1uF R714 RESET RESET_LG1131 t_dout(4) : rst_pix2_n +3.3V_LG1131_Rx +1.0V_LG1131 R716 SW700 JTP-1127WEM RESET_LG1131 R700 R702 R704 R706 R708 R710 VDD10_1 GND_13 RXB4P TXB4P RXB4P...
  • Page 28 Strap Setting NAND FLASH MEMORY 8Gbit 16Gbit Boot ROM Device Select - (FA4,FAD7,FAD2,FAD1) +3.3V_Normal +3.3V_Normal +3.3V_Normal 0000: ST Micro M25P or compatible Serial Flash IC102-*1 0010: 8-bit 512Mbit 512B page SLC NAND Flash devices TH58DVG4S0ETA20 IC102 0100: 8-bit 128, 256Mbit 512B page SLC NAND Flash devices TC58DVG3S0ETA00 0110: 8-bit 1Gbit 2KB page SLC NAND Flash devices R113...
  • Page 29 POWER 2.5V CORE 0.9V +2.5V_BCM35230 ADAC_AVDD25 +2.5V_BCM35230 AADC_AVDD25 +0.9V_CORE USB_AVDD +0.9V_CORE VAFE2_DVDD +0.9V_CORE HDMI_AVDD L202 L205 L209 L214 BLM18PG121SN1D BLM18PG121SN1D L219 +3.3V_Normal BLM18PG121SN1D BLM18PG121SN1D BLM18PG121SN1D +0.9V_CORE +0.9V_CORE NFM18PS105R0J NFM18PS105R0J C249 C253 C256 C258 C292 C296 C299 C233 C204 10uF 10uF 0.1uF 0.1uF C280...
  • Page 30 IC101 LGE35230(BCM35230KFSBG) C320 0.1uF DSUB_R+ C321 0.1uF INCM_R C327 0.1uF R311 DSUB_G+ NON_BCM_CAP C328 0.1uF INCM_G VI_R R317 VI_INCM_R VI_G BCM35230_with_CAP_220pF VI_INCM_G C322 0.1uF DSUB_B+ VI_B C323 0.1uF INCM_B VI_INCM_B IC101-*1 R312 LGE35230 DSUB_HSYNC HSYNC_IN DSUB_VSYNC VSYNC_IN VIDEO INCM C329 0.1uF BCM_CAP COMP1_Y...
  • Page 31 DUAL COMPONENT IC401,IC402 1ST : EAN61667501, 2ND : EAN61570701 IC401-*1 1ST : T-K4B2G1646B_HCK0, 2ND : T-H5TQ2G63BFR-PBC IC402-*1 DDR STRAP DDR_DQ[0] DDR_DQ[1] DDR_DQ[2] DDR_DQ[3] DDR_DQ[4] +1.5V_DDR +1.5V_DDR NFM18PS105R0J NFM18PS105R0J C410 C432 JEDEC Types : DDR_DQ[0:4] 6.3V 6.3V R401 R403 R405 R407 R409 4.7K 4.7K...
  • Page 32 DUAL COMPONENT +12V PANEL_POWER FROM LIPS & POWER B/D Q501,Q504, 1ST : 0TRIY80001A 2ND : 0TR387500AA L511 TYP 1450mA Q505,Q506 12V_PANEL +3.5V_ST RT1P141C-T112 MLB-201209-0120P-N2 1ST : 0TRIH80004A, 2ND : EBK61012501, 3RD : 0TR102009AM Q502 Q502 PANEL_VCC C551 Q507 C550 1ST : EBK60752501, 2ND : EBK61011501 0.1uF R508 0.01uF...
  • Page 33 NEC MICOM +3.5V_ST R641 C602 C603 MICOM_DOWNLOAD 13pF 13pF X601 For Debug 10MHz P601 +3.5V_ST 12505WS-12A00 X602 MICOM_RESET 32.768KHz NEC_ISP_Tx R642 +3.5V_ST 10Mhz Crystal 4.7M NEC_ISP_Rx OCD1A OCD1B +3.5V_ST JTP-1127WEM FLMD0 C608 0.1uF R606 C604 0.1uF R647 R607 +3.5V_ST NEC_ISP_Rx 1/16W R610 NEC_ISP_Tx...
  • Page 34 DUAL COMPONENT D707,D708 1ST : 0DD184009AA 2ND : 0DSIH00028A D710,D711 BODY_SHIELD 1ST : T-BAT54_SUZHO, 2ND : 0DSON00138A D713 5V_HDMI_4 5V_HDMI_1 BODY_SHIELD HDMI_HPD_4 HDMI_HPD_1 VR708 R729 VR706 R728 HP_DET HP_DET R727 R737 C717 C714 0.1uF 0.1uF VR707 R735 R730 VR703 * HDMI CEC 3.6K 3.6K DDC_DATA...
  • Page 35 RGB/ PC AUDIO/ SPDIF/ EARPHONE/ RS232C DUAL COMPONENT EARPHON JACK +5V_Normal RGB PC D804,D805,D806 D810 KDS184 D807,D808,D813 1ST : EAH39491601, 2ND : EAH33945901 D814 D810 1ST : 0DD184009AA, 2ND : 0DSIH00028A JK803 +3.3V_Normal KJA-PH-0-0177 Q801 1ST : 0TRIY80001A, 2ND : 0TR387500AA +5V_Normal IC801 74F08D...
  • Page 36 DUAL COMPONENT Q901,Q902,Q903 1ST : 0TRIY80001A 2ND : 0TR387500AA Q904,Q905,Q906 D903,D904 1ST : EAH42720601, 2ND : EAH60994401 D905,D906 +3.5V_ST IR & KEY IR_12P IR_15P R933 EEPROM_SCL P902 P901 R920 12507WR-12L 12507WR-15L R919 D905 CDS3C05HDMI1 5.6V EEPROM_SCL R915 +3.5V_ST KEY1 R934 EEPROM_SDA EEPROM_SDA R916...
  • Page 37 WIRELESS READY MODEL DUAL COMPONENT D1001,D1002 1ST : EAH42720601 2ND : EAH60994401 Q1001 1ST : EBK61012601, 2ND : 0TRDI80002A Q1002 1ST : EBK60752501, 2ND : EBK61011501 JK1001 KJA-PH-3-0168 Wireless power WIRELESS VCC(24V/20V/17V)_1 VCC(24V/20V/17V)_2 VCC(24V/20V/17V)_3 VCC(24V/20V/17V)_4 VCC(24V/20V/17V)_1 +24V VCC(24V/20V/17V)_1 DETECT +3.3V_Normal INTERRUPT R1002 C1002...
  • Page 38 CVBS 1 PHONE JACK CVBS2 REAR JACK +3.3V_Normal R1141 R1112 AV2_R_IN 2.7K R1113 D1109 C1118 R1116 AMOTECH C1123 5.6V 470K 560pF AV1_CVBS_DET 560pF D1105 R1142 5.6V AV2_L_IN JK1102 D1110 KJA-PH-1-0177 C1119 AMOTECH R1117 C1124 5.6V M5_GND 470K 560pF 560pF JK1104 R1136 PPJ233-01 AV1_CVBS_IN...
  • Page 39 USB_WIFI DUAL COMPONENT D1201,D1202 +5V_USB D1203,D1204 1ST : EAH42720601 2ND : EAH60994401 D1205,D1206 L1202 WIFI 120-ohm MLB-201209-0120P-N2 C1233 C1234 WIFI 0.1uF WIFI 0.1uF For EMI P1201 12507WR-04L WIFI C1232 100uF WIFI Close to BCM IC R1232 WIFI_DM WIFI R1233 WIFI_DP WIFI D1202 D1201...
  • Page 40 TI solution M_REMOTE OPTION +3.3V_Normal +3.3V_Normal P1302 12507WR-12L L1303 M_REMOTE 120-ohm M_REMOTE 3.3V R1321 R1322 R1323 M_REMOTE R1315 2.7K 2.7K 2.7K M_REMOTE M_REMOTE M_REMOTE M_REMOTE_RX M_REMOTE R1316 M_REMOTE_TX M_REMOTE R1317 RESET M_RFModule_RESET M_REMOTE R1318 DC_MREMOTE M_REMOTE R1319 DD_MREMOTE M_REMOTE R1320 GPIO_0 3D_GPIO_0 M_REMOTE...
  • Page 41 Ethernet Block DUAL COMPONENT D1401,D1402 D1403,D1404 1ST : EAH42720601 2ND : EAH60994401 D1405,D1406 +2.5V_BCM35230 L1401 MLB-201209-0120P-N2 JK1401 XRJH-01A-4-DA7-180-LG(B) C1401 0.1uF EPHY_TDP EPHY_TDN EPHY_RDP EPHY_RDN D1401 D1402 D1404 D1406 5.5V 5.5V 5.5V 5.5V LAN_ESD LAN_ESD LAN_ESD LAN_ESD R10[GND] +3.3V_Normal YL_C EPHY_ACTIVITY R1401 YL_A GN_C...
  • Page 42 FHD120Hz LVDS output(51pin+41Pin) P1501 P1502 FI-RE51S-HFK-A FI-RE41S-HFK-A LVDS_41P REVERSE MARK LVDS_41P FRC2 LVDS_SEL R1504 3D_SYNC_RF C1504 2.2uF +3.3V_Normal FRC2 R1506 SDA2_3.3V FRC2 R1507 SCL2_3.3V R1513 FRC2 R1508 FRC_RESET 3.3K LVDS_SEL_HIGH R1514 LVDS_SEL_LOW SHARP_60INCH R1516 PANEL_CTL TXC0N TXC0P TXA0N TXC1N TXA0P TXC1P TXA1N TXC2N...
  • Page 43 [Local Dimming Block] P1601 12507WR-08L L/DIM0_SCLK L/DIM0_MOSI R1601 SCL2_3.3V LPB_42/47/55 R1602 SDA2_3.3V LPB_42/47/55 L/DIM0_VS SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. BCM35230 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR L_DIMMING THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
  • Page 44 +3.3V_Normal AMP_RESET_N DUAL COMPONENT C1834 1000pF Q1801 1ST : 0TRIY80001A 2ND : 0TR387500AA L1803 +24V_AMP BLM18PG121SN1D R1851 AUD_MASTER_CLK +24V_AMP +24V C1881 C1842 C1846 C1848 0.01uF 0.1uF 0.1uF 10uF C1832 C1883 10uF 0.1uF L1801 SPK_L+ MLB-201209-0120P-N2 D1805 1N4148W R1823 R1834 L1810 100V R1839 10.0uH...
  • Page 45 DUAL COMPONENT Q1901 1ST : 0TRIY80001A 2ND : 0TR387500AA Q1902 1ST : EBK60752501, 2ND : EBK61011501 IC1904 1ST : 0ISTLPH062A, 2ND : EAN40055001 PCM_MDI[0-7] CI_MDI[0-7] Close to BCM35230 PCM_MDI[0] R1909 22 OPT CI_MDI[0] CI_MDI[1] R1910 PCM_MDI[1] 22 OPT BCM INT Demod AR1903 22 OPT PCM_MDI[2]...
  • Page 46 H/NIM & F/NIM & T/C/S2 Combo Tuner DUAL COMPONENT OPTION TABLE IC2204 1ST:T-AP2114H(EAN61573601) / 2ND:T-TJ3940S (EAN61573501) H/NIM H/NIM H/NIM F/NIM_CN F/NIM_Brazil DVB-T/C/S2 F/NIM_T/C F/NIM_T2 (Brazil,Taiwan) (AU,Latin) (China) (Brazil) (Eu,Aisa) (EU) NON_DVB_S: use H/NIM and F/NIM DVB_S: use DVB-T/C/S2 combo Tuner Non_DVB_S Non_DVB_S Non_DVB_S...
  • Page 47 DVB-S2 LNB Part Allegro (Option:LNB) D2301 D2304 SMAB34 SMAB34 +12V_LNB C2307 C2302 C2324 C2305 0.01uF 68uF 68uF L2301 33UH C2312 SP-7850_33 DCDC_GND and A_GND are connected close to Boost pin(#1) C2311 0.1uF 2.4A 10uF DCDC_GND and A_GND are connected in pin#27 close to VIN pin(#25) DCDC_GND PCB_GND and A_GND are connected...
  • Page 48 DUAL COMPONENT Q2502,Q2503 Q2504,Q2506 1ST : 0TRIY80001A 2ND : 0TR387500AA Q2507,Q2508 Q2501 1ST : EBK61012701, 2ND : EBK58172301 1ST : 0TRIH80004A, 2ND : EBK61012501, 3RD : 0TR102009AM Q2505 D2513 1ST : T-BAT54_SUZHO, 2ND : 0DSON00138A Full Scart(18 Pin Gender) +5V_Normal +3.3V_Normal IN CASE OF SMALL= 15V +12V...
  • Page 49 NON CHB TS Output CHBO_TS_SERIAL CHBO_TS_CLK CHBO_TS_VAL_ERR CHBO_TS_SYNC CHB_RESET SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS BCM35230 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON CHB THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
  • Page 50 DUAL COMPONENT China Hotel Option Q2901 1ST : EBK61012601 2ND : 0TRDI80002A +24V_AMP P2901 12505WS-09A00 CN_HOTEL R2904 0 CN_HOTEL C2901 0.1uF CN_HOTEL AUDIO_R +3.3V_Normal CN_HOTEL R2903 0 AMP_RESET_N R2902 CN_HOTEL AMP_MUTE_HOTEL Q2901 R2901 200 MMBT3904(NXP) AMP_MUTE_HOTEL CN_HOTEL CN_HOTEL SPK_R+_HOTEL SPK_R-_HOTEL SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 51 3D_SYNC L_VS SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. BCM35230 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON URSA THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
  • Page 52 M1-*3 M1-*2 M1-*1 MDS62110206 MDS62110208 MDS62110210 MDS62110204 GASKET_6.5T GASKET_5.0T GASKET_4.5T GASKET_5.5T M2-*2 M2-*1 M2-*3 MDS62110208 MDS62110206 MDS62110210 MDS62110204 GASKET_4.5T GASKET_6.5T GASKET_5.0T GASKET_5.5T M3-*3 M3-*1 M3-*2 MDS62110206 MDS62110208 MDS62110210 MDS62110204 GASKET_6.5T GASKET_4.5T GASKET_5.0T GASKET_5.5T M4-*2 M4-*1 M4-*3 MDS62110208 MDS62110206 MDS62110210 MDS62110204 GASKET_4.5T GASKET_6.5T GASKET_5.0T...
  • Page 53 M13-*2 M13-*1 MDS62110204 MDS62110208 MDS62110210 GASKET_5.5T GASKET_5.0T GASKET_4.5T M14-*2 M14-*1 MDS62110204 MDS62110208 MDS62110210 GASKET_5.5T GASKET_4.5T GASKET_5.0T M15-*2 M15-*1 MDS62110204 MDS62110208 MDS62110210 GASKET_5.5T GASKET_4.5T GASKET_5.0T M13-*4 M13-*3 M13-*5 MDS62110205 MDS62110206 GASKET_7.5T MDS62110209 GASKET_6.5T GASKET_8.5T M14-*4 M14-*3 M14-*5 MDS62110205 MDS62110206 MDS62110209 GASKET_7.5T GASKET_6.5T GASKET_8.5T M15-*4...
  • Page 55 LCD TV Repair Guide `11 years New Models < Applicable Model > XXLW9500-SA XXLV5500-SD ⓒ LG Electronics. Inc.2009 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 56 Overview for ’11 Broadband Model SCA (Brazil) (Hardware) ⓒ LG Electronics. Inc.2009 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 57 ATS=PQ+12W(Sao Paulo 법인 창고 도착기준) SCA - Brazil 구 Analog INFINITA Tool * LV5 Series 이상: PQ+13W / LV5 Series 미만: PQ+12W ’09 ’10 ’11 ’10.12.1 72(5/1W) Full LED,480Hz,M3,SmartTV LZ9700 55/47(9/4W) Full LED Slim Ultimate 55/47(7/1W) Nano Full LED,480Hz,M3,SmartTV LEX8 480Hz LZ9600 Perfectionis...
  • Page 58 2 types of LED - Edge Benefit: More Clear More Real Feature Edge Type Edge LED Best picture quality + thin TV w/ Local Dimming Local dimming depicts more Local Dimming deep black. LED Array Upper Metal Cover structure Model XXLW750T/W/S/G LED Array is on the side of Module 42inch : H(2) * V(8) = 16Block...
  • Page 59 2 types of LED - ALEF Benefit: More Clear More Real Feature Best picture quality + thin TV ALEF Type ALEF LED` Slimmer depth Local Dimming better picture quality Local dimming depicts more Local Dimming deep black. DBEF Prism sheets Diffuser plate Light Blocking Pattern structure...
  • Page 60 Main PCB for Broadband Main + TCON all in one XXLW9500-SA XXLV5500-SD Woofer Spk (W/O LV5500) Main processor, DDR Memory Flash Memory To PSU Micom for Key/IR sensing Front Spk HDMI switch (4:1) To T-CON BOARD Audio AMP (10W+10W) (W/ LV5500) To T-CON BOARD wifi (W/O LV5500)
  • Page 61 BCM35230 Block Diagram SYSTEM DDR3 X 16 X 2 NAND Flash(8Gb) (2Gb) Air/ ISDB-T TUNER SYSTEM EEPROM X 1 (T/C) (1Mb) ISDB-T ANALOG DIF(+/-) DEMOD Demod CVBS(M) CVBS Cable TUNER (T/C) LVDS. USB1 HUB IC USB2 CAM, WIFI Side Ready HDMI1 Audio (HDCP...
  • Page 62 Jack Interface COMP2_R/G/B COMP2 OPT [VI_SC_R1],[VI_SC_G1],[VI_SC_B1] SPDIF [SPDIF_OUT] BCM35230 COMP1 DSUB_R / G / B COMP_Y [DSUB_R+/G+/B+] [COMP1_Y] COMP_PB DSUB_ V / HSYNC [COMP1_Pb] [DSUB_V/H SYNC] COMP_PR [COMP1_Pr] RGB_DDC_SCL [RGB_DDC_SCL] EDID EEPROM [RGB_DDC_SDA] AT24C02BN-10SU-1.8 RGB_DDC_SDA [COMP1_DET] COMP DET [BSC_S_SCL] [BSC_S_SDA] MICOM [EDID_WP] RGB DET...
  • Page 63 Appendix. Block Diagram for Edge/ALEF Backlight FHD@60Hz FHD@240Hz Dual-Link LVDS FHD@60Hz FHD@240Hz Quad-Link 2D-3D FRC-II XTR T-Con Main SoC Dual-Link LVDS HF mini-LVDS Octa-Link LVDS (LGSIC) (LG1121) (LGSIC) (BCM) 3D_Sync SPI/Vsync LED BLU control LED BLU control [ All in one main PCB for XXLW9500SA, ALEF LED Backlight] Copyright ⓒ...
  • Page 64 Interconnection - 1 XXLW9500-SA [PCBs] Main PCB LED driver WIFI ASSY RF MOTION ASSY Soft Touch + IR Key PCB T-CON ASSY [Cables] Main / PSU cable LED driver Main / Module LVDS cable 51PIN LED driver / PSU T-CON to Module 80pin FFC ALEF Module Assy Multi-cable: IR+MOTION+WIFI +SPK...
  • Page 65 Interconnection - 2 XXLV5500-SA [PCBs] Main PCB Soft Touch + IR Key PCB LED driver [Cables] Main / PSU cable Main / Module LVDS cable Drive B/D Cable Multi-cable: IR + Soft Touch Edge Module Assy SPK CABLE Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 66 Interconnection - 3 [PCBs] 72LZ9700-SA Main PCB LED driver RF MOTION ASSY IR Key PCB Soft Touch Assy T-CON ASSY Sub PSU Main PSU [Cables] SPK CABLE T-CON to Module 80pin FFC Main / PSU cable Multi-cable: Main PSU/Sub PSU CABLE Main / T-Con LVDS cable 51PIN IR+MOTION+WIFI +SPK LED driver / PSU...
  • Page 67 Interconnection – sub PCB( LW9500 Series ) Soft Touch + IR PCB RF MOTION ASSY SPK unit WIFI ASSY Soft Touch RF MOTION ASSY WIFI ASSY IR PCB To Main Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 68 Interconnection – sub PCB( LV5500 Series ) Soft Touch + IR PCB SPK unit Soft Touch IR PCB To Main Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 69 Interconnection – sub PCB( 72LZ9700-SA) Soft Touch PCB IR PCB RF Motion Assy SPK unit IR PCB Soft Touch RF Motion Assy To Main To Main Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 70 Contents of LCD TV Standard Repair Process Error symptom (High category) Error symptom (Mid category) Page Remarks No video/Normal audio No video/No audio Video error, video lag/stop A. Video error Color error Vertical/Horizontal bar, residual image, light spot, external device color error No power B.
  • Page 71 Standard Repair Process Established A. Video error 2010. 12 .14 Error date LCD TV symptom No video/ Normal audio Revised date 1/13 First of all, Check whether all of cables between board is inserted properly or not. (Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) ☞A1 ☞A4 No video...
  • Page 72 Standard Repair Process Established A. Video error 2010. 12 .14 Error date LCD TV symptom No video/ No audio Revised date 2/13 ☞A4 Check various Check and Normal voltages of Power No Video/ replace voltage? No audio Board ( 3.5V,12V,20V MAIN B/D or 24V…) Replace Power...
  • Page 73 Standard Repair Process Established A. Picture Problem 2010. 12 .14 Error date LCD TV symptom Picture broken/ Freezing Revised date 3/13 . By using Digital signal level meter ☞ A6 . By using Diagnostics menu on OSD ( Menu→ Set up→ Support → Signal Test ) Check RF Signal level - Signal strength (Normal : over 50%) - Signal Quality (Normal: over 50%)
  • Page 74 Standard Repair Process Established A. Video error 2010. 12 .14 Error date LCD TV symptom Color error Revised date 4/13 ☞A8 ☞ A10/ A11 ※ Check Check color by input and replace -External Input Color Link Cable Color Color -COMPONENT Replace module Replace Main B/D error?
  • Page 75 Standard Repair Process A. Video error Established 2010. 12 .14 Error date LCD TV symptom Vertical / Horizontal bar, residual image, Revised date 5/13 light spot, external device color error Vertical/Horizontal bar, residual image, light spot Replace Module ☞A8 ☞ A10/ A11 ☞...
  • Page 76 Standard Repair Process Established B. Power error 2010. 12 .14 Error date LCD TV symptom No power Revised date 6/13 ☞A17 ☞A19 DC Power on Replace Check Power LED Normal Check Power by pressing Power Key Power Power LED operation? On ‘”High”...
  • Page 77 Standard Repair Process Established B. Power error 2010. 12 .14 Error date LCD TV symptom Off when on, off while viewing, power auto on/off Revised date 7/13 Check outlet ☞A22 Check Power Off Check A/C cord Error? Normal? Replace Main B/D Mode Abnormal Check for all 3- phase...
  • Page 78 Standard Repair Process Established C. Audio error 2010. 12 .14 Error date LCD TV symptom No audio/ Normal video Revised date 8/13 ☞A24 ☞A25 Check user Check audio B+ No audio Normal menu > 24V of Power Screen normal voltage Speaker off Board Cancel OFF...
  • Page 79 Standard Repair Process Established C. Audio error 2010. 12 .14 Error date LCD TV symptom Wrecked audio/ discontinuation/noise Revised date 9/13 → abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio ☞A25 Wrecked audio/ Check and replace Discontinuation/ Check audio speaker and...
  • Page 80 Standard Repair Process D. General Function Problem Established 2010. 12 .14 Error date LCD TV symptom Remote control & Local switch checking Revised date 10/13 1. Remote control(R/C) operating error Replace Main B/D ☞A27 ☞A27 ☞A27 Check & Repair Check B+ Check R/C itself Normal Normal...
  • Page 81 Standard Repair Process Established D. Function error 2010. 12 .14 Error date LCD TV symptom External device recognition error Revised date 11/13 Check technical Check External Input and information Signal Technical input Replace Main B/D Component input? - Fix information information? Recognition error signal...
  • Page 82 Standard Repair Process Established E. Noise 2010. 12 .14 Error date LCD TV symptom Circuit noise, mechanical noise Revised date 12/13 Replace PSU(with LED driver) Identify Check Circuit nose location of noise type noise Replace LED driver Mechanical Check location noise of noise ※...
  • Page 83 Standard Repair Process Established F. Exterior defect 2010. 12 .14 Error date LCD TV symptom Exterior defect Revised date 13/13 Module Zoom part with Replace module Adjust VCOM exterior damage damage ☞A28 Cabinet Replace cabinet damage Remote controller Replace remote controller damage Stand Replace stand...
  • Page 84 Contents of LCD TV Standard Repair Process Detail Technical Manual Error symptom Content Page Remarks Check LCD back light with naked eye LED driver B+ 24V measuring method A. Video error_ No video/Normal audio Check White Balance value Power Board voltage measuring method TUNER input signal strength checking method A.
  • Page 85 Contents of LCD TV Standard Repair Process Detail Technical Manual Continued from previous page Error symptom Content Page Remarks Check front display LED Check power input Voltage & ST-BY 5V B. Power error_No power Checking method when power is ON POWER BOARD voltage measuring method B.
  • Page 86 Standard Repair Process Detail Technical Manual Error Established error_No 2010. 12 .14 A. Video video/Normal audio symptom date LCD TV Revised Content Check LCD back light with naked eye date <ALL MODELS> After turning on the power and disassembling the case, check with the naked eye, whether you can see light from 4 locations.
  • Page 87 Standard Repair Process Detail Technical Manual Error Established A. Video error_No video/Normal audio 2010. 12 .14 symptom date LCD TV Revised Content LED driver B+ 24V measuring method date Check the DC 24V, 12V, 3.5V and Inverter on ALEF LED P202 P203 6~10...
  • Page 88 Standard Repair Process Detail Technical Manual Error Established A. Video error_No video/Normal audio 2010. 12 .14 symptom date LCD TV Revised Content Check White Balance value date <ALL MODELS> Entry method Entry method 1. Press the ADJ button on the remote controller for adjustment. 1.
  • Page 89 Standard Repair Process Detail Technical Manual Error Established A. Video error_No video/ Audio 2010. 12 .14 symptom date LCD TV Revised Content Power Board voltage measuring method date ALEF LED Check the DC 24V, 12V, 3.5V. (Power Board ↔ Main Board) - 공통...
  • Page 90 Standard Repair Process Detail Technical Manual Error Established A. Video error_Video error, video lag/stop 2010. 12 .14 symptom date LCD TV Revised TUNER input signal strength checking method Content date <ALL MODELS> MENU - Set up support - signal test select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.)
  • Page 91 Standard Repair Process Detail Technical Manual Error Established A. Video error_Video error, video lag/stop 2010. 12 .14 symptom date LCD TV Revised LCD-TV Version checking method Content date <ALL MODELS> 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment ⓒ...
  • Page 92 Standard Repair Process Detail Technical Manual Error A. Video error _Vertical/Horizontal bar, Established 2010. 12 .14 symptom residual image, light spot date LCD TV Revised Content LCD TV connection diagram (1) date <ALL MODELS> As the part connecting to the external input, check the screen condition by signal ⓒ...
  • Page 93 Standard Repair Process Detail Technical Manual Error Established A. Video error_Video error, video lag/stop 2010. 12 .14 symptom date LCD TV Revised TUNER checking part Content date <ALL MODELS> Checking method: 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2.
  • Page 94 Standard Repair Process Detail Technical Manual Error Established A. Video error_Color error 2010. 12 .14 symptom date LCD TV Revised Content Check Link Cable (LVDS) reconnection condition date <ALL MODELS> Check the contact condition of the Link Cable, especially dust or mis insertion. ⓒ...
  • Page 95 Standard Repair Process Detail Technical Manual Error Established A. Video error_Color error 2010. 12 .14 symptom date LCD TV Revised Adjustment Test pattern - ADJ Key Content date You can view 6 types of patterns using the ADJ Key Checking item : 1. Defective pixel 2.
  • Page 96 Appendix : Exchange T-Con Board (1) Solder defect, CNT Broken Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Solder defect, Short/Crack...
  • Page 97 Appendix : Exchange T-Con Board (2) Abnormal Power Section Abnormal Power Section Solder defect, Short/Crack Abnormal Display Fuse Open, Abnormal power section Solder defect, Short/Crack Noise GRADATION GRADATION A - 2/5 ⓒ LG Electronics. Inc.2009 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 98 Appendix : Exchange PSU(LED driver) No Light Dim Light Dim Light Dim Light No picture/Sound Ok A - 3/5 ⓒ LG Electronics. Inc.2009 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 99 Appendix : Exchange the Module (1) Panel Mura, Light leakage Panel Mura, Light leakage Press damage Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Press damage A - 4/5 ⓒ LG Electronics. Inc.2009 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 100 Appendix : Exchange the Module (2) Vertical Line Vertical Block Vertical Block Source TAB IC Defect Source TAB IC Defect Source TAB IC Defect Horizontal Block Horizontal line Horizontal Block Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Un-repairable Cases...
  • Page 101 Standard Repair Process Detail Technical Manual Error Established B. Power error _No power 2010. 12 .14 symptom date LCD TV Revised Content Check front display LED date Front LED control : Menu Option Power Indicator Standby light ON ST-BY condition: Red Power ON condition: white ⓒ...
  • Page 102 Standard Repair Process Detail Technical Manual Error Established B. Power error _No power 2010. 12 .14 symptom date LCD TV Revised Content Check power input voltage and ST-BY 5V date For ’10 models, there is no voltage out for st-by purpose. When st-by, only 3.5V is normally on.
  • Page 103 Standard Repair Process Detail Technical Manual Error Established B. Power error _No power 2010. 12 .14 symptom date LCD TV Revised Content Checking method when power is ON date ALEF LED Check “power on” pin is high (Power Board ↔ Main Board) - 공통...
  • Page 104 Standard Repair Process Detail Technical Manual Error Established B. Power error _Off when on, off whiling viewing 2010. 12 .14 symptom date LCD TV Revised Content POWER OFF MODE checking method date <ALL MODELS> Entry method 1. Press the IN-START button of the remote controller for adjustment 2.
  • Page 105 Standard Repair Process Detail Technical Manual Error Established C. Audio error_No audio/Normal video 2010. 12 .14 symptom date LCD TV Revised Content Checking method in menu when there is no audio date <ALL MODELS> Checking method 1. Press the MENU button on the remote controller 2.
  • Page 106 Standard Repair Process Detail Technical Manual Error Established C. Audio error_No audio/Normal video 2010. 12 .14 symptom date LCD TV Revised Voltage and speaker checking method Content date when there is no audio <ALL MODELS> (Power Board ↔ Main Board) - 공통...
  • Page 107 Standard Repair Process Detail Technical Manual Error D. Function error_ No response in remote controller, Established 2010. 12 .14 symptom key error date LCD TV Revised Content Remote controller operation checking method date <ALL MODELS> P8200 KEY1 KEY2 ③ St 3.5V LED_B/logo_PWM ④...
  • Page 108 Standard Repair Process Detail Technical Manual Error Established D. VCOM Adjustment 2010. 12 .14 symptom date LCD TV Revised Content Sequence of the Vcom adjustment date 1. Case ■ LCD module change ■ T-Con board change 2. Equipment ■ Service Remote controller 3.

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