User's Manual

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Printed in KoreaP/NO : MFL67361006 (1206-REV00)

CHASSIS : LD23E

MODEL : 42LM860V/W 42LM860V/W-ZB

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

LED LCD TV

SERVICE MANUAL

North/Latin America http://aic.lgservice.com

Europe/Africa http://eic.lgservice.com

Asia/Oceania http://biz.lgservice.com

Internal Use Only

Summary of content (117 pages)

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Internal Use Only North/Latin America Europe/Africa Asia/Oceania http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LD23E MODEL : 42LM860V/W 42LM860V/W-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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CONTENTS CONTENTS . ............................................................................................. 2 SAFETY PRECAUTIONS ......................................................................... 3 SERVICING PRECAUTIONS..................................................................... 4 SPECIFICATION........................................................................................ 6 ADJUSTMENT INSTRUCTION...............................................................
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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. Do not modify the original design without permission of manufacturer.
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SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First. General Servicing Precautions 1.
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IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. 3. Solder the connections.
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SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This specification is applied to the LCD TV used LD23E chassis. 3. Test method 2. Requirement for Test Each part is tested as below without special appointment.
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No.
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5. Component Video Input (Y, Cb/Pb, Cr/Pr) No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock Porposed 1 720*480 15.73 60 13.5135 SDTV ,DVD 480I 2 720*480 15.73 59.94 13.5 SDTV ,DVD 480I 3 720*480 31.50 60 27.027 SDTV 480P 4 720*480 31.47 59.94 27.0 SDTV 480P 5 1280*720 45.00 60.00 74.25 HDTV 720P 6 1280*720 44.96 59.94 74.176 HDTV 720P 7 1920*1080 33.75 60.00 74.25 HDTV 1080I 8 1920*1080 33.72 59.94 74.176 HDTV 1080I 9 1920*1080 67.500 60 148.
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7. HDMI Input No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC Proposed HDMI-PC DDC 1 720*400 31.468 70.08 28.321 Х 2 640*480 31.469 59.94 25.17 VESA O 3 800*600 37.879 60.31 40.00 VESA O 4 1024*768 48.363 60.00 65.00 VESA(XGA) O 5 1360*768 47.72 59.8 84.75 WXGA O 6 1280*1024 63.595 60.0 108.875 SXGA O 7 1920*1080 67.5 60.00 148.5 WUXGA O HDMI-DTV 1 640*480 31.469 / 31.5 59.94/ 60 25.125 2 720*480 31.469 / 31.5 59.
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8.2.2. HDMI 1.4b No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC 1 640*480 31.469 / 31.5 59.94/ 60 25.125 1 2 720*480 31.469 / 31.5 59.94 / 60 27.00/27.03 3 720*576 31.25 50 27 17,18 4 720*576 15.625 50 27 21 5 1280*720 37.500 50 74.25 19 6 1280*720 44.96 / 45 59.94 / 60 74.17/74.25 4 7 1920*1080 33.72 / 33.75 59.94 / 60 74.17/74.25 5 8 1920*1080 28.125 50.00 74.25 20 9 1920*1080 26.97 / 27 23.97 / 24 74.17/74.
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8.3. RGB-PC Input(3D) No. 1 Resolution 1920*1080 H-freq(kHz) 67.5 V-freq.(Hz) Pixel clock(MHz) 60 148.5 3D input proposed mode Side by Side, Top & Bottom Proposed HDTV 1080P 8.4. Component Input(3D) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock 3D input proposed mode Proposed 1 1280*720 45.00 60.00 74.25 Side by Side, Top & Bottom HDTV 720P 2 1280*720 44.96 59.94 74.176 Side by Side, Top & Bottom HDTV 720P 3 1920*1080 33.75 60.00 74.
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ADJUSTMENT INSTRUCTION 1. Application Range 3.1.3. Adjustment (1) Adjustment method - U sing RS-232, adjust items in the other shown in "3.1.3.3)" This specification sheet is applied to all of the LED LCD TV with LD23E chassis. (2) Adj. protocol 2. Designation Protocol (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument. (2) Adjustment must be done in the correct order.
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3.3. LAN Inspection 3.4. LAN PORT INSPECTION(PING TEST) Connect SET → LAN port == PC → LAN Port 3.3.1. Equipment & Condition SET ▪ Each other connection to LAN Port of IP Hub and Jig PC 3.4.1. Equipment setting (1) Play the LAN Port Test PROGRAM. (2) Input IP set up for an inspection to Test Program. *IP Number : 12.12.2.2 3.4.2. LAN PORT inspection(PING TEST) (1) Play the LAN Port Test Program. (2) Connect each other LAN Port Jack. (3) Play Test (F9) button and confirm OK Message.
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* Manual Download (Model Name and Serial Number) If the TV set is downloaded by OTA or service man, sometimes model name or serial number is initialized.(Not always) It is impossible to download by bar code scan, so It need Manual download. 1) Press the "Instart" key of Adjustment remote control. 2) Go to the menu "6.Model Number D/L" like below photo. 3) Input the Factory model name(ex 42LD450-TA) or Serial number like photo. 3.6.2.
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4. Manual Adjustment * ADC adjustment is not needed because of OTP(Auto ADC adjustment) ▪ Reference - HDMI1 ~ HDMI4 / RGB - In the data of EDID, bellows may be different by S/W or Input mode. 4.1 EDID(The Extended Display Identification Data)/DDC(Display Data Channel) download ⓐ Product ID ⓑ Serial No: Controlled on production line. ⓒ Month, Year: Controlled on production line: ex) Monthly : ‘01’ → ‘01’ Year : ‘2012’ → ‘16’ ⓓ Model Name(Hex): LGTV ⓔ Checksum(LG TV): Changeable by total EDID data.
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4.2.
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Ex) wb 00 00 -> Begin white balance auto-adj. wb 00 10 -> Gain adj. ja 00 ff -> Adj. data jb 00 c0 ... ... wb 00 1f → Gain adj. completed *(wb 00 20(Start), wb 00 2f(end)) → Off-set adj. wb 00 ff → End white balance auto-adj. ▪ Adjustment condition and cautionary items 1) Lighting condition in surrounding area Surrounding lighting should be lower 10 lux. Try to isolate adj. area into dark surrounding.
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4.3. EYE-Q function check 4.4. Local Dimming Function Check (1) Turn on TV. (2) Press EYE key of Adjustment remote control. Step 1) Turn on TV. Step 2) At the Local Dimming mode, module Edge Backlight moving right to left Back light of IOP module moving. Step 3) Confirm the Local Dimming mode. Step 4) Press "exit" key. (3) Cover the Eye Q II sensor on the front of the using your hand and wait for 6 seconds. (4) Confirm that R/G/B value is lower than 10 of the "Raw Data (Sensor data, Back light)".
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4.7. Wi-Fi Test 4.9. Inspection of light scattering Step 1) Turn on TV Step 2) Select Network Connection option in Network Menu. ▪ Test Method (1) Push “Power only” key. (2) Push “HDMI” hot key. (3) Inspect whether light scattering is occurred in internal black pattern or not. (4) Push “Power only” key. Step 3) Select Start Connection button in Network Connection. 4.10. Option selection per country 4.10.1. Overview Step 4) If the system finds any AP like blow PIC, it is working well.
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5. Tool Option selection ▪ Method : Press "ADJ" key on the Adjustment remote control, then select Tool option. 9. USB S/W Download(Service only) (1) Put the USB Stick to the USB socket. (2) Automatically detecting update file in USB Stick. - If your downloaded program version in USB Stick is Low, it didn't work. But your downloaded version is High, USB data is automatically detecting.
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EXPLODED VIEW IMPORTANT SAFETY NOTICE 900 Dual Play AG2 * Set + Stand * Stand Base + Body A21 A2 300 301 501 580 500 122 A22 200 A10 120 AG1 123 800 LV1 530 541 540 521 810 310 510 560 410 910 400 920 570 710 700 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.
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System Configuration +3.3V_NORMAL NVRAM Clock for LG1152 3 8 for DiiVA(China) VCC Write Protection WP - Low : Normal Operation - High : Write Protection 2 I2C_SDA2 HP_DET I2C_SCL2 EPHY_INT 7 VSS 3 A0’h SMARTCARD_DATA SEL_USB1 SMARTCARD_RST 4 SMARTCARD_PWR_SEL SCL 6 I2C_SCL5 SEL_USB1 SEL_USB2 SEL_USB3 1M A2 GND_2 X-TAL_2 1 SEL_USB2 R112 1 A1 4 2 A0 XIN_MAIN 24MHz X101 GND_1 X-TAL_1 C100 8pF 50V C101 8pF 50V C111 0.
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0.1uF 0.1uF 0.1uF 0.1uF C337 C342 C343 C346 0.1uF 0.1uF C334 0.1uF C323 C329 0.1uF 0.1uF C320 0.1uF C317 C302 10uF C326 10uF 0.1uF IC100 LG1152D-B1 Max 680mA L300 BLM18PG121SN1D ESD_LG1152 ZD301 5V 0.1uF C338 C332 10uF C370 VCC1.5V_MAIN (18) C333 0.1uF 0.1uF C369 10uF C366 10uF C359 10uF 0.1uF C305 10uF 0.1uF 0.1uF C321 C312 10uF C318 LG1152D +1.
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C +5V_NORMAL Q506 MMBT3904(NXP) Place these close to tuner EU C510 0.1uF 16V TU_CVBS EU R527 10K B E EU R507 10K EU R593 220 EU R592 220 EU 680pF C506 OPT IC101 LG1152AN-B2 DTV_ATV_SELECT INTR_GBB INTR_HDMI1 IC500 NLASB3157DFT2G IC100 LG1152D-B1 L1 AH2 L2 AG2 L3 AF2 INTR_AFE3CH STPI_CLK INTR_HDMI1 STPI_SOP INTR_AFE3CH STPI_VAL E 100 L503 1uH SELECT SC_CVBS_IN C508 150pF 50V EU C509 150pF EU EU R614 75 1% VCC 5.
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IC700 H5TQ2G83BFR-PBC IC703 H5TQ2G83BFR-PBC M0_DDR_VREFCA VCC1.5V_MAIN M0_DDR_DQ7 M0_DDR_DQ8 M0_DDR_DQ9 M0_DDR_DQ10 M0_DDR_DQ11 M0_DDR_DQ12 M0_DDR_DQ13 M0_DDR_DQ14 M0_DDR_DQ15 H4 C709 0.1uF C710 0.1uF M2 C711 0.1uF M10 C712 0.
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+5V_CI_ON CI HOST I/F 5V <=> 3.3V CI_DATA[0-7] R6209 10K OPT +3.
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C2307 0.1uF 16V 6 GND GND GND 7 8 9 10 3.5V 3.5V 11 12 3.5V 13 14 GND GND C2317 0.1uF 50V GND 15 16 GND/V-sync 12V 17 18 INV ON 12V 19 20 A.DIM 12V 21 22 P.DIM1 GND/P.DIM2 23 24 Err OUT L2302 +3.3V_NORMAL R2330 1K LPB R2302 100 INV_CTL POWER_DET RESET 2 1 GND C2365 0.1uF 16V PD_24V R2372 100K +24V not to RESET at 8kV ESD Q2304 MMBT3904(NXP) R2341 10K A_DIM 3 C2359 0.1uF 16V PD_+12V R2363 1.2K 1% C2346 0.
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Renesas MICOM +3.3V_NORMAL R3035 4.7K OPT For Debug 12V_EXT_PWR_DET 10K HDMI_WAUP:HDMI_INIT R3000 +3.5V_ST GND +3.5V_ST MICOM_RESET 22 (GP3_Soft touch) MHL MODEL_OPT_6 NON_GED GED P120/ANI19 KEY1 MODEL1_OPT_1 10K OPT SIDE_HP_MUTE MODEL1_OPT_4 MODEL1_OPT_3 24 23 22 P27/ANI7 21 25 20 12 19 P26/ANI6 18 26 17 R3036 MODEL1_OPT_0 27 16 +3.
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R1X2N 7 R1X2P 8 220K R3206 62K R3201 1/10W 3 2 1 ARC TX2P TX2N TX1P TX1N TX0P TX0N TXCP TXCN TCVDD12 TPVDD12 R0XCN R0XCP R0X0N R0X0P R0X1N R0X1P R0X2N R0X2P AVDD12_3 VDD12_3 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 VDD33_2 43 44 CBUS_HPD4 42 DSDA4 DSCL4 41 R3PWR5V 40 39 DSCL3 CBUS_HPD3 38 DSDA3 36 37 R1PWR5V CBUS_HPD1 35 DSCL1 33 32 34 DSDA1 R0PWR5V CBUS_HPD0 30 29 31 DSCL0 DSDA0 R4X0N SPDIF_OUT_ARC R3221 10 OPT IN DDC_
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RGB/ PC AUDIO/ SPDIF RGB_5V RGB PC +5V_NORMAL RGB_5V A1 C 8 R3642 2.7K 2.7K VCC R3645 10K RGB_EDID E1 E2 VSS 2 7 3 6 4 5 JK3602 2F11TC1-EM52-4F +3.3V_NORMAL WC EDID_WP R3643 SCL 22 SPDIF OUT RGB_DDC_SCL R3644 SDA 22 RGB_DDC_SDA C3633 18pF 50V C3634 18pF 50V R3615 33 R3620 2.7K OPT SPDIF_OUT D3613-*1 5.5V ADUC 5S 02 0R5L ESD_MTK DSUB_VSYNC D3621 ADUC 5S 02 0R5L 5.5V OPT D3615 30V OPT D3613 5.5V ADUC 5S 02 0R5L OPT C3615 0.
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HP_LOUT JK3700 KJA-PH-0-0177 +3.3V_NORMAL GND 5 R3700 10K HP_OUT HP_DET HP_ROUT L 4 DETECT 3 R 1 EAG61030001 HP_OUT VA3700 5.6V OPT ESD for MTK ESD for LG1152 VA3700-*1 VA3700-*2 5.6V 5.6V ESD_MTK_HP_OUT ESD_LG1152_HP_OUT THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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12V_COMMERCIAL_OUT 12V 1A FOR COMMERCIAL(RS-232C POWER) 12V_COMMERCIAL_OUT CVBS 1 PHONE JACK RS232C 10 5 +3.3V_NORMAL 9 4 IR_OUT IC3800 0.1uF C1+ C3800 1 16 0.1uF +3.5V_ST V+ C3801 2 15 3 14 GND D3805 20V OPT D3804 20V OPT RS232 C1- 3 DOUT1 AV1_CVBS_DET 7 RS232 100 R3821 VCC RS232 R3810 10K 8 RS232 100 R3820 +3.5V_ST MAX3232CDR 2 JK3800 KJA-PH-1-0177 6 OPT_RS232 R3834 1 10K D3800 5.
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+3.5V_ST IR & KEY RGB Sensor EEPROM_SCL C KEY2 C4100 0.1uF +3.5V_ST R4107 10K B E EEPROM_SDA R4114 100 +3.5V_ST COMMERCIAL_IR R4103 3.3K R4102 10K IR Q4100 MMBT3904(NXP) COMMERCIAL_IR KEY1 COMMERCIAL_IR R4101 1K R4104 47K COMMERCIAL_IR C IR_BYPASS +3.5V_ST E C4102 0.1uF R4124 100 1 2 D4101 5.6V AMOTECH CO., LTD. OPT D4106 ADUC 20S 02 010L 20V OPT D4100 5.6V AMOTECH CO., LTD.
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USB_DM1 25V 1uF C4209 USB_DP1 USB_HUB_IC_IN_DP 1/16W 1% XTALIN/CLKIN VDD33_3 [EP]VSS 36 RBIAS PLLFILT 3 USBDM_DN[2] 4 USBDP_DN[2] 5 VDDA33_1 6 NC_1 21 7 NC_2 NC_7 20 8 NC_3 NC_6 19 9 NC_4 C4213 0.1uF C4214 1uF 25V 10 C4212 0.1uF OPT VDDA33_2 11 C4211 0.1uF OPT C4206 TEST PRTPWR[1]/BC_EN[1] OCS_N[1] 12 13 C4210 0.1uF OPT +3.3V_NORMAL R4210 USB_CTL1 100K OPT /USB_OCD1 USB_CTL2 /USB_OCD2 OPT R4207 OPT R4208 22 0.
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+3.3V_NORMAL +5V_USB FOR USB1 R4327 10K OPT MAX 2A R4323 10K POWER_ON/OFF2_4 IC4303 TPS2554 11 3AU04S-305-ZC-(LG) JK4303 1 R1 R4336 20K C4328 0.01uF 50V ILIM1 OPT C4338 1000pF 50V USB_DM1 2 C4334 4700pF 50V 6 1% R2 2K R4339 USB_DP1 Vout=0.8*(1+R1/R2) DVR Ready MAX 1.
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+3.3V_NORMAL +12V EU R4601 10K Full Scart(18 Pin Gender) CLOSE TO JUNCTION SC_DET EU E MMBT3906(NXP) Q4600 EU D4611-*1 5.6V 200pF D4611-*2 5.6V 200pF D4611 5.6V OPT ESD_LG1152_SCART C4604 0.1uF C ESD_MTK_SCART SC_CVBS_IN D4609-*2 5.5V 15pF ESD_LG1152_SCART D4609-*1 5.5V 15pF ESD_MTK_SCART D4609 5.5V OPT SHIELD AV_DET 17 16 15 14 13 12 11 75 COM_GND EU Q4601 EU MMBT3904(NXP) C R4602 390 B Gain=1+Rf/Rg Rf R4600 EU C4605 100uF 16V D4610-*1 5.5V 15pF ESD_MTK_SCART SYNC_OUT EU C4606 0.
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ZigBee_Radio Pulse M_REMOTE OPTION +3.3V_NORMAL P4800 12507WR-08L L4800 120-ohm M_REMOTE 1 M_REMOTE 3.3V C4800 2 3 4 5 6 7 8 GND 0.1uF AR4800 100 1/16W RX M_REMOTE_RX TX M_REMOTE_TX RESET M_RFModule_RESET DC M_RFModule_ISP DD 3D_SYNC_RF GND M_REMOTE 9 3D_SYNC_RF Only For PDP ALL M_REMOTE OPTION THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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Ethernet Block LAN_JACK_POWER C5000 0.1uF 16V C5001 0.01uF 50V C5002 0.1uF 16V C5003 0.01uF 50V JK5000 XRJH-01A-4-DA7-180-LG(B) 1 2 3 4 5 6 7 8 9 10 11 D1 D2 D3 D4 P1[CT] P2[TD+] EPHY_TDP P3[TD-] EPHY_TDN P4[RD+] EPHY_RDP P5[RD-] EPHY_RDN P6[CT] P7 D5000 D5001 D5002 5.5V OPT 5.5V OPT 5.5V OPT D5003 5.5V OPT P8 P9 P10[GND] P11 YL_C YL_A GN_C GN_A ESD for MTK ESD for LG1152 12 ESD_LG1152 SHIELD D5000-*1 ESD_MTK D5000-*2 ADUC 5S 02 0R5L 5.
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Ethernet Block +3.3V_NORMAL +3.3V_NORMAL C5203 0.1uF 16V 4.7K C5201 0.1uF 16V R5215 Place 0.1uF close to each power pins LAN_JACK_POWER R5216 C5200 4.7uF 10V 4.7K +3.3V_NORMAL EPHY_LINK EPHY_ACTIVITY R5217 4.7K ET_RXER ET_COL/SNI Place this cap. near IC EPHY_CRS_DV R5210 X5200 25MHZ +3.3V_NORMAL 22 25MHz, CL 18pF, ESR , max 30 Ohm, +/-30ppm 5 MDIO 22 MDC 21 PHYRSTB 20 TXEN EPHY_LINK CRS/CRS_DV COL RXER/FXEN DVDD10OUT AVDD33_2 17 TXD[1] C5212 0.
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+3.3V_NORMAL DUAL COMPONENT C5415 1000pF 50V 2ND : 0TR387500AA 50V 1ST : 0TRIY80001A C5416 L5401 BLM18PG121SN1D AUD_MASTER_CLK +24V_AMP 22000pF Q1801 AMP_RESET_N OPT R5406 3.3 3 LF 4 DGND_PLL 5 GND_1 6 10K E PVDD1_1 PVDD1_2 PVDD1_3 OUT1A_1 OUT1A_2 BST1A /RESET AD PGND1A 37 38 39 40 41 42 43 PGND1B R5414 12 33 BST1B 32 VDR1 31 VCC_5 28 BST2A WCK 10 27 PGND2A BCK 11 26 OUT2A_2 SDA 12 25 OUT2A_1 R5408 12 5.1K C5434 0.47uF 50V SPEAKER_L C5437 0.
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+24V_AMP_WOOFER +24V L5501 CIS21J121 C5529 0.1uF 50V +3.3V_NORMAL FW25001-02(SPK 2P) WOOFER C5513 1000pF 50V WOOFER DVDD_PLL 3 LF 4 DGND_PLL 100 WOOFER C5510 1000pF 50V PVDD1_2 PVDD1_1 37 38 OUT1A_1 OUT1A_2 PVDD1_3 39 40 42 PGND1A BST1A AD GND_IO CLK_I VDD_IO /RESET 44 45 46 OUT1B_2 35 OUT1B_1 34 PGND1B 33 BST1B 32 VDR1 WCK 10 27 PGND2A BCK 11 26 OUT2A_2 SDA 12 25 OUT2A_1 WOOFER C5519 0.1uF 50V 0.1uF 50V L5503 10.0uH NRS6045T100MMGK L5504 10.
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+12V EU AUD_OUT >> EU/CHINA_HOTEL_OPT IC6000 AZ4580MTR-E1 L6000 EU EU R6000 OUT1 C6000 1uF 25V EU OPT C6002 6800pF OPT R6002 33K EU R6004 IN1- 470K C6003 33pF EU IN1+ VEE SCART_AMP_L_FB 1 8 2 7 4 C6004 EU 0.1uF OUT2 50V SIGN600005 R6011 2.2K [SCART AUDIO MUTE] EU C6008 DTV/MNT_R_OUT EU 3 VCC 6 IN2- R6008 EU 33K OPT R6010 470K 5 OPT 1uF C6007 25V DTV/MNT_L_OUT 6800pF +3.
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CI POWER ENABLE CONTROL +5V_CI_ON +5V_NORMAL G C6202 0.1uF 16V D CI OPT S Q6201 AO3407A CI R6241 22K R6221 10K OPT R6223 4.7K PCM_5V_CTL R6218 10K CI C6207 4.7uF 10V OPT C6210 1uF 25V OPT R6248 10K CI R6242 2.2K CI C Q6200 MMBT3904(NXP) CI B CI E Option FOR MTK Option FOR LG1152 C6210-*1 1uF 25V CI_MTK THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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+3.3V_NORMAL EARPHONE AMP L6400 120-ohm BLM18PG121SN1D C6403 10uF 10V Place Near jack Side C6405 0.1uF 16V R6406 10 C6402 1uF 10V C6400 1uF 10V 16 INL- HP_LOUT_MAIN 15 1/16W 5% +3.3V_NORMAL 14 13 1 12 2 11 HPVDD C6406 2.2uF 10V HP_ROUT_MAIN 3 10 4 6 OPT R6401 OPT G0 OUTR R6400 4.7K 5 R6402 4.7K 9 EAN60724701 7 PGND CPN 8 C6407 2.
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T/C/S & H/NIM & T2/C TUNER(EU & CHINA) RF_SWITCH_CTL USE: T2/C,T/C,ATSC,DTMB.ISDB-T TU6501 TDSN-G351D TU6500 TDSS-G151D TU6504 TDSH-T151F TU6502 TDSQ-H051F TU6503 TDSQ-G051D +3.3V_TU CHB +5V_TU L6508 BLM18PG121SN1D RESET T/C_H/NIM_V 1 2 NC T2/C_F/NIM_DEV NC_1 1 RESET CHB_V 2 RESET 3 SCL T/C/S2_V +5V[SPLITTER] 1 1 2 RESET 3 TU_SCL CHB N.C_1 RF_SWITCH OPT R6511 100K C6520 0.
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DCDC_GND and A_GND are connected DCDC_GND and A_GND are connected in pin#27 PCB_GND and A_GND are connected DVB-S2 LNB Part Allegro (Option:LNB) Input trace widths should be sized to conduct at least 3A Ouput trace widths should be sized to conduct at least 2A 2A D6901-*1 LNB_SX34 D6903-*1 40V 40V LNB_SX34 D6901 LNB_SMAB34 D6903 C6901 0.
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[51Pin LVDS Connector] (For FHD FRC3 HS_LVDS) P7200 L/DIM0_SCLK FI-RE51S-HF-J-R1500 L/DIM0_MOSI L/DIM0_VS 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 41 42 43 44 45 46 47 48 49 50 51 NC I2C_BE_SDA1 L/DIM0_SCLK NC I2C_BE_SCL1 L/DIM0_MOSI NC FRC3_RESET L/DIM0_VS NC I2C_BE_SDA1 NC I2C_BE_SCL1 NC FRC3_RESET LVDS_SEL R7201 0 NC FRC3_FLASH_WP NC R7200 10K 1 BPL_IN L/DIM_ENABLE GND TP7204 LOCAL_DIM_EN LOCAL_DIM_EN RA0N TXA0N RA0P TX
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LOCAL DIMMING [To LED DRIVER] +3.3V_NORMAL P7600 12507WR-08L R7600 10K OPT 1 R7601 10K 2 AR7600 33 1/16W 3 L/DIM0_SCLK 4 5 L/DIM0_MOSI 6 I2C_SCL1 7 8 9 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc.
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eMMC I/F EMMC_VCCQ 10K 10K 10K 10K R8104 R8105 R8106 R8107 EMMC_DATA[0] A3 EMMC_DATA[1] A4 EMMC_DATA[2] A5 EMMC_DATA[3] EMMC_DATA[4] B2 EMMC_DATA[5] B4 B3 EMMC_DATA[6] EMMC_DATA[7] B5 AR8101 22 1/16W B6 DAT0 NC_25 DAT1 NC_26 DAT2 NC_27 DAT3 NC_28 DAT4 NC_29 DAT5 NC_30 DAT6 NC_31 DAT7 NC_32 NC_33 NC_34 M6 M5 CLK NC_35 CMD NC_36 NC_37 NC_38 A6 C5 E5 E8 AR8102 E9 22 E10 EMMC_CMD F10 EMMC_RST G3 G10 H5 OPT J5 C8107 10pF 50V K6 K7 K10 P7 P10 NC_3 NC_39 N
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BLM18PG121SN1D L8900 LOGO_LIGHT +3.5V_ST Place Near Micom +3.5V_ST P8900 12507WR-03L 1 LOGO_LIGHT 2 10K R8902 OPT R8900 100 3 LOGO_LIGHT 4 LOGO_LIGHT B C LOGO_LIGHT LOGO_LIGHT R8901 10K LOGO_LIGHT C8900 0.1uF 16V Q8900 1K R8903 E LOGO_LIGHT MMBT3904(NXP) THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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IC9300 LG1132 XTAL(24.
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DDR0 PHY VREF +1.5VQ IC9400 H5TQ1G63DFR-PBC DDR_A[0-13] IC9300 LG1132 +0.75V_VREF_M0 +0.75V_VREF_M0 +1.5VQ +0.75V_VREF_M1 +1.5V_LG1132 +1.5VQ R9406 1K 1% DDR_A[0-13] R9410 1K 1% +0.75V_VREF_M1 DDR_A[0] DDR_A[1] N3 DDR_A[2] P3 DDR_A[3] DDR_A[4] DDR_A[5] N2 DDR_A[6] DDR_A[7] R8 P7 P8 P2 R2 T8 DDR_A[8] DDR_A[9] R3 L7 DDR_A[10] R7 DDR_A[11] DDR_A[12] N7 T3 DDR_A[13] Connect A13 for Using 2Gbit Memory N8 M3 VREFDQ 100 1% DDR_CKE +1.
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3D-Depth Analog for 2.5V +2.5V_LG1132 +2.5V IC9500 AP7173-SPG-13 HF(DIODES) +1.5V_LG1132 +1.5V_DDR PG +5V_USB ZD9500 5.48VTO5.76V VCC R9500 EN 10K 8 2 9 BLM18PG121SN1D 1 THERMAL IN L9500 C9500 10uF 10V Max 600 mA [EP] +3.3V_NORMAL 7 3 6 OUT FB R9502 4.3K R1 1% SS C9513 10uF 10V 1.5A 4 5 GND C9501 2200pF 50V R9501 2K 1% R2 C9514 0.1uF 16V Place near USB JACK Vout=0.8*(1+R1/R2) L9 CORE for 1.0V (UD Model only / LG1132 DDR=792Mh) READY LG1152 for 1.0V UD +12V +1.0VDC +1.
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10K R10007 10K R10006 +3.3V_NORMAL +3.3V_NORMAL +12V_MOTOR C10004 0.1uF 16V 8.2V UDZS8.2B 8.2V ZD10001 ZD10000 UDZS8.2B R10009 100 C10005 0.1uF 16V 4.7K BD6222HFP R10023 4.
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IR BLASTER Pattern Width : 0.5mm +3.3V_IR_Bla +5V_NORMAL G IR_Bla AO3438 Q11002 IR_Bla Q11001 SBT2222A_AUK E L11001 BLM18PG121SN1D IR_Bla R11019 0 IR_Bla IR_Bla R11021 C11004 C11008 10uF 10uF 10V IR_Bla IR_Bla 10K R 1 DETECT 3 JP11001 D11002 B IR_Bla 100 +3.3V_IR_Bla S D R11015 D11001 C IR_Bla C11009 0.1uF 16V OPT IR_Bla JP11002 Pattern Width : 0.5mm 0 IR_Bla +3.3V_NORMAL IR_Bla R11020 L 4 GND 5 KJA-PH-0-0177 JK11001 C11006 0.1uF 16V OPT Close to JK11001 +3.
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IC100 LG1122 R109 100 R114 100 R117 100 R120 100 R122 100 R154 100 1% 1% 1% 1% 1% 1% AC1 RXB4N AC2 RXB4P AB3 RXB3N AC3 RXB3P AB2 RXBCLKN AB1 RXBCLKP AA1 RXB2N AA2 RXB2P Y3 RXB1N AA3 RXB1P Y2 RXB0N Y1 RXB0P R110 100 R121 100 R118 100 R115 100 R123 100 R155 100 RXA4N 1% 1% 1% 1% 1% 1% W2 RXA4P V3 RXA3N W3 RXA3P V2 RXACLKN V1 RXACLKP U1 RXA2N U2 RXA2P T3 RXA1N U3 RXA1P T2 RXA0N T1 RXA0P L/DIM0_VS R148 33 OPT R149 33 R150 33 OPT 33 OPT
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IC200 H5TQ1G63DFR-PBC DDR0_A[0-12] IC100 LG1122 +0.75V_VREF0_M0 IC201 H5TQ1G63DFR-PBC DDR1_A[0-12] DDR0_A[0-12] DDR1_A[0-12] +0.75V_VREF1_M0 +0.
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FRC-III AIP for 1.8V FRC-III CORE for 0.9V TYP 0.278A TYP 2.521A MAX 0.345A MAX 3.124A VLCD_POWER (+12V) VLCD_POWER (+12V) L302 L306 MLB-201209-0120P-N2 MLB-201209-0120P-N2 +1.8V C300 0 C309 C311 0.1uF 10uF 10uF 16V 25V OPT 25V [EP]GND 10K 22pF 1% VFB Vout=0.765*(1+R1/R2) VREG5 R2 1 2 8 9 30K THERMAL EN 50V R300 7 6 SS 22K 1% 4 5 25V C334 100pF GND C312 C315 C301 C303 22uF 22uF 1uF 3300pF 10V 10V 25V 50V L304 3.6uH [EP]LX NR8040T3R6N R1 L300 3.
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IC401 LGE5812B IC401 LGE5812B [All of OPT decaps must be placed on PCB Bottom side] +3.3VDD TX0P A13 TX0N B13 TX1P A12 TX1N B12 TX2P A11 TX2N B11 TX3P A10 TX3N B10 TX4P A9 TX4N B9 TX5P A8 TX5N B8 TX6P A7 TX6N B7 TX7P A6 TX7N B6 SOE 2.
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[PMIC Block] SWB PANEL_VCC (+12V) VCC_LCM (+3.3V) R514 0 VL (+5V) L503 22uH R506 150K 1% R533 0 2.2A C514 10uF 25V C510 10uF 25V D503 SMAB34 40V C532 1uF 25V C536 22uF 10V C540 0.1uF 50V C538 22uF 10V R536 5.1K TCOMP C527 0.1uF 50V PANEL_VCC (+12V) 28 SCL PVINB12_1 BST1 SWB1_2 SWB1_1 NC_4 VLOGIC1 SWB2 PGND2 37 36 35 34 33 32 31 MAX17139 25 NC_3 BST3 7 24 CTRLN SWB3 8 23 NC_2 9 22 VGL 10 21 VGH SWO NC_1 0 VGL (-5V) VCC_LCM (+3.
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[80P mini-LVDS output wafer] VDD_LCM (+16V) [51P HS-LVDS input wafer] P600 +3.3V FI-RE51S-HF-J-R1500 1 L/DIM0_SCLK C620 L/DIM0_MOSI 0.1uF 50V G 2 3 C602 0.1uF 50V 6 P602 104060-8017 Q600 2N7002K R600 33 OPT LG1122_RST 7 8 FLASH_WP 9 PWM_BPL 10 +3.
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Revision History ------------------------------------------------------------------------------------------------(0) Proto Design 1.73V 0.53V 1.13V R100 10K R104 1.8K R102 4.7K TP104 TP102 0.09V R106 270 TP106 TP108 SW100 SW102 SW104 SW106 JTP-1127WEM JTP-1127WEM JTP-1127WEM JTP-1127WEM 1 GND 2 KEY2 3 GND 4 TP101 KEY1 TP100 P100 12507WR-04L OPT ZD100 5.6B 1 2 1 2 1 2 1 2 3 4 3 4 3 4 3 4 KEY1 VOL- VOL+ ENTER MENU KEY2 OPT ZD101 5.6B 5 1.
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2 types of LED - Edge Benefit: More Clear More Real Feature Edge Type w/ Local Dimming Edge LED Best picture quality + thin TV Local dimming depicts more Local Dimming deep black. LED Array BLU structure Upper Metal Cover Model LED Array is on the side of Module Local Dimming Copyright © 2012 LG Electronics. Inc. All rights reserved.
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2 types of LED - ALEF Benefit: More Clear More Real Feature ALEF Type Local Dimming ALEF LED` Best picture quality + thin TV Slimmer depth better picture quality Local dimming depicts more Local Dimming deep black. DBEF Prism sheets Diffuser plate BLU structure Light Blocking Pattern Guiding Layer Reflecting coating w/patterns PCB LED Array is on the back of Module Model XXLM960V 47inch : H(6) * V(4) = 24Block 55inch : H(6) * V(4) = 24Block Local Dimming Copyright © 2012 LG Electronics. Inc.
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Main PCB for Broadband XXLM960V-ZB XXLM860V-ZB Main + TCON all in one Local Dim. Woofer Spk 3 4 To PSU 1 1 To FRC BOARD 6 2 wifi Motion assy Copyright © 2012 LG Electronics. Inc. All rights reserved.
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FRC Board for Broadband Main + TCON all in one XXLM960V-ZB From Main Board 1 FRC Processor(LG1122) 2 T-Con IC(LG5812) 1 2 To Pannel ( Left ) Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Block Diagram TS In(CHB) CVBS(CHB) SIF(1 Ch) DTV TS L9A AUD L9D SPIDF_OUT Built-in WiFi BB_TP_DATA Audio L/R (5 Ch) EB_DATA CI Slot Line-Out SCART I2S 16 CHB_DATA 16 CVBS (8 Ch) DDR3 X 3 16 CVBS-Out SCART 8 DAC_DATA eMMC Component (2 Ch) USB2.0x3 HDMI1 HDMI2 HDMI SW HDMI3 HDMI (1 Ch) AAD_DATA RMII PHY Ethernet HDMI4 TXA/B 51Pin LVDS HSR_P/M PC-RGB (WUXGA) Keypad MICOM IR M-Remote_R/TX Motion-R Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Jack Interface COMP_Y+/Pb+/Pr+ AV_CVBS_IN COMP_DET AV_L/R_IN AV_CVBS_DET SPDIF_OUT SPDIF PC_L/R_IN SC_DET PC_Audio HP_L/ROUT Earphone Block SC_CVBS_IN SC_FB/ID_IN 2bit SC_R/G/B 3bit SC_L/R_IN Main Chip EEPROM IC802/ R1EX24002ASAS0A EDID_WP MICOM RGB_DDC_SCL/SDA 2bit DSUB_R/G/B 3bit DSUB_DET DTV/ATV_SELECT RGB DTV/MNT_V_OUT SCART MUX IC2502 ATV_OUT Tuner Copyright © 2012 LG Electronics. Inc. All rights reserved.
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L9 Block diagram Analog Chip DIF ATSC Half NIM GBB AFE 1ch@30MHz w/ PLL SIF Digital Chip 4(val, err, clk, sop) +8 (data) Parallel TS Global Baseband V/Q, DVB-T/C System Demux Video Decoder (Dual HD) AAD (THAT) H.264 Encoder SD upto 480p 10(data)+1(en)+5(gc) BTSC AFE 10b@18.
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L9 Block diagram 30/48 Mhz 2 port USB PHY Clock Divide & Reset generation w/ test logic 30/48Mhz 1 port USB PHY USB controller u_crg CPU 1 Ghz DDR3PLL SSC setting - 0xFD3001D4 - 0xFD3001D8 Clock Divide & Reset generation w/ test logic Memory Controller Clock Divide & Reset generation w/ test logic Memory Controller Clock Divide & Reset generation w/ test logic Memory Controller xi_main xo_main 0 1 SSC setting - 0xFD3001CC - 0xFD3001D0 CT R 0 1 1.6Ghz DDR3PLL1 24Mhz 1.
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Appendix.
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Interconnection – sub PCB( XXLM960V Series ) Speaker cover Assy 5 IR Key PCB RF MOTION ASSY 4 3 SPK unit WIFI ASSY Local Key PCB IR PCB RF MOTION ASSY WIFI ASSY 1 To Main Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Contents of LCD TV Standard Repair Process No.
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Standard Repair Process Error symptom LCD TV A. Video error Established date No video/ Normal audio Revised date 2012.01.16 1/15 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 No video Normal audio Normal audio Y ☞A4 Check Back Light On with naked eye N Move to No video/No audio Y On Check Power Board 24V, 12V,3.5V etc.
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Standard Repair Process LCD TV Error symptom A. Video error Established date No video/ No audio Revised date 2012.01.16 2/15 ☞A4 No Video/ No audio Check various voltages of Power Board ( 3.5V,12V,20V or 24V…) Normal voltage? Y N Check and replace MAIN B/D End Replace Power Board and repair parts 2 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Error symptom LCD TV ☞ A6 Check RF Signal level Normal Signal? Y A. Video error Established date Picture broken/ Freezing Revised date 2012.01.16 3/15 . By using Digital signal level meter . By using Diagnostics menu on OSD ( Setting→ Set up→ Manual Tuning → Check the Signal ) - Signal strength (Normal : over 50%) - Signal Quality (Normal: over 50%) Check whether other equipments have problem or not.
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Standard Repair Process LCD TV Error symptom Established date Color error Revised date 2012.01.16 4/15 ☞ A10 ☞A9 Check color by input -External Input -COMPONENT -RGB -HDMI/DVI A.
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Standard Repair Process LCD TV Error symptom A. Video error Established date Vertical / Horizontal bar, residual image, light spot, external device color error Revised date 2012.01.
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Standard Repair Process LCD TV Error symptom B. Power error Established date No power Revised date ☞A17 Check Power LED 2012.01.16 6/15 ☞A19 DC Power on by pressing Power Key On Remote control Y Power LED On? . Stand-By: Red or Turn Off N . Operating: Turn Off Normal N operation? Check Power On ‘”High” Y OK? Replace Power B/D N Y Check Power cord was inserted properly Replace Main B/D ☞A4 Measure voltage of each output of Power B/D N Normal? Y Close Y ※ Check ST-BY 3.
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Standard Repair Process LCD TV Error symptom B. Power error Established date Off when on, off while viewing, power auto on/off Revised date 2012.01.
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Standard Repair Process LCD TV Error symptom C. Audio error Established date No audio/ Normal video Revised date ☞A24 No audio Screen normal Check user menu > Speaker off 2012.01.16 8/15 ☞A25 N Off Check audio B+ 24V of Power Board Normal voltage Y N Cancel OFF Check Speaker disconnection Y Replace Power Board and repair parts N Disconnection Replace MAIN Board End Y Replace Speaker 8 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process LCD TV Error symptom C. Audio error Established date Wrecked audio/ discontinuation/noise Revised date 2012.01.
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Standard Repair Process LCD TV Established date D. Function error Error symptom Remote control & Local switch checking 2012.01.16 Revised date 10/15 1. Remote control(R/C) operating error ☞A27 Check R/C itself Operation Normal Y operating? ☞A27 Check & Repair Cable connection Connector solder N Normal operating? N Y Check R/C Operating When turn off light in room Check & Replace Baterry of R/C If R/C operate, Explain the customer cause is interference from light in room.
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Standard Repair Process LCD TV Established date D. Function error Error symptom M4 operating checking 2012.01.16 Revised date 11/15 2. M4(Magic Remocon) operating error ☞A7 Check the INSTART menu RF Receiver ver is “00.00”? N Check M4 itself Operation Normal Y operating? Press the wheel N ☞A28 Y Y Check & Replace Batterry of M4 Check & Repair RF assy connection Y Normal operating? ☞A7 RF Receiver ver is “00.
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Standard Repair Process LCD TV Established date D. Function error Error symptom Wifi operating checking 2012.01.16 Revised date 12/15 3.Wifi operating error ☞A7 Check the INSTART menu ☞A29 Wi-Fi Mac value is “NG”? N Check the Wifi wafer (P4301)_1pin Normal Voltage? N Replace Main B/D Y ☞A29 Y Close Check & Repair Wifi cable connection ☞A7 Wi-Fi Mac value is “NG”? N Close Y Change the Wifi assy 12 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process LCD TV Check input signal Error symptom Y Signal input? N D. Function error Established date External device recognition error Revised date Check technical information - Fix information - S/W Version Check and fix external device/cable Technical information? N External Input and Component Recognition error 2012.01.
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Standard Repair Process LCD TV Identify nose type Error symptom E. Noise Established date Circuit noise, mechanical noise Revised date Circuit noise Check location of noise Mechanical noise Check location of noise 2012.01.16 14/15 Replace PSU(with LED driver) OR Replace LED driver ※ When the nose is severe, replace the module (For models with fix information, upgrade the S/W or provide the description) ※ Mechanical noise is a natural phenomenon, and apply the 1st level description.
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Standard Repair Process LCD TV F. Exterior defect Error symptom Zoom part with exterior damage Exterior defect Module damage Replace module Cabinet damage Replace cabinet Remote controller damage Stand dent Established date Revised date 2012.01.16 15/15 Replace remote controller Replace stand 15 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Contents of LCD TV Standard Repair Process Detail Technical Manual No.
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Contents of LCD TV Standard Repair Process Detail Technical Manual Continued from previous page No. Error symptom 16 17 B. Power error_ No power 18 19 20 22 B. Power error_Off when on, off while viewing C. Audio error_ No audio/Normal video 22 23 D. Function error 24 Copyright © 2012 LG Electronics. Inc. All rights reserved. Only for training and service purposes Content Page Check front display LED A17 Check power input Voltage & ST-BY 3.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_No video/Normal audio Content Check LCD back light with naked eye Established date Revised date 2011. 12 .14 A1 After turning on the power and disassembling the case, check with the naked eye, whether you can see light from 2 locations. A1 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_No video/Normal audio Content LED driver B+ 24V measuring method Established date Revised date 2011. 12 .14 A2 Check the DC 24V and Inverter on ALEF LED 14 Pin (Power Board ↔ Driver) PSU 1~5 24V 6 ~ 10 GND 11 Detect 12 Inverter On/Off 13 Int. PWM 14 Ext. PWM (PDIM) A2 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_No video/Normal audio Content Check White Balance value Established 2011. 12 .14 date Revised date A3 Entry method method Entry 1. 1. Press Press the the ADJ ADJ button button on on the the remote remote controller controller for for adjustment. adjustment. 2. Enter into into White White Balance Balance of of item item 10. 6. 2. Enter 3. 3.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_No video/ Audio Content Power Board voltage measuring method ALEF LED Established 2011. 12 .14 date Revised date A4 Check the DC 24V, 12V, 3.5V. 24 Pin (Power Board ↔ Main Board) - 공통 SMAW200-H24S (YEONHO) 1 Power on 2 20V (24V) 3 20V (24V) 4 20V (24V) 5 GND 6 GND 7 GND 8 GND 9 3.5V 10 3.5V 11 3.5V 12 3.5V 13 GND 14 GND 15 GND 16 N.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Video error, video lag/stop Content TUNER input signal strength checking method Established 2011. 12 .14 date Revised date A6 Settings Æ Set up Æ Manual Tuning Æ select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) A6 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Video error, video lag/stop Content LCD-TV Version checking method Established 2011. 12 .14 date Revised date A7 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment A7 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Video error, video lag/stop Content TUNER checking part Established 2011. 12 .14 date Revised date A8 Checking method: 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. A8 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error _Vertical/Horizontal bar, residual image, light spot Content LCD TV connection diagram (1) Established 2011. 12 .14 date Revised date A9 As the part connecting to the external input, check the screen condition by signal A9 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Color error Content Check Link Cable (LVDS) reconnection condition Established 2011. 12 .14 date Revised date A10 Check the contact condition of the Link Cable, especially dust or mis insertion. A10 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Color error Content Adjustment Test pattern - ADJ Key Established 2011. 12 .14 date Revised date A12 You can view 6 types of patterns using the ADJ Key Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D!) A12 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Appendix : Exchange T-Con Board (1) Solder defect, CNT Broken Solder defect, CNT Broken Solder defect, CNT Broken Solder defect, CNT Broken T-Con T-Con Defect, Defect, CNT CNT Broken Broken Solder defect,CNT CNTBroken Broken T-Con Defect, Abnormal Power Section Solder defect, Short/Crack Abnormal Power Section Solder defect, Short/Crack A - 1/5 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Appendix : Exchange T-Con Board (2) Abnormal Power Section Solder defect, Short/Crack GRADATION Abnormal Power Section Solder defect, Short/Crack Fuse Open, Abnormal power section Abnormal Display Noise GRADATION A - 2/5 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Appendix : Exchange the Module (1) Panel Mura, Light leakage Crosstalk Panel Mura, Light leakage Press damage Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Press damage A - 4/5 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Appendix : Exchange the Module (2) Vertical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Vertical Line Source TAB IC Defect Horizontal Gate TAB ICBlock Defect Gate TAB IC Defect Vertical Block Source TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect A - 5/5 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom B. Power error _No power Content Check front display LED Established 2011. 12 .14 date Revised date A17 Front LED control : Menu Æ Option Æ Standby Light Æ ON/ Off ST-BY condition: Red or Turn Off Power ON condition: Turn Off A17 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom B. Power error _No power Content Check power input voltage and ST-BY 3.5V Established 2011. 12 .14 date Revised date A18 Check the DC 24V, 12V, 3.5V. ALEF LED 24 Pin (Power Board ↔ Main Board) - 공통 SMAW200-H24S (YEONHO) 1 Power on 2 20V (24V) 3 20V (24V) 4 20V (24V) 5 GND 6 GND 7 GND 8 GND 9 3.5V 10 3.5V 11 3.5V 12 3.5V 13 GND 14 GND 15 GND 16 N.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom Content Established 2011. 12 .14 date Revised date B. Power error _No power Checking method when power is ON A19 Check “power on” pin is high ALEF LED 24 Pin (Power Board ↔ Main Board) - 공통 SMAW200-H24S (YEONHO) 1 Power on 2 20V (24V) 3 20V (24V) 4 20V (24V) 5 GND 6 GND 7 GND 8 GND 9 3.5V 10 3.5V 11 3.5V 12 3.5V 13 GND 14 GND 15 GND 16 N.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom B. Power error _Off when on, off whiling viewing Established 2011. 12 .14 date Content POWER OFF MODE checking method Revised date A22 Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 A22 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom C. Audio error_No audio/Normal video Content Checking method in menu when there is no audio Established 2011. 12 .14 date Revised date A24 Checking method 1. Press the Setting button on the remote controller 2. Select the Sound function of the Menu 3. Select the Sound Setting 4. Select TV Speaker from Off to On A24 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom C. Audio error_No audio/Normal video Content Voltage and speaker checking method when there is no audio Established date Revised date 2011. 12 .14 A25 ALEF LED 24 Pin (Power Board ↔ Main Board) Power on 24V 1 2 ② 24V 24V 3 4 GND GND 5 6 GND GND 7 8 ② 3.5V 3.5V 9 10 3.5V 3.5V 11 12 GND 13 GND 14 V-sync 15 GND 16 17 12V 18 Inverter On/off N.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom D. Function error Content Remote controller operation checking method Established 2011. 12 .14 date Revised date A27 ③ ④ 1 2 3 4 5 6 7 8 9 10 P4102 SCL SDA GND KEY1 KEY2 St 3.5V GND GP4_LED_R IR GND ② ① Checking order 1, 2. Check IR cable condition between IR & Main board. 3. Check the st-by 3.3V on the terminal 6. 4.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom Content D. Function error Motion Remote operation checking method Established 2011. 12 .14 date Revised date A28 ③ 1 2 3 4 5 6 7 8 P4800 3.3V GND RX TX RESET DC DD GND ① ② Checking order 1, 2. Check Motion cable condition between Motion assy & Main board. 3. Check the 3.3V on the terminal 1. A28 Copyright © 2012 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual Error symptom LCD TV Content D. Function error Wifi operation checking method Established 2011. 12 .14 date Revised date A29 ③ ① 1 2 3 P4301 VDD DM DP 4 GND ② Checking order 1, 2. Check Wifi cable condition between Wifi assy & Main board. 3. Check the 5V on the terminal 1. A29 Copyright © 2012 LG Electronics. Inc. All rights reserved.