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LG 47SL90QD Service Manual
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LG 47SL90QD Service Manual

LG 47SL90QD Service Manual

Chassis : lj91l
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LCD TV
SERVICE MANUAL
CHASSIS : LJ91L
MODEL : 47SL90QD
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL61862417 (0911-REV01)
North/Latin America
Europe/Africa
Asia/Oceania
47SL90QD-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 LG 47SL90QD

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LJ91L MODEL : 47SL90QD 47SL90QD-SA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL61862417 (0911-REV01) Printed in Korea...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 EXPLODED VIEW .................. 17 SVC. SHEET ....................Copyright LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Product Safety

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 14. 1920*1080 33.71 29.97 74.176 HDTV 1080P 15. 1920*1080 56.25 50.000 148.5 HDTV 1080P 16. 1920*1080 28.125 25.000 74.25 HDTV 1080P Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 - Min Horiz. Freq - 30 kHz - Max Horiz. Freq - 80 kHz - Pixel Clock - 170 MHz Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 RF : 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 30, 51, 63 CATV : 15, 16, 17 Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    (Display Data Channel) download • Color Temperature (White Balance) Adjustment • Make sure RS-232C control • Selection Factory output option Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 4.3. << 10P WAFER >> PIN MAP Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 - xb 00 60: Change to RGB-PC mode(No action) - ad 00 10: Adjust 1080p RGB - ad 00 90: End of the adjustment Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 • RGB 1080p adjustment in RGB input mode • If you success RGB 1080p Adjust. You can see “ADC RGB-DTV Success” Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 => It will operate in the DOS mode. Pic.3) For write EDID data, setting Jig and another instruments. • EDID data for LJ91D Chassis (Model name = LG TV) - Analog (RGB) EDID table (0x9B, 0x25) - HDMI-1 EDID table (0x3D, 0x2C) See Workig Guide of you want more information about EDID communication.
  • Page 15 * If it needs, offset adjustment (wb 00 20-start, wb 00 2f-end) • "wb 00 ff": End of white balance adjustment (inner pattern disappear) Copyright LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 5) Remove your hand from the EYE Q II sensor and wait for 6 sencond 6) Confirm that “OK” pop up. If change is not seen, replace EYE Q II sensor Copyright LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...

  • Page 17: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. -17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 D3.3V SIDE AV R,G,B PC&DDC COMPONENT1 R1118 +5V_ST COMP1_DET 3:T21 C1101 D1103 100pF ENKMC2838-T112 FIX-TER D3.3V L1101 R1134 CM2012FR27KT R1123 2.7K 3:T21 R1137 SIDE_CVBS_DET COMP1_Y_IN C1130 3:T19 0.1uF 27pF 27pF C1103 IC1103 C1116 C1151 P1101 C1153 M24C02-RMN6T C1142 0.1uF 12507WS-08L 4700pF 0.1uF R1159...
  • Page 19 * HDMI CEC +1.8V_HDMI D3.3V +3.3V_HDMI +3.3V_ST +1.8V_AMP L601 L602 BLM18PG121SN1D Q16;AH18 BLM18PG121SN1D JACK_GND 5V_HDMI_4 R666 C623 C629 R641 Q601 0.1uF 0.1uF AH19 SSM6N15FU HPD4 12:F6 DRAIN1 SOURCE1 +5V_POWER HDMI_CEC CEC_REMOTE R642 R14;AG19 R658 DDC/CEC_GND DDC_SDA_4 H8;H17;R26;AL11 GATE2 GATE1 R13;AG19 DDC_SCL_4 R639 SOURCE2...
  • Page 20 IC503 AZ1117H-1.8TRE1(EH13A) +1.8V_AMP D3.3V INPUT ADJ/GND OUTPUT C548 C549 10uF 0.1uF C551 C552 0.1uF 10uF +24V +24V_AMP L511 MLB-201209-0120P-N2 SPK_L+ +24V_AMP D501 R518 C544 L504 1N4148W 0.01uF 100V DA-8580 R511 R523 T_330uF_Capacitor C540 EAP38319001 R527 C531 0.1uF 1000pF 4.7K C538 SPEAKER_L 0.47uF C515...
  • Page 21 * FROM LIPS & POWER B/D -->Apply changed Pin Map +12V +3.3V_ST +5V_ST L806 MLB-201209-0120P-N2 L822 D3.3V R873 R859 MLB-201209-0120P-N2 +3.3V_MEMC Q805 3.3K 330K C873 R823 L829 +12V C820 R820 1/10W MLB-201209-0120P-N2 R817 R829 15pF IC809 P801 RT1P141C-T112 D803 SC2621ASTRT A3.3V FM20020-24 R828...
  • Page 22 D1.8V D1.8V A1.2V IC100 BCM3556 0.1uF C345 DDR0_VREF0 DDR1_VREF0 DDR_BVDD0 0.1uF C346 DDR_BVDD1 Qimonda Qimonda DDR_BVSS0 DDR_BVSS1 IC300 IC301 DDR_PLL_TEST HYB18TC1G160C2F-1.9 DDR1_DQ[0-15] R312 HYB18TC1G160C2F-1.9 R301 DDR_PLL_LDO C300 C301 C321 C322 DDR0_DQ[0-15] DDR01_CKE E5;H5;I2 DDR01_CKE R313 470pF 0.1uF 470pF 0.1uF DDR_COMP B6;H6;H2;B5 VREF DDR0_DQ[0]...
  • Page 23 R929 * XTAL X901 M_XTALO M_XTALI 12MHz C946 C947 22pF 22pF R917 R923 +3.3V_MEMC 12V_TCON R918 R924 +3.3V_MEMC R919 R925 +1.26V_MEMC R920 R926 P903 TF05-51S +3.3V_MEMC R921 R927 BLM18PG121SN1D 22uF/16 CST PROBLEM R922 R928 URSA_B4M URSA_B4P URSA_B3M PI Result URSA_B3P R931 URSA_BCKM URSA_BCKP...
  • Page 24 DDR2 1.8V By CAP - Place these Caps near Memory +1.8V_MEMC +1.8V_FRC_DDR +1.8V_FRC_DDR +1.8V_FRC_DDR BLM18PG121SN1D L1002 PI Result +1.8V_FRC_DDR +1.8V_FRC_DDR URSA_DQ[0-31] AR1018 DDR_DQ[15] URSA_DQ[15] 7:G1;AM22 URSA_DQ[0-31] DDR_DQ[8] URSA_DQ[8] 7:G1;C22 AR1004 DDR_DQ[10] URSA_DQ[10] URSA_DQ[27] DDR_DQ[27] DDR_DQ[13] URSA_DQ[13] URSA_DQ[28] DDR_DQ[28] IC1001 IC1002 URSA_DQ[25] DDR_DQ[25] AR1017...
  • Page 25 RESET Hot Plug input pin should be feeded over 5mA. BCM Recommend IC100 D3.3V BCM3556 P100 D3.3V D3.3V GIL-G-06-S3T2 R2003 EBI_ADDR3 GPIO_00 R2025 TUNER_RESETb EBI_ADDR4 GPIO_01 I3;14:A6 POWER_DET 12:B3;12:I4 EBI_ADDR2 GPIO_02 IC400 R199 EBI_ADDR1 GPIO_03 KIA7029AF R2001 BCM_AVC_DEBUG_TX1 EBI_ADDR0 GPIO_04 R2002 R408 EBI_ADDR5...
  • Page 26 When usding FUNDMENTAl then series R = 0 ohm and CL = 8 pF IC100 54MHz X-TAL When usding Dip-type X-tal then series R = 22 ohm and CL = 12 pF BCM3556 TU_SCLK PKT0_CLK LVDS_TX_0_DATA0_P 7:D7 LVDS_TX_1_DATA4_N TU_SDATA PKT0_DATA LVDS_TX_0_DATA0_N LVDS_TX_1_DATA4_P 7:D7...
  • Page 27 IC100 BCM3556 AG28 AE18 R162 DS_AGCI_CTL I2S_CLK_IN AH28 AF18 DS_AGCT_CTL I2S_CLK_OUT BCM_I2S_BIT_CLK 3:D3 AA21 AD17 R163 EDSAFE_AVSS_1 I2S_DATA_IN AB22 AH19 A2.5V BCM_I2S_DATA_OUT EDSAFE_AVSS_2 I2S_DATA_OUT 3:D3 AF26 AD18 R164 EDSAFE_AVSS_3 I2S_LR_IN AF27 AG18 A1.2V EDSAFE_AVSS_4 I2S_LR_OUT BCM_I2S_WORD_CLK 3:D3 BLM18PG121SN1D AF28 AG26 R165 A2.5V L102...
  • Page 28 +3.3V_ST D3.3V R454 R451 +3.3V_ST +3.3V_ST IC402 +3.3V_ST R489 +3.3V_ST KIA7029AF C410 C411 C407 Q401 0.1uF 100uF 2SC3875S(ALY) C402 C403 0.1uF 0.1uF +3.3V_ST R430 HSYNC/P1.5 P5.4 R465 PANEL_CTL 4:H1 VSYNC/P1.6 P5.5 M5V_ON FLASH_WP_1 4:C5 R403 P1.7/SOGI P5.6 R468 R416 INV_ON/OFF 4:C5 +3.3V_ST P5.7/CLKO2...
  • Page 29 D1.2V C243 C249 C250 C251 C252 C253 C254 C286 C287 0.1uF 4.7uF 1000pF 0.01uF 0.1uF 10uF 10uF 33uF 33uF IC100 BCM3556 D1.2V D1.2V IC100 BCM3556 DVSS_1 DVSS_62 DVSS_2 DVSS_63 DVSS_3 DVSS_64 DVSS_4 DVSS_65 VDDC_1 C244 C246 C256 C258 C259 C262 C265 C266 C288...
  • Page 30 CONTROL IR & LED USB JACK & USB +5V Current Protection D3.3V +5V_ST +5.0V BCM Tolerance P701 R718 R721 IC701 USB_POWER_OUT_2 2.7K 12507WS-12L 2.7K L709 MIC2009YM6-TR USB_5VST L710 USB_+5V VOUT UCOM_SCL_3.3V 12:F6 C716 ILIMIT 0.1uF UCOM_SDA_3.3V 12:F6 C705 C707 FAULT/ ENABLE D701 1000pF...
  • Page 31 D3.3V TU_+5.0V C5005-*1 0.1uF RF_SWITCH LGIT RF_SWITCH 3:T24 RF-GAIN_SW C5005 R5014 2200pF C5002 GAIN_SWITCH B0[+5V] 0.1uF GAIN_SWITCH 3:T24 TU_+5.0V 22uF TU101 R5013 R50010 LGIT C5000 LGIT VA1G5BF8005 LGIT C5007 2200pF L5005 RF_AGC R50020 LGIT LGIT B1[+5V] RF_SW C5016 C5012 C5014 NC_1 GAIN_SW TU102...
  • Page 33 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset IC Reset Switch MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 34 22 ohm RS232C_RxD 100 ohm MAX3232 100 ohm RS232C_TxD D3.3V 22 ohm 100 ohm SCL2 MST7323 SDA2 22 ohm 100 ohm Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 0x54 0x54 BCM3556 BCM3556 CH2 (+3.3V) EEPROM Micom Micom EEPROM MTV416 AT24C512 AT24C512 MTV416 0x50 0xA6 0xA6 0x50 (+3.3V) MST7323 MST7323 Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 SCL0_3.3V, SDA0_3.3V, DDC_SCL, DDC_SDA Board Board Jack Jack CVBS, SIF, AV, RGB ,COMPONENT, R/L, Board Board TU_SCLK, TU_DATA, TU_SYNK’’.. < Signal Interface > Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset IC Reset Switch MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 38 Check X903 Clock 54MHz Replace X903 Check signal transition Maybe BCM3556 has troubles at IC101 #9 pin Replace IC101 Flash Memory Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset IC Reset Switch MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 40 Check P903 Maybe BCM3556(IC100) or 7329A(IC901) #16(TXAC-), #17(TXAC+), #32(TXBC-), #33(TXBC+) has troubles Check LVDS Cable Replace Cable Check Voltage LCD Module Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 42 Check cable between P203 at Jack Maybe Cable Pin has problems Board and P701 at Main Baord Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 44 Check CVBS Signal Replace one of R703 and C110 R703 and C110 at Main Baord & Recheck Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 46 Board and P701 at Main Baord Check Component Signal C130, C131, C132 Replace it C133, C134. C135 Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 48 Board and P701 at Main Board Check RGB Signal Replace it C127, C128, C129 at Main Board Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 50 Maybe Cable Pin has problems Board and P701 at Main Board Check AV Signal Replace it C124, C125 at Main Board Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 52 Check IC601 Voltage Level Replace one of +1.8V_HDMI, +5.0V_HDMI L601/L602/R619/R615 Check I2C Signal Replace It & Recheck R624/R625/R157/R158 Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset IC Reset Switch MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 54 Replace It L511, L503, L501 & Recheck Check BCM3556 I2S Output Replace It & Recheck R505, R506, R507 Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 56 Check video output trouble shooting Follow procedure All source audio Maybe BCM3556 internal audio trouble shooting DSP has problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 57 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 58 R704 and C106 at Main Board & Recheck Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 60 R233/R234/C226/C227 (RGB) & Recheck at Main Board Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 61 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 62 Re-download EDID data Replace IC601 Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems. Replace it Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 63 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 64 - USB power could be disabled by inrushing current - In this case, remove the device and try to reboot the TV (AC power off/on) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 65 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 66 Check P705 Replace Jack Replace one of Check Signal R3022, R3023 R3022, R3023 & Recheck Maybe BCM3556(IC100) has problems. Replace It. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 67 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 68 15. Digital TV Recording Fail Trouble Shooting Follow procedure digital TV Check video/audio output video/audio trouble shooting Follow procedure USB trouble Check USB shooting Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 69 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 70 Follow procedure USB trouble Check USB shooting Follow procedure OSD trouble Check Watch shooting Check HDD (User) Replace Jack Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 71 DP2/DM2 USB_DP2 SCL, SDA_3.3V NVRAM O.C. Protector Reset Switch Reset IC MICOM SCL, SDA_3.3V X-tal (MTV416GMF) 24MHz 54MHz CLK,TDI,TDO,MS,RST Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. X-tal JTAG LGE Internal Use Only Only for training and service purposes...
  • Page 72 (watch & record) Follow procedure All source audio Maybe BCM3556 internal audio trouble shooting DSP has problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

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