LG 42LK530 Service Manual Download Page 62

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11. Trouble shooting - No audio (AV)

Check AV Cable for damage

or open conductor

Check Audio OSD

(Audio OSD active or inactive mode?)

No (Inactive)

Check R821 & R822, JK803

Check Audio AMP Mute (pin19)

Replace JK1105

Check Audio Master clock // AUD_LRCH

AUD_LRCK, AUD_SCK(AMP pin20,21,22)

Replace LGE35230

Check JK1105

Check Audio AMP voltage

+3.3V,+24V_AMP

Check output L1703,4,7,8

AMP output

Replace Audio AMP TAS5727

Follow procedure & refer to Audio signal block

Diagram

LGE Internal Use Only

Summary of Contents for 42LK530

Page 1: ...READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LT03B MODEL 42LK530 42LK530 UC North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL66980414 1101 REV00 ...

Page 2: ...nal Use Only Copyright LG Electronics Inc All right reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 10 EXPLODED VIEW 19 SVC SHEET ...

Page 3: ...perate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals p...

Page 4: ...n your body by touching a known earth ground 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 unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge b...

Page 5: ...e solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced...

Page 6: ...ICATION NOTE Specifications and others are subject to change without notice for improvement 4 General Specification TV No Item Specification Remark 1 Receivable System 1 ATSC NTSC M 2 Available Channel 1 VHF 02 13 2 UHF 14 69 3 DTV 02 69 4 CATV 01 135 5 CADTV 01 135 3 Input Voltage 1 AC 100 240V 50 60Hz Mark 110V 60Hz N Ame 4 Market North America 5 Screen Size 42 inch Wide 1920x1080 FHD 60Hz 42LV3...

Page 7: ...700 UD D B T X D E R D B T Y D B T X N E E R G D B T Y D B T X E U L B D B T Y 9 7 2 0 X E T I H W Color coordinate 47 Edge LED Y Typ 0 03 0 292 Typ 0 03 47LV3700 UD D B T X D E R D B T Y D B T X N E E R G 3 Color coordinate 55 Edge LED Y Typ 0 03 TBD Typ 0 03 55LV3700 UD D B T X E U L B D B T Y 9 7 2 0 X E T I H W 2 9 2 0 Y 5 3 6 0 X RED 3 2 3 0 Y 8 8 2 0 X GREEN 0 0 6 0 Y 8 4 1 0 X BLUE 0 5 0 0 ...

Page 8: ...550 UA CMI 1100 1 1500 1 42LK530 UC 1100 1 1450 1 47LK530 UC Contrast ratio Module 1100 1 1450 1 55LK530 UC 40 000 50 000 42LV3700 UD 40 000 50 000 47LV3700 UD 40 000 50 000 55LV3700 UD 5 Contrast ratio DCR 40 000 50 000 42 47LK550 UA 42 47 55LK530 UC COOL 0 254 0 258 0 269 0 273 0 284 0 288 13000K MEDIUM 0 270 0 278 0 285 0 293 0 300 0 308 9300K 6 Color Temperature WARM 0 298 0 314 0 313 0 329 0 ...

Page 9: ...25 HDTV 1080I 8 1920 1080 33 72 59 94 74 176 HDTV 1080I 9 1920 1080 67 500 60 148 50 HDTV 1080P 10 1920 1080 67 432 59 94 148 352 HDTV 1080P 11 1920 1080 27 000 24 000 74 25 HDTV 1080P 12 1920 1080 26 97 23 976 74 176 HDTV 1080P 13 1920 1080 33 75 30 000 74 25 HDTV 1080P 14 1920 1080 33 71 29 97 740176 HDTV 1080P 7 RGB Input PC No Resolution H freq kHz V freq kHz Pixel clock Proposed PC DDC 1 640 ...

Page 10: ...7 712 60 015 85 50 VESA WXGA O 8 1280 1024 63 981 60 020 108 00 VESA SXGA O 9 1920 1080 67 500 60 000 148 50 HDTV 1080P O DTV 1 720 480 31 47 60 27 027 SDTV 480P O 2 720 480 31 47 59 94 27 00 SDTV 480P O 3 1280 720 45 00 60 00 74 25 HDTV 720P O 4 1280 720 44 96 59 94 74 176 HDTV 720P O 5 1920 1080 33 75 60 00 74 25 HDTV 1080I O 6 1920 1080 33 72 59 94 74 176 HDTV 1080I O 7 1920 1080 67 500 60 148 ...

Page 11: ... case of keeping module is in the circumstance of below 20 C it should be placed in the circumstance of above 15 C for 3 hours Caution When still image is displayed for a period of 20 minutes or longer especially where W B scale is strong Digital pattern 13ch and or Cross hatch pattern 09ch there can some afterimage in the black level area 3 Adjustment items 3 1 Main PCBA Adjustments EDID download...

Page 12: ...rea Mexico models DETECT MAC_WRITE WIDEVINE_WRITE 4 Play START 5 Check of result Ready Test OK or NG 6 Printer out MAC Address Label 4 1 4 Communication Port connection 1 Connect PCBA Jig RS 232C Port PC RS 232C Port 4 1 5 Download 1 US Canada models 11Y LCD TV MAC Widevine ESN Key 2 Korea Mexico models 11Y LCD TV MAC Widevine Only 4 1 6 Inspection In INSTART menu check these keys 4 2 LAN port Ins...

Page 13: ... 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 01 15 01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 71 40 81 C0 81 00 81 80 95 00 30 90 40 A9 C0 B3 00 02 3A 80 18 71 38 2D 40 58 2C 40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30 50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 39 60 3F 1F 52 10 00 0A 20 20 20 20 20 20 00 00 00 FC 70 00 4C 47 20 54 56 0A 20 ...

Page 14: ...52 10 00 0A 20 20 20 20 20 20 00 00 00 FC 70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 7F 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 02 03 1F F1 48 10 22 20 05 84 03 02 01 26 15 07 10 50 09 07 07 67 03 0C 00 20 00 B8 2D E3 05 03 01 20 02 3A 80 18 71 38 2D 40 58 2C 04 05 A0 5A 00 00 30 00 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 A0 5A 40 00 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00 50 A0 5A 00 00 00 1E ...

Page 15: ...CG CH 9 WCG CH12 LED CH14 2 Adj Computer During auto adj RS 232C protocol is needed 3 Adjust Remocon 4 Video Signal Generator MSPG 925F 720p 216 Gray Model 217 Pattern 78 Only when internal pattern is not available 5 1 3 Equipment connection 5 1 4 Adjustment Command Protocol 1 RS 232C Command used during auto adj 2 Adjustment Map 5 1 5 Adjustment method Auto adj method 1 Set TV in adj mode using P...

Page 16: ...ta on the screen and check whether the value is lower thanafter 6 seconds the value does not go below 10 Eye Q sensor is not working properly Then change the sensor Step 5 Remove hand from the Eye Q II sensor and stay for 6 seconds Step 6 Check whether the Back Light xxx value has risen on the screen If after 6 seconds and the value still does not go high the eye Q II sensor is not working properl...

Page 17: ...B PC 1KHz sine wave signal 0 7Vrms 7 2 Specification 8 GND and Hi pot Test 8 1 Method 8 1 1 GND HI POT auto check preparation 1 Check the POWER CABLE and SIGNAL CABE insertion condition 8 1 2 GND HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GWS103 4 on 4 GND Test Auto If Test is failed Buzzer operates If Test is pa...

Page 18: ...ndition in surrounding area surrounding lighting should be lower 10 lux Try to isolate adj area into dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10cm and perpendicular of the module surface 80 100 3 Aging time 1 After Aging Start Keep the Power ON status during 5 Minutes 2 In case of LCD Back light on should be checked using no signal or Full white pattern 10 1 2...

Page 19: ...nd 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 Do not modify the original design without permission of manufacturer IMPOR...

Page 20: ...01 HDMI0_CLKN B5 HDMI0_CLKP C5 HDMI0_D0N A4 HDMI0_D0P B4 HDMI0_D1N A3 HDMI0_D1P B3 HDMI0_D2N A2 HDMI0_D2P B2 CEC W2 DDC0_SCL V4 DDC0_SDA W4 HDMI0_HTPLG_IN V3 HDMI0_HTPLG_OUT V2 HDMI0_ARC D13 HDMI0_RESREF E6 TXOUT0_L0N AE27 TXOUT0_L0P AE28 TXOUT0_L1N AF27 TXOUT0_L1P AF28 TXOUT0_L2N AG27 TXOUT0_L2P AG28 TXCLK_LN AE26 TXCLK_LP AF26 TXOUT0_L3N AH27 TXOUT0_L3P AG26 TXOUT0_L4N AF25 TXOUT0_L4P AE25 TXOUT...

Page 21: ...TD_3 GPIO J3 TDATD_4 GPIO K2 TDATD_5 GPIO K1 TDATD_6 GPIO K3 TDATD_7 GPIO L1 TSTRTD GPIO L3 TVLDD GPIO L2 MPEG_CLK GPIO P4 MPEG_D_0 GPIO T2 MPEG_D_1 GPIO R3 MPEG_D_2 GPIO R2 MPEG_D_3 GPIO P3 MPEG_D_4 GPIO P2 MPEG_D_5 GPIO P1 MPEG_D_6 GPIO R6 MPEG_D_7 GPIO N5 MPEG_SYNC GPIO T4 MPEG_DATA_EN GPIO P5 MCIF_RESET GPIO R4 MCIF_SCLK GPIO U1 MCIF_SCTL GPIO T3 MCIF_SDI GPIO T1 MCIF_SDO GPIO T5 VI_IFP0 C17 V...

Page 22: ... VI_PB1 B9 VI_INCM_COMP1 B8 VI_SC_R1 C11 VI_SC_G1 A10 VI_SC_B1 B10 VI_INCM_SC1 C10 VI_FB_1 GPIO D10 VI_FS1 F13 VI_SC_R2 A12 VI_SC_G2 C12 VI_SC_B2 B12 VI_INCM_SC2 B11 VI_FB_2 GPIO E12 VI_FS2 E14 VI_L1 E15 VI_C1_1 F17 VI_INCM_LC1_1 E16 VI_C1_2 F14 VI_INCM_LC1_2 E11 VI_CVBS1 C18 VI_INCM_CVBS1 B18 VI_CVBS2 A18 VI_INCM_CVBS2 C19 VI_CVBS3 A19 VI_INCM_CVBS3 B19 VI_CVBS4 C20 VI_INCM_CVBS4 B20 VI_SIF1_1 E1...

Page 23: ...7 F1 VDDQ_8 H2 VDDQ_9 H9 NC_1 J1 NC_2 J9 NC_3 L1 NC_4 L9 NC_6 T7 VSS_1 A9 VSS_2 B3 VSS_3 E1 VSS_4 G8 VSS_5 J2 VSS_6 J8 VSS_7 M1 VSS_8 M9 VSS_9 P1 VSS_10 P9 VSS_11 T1 VSS_12 T9 VSSQ_1 B1 VSSQ_2 B9 VSSQ_3 D1 VSSQ_4 D8 VSSQ_5 E2 VSSQ_6 E8 VSSQ_7 F9 VSSQ_8 G1 VSSQ_9 G9 DDR_AA13 1 5V_DDR R401 4 7K DDR_1333 DDR_AA11 DDR_AA1 DDR_QS2 C452 0 1uF DDR_QS3 DDR_CKE DDR_BAA1 DDR_QS0 1 5V_DDR R403 4 7K DDR_AA12 ...

Page 24: ...F 16V R640 10K R623 10K PWM_LED FLMD0 EEPROM_SDA HDMI_CEC SDA2_3 3V R630 22 WIRELESS_DET NEC_ISP_Rx IC602 uPD78F0514 NEC_MICOM 1 P60 SCL0 2 P61 SDA0 3 P62 EXSCL0 4 P63 5 P33 TI51 TO51 INTP4 6 P75 7 P74 8 P73 KR3 9 P72 KR2 10 P71 KR1 11 P70 KR0 12 P32 INTP3 OCD1B 13 P31 INTP2 OCD1A 14 P30 INTP1 15 P17 TI50 TO50 16 P16 TOH1 INTP5 17 P15 TOH0 18 P14 RXD6 19 P13 TXD6 20 P12 SO10 21 P11 SL10 RXD0 22 P1...

Page 25: ... R917 47K COMMERCIAL D904 5 6V CDS3C05HDMI1 R929 1 5K R928 1 5K IR_PASS Q905 2SC3052 COMMERCIAL E B C D906 5 6V CDS3C05HDMI1 R933 100 R908 47K Q904 2SC3052 WIRELESS E B C R919 10K 1 D901 5 6V AMOTECH R918 47K WIRELESS L902 BLM18PG121SN1D 3 3V_Normal D907 5 6V AMOTECH R912 47K WIRELESS R921 47K COMMERCIAL P901 12507WR 15L IR_15P 1 EEPROM_SCL 2 EEPROM_SDA 3 GND 4 KEY1 5 KEY2 6 3 5V 7 GND 8 LED_B LOG...

Page 26: ... JK1001 KJA PH 3 0168 WIRELESS 14 GND_3 13 I2C_SDA 5 VCC 24V 20V 17V _1 12 I2C_SCL 11 GND_2 2 VCC 24V 20V 17V _2 19 GND_5 18 IR 10 RESET 4 VCC 24V 20V 17V _4 1 VCC 24V 20V 17V _1 17 GND_4 9 GND_1 8 INTERRUPT 3 VCC 24V 20V 17V _3 16 UART_TX 7 DETECT 6 VCC 24V 20V 17V _1 15 UART_RX 20 GND_6 21 SHIELD WIRELESS_SDA D1002 5 6V CDS3C05HDMI1 WIRELESS WIRELESS_SCL R1002 22K WIRELESS C1002 2 2uF WIRELESS R...

Page 27: ...6C RD1 E LUG R1120 0 COMP2 ZD1107 5 1V COMP2 R1118 75 AV2 D1108 5 6V ZD1110 5 1V 3 3V_Normal R1136 10 ZD1114 5 1V D1101 5 6V C1108 560pF 50V C1114 560pF 50V COMP2 C1109 560pF 50V AV1_CVBS_IN SC_G COMP2_Y R1129 1K AV2 R1126 75 COMP2 AV1_R_IN D1112 5 6V COMP2 AV2_L_IN R1111 470K ZD1112 5 1V R1110 470K D1105 5 6V R1123 470K COMP2 R1127 2 7K COMP2 R1125 75 COMP2 COMP1_DET SC COMP2_L_IN R1122 470K COMP...

Page 28: ... JK1202 3AU04S 305 ZC LG 1 2 3 4 5 R1222 2 7K SIDE_USB_DM USB_DM1 C1212 1uF 10V WIFI R1223 2 7K USB_OCD1 C1208 0 1uF WIFI USB_CTL2 D1205 5 6V CDS3C05HDMI1 USB_OCD2 C1214 0 1uF WIFI R1214 100K OPT USB_CTL2 R1227 0 NON_WIFI C1224 0 1uF SIDE_USB_OCD1 USB_CTL1 R1206 100K WIFI USB_DP1 C1204 1uF 10V WIFI WIFI_DM R1226 0 NON_WIFI 5V_USB SIDE_USB_DM USB_DP1 L1203 BLM18PG121SN1D WIFI R1221 4 7K OPT 3 3V_US...

Page 29: ...V_Normal TXB3N R1504 33 FRC2 P1502 FI RE41S HFK A LVDS_41P 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 TXA0N TXD2N R1512 10K BIT_SEL_LOW TXB0N TXC0P TXACLKN TXD0N C1501 10uF 25V OPT TXC1P TXC3N TXB1P TXC2P TXC0N TXBCLKP TXC4N TXCCLKP TXA1P TXD1P TXDCLKN SDA2_3 3V TXCCLKN TXBCLKN R1507 33 FRC2 TXD0P TXB4N TXB2P TXC4P TXD4P TXA...

Page 30: ...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 SCL2_3 3V R1602 33 SDA2_3 3V R1601 33 L DIM0_MOSI L DIM0_SCLK L DIM0_VS P1601 12507WR 08L 1 2 3 4 5 6 7 8 9 50 BCM35230 16 L_DIMMING Local Dimming Block ...

Page 31: ...M_MDI 7 PCM_MDI 5 CI_ADDR 7 PCM_MDI 0 CI_ADDR 11 CI_ADDR 9 CI_ADDR 13 PCM_TS_DATA 3 PCM_TS_DATA 0 PCM_MDI 2 PCM_MDI 6 CI_ADDR 5 PCM_TS_DATA 1 CI_ADDR 14 PCM_MDI 4 CI_ADDR 4 PCM_MDI 3 PCM_TS_DATA 6 CI_ADDR 8 CI_ADDR 12 CI_ADDR 6 PCM_TS_DATA 5 PCM_TS_DATA 2 CI_ADDR 2 PCM_MDI 1 CI_ADDR 3 CI_ADDR 10 PCM_TS_DATA 4 PCM_MDI 0 7 PCM_MIVAL_ERR CI_CE1 CI_DET PCM_IRQA CI_CE2 PCM_MCLKI CI_ADDR 2 14 PCM_TS_VAL...

Page 32: ...MPORTANT 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 LNB_INT 24 BCM35230 NON LNB 50 Non_DVB S2 LNB Part_Allegro ...

Page 33: ... 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 3D_SYNC L_VS 36 BCM35230 NON URSA 50 ...

Page 34: ... _HDMI2 HDMI_RX0 D2 _HDMI1 HDMI_HPD_1 5V_HDMI_3 C3707 10uF C3714 1uF HDMI_HPD_3 R3733 10 3 3V_HDMI D0 _HDMI3 CK _HDMI3 C3709 0 1uF C3708 0 1uF HDMI_RX1 D2 _HDMI3 DDC_SCL_3 D1 _HDMI2 HDMI_CLK D0 _HDMI3 SCL3_3 3V CK _HDMI2 DDC_SDA_3 D2 _HDMI1 D2 _HDMI2 DDC_SDA_2 SDA3_3 3V CK _HDMI2 5V_Normal HDMI_HPD_2 HDMI_RX0 5V_HDMI_2 C3713 1uF C3712 1uF CK _HDMI3 5V_HDMI_1 CK _HDMI1 C3705 10uF R3738 10 D0 _HDMI1...

Page 35: ...3816 0 1uF DSUB_B C3803 560pF 50V R3815 1K DSUB_DET HP_LOUT_N C3814 0 1uF JK3802 JST1223 001 1 GND 2 VCC 3 VINPUT 4 FIX_POLE Q3801 2SC3052 E B C L3803 BLM18PG121SN1D 5V_Normal L3804 BG2012B080TF R3826 4 7K D3802 5 6V ESD_COMMON AMOTECH DSUB_G D3804 30V 3 3V_Normal 3 3V_Normal JK3803 KJA PH 0 0177 3 DETECT 4 L 5 GND 1 R EDID_WP R3820 OPT R3804 470K C3808 47pF 50V SIDE_HP_MUTE P3801 SPG09 DB 010 1 R...

Page 36: ...ENTS IN THE SYMBOL MARK OF THE SCHEMETIC EPHY_RDN EPHY_TDN R3902 510 C3901 0 1uF 16V L3901 CIC21J501NE R3901 510 EPHY_TDP 3 3V_Normal EPHY_LINK C3902 0 1uF 16V EPHY_RDP 2 5V_BCM35230 EPHY_ACTIVITY JK3901 XRJV 01V D12 180 1 2 3 4 5 6 7 8 D1 D2 D3 D4 9 D3906 5 5V ADLC 5S 03 015 D3901 5 5V ADLC 5S 03 015 D3902 5 5V ADLC 5S 03 015 D3905 5 5V ADLC 5S 03 015 D3903 5 5V ADLC 5S 03 015 D3904 5 5V ADLC 5S ...

Page 37: ...0pF 50V C4921 0 01uF R4902 33 R4911 0 C4901 1000pF OPT R4908 0 C4925 10uF 35V R4921 18 1 16W C4938 0 01uF 50V C4924 0 033uF 50V R4930 1 CIS21J121 C4919 0 033uF 50V 24V_AMP R4909 0 AUD_LRCK R4924 3 3 C4909 33pF OPT C4932 0 33uF 50V R4920 18 1 16W SPK_R AMP_RESET_N C4916 2200pF 50V R4912 10K OPT R4919 18 1 16W 3 3V_DVDD R4922 18 1 16W 0 1uF C4942 50V Amp_Mute_PDN C4914 4700pF 3 3V_AU_AVDD R4927 1 CI...

Page 38: ...V2_CVBS_DET CHBO_TS_SERIAL 5V_HDMI_4 SPK_R _HOTEL 3D_SYNC CHB_RESET TW9910_RESET SPK_R _HOTEL CHBO_TS_SYNC CHBO_TS_VAL_ERR CHBO_TS_CLK TU_RESET_SUB 3D_GPIO_2 3D_SYNC_RF SDA3_3 3V 3D_GPIO_1 3D_GPIO_0 SCL3_3 3V M_REMOTE_RX DC_MREMOTE M_REMOTE_TX M_RFModule_RESET DD_MREMOTE SCART1_Rout_N SCART1_Lout_P SC_ID SC_RE2 SC_FB DTV MNT_V_OUT SC_RE1 SC_CVBS_IN SCART1_Lout_N DTV_ATV_SELECT INCM_VID_SC SCART_MU...

Page 39: ...CL0_3 3V S2_RESET L5102 120 ohm R5116 220 L5104 MLB 201209 0120P N2 R5111 0 22uF C5127 R5113 1K OPT RF_BOOSTER_CTL R5106 1K C5130 22uF 10V C5105 100pF 50V TU_RESET C5124 0 1uF 16V C5109 0 1uF 16V 3 3V_DE 1 26V_TU 5V_TU R5114 1K OPT 3 3V_TU C5107 100pF 50V C5115 100pF 50V 3 3V_Normal C5119 2 2uF 16V FE_TS_DATA 0 7 C5122 22uF 16V Q5102 MMBT3906 NXP E B C RF_SWITCH_CTL_2 C5110 100uF 16V TU_TS_CLK 5V_...

Page 40: ...0210 M2 1 GASKET_5 0T MDS62110210 M4 1 GASKET_5 0T MDS62110210 M3 1 GASKET_5 0T MDS62110210 M7 1 GASKET_5 0T MDS62110210 M6 1 GASKET_5 0T MDS62110210 M5 1 GASKET_5 0T MDS62110210 M8 1 GASKET_5 0T MDS62110210 M11 1 GASKET_5 0T MDS62110210 M10 1 GASKET_5 0T MDS62110210 M9 1 GASKET_5 0T MDS62110210 M12 1 GASKET_5 0T MDS62110206 M2 3 GASKET_6 5T MDS62110206 M4 3 GASKET_6 5T MDS62110206 M3 3 GASKET_6 5...

Page 41: ... DIM1 23 GND P DIM2 24 Err OUT 25 C506 0 1uF 50V RL_ON R553 47K C515 0 47uF 25V 1 5V_DDR R591 10K POWER_ON OFF1 3 5V_ST R518 0 POWER_16_GND C591 0 1uF 16V C539 10uF 6 3V C594 22uF 10V 560pF C593 50V 10uF C590 10V L517 BLM18PG121SN1D L DIM0_VS L_VS R574 0 POWER_16_URSA_SCAN R573 0 POWER_16_BCM_SCAN R595 4 3K 1 R593 3 9K 1 R592 1K 1 R510 3 4 7K 1 PD_ 18 5V R510 4 5 6K 1 PD_ 20V R511 3 1 21K 1 PD_ 18...

Page 42: ...2110209 M16 5 GASKET_8 5T MDS62110209 M14 5 GASKET_8 5T MDS62110205 M15 4 GASKET_7 5T MDS62110205 M14 4 GASKET_7 5T MDS62110209 M13 5 GASKET_8 5T MDS62110209 M15 5 GASKET_8 5T MDS62110204 M16 2 GASKET_5 5T MDS62110204 M14 2 GASKET_5 5T MDS62110208 M14 GASKET_4 5T MDS62110206 M16 3 GASKET_6 5T MDS62110206 M15 3 GASKET_6 5T MDS62110206 M14 3 GASKET_6 5T MDS62110210 M13 1 GASKET_5 0T MDS62110208 M15 ...

Page 43: ......

Page 44: ...e 2010 12 27 Applied chassis models Chassis LA12B Models 42 47LK550 UA 42 47 55LK530 UC LCD TV Division LCD TV Lab AT Gr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ...K PACK JACK PACK at SIDE at SIDE JACK PACK JACK PACK at REAR at REAR SCL SDA_3 3V SCL SDA_3 3V LCD Module USB2 IF SIF TU_CVBS Reset IF_AGC SDA SCL_5V RF TDVJ H101F MCLK Ethernet Side AV Gender CVBS L R USB1 DP DM 5V DP DM 5V Y Pb Pr Side Component Gender DDR3 2Gbit HP_L R LVDS_120Hz LGE35230 ATSC LGE35230 ATSC 1 Overview for LGE35230 ATSC US SIL9287B 3x1 HDMI Switch EARPHONE AMP TPA6132 Copyright ...

Page 46: ...I_SC_R1 VI_B VI_R VI_G HSYNC_IN VSYNC_IN HDMI0_CLKN HDMI0_CLKP HDMI0_D0N HDMI0_D0P HDMI0_D1N HDMI0_D1P HDMI0_D2N HDMI0_D2P TMDS DDC HPD_1 HDMI 2 HDMI 3 HDMI 3x1 Switch SIL9287B IF MAIN CVBS MAIN IF MAIN VI_IFP0 VI_IFM0 VI_CVBS3 V_sync DSUB_VSYNC TMDS DDC HPD_2 TMDS DDC HPD_3 RF SIDE_Component Phone Jack Y COMP1 Y Pb COMP1_Pb Pr COMP1 Pr VI_Y1 VI_PB1 VI_PR1 TDVJ H101F Main tuner SCL3_3 3V SDA3_3 3V...

Page 47: ...5727 TAS5727 SPDIF_OUT I2S HP_L ROUT_N P TPA6132A2 EARPHONE AMP TPA6132A2 EARPHONE AMP VI_SIF1_1 2 AV2 Audio Rear AV2_L_IN AV2_R_IN AADC_LINE_L4 AADC_LINE_R4 Comp2 Audio Rear SC COMP2_L_IN SC COMP2_R_IN AADC_LINE_L2 AADC_LINE_R2 AV1 or Comp1 Audio Used in common AV1_L_IN AV1_R_IN RGB PC Audio AADC_LINE_L1 AADC_LINE_R1 PC_L_IN PC_R_IN ADAC_AL_N ADAC_AL_P ADAC_AR_N ADAC_AR_P Copyright ⓒ 2011 LG Elec...

Page 48: ...or NC VESA LGD BIT_SEL H or NC 10 bit L 8 bit 10 bit R Dual link LVDS Output 24 51Pin LVDS Output PANEL_VCC 12V 10 bit R Dual link LVDS Output 24 41Pin LVDS Output Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ... UPD78F05 14 DDC_I2C_1 2 3 HPD HDMI_HPD_1 2 3 HDMI_CEC SIL9287B HDMI 3x1 Switch IC3701 SIL9287B HDMI 3x1 Switch IC3701 5V_HDMI_1 2 3 VDD 5V EEPROM ARC Audio Return Channel CEC_REMOTE Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...PWR Switch IC1204 USB_PWRFLT_1 USB_PWRON_1 5V USB2 WIFI_DP WIFI_DM 5V_USB USB_PORT2DP USB_PORT2DN USB PWR Switch IC1203 3 3V_Noraml USB_PWRFLT_2 USB_PWRON_2 5V 3 3V_Noraml Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ... ATSC Tuner 0xC2 HDMI Switch SII9287B 0xB0 HDMI Switch SII9287B 0xB0 NVRAM M24M01 0xA8 NVRAM M24M01 0xA8 MICOM UPD78F0514 0x52 MICOM UPD78F0514 0x52 AMP TAS5727 0x54 AMP TAS5727 0x54 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...501 18 pin High Check Power Board or Module Check IC501 4 5 8 Output Voltage IC501 0 9V IC508 1 5V IC504 2 5V IC505 3 3V Replace IC501 4 5 8 Re download Micom software Check Micom Voltage IC602 pin 48 3 5V Replace L503 Check LVDS Power Voltage Q507 12V Replace Q507 Change Module ok ok ok ok ok ok ok ok ok No No No No No No No No No Check X101 Clock 54 MHz Replace X101 ok No Replace Power board ok ...

Page 53: ...3 Check Tuner 5V Power L5101 L5103 Check IC507 Check BCM LVDS Output Replace or BCM IC101 or Main Board ok ok ok ok ok No No No No No Replace IC507 No Bad Tuner Replace Tuner Replace L5101 L5104 ok 2 Trouble shooting No video Digital TV video Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...eck CVBS Signal TU5101 11 Pin Replace IC5103 Check Tuner 5V Power L5101 L5103 Check IC507 ok ok ok ok ok No No No No No Replace IC507 No Bad Tuner Replace Tuner Replace L5101 L5103 ok Check BCM LVDS Output Replace BCM IC101 or Main Board Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ...1102 CVBS Signal Line Rear AV R1140 Side AV R1136 ok ok ok No Replace Jack ok Check CVBS_DET Signal Rear AV Detect R1129 Side AV Detect R1113 Replace R1129 or R1113 No No Check BCM LVDS Output Replace LGE35230 IC101 or Main Board Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ... Y PB PR signal Line ok ok ok No Replace Jack Check COMP_DET Signal Replace R1114 or R1130 No ok No Check BCM LVDS Output Replace BCM IC101 or Main Board 5 Trouble shooting No video Component Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ...heck P3801 H V_Sync R G B Signal Line L3806 7 8 ok ok ok No No Re download EDID data or Replace the defective IC ok Replace Jack Check DSUB_DET Replace R3815 No ok No Check BCM LVDS Output Replace BCM IC101 6 Trouble shooting No video RGB PC Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...nd I2C line Check JK70 1 2 3 4 ok ok ok No No Replace Coil ok Replace Jack Check HDMI Signal output of HDMI Switch IC701 Replace the defective IC No Check L2103 3 3V Replace the defective IC No OK ok No Check BCM LVDS Output Replace BCM IC101 or Main Board Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 59: ...ce and connector damage Replace speaker ok No Off Toggle the Menu Check AMP IC IC1702 Power 24V 3 3V No Check Regulator L1709 L1710 L1711 Check Mstar I2S Output R1754 5 6 No Check signal line Or replace BCM IC101 Check AUDIO_MASTER_CLK R1753 No Replace BCM IC101 or Main Board ok Check AMP I2C Line R1710 1711 No Check signal line Or replace BCM IC101 Copyright ⓒ 2011 LG Electronics Inc All right re...

Page 60: ...103 Check Tuner 5V Power L2101 L2104 ok ok ok ok No No No Bad Tuner Replace Tuner Check IC507 No Replace IC507 No Replace L2101 2104 ok 9 Trouble shooting No audio Digital TV audio Follow procedure 8 All source audio trouble shooting guide ok Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ...C507 No Replace L2101 2104 ok 10 Trouble shooting No audio Analog TV audio Check TU_SIF path Including Q2104 TR buffer to LGE35230 ok Check SIF Signal TU2101 9th Pin ok No Bad Tuner Replace Tuner Follow procedure 8 All source audio trouble shooting guide ok No Replace component Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...ace JK1105 No ok Check Audio Master clock AUD_LRCH AUD_LRCK AUD_SCK AMP pin20 21 22 Replace LGE35230 Check JK1105 No ok Check Audio AMP voltage 3 3V 24V_AMP ok ok Check output L1703 4 7 8 AMP output ok Replace Audio AMP TAS5727 No Follow procedure refer to Audio signal block Diagram Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 63: ...Cable for damage or open conductor Check JK1105 Signal Line ok ok No Replace Jack Follow procedure 8 All source audio trouble shooting guide Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...801 Signal path ok No ok Replace Jack or components Follow procedure 8 All source audio trouble shooting guide 13 Trouble shooting No audio RGB PC Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ...Check JK3802 SPDIF_OUT Signal 5V ok No Replace Jack 14 Trouble shooting No audio SPDIF ok Replace IC101 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...ute Pin 13 Check Audio OSD Audio OSD active or inactive mode Check R3816 R3858 JK3803 No active Check Earphone output Pin 5 16 ok No Replace IC3804 TPA6132A2 ok Follow procedure refer to Audio signal block Diagram Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ...heck 5V voltage level at Bead or Jack Y Replace one of IC1203 or IC1204 and then check N Maybe LGE35230 IC101 has problems Replace It Exception 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 ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 68: ...1 Y Check LAN Port LED N Replace one of LAN Port Recheck Y Maybe LGE35230 LAN PHY block has problems Replace It N Check LAN Cable Recheck LAN Cable N Y Check MAC Address Replace Main B D N Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 69: ...ption2 using reference file GP3_BCM_TOOL OPTION N Correct the Tool Option3 using reference file GP3_BCM_TOOL OPTION N Correct the Tool Option4 using reference file GP3_BCM_TOOL OPTION N Correct the Tool Option5 using reference file GP3_BCM_TOOL OPTION Reference file Y Check the Tool Option 6 N Correct the Tool Option5 using reference file GP3_BCM_TOOL OPTION GP3_Tool option Copyright ⓒ 2011 LG Ele...

Page 70: ...sub menus for detail set up 1 Adjust Check Refer to next page 2 ADC Data This menu supports manual ADC adjustment for COMP 480i COMP 1080P RGB 3 Power Off Status You can check previous power off history with this menu 4 5 System There are various sub menus for TV system setting 6 Model Number D L You can change TV System s model name Serial Number manually 7 Test Option 8 External ADC You can adju...

Page 71: ...ialog box shows the result of White Balance adjustment OK NG 4 Adjust ADC You need not control ADC 5 EDID This dialog box shows the status of EDID Download Adjust Check 1 Country Group Press OK to Save Country Group Code Country Group Country 2 Tool Option Tool Option1 Tool Option2 Tool Option3 Tool Option4 Tool Option5 Tool Option6 3 Adjust White Balance OK 0 4 Adjust ADC OTP 480i Component 1080p...

Page 72: ...n The latest S W put in the LG DTV folder of USB Memory USB connects to USB jack for service The SW update is finished please check new SW version by in start menu Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

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