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LG 60PB660V, Service Manual

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LG 60PB660V Service Manual Download Page 44

Copyright ©  2014 LG Electronics Inc. All rights reserved. 
Only for training and service purposes 

LGE Internal Use Only 

Check video output 

Y 

Follow procedure All source audio 
trouble shooting 

Maybe LGE2122(MTK IC) internal 
audio DSP has problems. Replace It 

N 

Follow procedure digital TV video 
trouble shooting 

N 

7-1. Tuner Audio Trouble Shooting 

Summary of Contents for 60PB660V

Page 1: ... eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL67984101 1402 REV00 PLASMA TV SERVICE MANUAL CHASSIS PD42A MODEL 60PB660V 60PB660V ZD CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL ...

Page 2: ...opyright LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 6 BLOCK DIAGRAM 10 EXPLODED VIEW 11 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...hout 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 phone jacks...

Page 4: ...y models 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC 4 Module General Specification 60 FHD No Item Specification R...

Page 5: ... Heterodyne Digital COFDM DVB T T2 Need Update Guard Interval Bitrate_Mbit s 1 4 1 8 1 16 1 32 Modulation Code Rate QPSK 1 2 2 3 3 4 5 6 7 8 16 QAM 1 2 2 3 3 4 5 6 7 8 64 QAM 1 2 2 3 3 4 5 6 7 8 DVB C Symbolrate 4 0Msymbols s to 7 2Msymbols s Modulation 16QAM 64 QAM 128 QAM and 256 QAM DVB S symbolrate DVB S2 8PSK QPSK 2 45Msymbol s DVB S QPSK 2 45Msymbol s viterbi DVB S mode 1 2 2 3 3 4 5 6 7 8 D...

Page 6: ... adjustment Enter into HEAT RUN MODE 1 Press the POWER ON KEY on R C for adjustment 2 OSD display and screen display PATTERN MODE Set is activated HEAT run without signal generator in this mode Single color pattern WHITE of HEAT RUN MODE uses to check panel Caution If you turn on a still screen more than 20 minutes Especially digital pattern cross hatch pattern an after image may be occur in the b...

Page 7: ...abel of panel right top deviation 0 5V 4 1 2 Vs adjustment 1 Connect terminal of D M M to Vs pin of P811 connect terminal to GND pin of P811 2 After turning VR901 voltage of D M M adjustment as same as Vs voltage which on label of panel right top deviation 0 5V 4 2 Adjustment of White Balance Required Equipment Remote controller for adjustment Color Analyzer CS 1000 CA 210 or same product CH 10 PD...

Page 8: ...button of a service R C Baud rate 115200 bps 2 Connect RS232 C Signal Cable and start Option Check Program Ver3 8 3 Scan serial Number and press F5 button 4 Check OK on program 1 program 5 Press In start button on SVC R C check Serial Number and Model Name 4 4 Check Tool Option and write Country Group Area Code Option D L Refer to Table 3 3 insert tool option 4 5 PING TEST In this case Network set...

Page 9: ... red button on R C to enter Customer Support menu 2 Move to signal test menu And check Serial No Model Name Select the STATION Diagnostics To set 6 SW Download Guide Before put a epk to USB Stick make LG_DTV folder in USB Then put epk file to LG_DTV folder and Turn on TV 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in U...

Page 10: ... 10 LGE Internal Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes BLOCK DIAGRAM ...

Page 11: ...W Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of...

Page 12: ...13 JTCK AK10 JTDI AK11 JTDO AL9 JTMS AJ11 JTRST AJ12 OSDA0 AH11 OSCL0 AH10 OSDA1 AF11 OSCL1 AG11 XTALI AN29 XTALO AM29 AVDD33_XTAL_STB AN30 AVSS33_XTAL_STB AL29 AVDD33_VGA_STB AN17 AVSS33_AVSS33_VGA_STB AL17 AVDD33_PLL AL26 AVSS33_PLLGP AC21 AVSS33_CPUPLL H21 AVDD10_LDO AM17 AVDD10_ELDO AN16 U0TX AH15 U0RX AH14 U1TX AH13 U1RX AG13 POWE D24 POOE B25 POCE1 D25 POCE0 A25 PDD7 C22 PDD6 B22 PDD5 A22 PD...

Page 13: ...W27 HDMI_0_SDA AC26 HDMI_1_SDA AB26 HDMI_2_SDA Y26 HDMI_3_SDA W26 HDMI_0_PWR5V AE29 HDMI_1_PWR5V Y27 HDMI_2_PWR5V AA28 HDMI_3_PWR5V V28 HDMI_0_HPD AD29 HDMI_1_HPD AA27 HDMI_2_HPD AA29 HDMI_3_HPD V29 AVDD12_HDMI_0_RX AA33 AVDD12_HDMI_1_RX AA32 AVDD12_HDMI_2_RX P33 AVDD12_HDMI_3_RX P32 AVDD33_HDMI AH33 AVSS33_HDMI_RX_1 AE27 AVSS33_HDMI_RX_2 T25 AVSS33_HDMI_RX_3 W25 AVSS33_HDMI_RX_4 AD27 HDMI_0_RX_0 ...

Page 14: ...VCCK_68 AD17 VCCK_69 AD14 VCCK_70 AB12 VCCK_71 AA12 VCCK_72 AC12 VCC3IO_C T9 VCC3IO_B_1 Y10 VCC3IO_B_2 AA10 VCC3IO_A_1 D22 VCC3IO_A_2 E22 DVSS_1 AC18 DVSS_2 AB21 DVSS_3 AB14 DVSS_4 N13 DVSS_5 P13 DVSS_6 R13 DVSS_7 T13 DVSS_8 U13 DVSS_9 V13 DVSS_10 W13 DVSS_11 Y13 DVSS_12 P18 DVSS_13 N14 DVSS_14 P14 DVSS_15 R14 DVSS_16 T14 DVSS_17 U14 DVSS_18 V14 DVSS_19 W14 DVSS_20 Y14 DVSS_21 R18 DVSS_22 N15 DVSS...

Page 15: ...5TQ4G63AFR PBC IC701 1 DDR_512MB_HYNIX A0 N3 A1 P7 A2 P3 A3 N2 A4 P8 A5 P2 A6 R8 A7 R2 A8 T8 A9 R3 A10 AP L7 A11 R7 A12 BC N7 A13 T3 A15 M7 BA0 M2 BA1 N8 BA2 M3 CK J7 CK K7 CKE K9 CS L2 ODT K1 RAS J3 CAS K3 WE L3 RESET T2 DQSL F3 DQSL G3 DQSU C7 DQSU B7 DML E7 DMU D3 DQL0 E3 DQL1 F7 DQL2 F2 DQL3 F8 DQL4 H3 DQL5 H8 DQL6 G2 DQL7 H7 DQU0 D7 DQU1 C3 DQU2 C8 DQU3 C2 DQU4 A7 DQU5 A2 DQU6 B8 DQU7 A3 VREF...

Page 16: ...I_MDI 4 CI_MDI 5 R1412 10K OPT 5V_CI_ON AR1406 33 CI_MDI 1 CI_CD2 CI_MDI_CLK CI_OE CI_ADDR 0 7 MT5369_TS_VAL CI_MDI 6 CI_WE CI_MDI 7 R1405 33 CI_MDI 2 CI_MDI 3 REG MT5369_TS_IN 7 MT5369_TS_IN 2 R1409 10K MT5369_TS_CLK P_ 5V MT5369_TS_IN 3 R1406 100 CI_ADDR 8 14 JK1401 10067972 050LF G1 G2 57 21 52 16 10 47 41 5 36 59 23 45 54 18 49 43 13 7 38 2 25 56 20 51 15 9 46 40 4 35 58 22 53 17 11 48 42 12 6...

Page 17: ...1uF 16V C1123 3300pF 50V R1116 0 OPT R1128 3 6K LNB C1150 0 1uF 16V R1118 10K R1138 120K 1 LNB R1140 1 6K 1 LNB POWER_ON1 L1107 2 2uH NR5040T2R2N MOD_ON C1105 1uF 10V R1115 51K 1 12V_LNB L1106 22 0uH LNB EAP61606601 C1130 10uF 6 3V L1103 2 2uH NR5040T2R2N C1135 0 01uF 50V LNB C1118 1uF 10V R1146 27K 1 L1113 BLM18PG121SN1D LNB C1147 15pF 50V LNB R1102 33K 1 C1113 0 1uF 16V C1152 22uF 6 3V C1110 10u...

Page 18: ...3034 120K SI1012CR T1 GE3 Q3010 HDMI_CEC_FET_VISHAY S D G R3033 27K D3010 BAT54_SUZHO 30V IR VS_ON 17V_DET R3036 33K OPT AMP_MUTE RUE003N02 Q3010 1 HDMI_CEC_FET_ROHM S D G MHL_DET R3038 10K OPT R3037 0 OPT R3025 0 R3035 0 EYE_SDA EYE_SCL 3 3V_ST R3039 10K EYE R3040 10K EYE IC3001 R5F100GEAFB 30 1 2 3 4 5 6 7 8 9 10 11 12 13 P50 INTP1 SI11 SDA11 14 P51 INTP2 SO11 15 P17 TI02 TO02 16 P16 TI01 TO01 I...

Page 19: ...04 10uF 10V 3 3V_MHL C3302 0 1uF 16V C3309 0 1uF 16V 5V_MHL C3308 0 1uF 16V C3306 0 1uF 16V OPT C3303 10uF 10V C3305 0 1uF 16V 3 3V_MHL L3301 BLM18PG121SN1D 1 2V_MHL L3302 BLM18PG121SN1D C3310 0 1uF 16V P_ 5V Q3301 MMBT3904 NXP E B C R3344 10K MHL_DET 5V_MHL HDMI_DET_1 R3345 10K DDC_SCL_MHL_JACK DDC_SCL_MHL DDC_SDA_MHL 5VBUS L3300 BLM18PG121SN1D 3 3V_MHL DDC_SDA_MHL DDC_SCL_MHL R3330 47K R3328 4 7...

Page 20: ...SC_R C3614 27pF 50V EU P_ 17V EPHY_TDP R3659 510 EU MMBT3904 NXP Q3601 EU SC_R_IN EPHY_RDN R3661 30K EU R3652 470K EU R3689 100K OPT P_ 17V C3634 33pF EU R3644 0 EU R3656 33 EU R3673 10K ZD36022 5 5V R3648 1K EU SC_CVBS_OUT P3610 12507WS 04L 1 2 3 4 5 3 3V_ST ZD36018 5 5V OPT ZD3606 5 5V OPT R3615 10K COMP1 AV1_R_IN R3607 470K COMP1_Y AV1_CVBS 3 3V_MULTI COMP1 AV1_L_IN AV1_CVBS_DET ZD3605 COMP1_Pr...

Page 21: ...8 10uF 6 3V PB690 EYE_SDA ZD4108 5 5V OPT 3D_SYNC_RF 3 3V_ST KEY1 C4110 10pF 50V R4116 10K C4112 10pF 50V OPT 3 3V_ST 3 3V_ST ZD4100 5 5V OPT C4116 220pF 50V ZD4102 5 5V OPT C4102 10uF 6 3V R4119 22 P4306 12507WR 08L PB690 1 2 3 4 5 6 7 8 9 3 3V_MULTI P4307 12507WR 10L 1 2 3 4 5 6 7 8 9 10 11 C4113 10pF 50V M_REMOTE_RST C4115 220pF 50V R4114 4 7K OPT R4113 22 C4111 10pF 50V OPT KEY2 R4120 22 EYE Z...

Page 22: ...V P_ 5V USB_DM2 C4307 100uF 16V USB_CTL3 USB_DP1 USB_DP2 3 3V_MULTI 3 3V_MULTI USB_CTL2 D4306 RCLAMP0502BA OPT D4304 RCLAMP0502BA OPT USB_DP3 C4310 0 1uF C4308 0 1uF JK4304 1 2 3 4 5 JK4305 3AU04S 305 ZC LG 1 2 3 4 5 JK4306 3AU04S 305 ZC LG 1 2 3 4 5 IC4304 AP2171DM8G EAN62786701 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_1 7 OUT_2 8 NC IC4305 AP2171DM8G EAN62786701 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_...

Page 23: ...11 4700pF C5614 0 1uF C5639 2200pF 50V C5603 10uF 10V OPT P_ 17V_AMP I2C_SDA1 L5607 BLM18PG121SN1D R5607 18K 1 3 3V_AMP C5609 4700pF L5603 Coil_TAIYO 10 0uH R5606 33 I2C_SCL1 SPK_L C5629 330pF 50V AUD_LRCK C5637 2200pF 50V C5618 0 1uF 50V C5630 0 47uF 50V C5633 0 1uF 50V C5613 2200pF 50V AMP_RESET_N L5605 Coil_TAIYO 10 0uH C5617 0 033uF 50V C5632 0 1uF 50V C5606 0 1uF 16V 3 3V_AMP 33 R5605 C5610 0...

Page 24: ...0K TU_DEMOD_CORE R6519 11K 1 TU_1 2V L6505 D_Demod_Core Demod_Core L6507 BLM18PG121SN1D EU BR ONLY 3 3V_TU 3 3V_TU FE_DEMOD1_TS_ERROR LNB_OUT TU_GND_B TU_GND_B TU_GND_B TDJH G101D TU6505 AJJA Tuner 47 SHIELD 6 IF P 7 IF N 8 NC_2 9 NC_3 1 B1 3 3V 2 NC_1 3 IF_AGC 4 SCL 5 SDA A1 A1 B1 B1 TDJH H101F TU6506 US Tuner 47 SHIELD 6 IF P 7 IF N 8 NC_2 9 NC_3 1 B1 3 3V 2 NC_1 3 IF_AGC 4 SCL 5 SDA A1 A1 B1 B1...

Page 25: ...0_15 LNB C6907 10uF 25V LNB D6900 LNB A_GND C6911 0 22uF LNB D6903 40V LNB_SMAB34 C6903 0 01uF 50V LNB D6904 1 40V LNB_SX34 C6908 0 1uF LNB C6902 0 22uF 25V LNB A_GND 12V_LNB R6907 4 7K LNB 3 3V_MULTI R6908 33 LNB IC6900 A8303SESTR T S 1 VCP 3 NC_1 7 SCL 9 ADD 10 TONECTRL 11 TCAP 12 ISET 13 VREG 14 GND 15 VIN 16 LX 17 GNDLX 18 NC_2 19 NC_3 20 BOOST 5 TDO 8 SDA 6 IRQ 4 TDI 2 LNB 21 EP GND 69 LNB 20...

Page 26: ... VCCQ_3 N4 VCCQ_4 P3 VCCQ_5 P5 VCC_1 E6 VCC_2 F5 VCC_3 J10 VCC_4 K9 VDDI C2 VSS_1 E7 VSS_2 G5 VSS_3 H10 VSS_4 K8 VSSQ_1 C4 VSSQ_2 N2 VSSQ_3 N5 VSSQ_4 P4 VSSQ_5 P6 NC_1 A1 NC_2 A2 NC_3 A8 NC_4 A9 NC_5 A10 NC_6 A11 NC_7 A12 NC_8 A13 NC_9 A14 NC_10 B1 NC_11 B7 NC_12 B8 NC_13 B9 NC_14 B10 NC_15 B11 NC_16 B12 NC_17 B13 NC_18 B14 NC_19 C1 NC_20 C3 NC_22 C7 NC_23 C8 NC_24 C9 NC_25 C10 NC_26 C11 NC_27 C12...

Page 27: ......

Page 28: ...Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 표지 NetCast4 5 Service Guide Contents 1 Service Guide ...

Page 29: ...nent Video Trouble Shooting 5 HDMI Video Trouble Shooting 6 All Source Audio Trouble Shooting 7 Tuner Audio Trouble Shooting 8 Component RGB AV Audio Trouble Shooting 9 HDMI Audio Trouble Shooting 10 USB Trouble Shooting 11 DVR Recording Fail Trouble Shooting 12 OPTIC Audio Out Trouble Shooting 13 WIFI BT COMBO Trouble shooting Trouble Shooting Guide for LG Service Man Please check system after po...

Page 30: ...Voltage Level 17V 5V 5V_ST Check Power connector Y Check Voltage Level 3 3V at C1151 C1152 N Replace one of IC1101 Recheck Y Y Check Voltage Level 1 5V at C1125 C1126 N Replace one of IC1105 Recheck Y Y Check Voltage Level 1 2V at C1128 C1130 N Replace one of IC1102 Recheck Y Y Replace IC8100 EMMC Memory Check All Voltage Level at Bead N Replace one of Bead Recheck Y N Replace one of IC701 703 Rec...

Page 31: ... purposes LGE Internal Use Only P1100 1 17V 2 17V 3 GND 4 GND 5 5V_ST 6 5V_ST 7 5V 8 VS_DET 9 GND 10 GND 11 GND 12 VS_ON 13 5V_ST 14 17V_DET 15 RL_ON 16 AC_DET 17 M_ON 18 GND Q1102 5V C1157 L1101 5V_ST Power check 1 PSU voltage check Measure point Measure point L1112 17V Measure point ...

Page 32: ...Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only IC1101 Typ 3 3V IC1105 IC1106 Typ 1 5V Measure point Typ 12V DC DC Check ...

Page 33: ... board N Y Check 5V Voltage Level at P1100 Check Power connector Y Check all multi voltage 17v 3 3v 1 2v 5V N Check power up boot sequence Y Check LVDS Cable N Replace Cable Y Check PDP Module Check 5V Voltage Level at L1101 N Replace one of L1101 Recheck Y Check P1100 5V_ON Check GPIO Path of Micom N Y 2 No OSD Trouble Shooting ...

Page 34: ...x16_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 3 TV Video Trouble shooting Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without AT...

Page 35: ...scription 1 3 3V 2 RF_SWITCH_CTL 3 IF_AGC 4 I2C_SCL6 5 I2C_SDA6 6 IF_P 7 IF_N 8 NC 9 NC 10 NC 11 3 3V 12 DEMOD1_TS_ERROR 13 GND 14 FE_TS_CLK 15 FE_TS_SYNC 16 FE_TS_VAL 17 FE_TS_DATA 0 18 FE_TS_DATA 1 19 FE_TS_DATA 2 20 FE_TS_DATA 3 21 FE_TS_DATA 4 22 FE_TS_DATA 5 23 FE_TS_DATA 6 24 FE_TS_DATA 7 25 RESET 26 3 3V 27 I2C_SCL4 28 Demod_Core 29 LNB_TX 30 I2C_SDA4 57 LNA_CTRL_1 58 LNA_CTRL_2 Checking or...

Page 36: ...256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 4 AV COMPONENT VideoTrouble shooting Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Witho...

Page 37: ...l Format Is it supported signal Y Check AV Component JK3608 N Y Check Component Signal and resistance R3609 R3612 R1618 N Y Check Component Signal C372 C373 C374 N Replace it Y Y Check Component Cable Replace Jack Maybe LGE2122 IC105 has problems 4 1 AV Component Video Trouble Shooting Replace one of R3609 R3612 R1618 Recheck ...

Page 38: ...raining and service purposes LGE Internal Use Only Comp Y Comp Pb Comp Pr 1920 X 1080 i Dot Freq 74 25 MHz H Freq 33 75 kHz V Freq 60 Hz Comp Y CVBS R3609 Comp Pb R3612 Comp Pr R1618 Comp Y CVBS C374 Comp Pb C372 Comp Pr C373 4 2 AV Component Video Trouble Shooting ...

Page 39: ...16_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 5 HDMI Video Trouble shooting Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without A...

Page 40: ...ining and service purposes LGE Internal Use Only Check Signal Format Is it supported signal Y Check HDMI Jack JK3301 JK3302 JK3303 N Y Y Check HDMI Cable Replace Jack Maybe LGE2122 IC105 has problems Y N Check EDID D L Re Download EDID 5 1 HDMI Video Trouble Shooting ...

Page 41: ...x16_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 6 Audio AMP Trouble shooting Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without A...

Page 42: ...09 L5610 L5611 Recheck signal ok Y Check IC5600 Power OK 17V C5620 C5621 3 3V C5610 C5604 Follow Power UP_Boot Fail trouble shooting guide Y Check Main IC I2C I2S signal out put with user menu volume up down test N Maybe MTK IC LGE2122 IC105 has problems Replace it Replace Speaker N N Replace one of Resistor Capacitor Recheck signal ok Resistor R5611 R5612 R5613 R5614 Capacitor C5626 C5629 C5630 C...

Page 43: ...16_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without ATV DEMOD S2 TUNER S2 US ATSC H...

Page 44: ...ing and service purposes LGE Internal Use Only Check video output Y Follow procedure All source audio trouble shooting Maybe LGE2122 MTK IC internal audio DSP has problems Replace It N Follow procedure digital TV video trouble shooting N 7 1 Tuner Audio Trouble Shooting ...

Page 45: ... video output Y N Y Replace it N Maybe LGE2122 MTK Main IC IC105 audio block has problems Replace It N Y Check Tuner Power 3 3V Demod core 1 1V or 1 2V Replace one of L6508 L6507 L6505 Recheck Maybe Tuner has problems Replace it 7 2 Tuner Audio Trouble Shooting Check IF Level At Tuner 6 7 Pin Replace one of R346 R331 R380 R334 R335 C336 C337 C312 C310 Recheck the signal Y ...

Page 46: ...6_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without ATV DEMOD S2 TUNER S2 US ATSC H ...

Page 47: ... R3620 R3621 N Check equipment Replace Jack Check Video Output Replace one of R3607 R3613 R3620 R3621 C3605 C3606 C3607 C3608 Recheck N Follow procedure external input video trouble shooting Y Follow procedure All source audio trouble shooting N Maybe LGE2122 MTK Main IC IC105 audio block has problems Replace It 8 1 Component AV Audio Trouble Shooting ...

Page 48: ...16_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without ATV DEMOD S2 TUNER S2 US ATSC H...

Page 49: ...dure All source audio trouble shooting N Y Check EDID Pull Up Voltage Maybe LGE2122 MTK Main IC IC105 audio block has problems Replace it N Follow procedure HDMI video trouble shooting N Replace one R3330 R3374 R3315 R3316 R3311 R3314 Recheck N Check DDC Line Replace one R3302 R3303 R3312 R3313 R3320 R3321 Recheck Y 9 1 HDMI Audio Trouble Shooting ...

Page 50: ...R3x16_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without ATV DEMOD S2 TUNER S2 US ATS...

Page 51: ...ushing current In this case remove the device and try to reboot the TV AC power off on Check USB 2 0 Cable Y Y Check USB device If device is 2 5 inch HDD Check power adaptor Check 5V voltage level at analog switch IC4304 IC4305 IC4306 N Replace one of switch IC4304 IC4305 IC4306 Recheck Y Maybe Main Chip IC105 has problems Replace It 10 1 USB Trouble Shooting ...

Page 52: ...x16_256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without ATV DEMOD S2 TUNER S2 US ATSC ...

Page 53: ...ervice purposes LGE Internal Use Only N Y Check USB block N Use USB Trouble shooting guide Y Check HDD N Replace HDD Y Check video audio FE output Follow procedure video audio trouble shooting Maybe Mainchip USB block has problems Replace It 11 1 Recording Fail Trouble Shooting ...

Page 54: ...256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without ATV DEMOD S2 TUNER S2 US ATSC H NI...

Page 55: ...ly for training and service purposes LGE Internal Use Only Check Signal JK3606 3 pin Check SPDIF signal R3662 Replace LGE2122 MTK Main IC105 Y N 12 1 OPTIC Audio Out Trouble Shooting Y Maybe LGE2122 MTK Main IC IC105 has problems Replace It Replace JK3606 N ...

Page 56: ..._256 X1 1 25GB LVDS COMP Ethernet UART I2C Sub Micom Renesas HD 51P USB3 USB1 NVRAM 256KB X TAL 27MHz Wi Fi X TAL 32 768kHz eMMC 4GB USB0 CVBS COMP _LR COMP _LR IF BRAZIL F Nim SBTVD Silicon Tuner Serial TS SBTVD Demodulator SBTVD Only Cable IF Serial TS HDMI1 HDMI2 HDMI3 HDMI RX MHL Bridge SIL1292 Wi Fi BT Combo Air Cable TUNER T2 C A DVB S LNB EU T2 C S2 Without ATV DEMOD S2 TUNER S2 US ATSC H N...

Page 57: ...V voltage level at L4100 N Replace one of L4100 Recheck Y Maybe WiFi BT Combo module has problems Replace It Check USB interface DP DM Y N Replace one of Main Chip IC105 Recheck Check Signal 3D Sync and RF M_REMOT_RST at P4306 s No 6 Pin Pulse wave when 3D enable No 7 Pin default High N Replace one of Main Chip IC105 Recheck 13 1 WiFi Bluetooth Combo Y ...

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