LG 32LJ600U Service Manual Download Page 53

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Standard Repair Process Detail Technical Manual

Voltage and speaker checking method
when there is no audio

C. Audio error_No audio/Normal video

A13

Established

date

Revised

date

Error

symptom

Content

A13

SPK_R-

SPK_R+

SPK_L-

SPK_L+

<32LJ600U-ZA>

Checking methond when no audio

①

Check Main B/D 19V

②

Swap Adapter and check normal status.

After connect speaker and contact the output terminal of the speaker with GND, if there is sound ouput

noise, we conclude the speaker works well.

①

②

Only for training and service purposes.

Summary of Contents for 32LJ600U

Page 1: ... LD75K MODEL 32LJ600U 32LJ600U ZA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL CONFIDENTIAL Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 2: ...ghts reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 SOFTWARE UPDATE 10 BLOCK DIAGRAM 11 EXPLODED VIEW 17 DISASSEMBLY GUIDE 18 TROUBLE SHOOTING GUIDE APPENDIX ...

Page 3: ...he set is safe to operate 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 ...

Page 4: ...charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharg ing 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 electrostati...

Page 5: ...oints 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 component...

Page 6: ...ania Albania Bosnia Slovakia Beralus DTV MPEG2 4 DVB T2 11 countries UK Ireland Sweden Denmark Finland Norway Ukraine Kazakhstan Russia Italy Croatia Serbia DTV MPEG2 4 DVB C 37 countries Germany Netherland Switzerland Hungary Austria Slovenia Bulgaria France Spain Italy Belgium Russia Luxemburg Greece Czech Cro atia Turkey Moroco Ireland Latvia Estonia Lithuania Poland Portu gal Romania Albania B...

Page 7: ...8 19 256 Modulation Code Rate QPSK 1 2 2 5 2 3 3 4 5 6 16 QAM 1 2 2 5 2 3 3 4 5 6 64 QAM 1 2 2 5 2 3 3 4 5 6 256 QAM 1 2 2 5 2 3 3 4 5 6 DVB C Symbolrate 4 0Msymbols s to 7 2Msymbols s Modulation 16QAM 64 QAM 128 QAM and 256 QAM DVB S S2 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 DVB S2 mode 1 2 2 3 3 4 3 5 4 5 5 6 8 9 9 10 5 SCART N A...

Page 8: ...0p 14 1920 1080 67 50 60 00 HDTV 1080p 2 HDMI Input DTV No Resolution H freq kHz V freq kHz Proposed Remarks 1 640 480 31 46 59 94 SDTV 480P 2 640 480 31 50 60 00 SDTV 480P 3 720 480 15 73 59 94 SDTV DVD 480I 525I Spec out but display 4 720 480 15 75 60 00 SDTV DVD 480I 525I 5 720 576 15 62 50 00 SDTV DVD 576I 625I 50Hz 6 720 480 31 47 59 94 SDTV 480P 7 720 480 31 50 60 00 SDTV 480P 8 720 576 31 2...

Page 9: ...1 640 x 350 70Hz 31 46 70 09 EGA 2 720 x 400 70Hz 31 46 70 08 DOS 3 640 x 480 60Hz 31 46 59 94 VESA VGA 4 800 x 600 60Hz 37 87 60 31 VESA SVGA 5 1024 x 768 60Hz 48 36 60 00 VESA XGA 6 1152 x 864 60Hz 54 34 60 05 VESA 7 1280 x 1024 60Hz 63 98 60 02 VESA SXGA FHD only 8 1360 x 768 60Hz 47 71 60 01 VESA WXGA 9 1920 x 1080 60Hz 67 50 60 00 WUXGA CEA 861D FHD only ...

Page 10: ...ow move to About This TV page for update 5 TV is updating 6 After finished the update below Pop up appear 7 Click Yes TV will be DC OFF ON 8 After TV turned on Check the updated SW Version and Tool Option 2 NSU 1 Menu All Settings General About This TV 2 Click CHEK FOR UPDATES system check newest version 3 Click DOWNLOAD AND INSTALL 4 TV is updating 5 After finished the update below Pop up appear ...

Page 11: ...R5F100GEAFB IR KEY Sensor IR KEY I2C HDMI MUX LVDS USB SPDIF OUT ETHERNET USB1 USB2 OCP 1 5A OCP 1 5A HDMI1 HDMI2 ARC REAR OPTIC LAN 51P DDR3 2133 4Gb x16 X_TAL 24MHz WIFI BTcombo SUB ASSY USB_WIFI CI slot P_TS P_TS Tuner DDR3 2133 4Gb x16 HDMI2 SIDE CVBS YPbPr H P AV COMP REAR EEPROM 256Kb eMMC 5 1 4GB I2S I2C I2C I2C Analog Demod 1 Main SOC Block Diagram ...

Page 12: ...IOWR PCM_CE1 2 CI_TS_VAL CI_CD1 2 CI 5V Power detect PCM_5V_CTL 5V_CI_ON CI_IN_TS_SYNC CI_IN_TS_VAL CI_IN_TS_CLK TPO_DATA 0 7 CI_MDI 0 7 TPI_DATA 0 7 TPI_DATA 0 7 CI_CD1 2 C23 CAM_CD1_N B23 CAM_CD2_N CI_TS_VAL G28 TPI_VAL B25 CAM_CE1_N B26 CAM_CE2_N PCM_CE1 2 10K ȳ B29 EB_BE_N1 E28 EB_EB_N0 PCM_IOWR PCM_IORD EB_ADDR_0 14 EB_DATA_0 7 CI_ADDR 0 14 CI_DAT 0 7 A24 CAM_RESET C24 CAM_WAIT_N A25 CAM_REG_...

Page 13: ...SOC COMP2_Pb_IN_SOC COMP2_Pr_IN_SOC JA A CK AV1 A A ACK Jack Side SOC Side SPDIF_OUT SPDIF OUT H P JACK HP_LOUT_JAC K HP_ROUT_JAC K AM14 IEC958OUT AL15 AUDA_OUTL AM15 AUDA_OUTR SPDIF_OUT_ARC PHY0_ARC_OUT COMP2 AV_L_IN COMP2 AV_R_IN AL18 AUAD_L_CH2_IN AM18 AUAD_R_CH2_IN AUAD_L_CH2_IN AUAD_R_CH2_IN ARC OUT HDMI1 Front Speaker MICOM AMP_RESET SCK LRCK DACLRCH I2C_SCL_0 SDA_0 I2S GPIO23 Audio AMP DTA2...

Page 14: ...4 _V ARC CEC_REMOTE Port_2 DDC_I2C_2 SPDIF_OUT_ARC HDMI_HPD_2 CEC_REMOTE Port_1 DDC_I2C_1 HDMI_HPD_1 HDMI2 0 LGE PHY HDCP1 4 HDMI1 4 LGE PHY 5V 5V HDCP1 4 HDMI 3 1 4 _H CEC_REMOTE Port_3 DDC_I2C_3 HDMI_HPD_3 HDMI2 0 LGE PHY 5V HDMI3_HPD HDMI3_SDA HDMI3_SCL HDMI2_HPD HDMI2_SDA HDMI2_SCL HDMI2_HPD HDMI2_SDA HDMI2_SCL PHY0_ARC_OUT 4 HDMI 1 4 ...

Page 15: ...1_RX_DP0 DM0 USB2 0_1_DP0 DM0 RS232 IC WIFI_DP DM MICOM WOL WIFI_POWER_ON USB2_2_DP0 DM0 SOC_RX TX USB2 0_2_DP0 DM0 USB2 0_1_DP0 DM0 USB2 0_2_DP1 DM1 UART1_RXD TXD Debug Wafer UART1_RX TX SOC_RX TX UART wafer SOC_RX TX USB 1 2 0 _H USB 2 2 0 _H WIFI_EN 3 5V_WIFI OCP USB_CTL1 5V_USB_1 OCP USB_CTL2 5V_USB_2 UART0_TXD GPIO105 MAN SOC 5 USB Wi Fi M Remote UART ...

Page 16: ...3V_TU ZZ MAIN SOC MICOM ZZ LNB IR KEY EYE XWW ZUZr EYE_I2C_SDA EYE_I2C_SCL 3 5V_ST 33pF 18pF I2C_SCL4 AJ21 SCL4 I2C_SDA4 AH21 SDA4 I2C_SCL1 AK22 SCL1 I2C_SDA1 AJ22 SDA1 I2C_SCL3 AH24 SCL3 I2C_SDA3 AJ24 SDA3 I2C_SCL0 AK23 SCL0 I2C_SDA0 AJ23 SDA0 I2C_SCL2 AH23 SCL2 I2C_SDA2 AH22 SDA2 I2C_SCL5 AH25 SCL5 I2C_SDA5 AH26 SDA5 Tuner XUYr GOl P 3 3V_TU ZZ 47pF AUDIO AMP IC5600 XWWG 33pF ZZG 6 I2C Map ...

Page 17: ...ectrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the 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 IMPORTANT SAFETY NOTICE ...

Page 18: ... of Back cover 1 Remove screw in the set 2 Check both right left hole 3 Attach tape to Long nose pliers 4 Put long nose into the hole 5 Open B C with push pulling long nose to upper and lower sides 6 Disassemble Back cover Disassemble it from left to right for top side hook on Back cover DISASSEMBLY GUIDE ...

Page 19: ...ht LG Electronics Inc All rights reserved Only for training and service purposes 2 Back cover hole size Long nose spec B C Hole size w 4 6 mm t 3 5 mm Tool spec Long nose pliers Needle nose pliers Y V Y V PP W PP ...

Page 21: ... 6 7 Off when on off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error Remote control Local switch checking 10 11 Wifi operating checking 11 12 External device recognition error 12 13 E Noise Circuit noise mechanical noise 13 14 F Exterior error Exterior defect 14 First of all Check whether there is SVC Bulletin in...

Page 22: ...odule N Repair Adapter or parts End Always check record S W Version and White Balance value before replace the Main B D Replace Main B D Re enter White Balance value Precaution 1 14 A Video error Video X Audio O A9 A1 A9 A4 A2 1 First of all Check whether all of cables between board is inserted properly or not Main B D Adapter LVDS Cable Speaker Cable IR B D Cable Established date Revised date Cop...

Page 23: ... and Replace Main B D Y N End A9 2 14 2 A Video error Video X Audio X Check Adapter 19V output Repair or Replace Adapter or parts Established date Revised date Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 24: ...c SVC Bulletin Replace Main B D Check Tuner soldering Normal Picture Y N Y Close Y Close By using Digital signal level meter By using Diagnostics menu on OSD All Settings Programmes Programmes Tuning Settings Manual Tuning Check the Signal Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Clo...

Page 25: ...HDMI Y External device Cable normal External Input Component error Check external device and cable Y External device Cable normal HDMI error Check external device and cable Replace Main T con B D Replace Main T con B D N N A6 N Y End Replace module Or T Con B D Request repair for external device cable Color error A7 Established date Revised date Copyright 2017 LG Electronics Inc All rights reserve...

Page 26: ...ble Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc N Y Replace Main T con B D Screen normal Check screen condition by input External Input Component HDMI DVI Request repair for external device Component error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI b...

Page 27: ...bnormal POWEROFF_ABNORMAL1 Power off by abnormal status except CPU trouble POWEROFF_CPUABNORMAL Power off by CPU Abnormal B Power error Off when on off while viewing power auto on off Error N Y Check Power Off Mode Fix A C cord Outlet and check each 3 phase out Check A C cord Check for all 3 phase power out Check outlet Replace Main B D CPU Abnormal If Power Off mode is not displayed Check Adapter...

Page 28: ... Y N Set correct output Check audio B 19V of Adapter Normal voltage Y N Replace Adapter and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End Disconnection A11 A12 A9 Established date Revised date Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 29: ...Discontinuation Noise only for External Input Connect and check other external device N Y Normal audio Check and fix external device Replace Adapter N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 19V Replace Main B D In case of External Input signal error Check and fix...

Page 30: ... of R C Check Repair Cable connection Connector solder Normal operating Check Stan by Voltage On Main B D Normal Voltage Close N N Check Stan by voltage on Power B D Replace Power B D or Replace Main B D Check IR Output signal Normal Signal N Y Repair Replace IR B D N Replace Main B D Y Y A13 A9 A13 A13 10 14 Remote control Local switch checking D Function Error Established date Revised date Copyr...

Page 31: ...Fi Mac value is NG Y Check Repair Wifi cable connection N Check the Wi Fi Wafer pin Change the Wifi assy Normal Voltage Close Y Y N Replace Main B D Wi Fi Mac value is NG N Close A15 A4 A4 A15 Established date Revised date Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 32: ... Check input signal Signal input Y N External Input and Component Recognition error Check and fix external device cable HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information Established date Revised date Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 33: ...noise from the cabinet refer to the KMS fix information and then proceed as shown in the solution manual For models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual Establis...

Page 34: ...Module damage Cabinet damage Replace cabinet Replace remote control Remote control damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 35: ...ideo error _Vertical Horizontal bar residual image light spot Connection diagram A6 6 A Video error_ Color error Check Link Cable EPI reconnection condition A7 7 Adjustment Test pattern ADJ Key A8 8 Appendix Defected Type caused by T Con Inverter Module Exchange Main Board 1 A 1 5 9 Exchange Main Board 2 A 2 5 10 Exchange Power Board PSU A 3 5 11 Exchange Module 1 A 4 5 12 Exchange Module 2 A 5 5 ...

Page 36: ... MODE checking method A11 16 C Audio error_ No audio Normal video Checking method in menu when there is no audio A12 17 Voltage and speaker checking method when there is no audio A13 18 D Function error Remote control operation checking method A14 19 Motion Remote operation checking method A15 20 Wifi operation checking method A15 Continued from previous page Copyright 2017 LG Electronics Inc All ...

Page 37: ...eo Normal audio A2 Entry method 1 Press the ADJ button on the remote control for adjustment 2 Enter into White Balance menu 3 After recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after replacing the MAIN BOARD ALL MODELS Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 38: ...20dB etc Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A3 Established date Revised date Error symptom Content A3 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 39: ...r video lag stop 1 Checking method for remote control for adjustment Press the IN START with the remote control for adjustment Version ALL MODELS A4 Established date Revised date Error symptom Content A4 v Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 40: ...ing each voltage from power supply finally replace the MAIN BOARD Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop ALL MODELS A5 Established date Revised date Error symptom Content A5 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 41: ...ical Horizontal bar residual image light spot As the part connecting to the external input check the screen condition by signal A6 Established date Revised date Error symptom Content A6 ALL MODELS Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 42: ...ion condition A Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion A7 Established date Revised date Error symptom Content A7 ALL MODELS Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 43: ...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 A8 Established date Revised date Error symptom Content A8 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 44: ...CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange Main Board 1 A 1 5 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 45: ...normal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange Main Board 2 A 2 5 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 46: ...Appendix Exchange Power Board PSU No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 47: ...odule 1 A 4 5 Crosstalk Crosstalk Press damage Press damage Un repairable Cases In this case please exchange the module Press damage Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 48: ...rtical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 A 5 5 Un repairable Cases In this case please exchange the module Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 49: ...ck front Power Indicator B Power error _No power A9 Established date Revised date Error symptom Content A9 ST BY condition On or Off Power ON condition Turn Off Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 50: ...Detail Technical Manual Revised date A10 Error symptom Content Check power input voltage and ST BY 3 5V B Power error _No power A10 Check the DC 13 2V Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 51: ...justment item 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A11 Established date Revised date Error symptom Content A11 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 52: ...und Out 4 Select TV Speaker Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A12 Established date Revised date Error symptom Content A12 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 53: ...ymptom Content A13 1 SPK_R 2 SPK_R 3 SPK_L 4 SPK_L 32LJ600U ZA Checking methond when no audio Check Main B D 19V Swap Adapter and check normal status After connect speaker and contact the output terminal of the speaker with GND if there is sound ouput noise we conclude the speaker works well Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 54: ...te control operation checking method D Function error A14 Established date Revised date Error symptom Content A14 Checking order to check remote control IR EYE Sensor Pin Pin name 1 3 4V_VCC 2 Wifi_DM 3 Wifi_DP 4 GND 5 WOL WIFI_Power_ON 6 3 4V_VCC 7 COMBO_RESET 8 GND 9 BT_WAKEUP_DEVICE 10 BT_WAKEUP_HOST 11 GND 12 GND 13 NC 14 NC 15 NC 16 EYE_SDA 17 EYE_SCL 18 GND 19 IR 20 LED_R 21 GND 22 3 4V_VCC ...

Page 55: ...n the terminal 22 Checking order to check motion remote wifi Wifi Assy Front Wifi Assy Rear 32LJ600U ZA Wifi Only 모델 Pin Pin name 1 3 4V_VCC 2 Wifi_DM 3 Wifi_DP 4 GND 5 WOL WIFI_Power_ON 6 3 4V_VCC 7 COMBO_RESET 8 GND 9 BT_WAKEUP_DEVICE 10 BT_WAKEUP_HOST 11 GND 12 GND 13 NC 14 NC 15 NC 16 EYE_SDA 17 EYE_SCL 18 GND 19 IR 20 LED_R 21 GND 22 3 4V_VCC 23 KEY2 24 KEY1 25 GND Copyright 2017 LG Electroni...

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