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LG BH9530TW, Service Manual

The LG BH9530TW is a top-of-the-line home theater system with impressive specifications. Enhance your cinematic experience with its powerful surround sound and immersive 3D capabilities. Easily access the comprehensive user manual by visiting our website, where you can download it for free and unlock the full potential of this exceptional product.

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5-1

SECTION 5

WIRELESS RECEIVER PART

CONTENTS

FIRMWARE UPDATE FOR WIRELESS DEVICE

 .............................................................................................

5-2

1. WIRELESS RX UPDATE METHOD ....................................................................................................... 5-2
2. WIRELESS TX MODULE UPDATE METHOD ....................................................................................... 5-2

ONE POINT REPAIR GUIDE

 ............................................................................................................................

5-3

1. NO POWER PROBLEM ......................................................................................................................... 5-3
2. NO SOUND ............................................................................................................................................. 5-5

ELECTRICAL TROUBLESHOOTING GUIDE

 ...................................................................................................

5-8

1. POWER SUPPLY ON SMPS BOARD .................................................................................................... 5-8
2. NO PAIRING ........................................................................................................................................... 5-9
3. NO SOUND ........................................................................................................................................... 5-10

WAVEFORMS

 ..................................................................................................................................................

5-11

WIRING DIAGRAM

 ..........................................................................................................................................

5-13

BLOCK DIAGRAM

 ..........................................................................................................................................

5-15

CIRCUIT DIAGRAMS

 ......................................................................................................................................

5-17

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 5-17
2. AMP #1 CIRCUIT DIAGRAM ................................................................................................................ 5-19
3. AMP #2 CIRCUIT DIAGRAM ................................................................................................................ 5-21

PRINTED CIRCUIT BOARD DIAGRAMS

 .......................................................................................................

5-23

1. SMPS P. C. BOARD ............................................................................................................................. 5-23
2. AMP P. C. BOARD ............................................................................................................................... 5-25

Summary of Contents for BH9530TW

Page 1: ...ME CINEMA SYSTEM SERVICE MANUAL MODEL BH9530TW BH9530TW S93T1 S C W T2 W3 4 CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL Website http biz lgservice com Internal Use Only MODEL BH9530TW BH9530TW S93T1 S C W T2 W3 4 SERVICE MANUAL ...

Page 2: ...1 1 CONTENTS SECTION 1 SUMMARY SECTION 2 ELECTRICAL SECTION 3 CABINET MAIN CHASSIS SECTION 4 MT8580 F E LOADER PART SECTION 5 WIRELESS RECEIVER PART SECTION 6 REPLACEMENT PARTS LIST ...

Page 3: ...FOR BD HTS PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 GENERAL SERVICING PRECAUTIONS INSULATION CHECKING PRODEDURE ELECTROSTATICALLY SENSITIVE ES DEVICES INITIAL SYSTEM SETUP 1 5 HIDDEN KEY MODE 1 7 FIRMWARE UPDATE GUIDE 1 8 NETWORK SOFTWARE UPDATE 1 11 SPECIFICATIONS 1 13 ...

Page 4: ... sharp solder points Be certain to remove all loose foreign par ticles 4 Check for physical evidence of damage or deterioration to parts and compo nents for frayed leads or damaged insulation including the AC cord and replace if necessary 5 No lead or component should touch a high current device or a resistor rated at 1 watt or more Lead tension around protruding metal surfaces must be avoided 6 A...

Page 5: ...tal panels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be...

Page 6: ...y on your access point you need to input the security code as necessary 5 Use S T W X to select the IP mode between Dynamic and Static Normally select Dynamic to allocate an IP address automatically 6 Select Next and press ENTER to apply network settings Network connection status is displayed on the screen For details on network settings refer to Connecting to your Home Network in Owner s manual 7...

Page 7: ... to TV sound through HTS speaker automatically when TV is turned on TV and HTS should be connected with optical cable Press S to move and press W X to select On or Off Select Next and press ENTER 11 Check all the settings that you have set in the previous steps Press ENTER while Finish is highlighted to finish the initial setup settings If there is any settings to be changed use S T W X to select ...

Page 8: ... 8 0 ENTER RETURN PAUSE 1 PLATFORM INFORMATION 2 HDMI CONNECTTON INFORMATION 3 WIRELESS INFORMATION EEPROM INITIAL POWER ON STATUS Front STOP RMC 0 for 5 seconds Auto exit E2P CLEAR DOOR LOCK DVD FUNCTION and POWER ON STATUS Front STOP RMC STOP for 5 seconds Toggling D LOCK display for 3 seconds DOOR UNLOCK DVD FUNCTION and POWER ON STATUS Front STOP RMC STOP for 5 seconds Toggling D UNLOCK displa...

Page 9: ...IDE 1 COPY AN UPDATE FILE TO A MEDIA USB OR CD ROM Update File Name LG_HB_8000M80 ROM 1 An update file have to be copied onto the root of file system 2 USB and CD ROM are able to use firmware update Example Nero Burning Rom ...

Page 10: ...1 9 2 UPDATE FIRMWARE 1 Insert USB or CD ROM which has an update file 2 OSD responds to the insertion event 3 OSD is shown as below Firmware Update OSD OSD contents Front Panel contents ...

Page 11: ... DURING UPDATING 1 Progressive bar is shown on the update time repeatedly 2 Tray is opened Front Panel contents 4 AFTER UPDATE COMPLETE 1 Power off on automatically after update complete 2 Tray will be closed ...

Page 12: ... the server Downloading will takes several minutes depending You can update the software by connecting your unit directly to the software update server Configuring Network Settings To update the software by connecting your player directly to the software update server your player must be connected to network If your player is not connected to network make a physical connection Note Before updating...

Page 13: ... and downloaded file will not be re usable To update software the next time the software update procedure has to be started from the beginning again Caution Do not turn off the power during the software update 9 When update is completed the power will be turned off automatically in a few seconds 10 Turn the power back on The system now operates with the new version ...

Page 14: ... IN OPTICAL 3 V p p Optical jack x 1 TUNER FM Tuning Range 87 5 to 108 0 MHz or 87 50 to 108 00 MHz AMPLIFIER Power output 8 Ω 4 Ω 3 Ω RMS THD 10 Total 1460 W Front 180 W x 2 Center 180 W Rear 180 W x 2 Sub Woofer 200 W Passive 3D Effect Left 180 W 3D Effect Right 180 W SYSTEM Laser Semiconductor laser wavelength 405 nm 650 nm Signal system Standard PAL NTSC color TV system LAN port Ethernet jack ...

Page 15: ... 70 mm Net Weight 1 1 kg Subwoofer Type 1 Way 1 speaker Impedance Rated 3 Ω Input Power 200 W Max Input power 400 W Net Dimensions W x H x D 251 mm x 336 mm x 310 mm Net Weight 5 9 kg Top speaker Front Rear Left Front Rear Right Type 1 Way 1 speaker Impedance Rated 8 Ω Input Power 180 W Max Input power 360 W Net Dimensions W x H x D Built in Front and Rear speakers Net Weight Built in Front and Re...

Page 16: ...8 1 SYSTEM PART 1 MPEG CRYSTAL 27 MHZ 2 58 2 SYSTEM PART 2 DDR3 MEMORY 2 59 3 SYSTEM PART 3 eMMC FLASH MEMORY 2 60 4 AUDIO PART 1 S PDIF 2 61 5 AUDIO PART 2 I2S 2 62 6 HDMI PART 2 63 WIRING DIAGRAM 2 65 BLOCK DIAGRAM 2 67 CIRCUIT DIAGRAMS 2 69 1 SMPS CIRCUIT DIAGRAM 2 69 2 MAIN MICOM CIRCUIT DIAGRAM 2 71 3 MAIN POWER CIRCUIT DIAGRAM 2 73 4 MAIN MPEG CIRCUIT DIAGRAM 2 75 5 MAIN MEMORY CIRCUIT DIAGR...

Page 17: ... disc Multiple discs displaying the problem could indicate the BD lens needs to be cleaned Recommend the customer use a lens cleaner on the BD A lens cleaner is available at any local electronics retailer Do lines appear when watching multiple discs NO YES One disc displaying the issue is a problem with the disc Multiple discs displaying the problem could indicate the BD lens needs to be cleaned R...

Page 18: ...ner is available at any local electronics retailer Do lines appear when watching a TV program NO YES Ghosting appearing when watching a TV program indicates an issue with the display If the TV program is fine then connect the BD to another input on the display to determine if the problem is following the BD Does ghosting appear when the BD is connected to another TV NO YES Connect the BD to anothe...

Page 19: ...ner is available at any local electronics retailer Does rolling appear when watching a TV program NO YES Rolling appearing when watching a TV program indicates an issue with the display If the TV program is fine then connect the BD to another input on the display to determine if the problem is following the BD Does rolling appear when the BD is connected to another TV NO YES Connect the BD to anot...

Page 20: ...ner is available at any local electronics retailer Does shaking appear when watching a TV program NO YES Shaking appearing when watching a TV program indicates n issue with the display If the TV program is fine then connect the BD to another input on the display to determine if the problem is following the BD Does shaking appear when the BD is connected to another TV NO YES Connect the BD to anoth...

Page 21: ...s available at any local electronics retailer Does blurriness appear when watching a TV program NO YES Blurriness appearing when watching a TV program indicates an issue with the display If the TV program is fine then connect the BD to another input on the display to determine if the problem is following the BD Does blurriness appear when the BD is connected to another TV NO YES Connect the BD to ...

Page 22: ... TV is on the correct input Turn TV off then on to determine input Video when using composite or component DVI when using DVI and HDMI when using HDMI Is the customer able to watch TV programming NO YES If the customer is not able to watch television then he may have a problem with his television especially if the cable signal comes through on a different input If the customer can not get a TV pro...

Page 23: ...ine input Video when using composite or component DVI when using DVI and HDMI when using HDMI Is the customer able to watch TV programming NO YES If the customer is not able to watch television then he may have a problem with his television especially if the cable signal comes through on a different input If the customer can not get a TV program then he still may have a problem with the particular...

Page 24: ... when using composite or component DVI when using DVI and HDMI when using HDMI Is the customer able to watch TV programming NO YES If the customer is not able to watch television then he may have a problem with his television especially if the cable signal comes through on a different input If the customer can not get a TV program then he still may have a problem with the particular input on his T...

Page 25: ...ut Video when using composite or component DVI when using DVI and HDMI when using HDMI Is the customer able to watch TV programming NO YES If the customer is not able to watch television then he may have a problem with his television especially if the cable signal comes through on a different input If the customer can not get a TV program then he still may have a problem with the particular input ...

Page 26: ... menu Is the display HDCP compliant NO YES Make sure the display is HDCP compliant when using a DVI or HDMI connection A lack of HDCP compliancy on the display may cause an invalid format or format not supported message to appear It can also cause a copy protection OSD to appear Has the customer tried the device on another display NO YES Ask the customer to connect the device to another display If...

Page 27: ...e discs in the owners manual Multiple discs displaying the problem indicates a problem with the BD player Does color appear when watching a TV program NO YES If the cable or satellite programming is connected through another input and the customer does not get color the customer has a problem with his television If a TV program does have the color the problem may be the BD player the cables being ...

Page 28: ...color fine when watching a TV program NO YES If the cable or satellite programming is connected through another input and the customer does not get color the customer has a problem with his television If a TV program does have the color the problem may be the BD player the cables being used or the TV itself Is color fine when the BD is connected to another TV NO YES Connect the BD to another TV an...

Page 29: ...ltiple discs could indicate a lens cleaner is needed The customer can purchase a lens cleaner at any electronics retailer Problem occur when watching TV program NO YES No audio from a TV program on a different channel or input means there is a problem with the television If a TV program does have the audio the problem may be the BD player the cables being used or the TV itself Does the problem occ...

Page 30: ...e a lens cleaner at any electronics retailer Problem occur when watching TV program NO YES Distorted audio from a TV program on a different channel or input means there is a problem with the television If a TV program does have the audio the problem may be the BD player the cables being used or the TV itself Does the problem occur when DVD is connected to another TV NO YES Audio is fine when the B...

Page 31: ...ied multiple tapes and discs NO YES YES If the issue only shows up on one disc then the problem is with that disc Have the customer try multiple tapes or discs If the issue happens on multiple discs and tapes then ask the customer to try a lens or a head cleaner Has the customer connected to another TV NO Ask the customer to connect the product to another TV If the issue persists try another set o...

Page 32: ...ged into a surge protector NO YES Make sure the surge protector is plugged into a wall outlet Also make sure the surge protector is turned on or does not need to be reset due to a recent surge Does the unit work when plugged into another outlet NO YES Test the unit in another outlet If the unit works then the problem is the outlet where the unit was connected If the issue is the BD then set up ser...

Page 33: ...the customer initialized a DVD RW in VR mode make sure the owners manual has the RW logo to show compatibility for the VR format Did the customer burn the disc in a computer NO YES Make sure the customer burned a compatible format such as VCD SVCD or DivX Make sure the file meets the specifications required for the player to play the disc Check the owners manual for specifications Disc may still n...

Page 34: ...hen reset the unit by unplugging it for 15 to 30 seconds If the unit does not respond after the reset arrange for service on the BD Does the open close button on the unit work NO YES Press the open close button on the unit If the disc ejects troubleshoot the remote using the Remote Control not working call flow Has the customer reset the unit NO Ask the customer to reset the unit by unplugging the...

Page 35: ...teries are new and fresh The batteries do not need to come from a spare battery drawer Do not mix used and new batteries Is the remote working at all NO YES YES If the remote does not work anything then walk the customer through a remote drain Remove the batteries from the remote control Then press and hold any button down for a minute This will drain the power out of the remote and reset it Unive...

Page 36: ...tomer initialized a DVD RW in VR mode make sure the owners manual has the RW logo to show compatibility for the VR format Did the customer burn the disc in a computer NO YES Make sure the customer burned a compatible format such as VCD SVCD or DivX Make sure the file meets the specifications required for the player to play the disc Check the owners manual for specifications Disc may still not be c...

Page 37: ...er initialized a DVD RW in VR mode make sure the owners manual has the RW logo to show compatibility for the VR format Did the customer burn the disc in a computer NO YES Make sure the customer burned a compatible format such as VCD SVCD or DivX Make sure the file meets the specifications required for the player to play the disc Check the owners manual for specifications Disc may still not be comp...

Page 38: ...ion code of the DVD disc is not 1 then the DVD disc will not play on a player sold in the US The player can play only DVD discs labeled same as the rear of the unit Is the disc locking up on a disclaimer screen when the customer presses play NO The disc locking up on a feature needs to be reported to Q E See instructions on reporting problems to Q E For a work around the problem advise the custome...

Page 39: ...re the BD player aspect ratio is set to the appropriate setting depending on the aspect ratio of the TV If the customer chose 4 3 Letterbox then bars will appear on the top and bottom The customer can choose the panscan setting to get rid of the bars What is the resolution of the BD player set at NO YES Try changing the resolution to 480i p 720i p 1080i and 1080p resolution require a widescreen as...

Page 40: ...Copy protected discs will not be up converted when HDCP is not found on the input or output Is the customer using an HDMI or DVI cable NO YES Regular discs can be converted to 1080p just through the HDMI output The TV must have HDCP compliancy on the HDMI input The display has to accept the resolution 480i p 720i p 1080i or 1080p Is the customer using an HDMI to DVI cable NO YES Some movie compani...

Page 41: ... When a customer switches from one disc to another the lens have to be changed what causes the delay BLU RAY require different lasers to read the discs Why does it take so long to boot my BD NO The booting times for the BD is under 15 seconds When the set is booted it takes a little long time to loading the OS program 6 2 Booting Times ...

Page 42: ... 1 1 1 Solution Replace F901 BD901 on SMPS board 1 1 2 How to troubleshoot Countermeasure 1 Look at the physical of fuse F901 2 Check the bridge diode BD901 1 1 3 Service hint Any picture Remark F901 BD901 SMPS board top view Fuse F901 Can look at physical condition No Power BD901 is Defective No Power F901 is Defective ...

Page 43: ...Case 1 FLD abnormal Check D926 D927 ZD951 ZD952 FR952 and replace it Case 2 6 VA abnormal Check D924 and replace it Case 3 14 VA abnormal Check D925 and replace it Case 4 3 8 VA abnormal Check D922 D923 and replace it Case 5 All voltage abnormal Check IC901 and replace it 1 2 3 Service hint Any picture Remark SMPS board top view SMPS board bottom view Case 1 D927 D926 ZD951 ZD952 Case 5 IC901 Case...

Page 44: ...00 No 3 8 VA 3 3 VA 2 1 1 Solution Replace IC100 on MAIN board 2 1 2 How to troubleshoot Countermeasure 1 Please check 3 8 VA of IC100 2 If 3 8 VA is abnormal please check SMPS 3 8 VA and D101 diode 3 If 3 8 VA is OK but 3 3 VA is abnormal replace D101 diode 4 If 3 8 VA 3 3 VA is OK check X100 crystal signal 2 1 3 Service hint Any picture Remark IC100 X100 D101 MAIN board top view MAIN board botto...

Page 45: ...ystem 3 3 V No System 3 3 V 2 2 1 Solution Replace IC155 on MAIN board 2 2 2 How to troubleshoot Countermeasure 1 Please check 3 8 VA of IC155 pin3 VIN 2 If 3 8 VA is abnormal please check SMPS 3 8 VA 3 If 3 8 VA is OK but 3 3 VA is abnormal at the IC155 pin6 VOUT replace IC155 2 2 3 Service hint Any picture Remark IC155 MAIN board top view ...

Page 46: ...ease check 14 VA from SMPS 3 If VCC input IC150 there are 14 VA signal First of all check the pin15 is high and if it s high check resister value and if there s no defective component please replace IC150 4 After changing it if the set is still not booting Check 1 2 V 3 3 V is normal please refer to other sections of this guide Check crystal X501 refer to item 2 6 Check eMMC flash IC IC506 refer t...

Page 47: ...lease check 14 VA from SMPS 3 If VCC input IC150 there are 14 VA signal First of all check the pin6 is high and if it s high check resister value and if there s no defective component please replace IC150 4 After changing it if the set is still not booting Check 1 5 V 3 3 V is normal please refer to other sections of this guide Check crystal X501 refer to item 2 6 Check eMMC flash IC IC506 refer t...

Page 48: ...check 3 8 VA from SMPS 3 If VCC input IC155 there are 3 8 VA signal First of all check the pin6 is high and if it s high check resister value and if there s no defective component please replace IC155 4 After changing it if the set is still not booting Check 1 2 V 1 5 V is normal please refer to other sections of this guide Check crystal X501 refer to item 2 6 Check eMMC flash IC IC506 refer to it...

Page 49: ... to troubleshoot Countermeasure 1 Please check the soldering status of 27 MHz crystal X501 2 Please check the frequency of 27 MHz crystal X501 3 If the crystal doesn t oscillate replace X501 4 After changing it if the set is still not booting Check eMMC flash IC IC506 refer to item 2 7 Check DDR IC IC503 IC504 IC505 refer to item 2 8 Check MT8580 IC IC501 refer to item 2 9 2 6 3 Service hint Any p...

Page 50: ...How to troubleshoot Countermeasure 1 Please check physical status of IC506 on your eyes 2 Check the VCC 3 3 V of IC506 and if it s normal please replace IC506 Please make sure IC506 has proper program 3 After changing it if the set is still not booting Check DDR IC IC503 IC504 IC505 refer to item 2 8 Check MT8580 IC IC501 refer to item 2 9 2 7 3 Service hint Any picture Remark IC506 MAIN board top...

Page 51: ...ease check 0 75V of DDR3_VREF between C5D5 and C5D6 Please check 0 75V of DDR3_VREF between C5D9 and C5E0 Please check 1 5V of IC503 IC504 IC505 2 If it doesn t work even though IC150 IC155 are no problem IC503 IC504 IC505 DDR memory could have problem 3 After changing it if the set is still not booting Check MT8580 IC IC501 refer to item 2 9 Check MAIN board refer to item 2 10 2 8 3 Service hint ...

Page 52: ...re 1 Please check 1 2 V of C528 on MAIN board Please check 3 3 V of C501 on MAIN board Please check 1 5 V of C511 on MAIN board 2 If it doesn t work even though IC150 IC155 are no problem IC501 MT8580 could have problem 3 After changing it if the set is still no booting check MAIN board refer to item 2 10 2 9 3 Service hint Any picture Remark C528 1 2 V C511 1 5 V C501 3 3 V IC501 MAIN board botto...

Page 53: ...ow to troubleshoot Countermeasure 1 Please remove IC501 and IC502 IC503 IC504 IC505 IC506 and then check the Impedance between each signal DATA ADDRESS and so on 2 If there is some Impedance a few Ω or infinite Ω especially power source trace PCB via might be broken You d better replace MAIN board 2 10 3 Service hint Any picture Remark IC501 IC503 IC504 IC506 IC505 MAIN board top view ...

Page 54: ...How to troubleshoot Countermeasure 1 Check you internet connection Make sure it connect properly to modem or router 2 If internet connection OK please check the Ethernet jack JK804 3 If there is soldering problem please re soldering pin JK804 4 If after re soldering problem still occurs replace JK804 5 If problem still occurs after replace JK804 Check MT8580 IC IC501 Refer to item 2 9 3 1 3 Servic...

Page 55: ... troubleshoot Countermeasure 1 Check you internet connection Make sure it connect properly to modem or router 2 If internet connection OK please check the CN801 3 If there is soldering problem please re soldering pin CN801 4 If after re soldering problem still occurs replace Wi Fi module 5 If problem still occurs after replace Wi Fi module Check MT8580 IC IC501 Refer to item 2 9 4 1 3 Service hint...

Page 56: ...t is OK 5 1 JK802 HDMI JACK 5 1 1 Solution Replace JK802 HDMI Jack 5 1 2 How to troubleshoot Countermeasure 1 Check JK802 pin soldering 2 If there is short soldering on pin JK802 re soldering pin JK802 3 If problem still occurs check HDMI data If all data OK replace JK802 If data NG check set on BD mode Replace IC501 5 1 3 Service hint Any picture Remark HDMI OUT HDMI IN MAIN board top view ...

Page 57: ...roubleshoot Countermeasure 1 Check IC602 pin soldering 2 If there is short soldering on pin IC602 re soldering pin IC602 3 If problem still occurs check AMP IC IC700 IC701 IC702 Check IC700 IC701 IC702 pin soldering If soldering ok check the AMP heat sink Replace IC700 IC701 IC702 6 1 3 Service hint Any picture Remark AMP heat sink view IC602 PWM IC AMP IC AMP board top view ...

Page 58: ...2 If there is short soldering on CN202 re soldering CN202 3 If problem still occurs check 5 V CN202 pin4 pin8 If no output check IC151 on MAIN board If OK check USB1 USB1 signal If there is no signal replace IC501 7 1 3 Service hint Any picture Remark CN202 pin4 pin8 TP211 5 V pin10 TP201 USB1 Pin11 TP202 USB1 CN202 pin4 pin8 TP211 5 V pin10 TP201 USB1 Pin11 TP202 USB1 JACK Without Mic board botto...

Page 59: ...ace F901 same fuse YES YES NO Is TH901 normal Is BD901 normal Is the VCC 11 V 25 V supplied to IC901 pin4 Replace TH901 Replace BD901 Is D922 D923 normal Check or replace D922 D923 YES YES YES NO NO NO Power line of MAIN PCB is short 1 SYSTEM POWER SUPPLY ON SMPS BOARD ...

Page 60: ...6 VA Is F901 normal Replace F901 same fuse YES YES NO Is TH901 normal Is BD901 normal Is the VCC 11 V 25 V supplied to IC901 pin4 Replace TH901 Replace BD901 Is D924 normal Check or replace D924 YES YES YES NO NO NO Power line of MAIN PCB is short ...

Page 61: ...14 VA Is F901 normal Replace F901 same fuse YES YES NO Is TH901 normal Is BD901 normal Is the VCC 11 V 25 V supplied to IC901 pin4 Replace TH901 Replace BD901 Is D925 normal Check or replace D925 YES YES YES NO NO NO Power line of MAIN PCB is short ...

Page 62: ...OM IC YES YES NO Is the VCC 11 V 25 V supplied to IC902 pin7 Is Q901 normal Is IC902 normal Is D928 normal Is Q910 normal Replace Q901 Replace IC902 Replace D928 Check or replace Q910 YES YES YES YES NO NO NO NO Power line of MAIN or AMP PCB is short 2 AMP POWER SUPPLY ON SMPS BOARD ...

Page 63: ...ut supply 3 8 VA Check 3 8 VA on MAIN board YES YES NO Check D101 and replace No 3 3 V Is the VCC supplied to IC155 pin3 Check 3 8 VA on SMPS board YES YES NO Is there signal at IC155 pin2 Check IC100 pin58 DCDC33_CTRL Check IC155 and replace YES NO 3 POWER SUPPLY ON MAIN BOARD ...

Page 64: ...IC153 pin2 Check 14 VA on SMPS board YES YES NO Is there signal at IC153 pin1 Check IC100 pin68 LDO_CTRL Check IC153 and replace YES NO No 9 5 V A9P5V Is the VCC supplied to IC305 pin3 Check IC153 pin4 12V_LOADER YES YES NO Check IC305 and replace Is there signal at IC305 pin1 YES ...

Page 65: ...s the VCC supplied to IC406 pin2 Check VCC_3 7VA on D101 YES YES NO Check IC406 and replace No 5 V 5V_LOADER Is the VCC supplied to IC302 pin2 Check 6 VA on SMPS board YES YES NO Is there signal at IC302 pin1 Check IC100 pin68 LDO_CTRL Check IC302 and replace YES NO ...

Page 66: ...he VCC supplied to IC405 pin3 Check IC155 pin6 VCC_3V3 YES YES NO Check IC405 and replace No 5V_SYSTEM VCC_5V Is the VCC supplied to IC152 pin2 Check 6 VA on SMPS board YES YES NO Is there signal at IC152 pin1 Check IC100 pin68 LDO_CTRL Check IC152 and replace YES NO ...

Page 67: ... 6 VA on SMPS board YES YES NO Is there signal at IC154 pin1 Check IC100 pin68 LDO_CTRL Check IC154 and replace YES NO No 5V_USB 5V_IPOD Is the VCC supplied to IC151 pin14 Check 14 VA on SMPS board YES YES NO Is there signal at IC151 pin16 Check IC100 pin68 LDO_CTRL Check IC151 and replace YES NO ...

Page 68: ... VA on SMPS board YES YES NO Is there signal at IC150 pin15 Check IC100 pin59 DCDC15_CTRL Check IC150 and replace YES NO No 1 2 V Is the VCC supplied to IC150 pin8 Check 14 VA on SMPS board YES YES NO Is there signal at IC150 pin6 Check IC100 pin60 DCDC12_CTRL Check IC150 and replace YES NO ...

Page 69: ...eck D101 and 3 8 VA on SMPS board Replace X501 Stand by LED OK 3 3 VA 3 8 VA OK X501 27 000 MHz OK NO NO NO YES Check IC100 IC150 IC155 and SMPS board Check CN301 pin11 Check IC3T1 IC3T1 3 3 VA OK IC100 3 3 VA IC150 1 5 V 1 2 V IC155 3 3 V OK 3 3 VA OK NO NO NO YES YES YES YES 4A Replace IC501 MT8580 4B ...

Page 70: ...able connect LG Logo display on monitor OK LG Logo display on monitor OK 4A IC100 3 3 VA IC150 1 5 V 1 2 V IC155 3 3 V OK Display cable connection OK NO NO NO NO YES YES YES YES YES Replace X501 Replace IC506 eMMC Flash Replace IC501 MT8580 or IC150 IC155 X501 27 000 MHz OK Signal eMMC_CMD eMMC_CLK OK NO NO YES ...

Page 71: ...VA OK Check H_5VA IC156 YES YES YES YES NO IC101 HPD_DET HDMI_SDA HDMI_SCL CEC_RX TX EDID_SW OK JK802 pin19 HP_DET about 3 3 V OK Is there signal on pin1 3 4 6 7 9 10 12 Check IC100 Check hot plug detect signal from TV Check IC501 MT8580 VCC or replace IC501 MT8580 HDMI output OK YES NO NO NO ...

Page 72: ...supply 3 8 VA and pin1 YES YES YES YES NO X650 24 576 MHz OK IC700 IC701 IC702 36 V 12 V OK IC602 pin19 20 21 22 23 I2C data OK CN600 pin11 20 21 22 24 OK Replace X650 Check SMPS 36 V and IC600 12 V Check IC100 and IC401 pin120 121 122 123 126 127 Check IC100 Replace IC700 IC701 IC702 YES YES NO NO NO NO ...

Page 73: ...2 58 WAVEFORMS 1 SYSTEM PART 1 MPEG CRYSTAL 27 MHZ IC501 MT8580 X TAL 27 MHz 1 1 ...

Page 74: ...2 59 2 SYSTEM PART 2 DDR3 MEMORY MT8580 BA0 MT8580 WE MT8580 CAS MT8580 CK 2 5 4 3 2 3 4 5 ...

Page 75: ...2 60 3 SYSTEM PART 3 eMMC FLASH MEMORY 7 8 6 6 7 8 ...

Page 76: ...2 61 4 AUDIO PART 1 S PDIF MT8580_AUDIO_SPDIF IN 9 9 ...

Page 77: ...2 62 5 AUDIO PART 2 I2S tjsr ijr syjr kh hW 10 11 12 13 10 11 12 13 ...

Page 78: ...2 63 6 HDMI PART H_SDA H_SCL HDMI_CLK_N HDMI_0_N 14 15 16 17 14 15 16 17 ...

Page 79: ...2 64 MEMO ...

Page 80: ...N105 HARNESS FFC CN401 CN600 18P FFC CABLE MAIN JACK CN202 CN151 BT CN252 CN802 Wi Fi 5P HARNESS CABLE MAIN Wi Fi 24P FFC CABLE MAIN AMP 18P FFC CABLE MAIN FRONT 8PIN FFC CABLE MAIN BT 14P HARNESS CABLE MAIN SMPS TOUCH CN302 CN3T1 6P FFC CABLE FRONT TOUCH WIRING DIAGRAM ...

Page 81: ... PCM1808 MIC Optical USB Ipod eMMC 2 GB CP Chip DSP DA808 HDMIIN 1 HDMIIN 2 HDMII OUT MICOM UPD78F1164 AMP Board AMP TAS5624Ý3 PWM PS9860 24 576 MHz Wireless Board Wireless TX Module Front Board VFD MC3401 TOUCH CORE380 K_D0 D0 MCLK BCK LRCK D0 1 2 3 4 SDRAM 16 MB Serial F 16 MB 24 576 MHz A_BCK A_LRCK A_D0 1 2 3 4 TMDS DDC CEC2 HPD PWR5V TMDS DDC CECHPD UART SPI E2P PWM _RST WL_CLK VFD_ CLK 1 2 V...

Page 82: ...VA No Power D921 D925 are Defective SMPS EAX63689122 Rev1 1 1 2013 01 07 CIRCUIT DIAGRAMS 1 SMPS CIRCUIT DIAGRAM IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITH OUT PERMISSION FROM THE LG CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT SPECIAL COMPONENTS ARE SH...

Page 83: ...2 72 2 71 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T MICOM EAX65047101 1 Rev2 0 10 2013 01 07 2 MAIN MICOM CIRCUIT DIAGRAM ...

Page 84: ...2 74 2 73 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T POWER EAX65047101 2 Rev2 0 10 2013 01 07 3 MAIN POWER CIRCUIT DIAGRAM ...

Page 85: ...2 76 2 75 1 10 11 12 13 WAVEFORM NUMBER A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T MPEG EAX65047101 3 Rev2 0 10 2013 01 07 4 MAIN MPEG CIRCUIT DIAGRAM ...

Page 86: ...2 78 2 77 7 8 6 2 5 4 3 WAVEFORM NUMBER A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T MEMORY EAX65047101 4 Rev2 0 10 2013 01 07 5 MAIN MEMORY CIRCUIT DIAGRAM ...

Page 87: ...2 80 2 79 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T F E EAX65047101 5 Rev2 0 10 2013 01 07 6 MAIN FRONT END CIRCUIT DIAGRAM ...

Page 88: ...2 82 2 81 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T DSP EAX65047101 6 Rev2 0 10 2013 01 07 7 MAIN DSP CIRCUIT DIAGRAM ...

Page 89: ...2 84 2 83 9 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ADC MIC EAX65047101 7 Rev2 0 10 2013 01 07 WAVEFORM NUMBER 8 MAIN ADC MIC CIRCUIT DIAGRAM ...

Page 90: ...2 86 2 85 14 15 16 17 WAVEFORM NUMBER A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T I O EAX65047101 8 Rev2 0 10 2013 01 07 9 MAIN I O CIRCUIT DIAGRAM ...

Page 91: ...2 88 2 87 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T PWM EAX65033801 1 Rev1 6 6 2012 12 11 10 AMP PWM CIRCUIT DIAGRAM ...

Page 92: ...2 90 2 89 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T AMP EAX65033801 2 Rev1 6 6 2012 12 11 11 AMP AMP CIRCUIT DIAGRAM ...

Page 93: ... 10 11 12 B C D E F G H I J K L M N O P Q R S T JACK USB PORTABLE MIC EAX65038601 Rev1 3 3 2012 12 11 JACK USB PORTABLE MIC EAX65038601 Rev1 3 3 2012 12 11 12 JACK CIRCUIT DIAGRAM OPTIONAL PART 12 1 USB PORTABLE MIC CIRCUIT DIAGRAM ...

Page 94: ...2 94 2 93 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T JACK USB PORTABLE EAX65038701 Rev1 5 5 2012 12 11 JACK CIRCUIT DIAGRAM OPTIONAL PART 12 2 USB PORTABLE CIRCUIT DIAGRAM ...

Page 95: ...2 96 2 95 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T FRONT EAX65053001 Rev1 4 4 2012 12 11 13 FRONT CIRCUIT DIAGRAM ...

Page 96: ...2 98 2 97 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T TOUCH EAX64992201 Rev1 5 5 2012 12 11 14 TOUCH CIRCUIT DIAGRAM ...

Page 97: ...1 0 3 491 0 CA151 100uF 16V 5 7 0 5 7 0 CA154 100uF 16V 12 07 0 0 0 CA201 100uF 16V 5 11 0 0 0 CA202 100uF 16V 3 362 0 0 0 CA302 100uF 16V 5 7 0 5 7 0 CA304 100uF 16V 5 03 0 0 0 C320 47uF 16V 12 08 0 0 0 C436 47uF 16V 2 99 0 0 0 C2M4 22uF 16V 2 036 0 0 0 Pin No Pin Name Spec V Stand by Mode EE Mode V IC305 AZ1117BH 4 VOUT 9 5 0 9 64 3 INPUT 12 0 12 08 IC401 DSP 87 DVDD 3 3 0 3 341 77 CVDD 1 2 0 1 ...

Page 98: ...2 102 2 101 PRINTED CIRCUIT BOARD DIAGRAMS 1 SMPS P C BOARD TOP VIEW BOTTOM VIEW NOTE Warning Parts that are critical with respect to risk of fire or electrical shock ...

Page 99: ...2 104 2 103 2 MAIN P C BOARD TOP VIEW ...

Page 100: ...2 106 2 105 MAIN P C BOARD BOTTOM VIEW ...

Page 101: ...2 108 2 107 3 AMP P C BOARD TOP VIEW BOTTOM VIEW ...

Page 102: ...2 110 2 109 4 JACK P C BOARD OPTIONAL PART 4 1 USB PORTABLE MIC P C BOARD TOP VIEW BOTTOM VIEW 4 2 USB PORTABLE P C BOARD TOP VIEW BOTTOM VIEW ...

Page 103: ...2 112 2 111 5 FRONT P C BOARD 6 TOUCH P C BOARD TOP VIEW TOP VIEW BOTTOM VIEW BOTTOM VIEW ...

Page 104: ...XPLODED VIEWS 3 3 1 CABINET AND MAIN FRAME SECTION 3 3 2 DECK MECHANISM SECTION 3 5 3 PACKING ACCESSORY SECTION 3 7 4 SPEAKER SECTION 3 8 4 1 CENTER SPEAKER 3 8 4 2 FRONT REAR SPEAKER 3 9 4 3 PASSIVE SUBWOOFER 3 10 5 WIRELESS RECEIVER SECTION 3 11 ...

Page 105: ...3 2 MEMO ...

Page 106: ...462 462 462 462 CN901 A45 JACK A43 H K G I 275 AMP CABLE4 281 282 283 A53 269 462 276 276 H 300 J Wi Fi A51 CABLE5 K BT A52 CABLE6 OPTIONAL PART EXPLODED VIEWS 1 CABINET AND MAIN FRAME SECTION NOTES THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE ...

Page 107: ...437 1024 1024 1015 1008 1438 1006 1437 1437 1024 1437 1021 1024 1031 1030 1013 1014 1012 1009 1016 1017 1007 1011 1020 1002 1004 1005 1001 1003 1435 A001 A004 1436 A002 A003 A005 2 DECK MECHANISM SECTION MEMO ...

Page 108: ...Speaker cables WIRE80 WIRE81 White Front left Red Front right WIRE70 WIRE90 WIRE60 Green Center Orange Sub woofer Blue Rear left WIRE61 Grey Rear right 801 Owner s manual 808 Batteries 825 FM antenna 828 NFC Tag On sticker 832 CD title 840 Wireless TX dongle 900 Remote control ...

Page 109: ...4 SPEAKER SECTION 4 1 CENTER SPEAKER A700 ...

Page 110: ...4 2 FRONT REAR SPEAKER A800B A800T A800M A800 850 850 ...

Page 111: ...4 3 PASSIVE SUBWOOFER A900 ...

Page 112: ...AMP A330 392 392 392 391 392 WIRELESS 390L A81A RCN301 392 A81S A81M 390R 392 B B B C A SMPS 393 C 5 WIRELESS RECEIVER SECTION ...

Page 113: ...MEMO ...

Page 114: ...ALL CD DISC READING ERROR 4 4 HOW TO USE THE SA RESET FUNCTION 4 5 1 PURPOSE 4 5 2 REQUIRED SA RESET 4 5 3 SA RESET PROCEDURE 4 5 MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION 4 7 1 IC501 MT8580 4 7 2 IC301 TPIC2050 9CH MOTOR DRIVE WITH 3 BEAM LASER DIODE DRIVER 4 10 3 PICK UP CONNECTOR TERMINAL PIN ASSIGNMENTS 4 12 BLOCK DIAGRAM 4 13 ...

Page 115: ...al set can not recognize BD disc 1 1 Component 1 MD Traverse Assembly 2 IC301 TPIC2050 CN303 1 2 How to troubleshoot Countermeasure 1 Check MD s cable s status Pick up Sled Spindle Tray Cable 2 Check power source of IC301 pin42 12 V pin24 9 5 V pin34 5 V 3 Check pin39 MDI_BD of CN303 during BD single layer playback pin39 180 mV 1 3 Service hint Any picture Remark ...

Page 116: ...abnormal set can not recognize DVD disc 2 1 Component 1 MD Traverse Assembly 2 IC301 TPIC2050 CN303 2 2 How to troubleshoot Countermeasure 1 Check MD s cable s status Pick up Sled Spindle Tray Cable 2 Check power source of IC301 pin42 12 V pin24 9 5 V pin34 5 V 3 Check pin40 DVD_VR of CN303 during DVD playback pin40 180 mV 2 3 Service hint Any picture Remark ...

Page 117: ...abnormal set can not recognize CD disc 3 1 Component 1 MD Traverse Assembly 2 IC301 TPIC2050 CN303 3 2 How to troubleshoot Countermeasure 1 Check MD s cable s status Pick up Sled Spindle Tray Cable 2 Check power source of IC301 pin42 12 V pin24 9 5 V pin34 5 V 3 Check pin41 CD_VR of CN303 during DVD playback pin41 180 mV 3 3 Service hint Any picture Remark ...

Page 118: ...anging Traverse After changing Main Board Assembly After changing Main Board Flash IC 3 SA RESET PROCEDURE HOW TO USE THE SA RESET FUNCTION 1 Power on the set then mode is in home menu 2 Press Setup 3 Under DISPLAY highlighted condition press 5 1 7 7 7 7 7 Enter on the remote controller to display special mode Move to the SA IOP Reset and click G ...

Page 119: ...rt BD ROM SL Disc Tray is opened automatically 5 If the disc is inserted you will see Wait 6 If SA Adjustment is finished tray is opened auto matically 7 Press stop key twice to escape this special mode Reference ...

Page 120: ...ve low The pin is spike free at power on stage Alternate function General IO C9 FEFG 3 3V LVTTL I O 5V tolerance 6 mA PDR 75K pull up 3 3 V Motor Hall sensor input The pin is spike free at power on stage B11 FEFMO Analog Output Feed motor 1 control DAC output A12 FEFMO2 Analog Output Feed motor 2 control DAC output B12 FEFMO3 Analog I O Feed motor 3 control DAC output Alternative Function Auxiliar...

Page 121: ...FEGIO4 Analog Output Read gain switch 4 Alternate function 1 LCD serial interface command enable 2 LCD_DRV Square wave output for LCD control 3 Internal monitored signal output 4 General IO E13 FEGIO5 Analog Output Read gain switch 5 Alternate function 1 SIDM 2 LCD serial interface command enable 3 Internal monitored signal output 4 General IO D9 FEGIO6 Analog Output Read gain switch 6 The pin is ...

Page 122: ...ernal monitored signal output General output B17 MPXOUT3 Analog Output Multiplexer Output 3 for Signal Monitoring The pin is not allowed to pull up in circuit layout Alternate function Internal monitored signal output General output D14 FEOSCEN 3 3V LVTTL I O 5V tolerance Slow slew 2 4 6 8 mA PDR 75K pull up 3 3 V High frequency modulation enable signal output or LDD serial interface CLK or 12C SC...

Page 123: ...D END detection STEP END detection DAC PWM DAC PWM DAC PWM DAC PWM DAC PWM DAC PWM DAC PWM P5V P5V P12V int 3 3V Regulator A5V P5V int 10V Regulator Analog 5V DAC P12V SLD ENA TLT ENA DIFF TLT TEMPMON_ENA TRK ENA STP ENA SPM ENA power monitor SIOV 200k 200k SIOV 33k 19V LOAD ENA F B F B F B F B F B SLD ENA TPIC2050 On chip thermometer pre driver power FET pre driver power FET pre driver power FET ...

Page 124: ...l 27 ILDD_CD OUT Laser diode for CD output terminal 28 CP5V MISC The capacitance connection terminal for control system power supply 0 1uF or lager decoupling capacitor should be connected 29 LOAD_P OUT Load positive output terminal 30 LOAD_N OUT Load negative output terminal 31 P5V12L PS The power supply terminal 5V or 12V for Load driver output stages 32 TEST2 MISC Test pin Should be open 33 TES...

Page 125: ...F BD DVD CD RF 24 RF BD DVD CD RF 25 SW2 BD PD Gain2 26 SW1 BD PD Gain1 27 VREF_2 1V PDIC Reference 2 1V 28 VCC_PD 5V PDIC Power 5V 29 GND_PD PDIC GND 30 SW DVD CD Sleep Selection 31 GND LD HFM GND LD HFM IC Monitor 32 BD_LD LD Control BD 33 CD_LD LD Control CD 34 DVD_LD LD Control DVD 35 GND LD HFM GND 36 TEMP Thermistor 37 HFM_VCC 5V HFM VCC 38 CD DVD_MPD Monitor output DVD CD 39 BD_MPD Monitor ...

Page 126: ...13 BLOCK DIAGRAM OPU Ethernet 3 x USB 2 0 7 1 CH I2S audio 32 bit 32 bit 2 CH I2S audio S PDIF HDMI Component CVBS DVO OPTIONAL USB NAND Flash 1GB DDR3 Audio DAC Video Processor MT8580D A9 3D GPU Monitor ...

Page 127: ...4 14 MEMO ...

Page 128: ...3 1 NO POWER PROBLEM 5 3 2 NO SOUND 5 5 ELECTRICAL TROUBLESHOOTING GUIDE 5 8 1 POWER SUPPLY ON SMPS BOARD 5 8 2 NO PAIRING 5 9 3 NO SOUND 5 10 WAVEFORMS 5 11 WIRING DIAGRAM 5 13 BLOCK DIAGRAM 5 15 CIRCUIT DIAGRAMS 5 17 1 SMPS CIRCUIT DIAGRAM 5 17 2 AMP 1 CIRCUIT DIAGRAM 5 19 3 AMP 2 CIRCUIT DIAGRAM 5 21 PRINTED CIRCUIT BOARD DIAGRAMS 5 23 1 SMPS P C BOARD 5 23 2 AMP P C BOARD 5 25 ...

Page 129: ...on RX for 5 seconds LED blinks yellow and red alternately to 0 5 second intervals Condition 1 Wireless module update must be performed without interference 2 You must update after switching TEST BAND 3 After wireless module update you must perform TX and RX FACTORY to pair them 2 WIRELESS TX MODULE UPDATE METHOD Update must be performed after turning off RX 1 Insert TX module to slot You must turn...

Page 130: ...n Replace F901 BD901 on SMPS board 1 1 2 How to troubleshoot Countermeasure 1 Look at the physical of fuse F901 2 Check the bridge diode BD901 1 1 3 Service hint Any picture Remark SMPS board top view Fuse F901 Can look at physical condition BD901 F901 No Power BD901 is Defective No Power D911 is Defective No Power F901 is Defective ...

Page 131: ...DD 36 V abnormal 1 2 1 Solution Replace D951 IC901 1 2 2 How to troubleshoot Countermeasure Case 1 PVDD 36 V abnormal Check and replace it Case 2 If case 1 is not problem Check IC901 and replace it 1 1 3 Service hint Any picture Remark SMPS board top view D951 IC901 No Power D951 is Defective S W Error ...

Page 132: ...ireless rear speaker doesn t output a sound 2 1 SMPS Board No PVDD 2 1 1 Solution Check SMPS board No PVDD 2 1 2 How to troubleshoot Countermeasure YES Color is yellow Try to remate or reset Check SMPS board Check LED color of RX BOX YES NO ...

Page 133: ... speaker doesn t output a sound 2 2 RIC311 No 12 V 2 2 1 Solution Replace RIC311 No 12 V 2 2 2 How to troubleshoot Countermeasure AMP 12 V RIC311 pin2 output Check SMPS board Check 3 3 V YES NO 2 2 3 Service hint Any picture Remark AMP board top view ...

Page 134: ...3 RIC307 No 3 3 V 2 3 1 Solution Replace RIC307 No 3 3 V 2 3 2 How to troubleshoot Countermeasure 2 3 3 Service hint Any picture Remark AMP board top view YES Replace RIC307 Check module or connection NO Check SMPS board PVDD 5 VA RIC312 pin2 output PWM 3 3 V RIC307 pin4 output NO YES ...

Page 135: ...DD 36 V P CTRL Low PVDD 17 V YES YES NO Is the VCC 13 V 22 V supplied to IC901 pin4 Is IC901 normal Is D951 normal Check or replace Q901 ZD902 ZD901 P CTRL High VCC 20 V P CTRL Low VCC 12 V Replace IC901 Replace D951 YES YES YES NO NO NO Power line of Main or AMP PCB is short 1 POWER SUPPLY ON SMPS BOARD ...

Page 136: ...OTING GUIDE No pairing Check LED status Check SMPS board or module connection YES Red LED is turned on Yellow LED blinks irregularly Remate interference Turn off the equipment that gives interference NO NO YES YES 2 NO PAIRING ...

Page 137: ... RCN301 pin6 8 no output 3 3 V RIC307 pin4 no output Remate Check RIC311 Check SMPS board Check RIC307 Check sound status Check LED status Check module or connection NO NO NO YES YES YES YES YES Sound cut off irregularly interference Turn off the equipment that gives interference NO YES 3 NO SOUND ...

Page 138: ...5 11 RCN303 pin1 I2S LRCK 1 RCN303 pin3 I2S BCK 2 WAVEFORMS 1 AUDIO PART I2S RCN303 pin20 I2S Audio Data 3 3 1 2 ...

Page 139: ...5 12 MEMO ...

Page 140: ...WIRING DIAGRAM SMPS AMP Wireless Module 26pin 0 5mm FFC 10pin Harness RCN301 CN901 RCN303 5 13 5 14 ...

Page 141: ...P_CTRL WL_Ready SPI KIA7042 5VA P_SENSE TAS5624 TAS5624 एऀअऋछओࣶࣜࣜऎडझमछ ऀ एऀअऋछऔࣶࣜࣜऎडझम एऀअऋछकࣶࣜࣜओफफढडम RL_OUT RL_3D_OUT RR_OUT RR_OUT SW_OUT RR_3D_OUT Woofer SPK Connector RL RL RL_3D RR RR Woofer RR_3D XX OPTION RESISTOR Pairing S W CNT for Woofer ST BY PARING STATUS LED CNT LED CNT Rear SPK Connector DC DC 5VA ST BY PARING STATUS Woofer Only LDO 5VA 3 3V 5 15 5 16 ...

Page 142: ...OTICE WHEN SERVICING THIS CHASSIS UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITH OUT PERMISSION FROM THE LG CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED THIS WAY IM...

Page 143: ...5 19 5 20 2 AMP 1 CIRCUIT DIAGRAM 3 1 2 WAVEFORM NUMBER A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T W3 4 AMP EAX64464451 1 Rev1 6 6 2013 01 07 ...

Page 144: ...5 21 5 22 3 AMP 2 CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T W3 4 AMP EAX64464451 2 Rev1 6 6 2013 01 07 ...

Page 145: ...PRINTED CIRCUIT BOARD DIAGRAMS 1 SMPS P C BOARD TOP VIEW BOTTOM VIEW 5 23 5 24 NOTE Warning Parts that are critical with respect to risk of fire or electrical shock ...

Page 146: ...5 25 5 26 2 AMP P C BOARD TOP VIEW BOTTOM VIEW ...

Page 147: ...5 27 5 28 MEMO MEMO ...

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