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Copyright © 2014 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

LGE Internal Use Only

Standard Repair Process Detail Technical Manual

LED TV

Error
symptom
Content

Check and replace Link Cable (LVDS) and contact condition

Established
date

2014.07.07

A8/A9

Revised
date

B. Video error_Color error

1. Check and replace LVDS Cable.

2. Check LVDS connection condition.

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Содержание 32LB520B

Страница 1: ...LB520B CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL US Canada Mexico http aic lgservice com http eic lgservice com http biz lgservice com Internal Use Only CHASSIS 6M62N ...

Страница 2: ...ght LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 8 EXPLODED VIEW 13 14 SCHEMATIC CIRCUIT DIAGRAM ...

Страница 3: ...nals etc to be sure the 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 me...

Страница 4: ...ctrostatic 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 e...

Страница 5: ...al 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 and adjacent component...

Страница 6: ...ch parts are followed each drawing and specification by part number in accordance with BOM 5 e h T receiver must be operated for about 5minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety UL specification EMC FCC 4 Model General Specification No Item Remarks 1 Market US Canada Mexico 2 Broadcasting system 1 NTSC 2 AIR ATSC 3...

Страница 7: ...ion H freq kHz V freq kHz Pixel clock MHz Proposed 1 640 480 31 469 31 5 59 94 60 25 175 25 200 SDTV 480P 720 480 31 469 31 5 59 94 60 27 00 27 03 SDTV 480P 720 1440 480 15 73 15 75 59 94 60 27 00 27 028 SDTV 480i 2 3 4 1280 720 44 96 45 59 94 60 74 17 74 25 HDTV 720P 5 1920 1080 33 72 33 75 59 94 60 74 17 74 25 HDTV 1080I 6 7 8 1920 1080 26 97 27 23 97 24 74 17 74 25 HDTV 1080P 1920 1080 33 716 3...

Страница 8: ...Main PCB check process APC After Manual Insert executing APC Case1 Software version up 1 B S U y b W S g n i d a o l n w o d r e t f A TV set will reboot automatically 2 Push RESTORE key 3 Push Power on key 4 Function inspection 5 After function inspection Push RESTORE key Case2 Function check at the assembly line 1 When TV set is entering on the assembly line Push RESTORE key at first 2 Push Powe...

Страница 9: ... 10 Point WB 11 Test Pattern 12 EDID D L 13 Sub B C 14 Ext Input Adjust ADC Calibration ADC Comp 480i ADC Comp 1080p ADC Type NG NG Reset Begin adjust by pushing ADC ADJ key HD signal generator 100 color bar Note 1 The YPBPR Auto White Balance adjust AUTO ADC must be done on the product line 2 In YPBPR channel must adjust the SD and HD two modes 6 Click Read to load the main software for this TV s...

Страница 10: ...ers 5 Click the application button and begin to adjust automatically when finished it will display PASS STEPS 1 Connect Debug line 2 Connect HDMI port and input 80 full white signal 3 Calibrate the color analyzer CA310 Auto Adjust W B The spec of color temperature and coordinate Mode Color Temp Color coordinate Remark Cool C50 13 000 K X 0 271 0 002 Y 0 270 0 002 Test Signal Inner pattern for W B ...

Страница 11: ...Medium Warm For All model Fix the one of R G B gain and change the others For G FIX model Cool Mode 1 Fix the one of R G B gain to 192 default data and decrease the others If G gain is adjusted over 172 and R and B gain less than 192 Adjust is O K 2 If G gain is less than 172 Increase G gain by up to 172 and then increase R gain and G gain same amount of increasing G gain 3 If R gain or B gain is ...

Страница 12: ...POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller on 4 GND Test Auto If Test is failed Buzzer operates If Test is passed execute next process Hi pot test Remove A V CORD from A V JACK BOX 5 HI POT test Auto If Test is failed Buzzer operates If Test is passed GOOD Lamp on and move to next process automatically 5 5 3 Checkpo...

Страница 13: ...teristics 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 IMPORTANT SAFETY NOTICE 900 610 400 120 511 512 510 513 600 500 200 521 540...

Страница 14: ... 2 1 4 C6 0 1uF 0402 16V R26 220R 0402 5 470R 0402 5 C8 2 2nF 0402 16V H7 NC 1 C2 10uF 16V 0805 H4 NC 1 2 3 4 5 6 7 8 9 C26 2 2uF 0603 16V H5 NC 1 C1 0 1uF 0402 16V R10 9 1K 0402 1 C18 10uF 16V 0805 R7 20K 0402 5 C11 0 1uF 0402 16V NC L2 22uH_3A R1 100K 0402 5 C4 0 1uF 0402 16V C24 0 1uF 0402 16V R4 4 7K 0402 5 R14 20R 0402 5 C17 10uF 16V 0805 R24 22K 0402 5 Q1 3904 SOT 23 1 2 3 CA3 470uF 16V EC3 ...

Страница 15: ...IF_OUT HDMI0 HPDIN HDMI0 SCL HDMI0 SDA HDMI0 RX2N HDMI0 RX1P HDMI0 CLKP HDMI0 RX1N HDMI0 RX0P HDMI0 CLKN HDMI0 RX2P HDMI0 RX0N USB2_D USB2_D STANDBY AV_AUOUTR1 AV_AUOUTL1 Title Size Document Number Rev Date Sheet of MAIN CHIP 1 0 MSD3393 C 2 9 Wednesday June 11 2014 Title Size Document Number Rev Date Sheet of MAIN CHIP 1 0 MSD3393 C 2 9 Wednesday June 11 2014 Title Size Document Number Rev Date S...

Страница 16: ...RXEC B4_RXEC Title Size Document Number Rev Date Sheet of LVDS Interface 1 0 MSD3393 B 3 9 Wednesday June 11 2014 Title Size Document Number Rev Date Sheet of LVDS Interface 1 0 MSD3393 B 3 9 Wednesday June 11 2014 Title Size Document Number Rev Date Sheet of LVDS Interface 1 0 MSD3393 B 3 9 Wednesday June 11 2014 C82 0 1uF 0402 16V NC C84 0 1uF 0402 16V NC CA11 470uF 16V EC3 5 FB3 0R 1206 5 NC CN...

Страница 17: ...le Size Document Number Rev Date Sheet of Video Interface 1 0 MSD3393 B 4 9 Monday July 14 2014 Title Size Document Number Rev Date Sheet of Video Interface 1 0 MSD3393 B 4 9 Monday July 14 2014 R79 12K 0402 5 D14 ESD R84 75R 0402 5 NC RV1 ESD NC C88 0 1uF 0402 16V NC R199 0R 0402 5 R77 10K 0402 5 R82 100R 0402 5 WHITE RED P1 RCA 2P 1 2 3 4 P14 NC FIBER OPTIC GND 1 VCC 2 INPUT 3 R76 10K 0402 5 P2 ...

Страница 18: ...393 A 5 9 Wednesday May 14 2014 Title Size Document Number Rev Date Sheet of VGA Interface 1 0 MSD3393 A 5 9 Wednesday May 14 2014 Title Size Document Number Rev Date Sheet of VGA Interface 1 0 MSD3393 A 5 9 Wednesday May 14 2014 R92 10K 0402 5 R95 75R 0402 5 C89 220p 0402 16V R87 10K 0402 5 R89 12K 0402 5 R93 10K 0402 5 R96 75R 0402 5 R91 100R 0402 5 P4 VGA 15 PIN 1 6 2 7 3 8 4 9 5 11 12 13 14 15...

Страница 19: ...terface 1 0 MSD3393 A 6 9 Monday July 14 2014 Title v e R r e b m u N t n e m u c o D e z i S t e e h S e t a D of USB Interface 1 0 MSD3393 A 6 9 Monday July 14 2014 Title v e R r e b m u N t n e m u c o D e z i S t e e h S e t a D of USB Interface 1 0 MSD3393 A 6 9 Monday July 14 2014 P6 USB_A 1 1 2 2 3 3 4 4 5 5 6 6 R99 2 2R C92 2 2uF 0603 16V P7 USB_A 1 1 2 2 3 3 4 4 5 5 6 6 R98 2 2 0402 5 C93...

Страница 20: ... z i S t e e h S e t a D of HDMI Interface 1 0 MSD3393 D 7 9 Wednesday June 11 2014 Title v e R r e b m u N t n e m u c o D e z i S t e e h S e t a D of HDMI Interface 1 0 MSD3393 D 7 9 Wednesday June 11 2014 Title v e R r e b m u N t n e m u c o D e z i S t e e h S e t a D of HDMI Interface 1 0 MSD3393 D 7 9 Wednesday June 11 2014 R136 10K 0402 5 R146 100R 0402 5 R154 100 0402 5 R149 300K 0402 5 ...

Страница 21: ...100 120pF 0402 50V NC L28 270nH 0603 5 L27 600R 0402 500mA C173 91pF 0402 16V C166 1nF 0402 16V C132 100pF 0402 16V 1 2 3 4 5 6 7 8 10 12 GND RF1 GND GND RF2 GND GND RFC GND VDD C1 C2 11 9 U9 PE42750DS NC R205 3 3R 0402 1 C183 180pF 0402 16V R158 0R 0402 5 R163 100R 0402 5 R206 0R 0402 5 L10 0R 0603 5 U11 ASM1117 3 3_1A ADJ 1 OUT 2 OUT 4 IN 3 C123 33pF 0402 16V NC Y2 24MHz 3 C182 2 2uF 0402 16V C1...

Страница 22: ...R 0402 5 R350 10K 0402 5 L13 0R 1206 5 R192 150R 0402 5 C136 47nF 0603 16V CA4 100uF 16V ECS 5M Q15 3904 SOT 23 1 2 3 R187 4 7K 0402 5 L14 22uH 2 7A 2 1 C97 2 2uF 0402 16V C160 220nF 0805 50V R383 NC 24K CA6 100uF 16V ECS 5M C137 220nF 0805 50V R186 22K 0402 5 Q13 3906 SOT 23 CA1 100uF 35V ECS 5M R185 47K 0402 5 R193 1K R195 100K 0402 5 R175 150R 0402 5 R382 0 R200 24K D7 1N4148 SMD223 R225 100K 0...

Страница 23: ... 1M 1 4W QP6 8050 3 2 1 RP3 1M 1 4W CY102 471 400VAC TH101 CP4 471 CP13 102 1KV CP19 1000U 35V DP9 1N4007 RP1 1M 1 4W ZD205 18V CP1 68U 450V ZD303 15V RP42 1 5K 2W RP4 1M 1 4W CN101 1 2 3 CY106 101 400VAC LF101 10MH 2 3 1 4 CNV12 NC SIP2_2 0mm 1 2 RP21 33R 1 8W CY104 471 400VAC CX102 474 275VAC RP36 39K 1 6W RP29 100 0 25W RP31 220 1 6W RP11 220K 1 4W CP15 1000U 35V RP34 10K 1 6W RP5 1M 1 4W CP23 ...

Страница 24: ...nF RP56 150K RP73 1R RP55 RP9 RP63 62K ZDP16 7 5V 1206 RP72 1R CP31 470pF ZDP12 15V CP26 2 2uF CP34 104 100V RP85 ZDP5 27V DP15 RP46 2R2 0805 RP65 RP67 RP48 RP76 RP10 390K RP62 390K ZDP3 27V RP39 100 0 25W RP64 51K RP57 200K 1206 ZDP4 27V CP29 2 2uF CP37 82UF 100V RP51 10K RP88 RP58 180K RP50 100K RP54 RP59 200K RP61 470 RP87 RP75 1R CP36 471 1KV RP66 CP27 220pF RP74 1R RP86 ZDP2 27V RP45 2R2 RP53...

Страница 25: ......

Страница 26: ...L14 Repair Process Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Страница 27: ...ewing power auto on off 8 8 C Audio error No audio Normal video 9 9 Wrecked audio discontinuation noise 10 10 D Function error Remote control Local switch checking 11 11 External device recognition error 12 12 E Noise Circuit noise mechanical noise 13 13 F Exterior error Exterior defect 14 First of all Check whether there is SVC Bulletin in GCSC System for these model Contents of LCD TV Standard R...

Страница 28: ...h checking method A5 7 A Video error_ No video Video lag stop LCD TV Version checking method A6 9 10 LCD TV connection diagram A7 11 Check Link Cable LVDS reconnection condition A8 A9 12 A Video error_Color error Check test pattern A10 13 LCD TV connection diagram A8 14 Check Link Cable LVDS reconnection condition A8 A9 15 A Video error_Vertical Horizontal bar residual image light spot Check test ...

Страница 29: ... in menu when there is no audio A15 29 Voltage and speaker checking method when there is no audio A16 30 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A16 31 D Function error_ No response in remote controller key error Remote controller operation checking method A17 Continued from previous page Copyright 2014 LG Electronics Inc All rights re...

Страница 30: ...sion and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 1 14 LED TV Error symptom A Video error No video Normal audio A4 A1 A2 A6 A3 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speaker Cable IR B D Cable 2014 07 0...

Страница 31: ...IN B D Replace Power Board and repair parts Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 14 LED TV Error symptom 2014 07 07 End Normal Voltage Y N Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Страница 32: ... power supply or soldering Y N Y Y By using Digital signal level meter By using Diagnostics menu on OSD MENU CHANNEL MANUAL TUNING Signal quality Normal over 50 Y Contact with signal distributor or broadcaster Cable or Air N N Y N A6 Standard Repair Process Established date Revised date 3 14 LED TV Error symptom 2014 07 07 End Normal Signal Normal Picture Normal Picture Normal Picture SVC Bulletin...

Страница 33: ...with installed ANT N Y N A6 Standard Repair Process Established date Revised date 4 14 LED TV Error symptom 2014 07 07 Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Contact with signal distributor or broadcaster Cable or Air N Check Tuner soldering Replace Main B D Normal Picture End Normal Picture Normal Setting SVC Bulletin Normal Signal ...

Страница 34: ...put circuit or replace main board Replace Main B D N N A Video error Color error A7 N Y Replace module Request repair for external device cable Check Test pattern A10 A8 A9 Standard Repair Process Established date Revised date 5 14 LED TV Error symptom 2014 07 07 End Color error Color error External device Cable Normal External Input Co mponent error HDMI error External device Cable Normal Copyrig...

Страница 35: ...ce Main B D Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Connect other external device and cable Check normal operation of External Input Component HDMI by connecting Jig pattern Generator Set top Box etc Replace Main B D N Y Check S W Version Y N S W Upgrade Y N Y N Replace Main B D Replace Module Established date Revised date 6 14 LED T...

Страница 36: ... main chip or main board Y Replace Main B D N Y Repair power circuit or replace main board N Replace power board or main board Y A11 A12 A13 A4 Standard Repair Process Established date Revised date 7 14 LED TV Error symptom Stand By Red 2014 07 07 End Power LED On Normal Voltage Normal Voltage Normal Operati on Copyright 2014 LG Electronics Inc All rights reserved Only for training and service pur...

Страница 37: ...nation Normal POWEROFF_REMOTEKEY Power off by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_SWDOWN Power off by S W Download POWEROFF_UNKNOWN Power off by unknown status except listed case Abnormal POWEROFF_ABNORMAL1 Power off by abnormal sta...

Страница 38: ... Board C Audio error No audio Normal video A15 A16 Established date Revised date 9 14 LED TV Error symptom Standard Repair Process 2014 07 07 End Normal Voltage Off Disconn ection Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes Check user menu TV speaker ON OFF Check mute control should be high Y N circuit normal it ...

Страница 39: ...air to external cable ANT provider Y Check amplifier power 12V In case of External Input signal error Check and fix external device Replace Main B D N Established date Revised date 10 14 LED TV Error symptom Standard Repair Process A16 2014 07 07 End Signal Normal Normal Voltage Normal Audio Wrecked Audio Discontinuation Noise for all audio Wrecked Audio Discontinuation Noise only for D TV Wrecked...

Страница 40: ...eck Repair Cable connection Connector solder A17 N N Check 5V on main board replace main board or change IR SERSOR A4 Check IR Output signal N Y Repair Replace IR B D N A17 Replace Main B D Y A17 Standard Repair Process Established date Revised date 11 14 LED TV Error symptom 2014 07 07 End Normal Operating Normal Voltage Normal Signal Normal Operating Normal Operating End Y Copyright 2014 LG Elec...

Страница 41: ...technical information l a n g i S Input l a c i n h c e T information t u p n I l a n r e t x E and Component Recognition error HDMI Recognition error Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes E nd LED TV D Function error External device recognition error Established date Revised date 12 14 Error symptom Standard Repair Process 2014 07 07 LGE Inte...

Страница 42: ...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 Circuit noise Mechanical noise Copyright 2014 LG Electronics Inc All rights reserved Only for training and servic...

Страница 43: ...Exterior defect Exterior defect Established date Revised date 14 14 LED TV Error symptom Standard Repair Process 2014 07 07 Module damage Cabinet damage Remote Controller damage Stand damage Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Страница 44: ...es LGE Internal Use Only Standard Repair Process Detail Technical Manual LED TV Error symptom Content Check back light On with naked eye Established date 2014 07 07 A1 Revised date B Video error_No video Normal audio Power On disjoint back case check lighting at 2 points or other screws hole ...

Страница 45: ...07 07 1 Measure DC 24V applying to inverter PCB from Power Board 2 Output 24V from Power Board supply to inverter PCB Check Pin contacting statement and connection statement Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual ...

Страница 46: ...ard Repair Process Detail Technical Manual Main Board voltage measuring method A Video error_No video Audio A4 Established date Revised date Error symptom Content LED TV 2014 07 07 Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Страница 47: ...c Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop A5 Established date Revised date Error symptom Content LED TV 2014 07 07 Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Страница 48: ...symptom Content LED TV ENGLISH COAXIAL AUDIO IN Digital Audio System Blu Ray HD Cable Box HD STB DVD VCR Blu Ray HD Cable Box HD STB DVD PB PR Y VIDEO N E E R G BLUE D E R GREEN BLUE RED R L AUDIO WHITE RED WHITE RED USB YELLOW YELLOW WHITE RED VIDEO R AUDIO L 2 Blu Ray HD Cable Box HD STB DVD PC DVI to HDMI HDMI DVI 5V 500mA 5V 500mA 2014 07 07 Copyright 2014 LG Electronics Inc All rights reserve...

Страница 49: ... LGE Internal Use Only Standard Repair Process Detail Technical Manual LED TV Error symptom Content Check and replace Link Cable LVDS and contact condition Established date 2014 07 07 A8 A9 Revised date B Video error_Color error 1 Check and replace LVDS Cable 2 Check LVDS connection condition ...

Страница 50: ...t 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 T Con Board 1 Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 51: ... Abnormal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 52: ...ht leakage Press damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage Un repairable Cases In this case please exchange the module Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 53: ... Vertical 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 Un repairable Cases In this case please exchange the module Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 54: ...ocess Detail Technical Manual LED TV Error symptom Content Check test pattern Established date 2014 07 07 A10 Revised date B Video error_Color error Red pattern Green pattern Press Input 3195 then enter into factory mode select System Setting item enter into next page select Test Pattern to switch different color pattern Blue pattern ...

Страница 55: ...ed Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual LED TV Error symptom Content Check front display LED Established date 2014 07 07 A11 Revised date B Power error_No power ST BY Condition Red ...

Страница 56: ...heck power input voltage and ST BY 5V Established date 2014 07 07 A12 CA3 5VS R19 ST LP2 12V Check 5VS CA3 pin is high about 5 0V Revised date B Power error_No Power Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Страница 57: ...d service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual LED TV Error symptom Content Check methond when power is ON Established date 2014 07 07 A13 Revised date B Power error_No Power Check STB R19 pin is high about 3 0V CA3 5VS R19 ST LP2 12V ...

Страница 58: ...r Process Detail Technical Manual LED TV Error symptom Content Check method in menu when there is no audio Established date 2014 07 07 A15 Revised date C Audio error_No audio Normal video Checking order 1 Press the MENU button on the remote controller 2 Select the AUDIO function of the MENU 3 Select TV speaker and check its state ...

Страница 59: ...symptom Content Voltage and speaker checking method when there is no audio Established date 2014 07 07 A16 Revised date C Audio error_No audio Normal video Checking order 1 Check the 12V for amplifier from L13 2 Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal the speaker is normal 12V for amplifier ...

Страница 60: ...OG VIDEO INPUT LVDS INTERFACE AUDIO INPUT AUDIO DAC OUTPUT TUNER CRYSTAL SPDIF GPIO 1 SPI FLASH USB POWER U7 EN25Q32 TPA3110 BH3544 DIGITAL VIDEO SIGNAL ANALOG VIDEO SIGNAL ANALOG AUDIO SIGNAL DIGITAL AUDIO SIGNAL CONTROL SIGNAL SI2157 24MHZ PANEL SOC MSD3393LU Block Diagram System Block Diagram ...

Страница 61: ... 60 ARC 88 AVD D 3P3_D AD C 48 M AR K 130 T es t 131 E PAD 132 MSD3393LU U6 MSD3393LU LVA0M 70 SOGIN1 22 BIN1P 21 GIN1M 24 GIN1P 23 CVBS0 28 CVBS1 27 AUL1 36 GIN0P 16 GPIO0 GPIO44 55 LVAC KM 64 VD D C D VD D _D D R _C M D 54 VD D IO_C M D 53 AVDD_MOD 5 RIN1P 25 HOTPLUG_C D 80 LVA1P 67 LVB3P 71 D D C D B_C L 112 D D C D B_D A 111 GIN0M 17 IRIN 93 CEC 92 TEST 91 DDCA_CK 90 DDCA_DA 89 LVA3M 62 LVAC K...

Страница 62: ...POWER BOARD MAIN BOARD IR BOARD KEY PAD PANEL CN101 POWER SOCKET CN400 CN2 J1 CON2 LVDS LED DRIVER Wire Block ...

Страница 63: ......

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