LG 19LS3500 Service Manual Download Page 35 | Manualshive

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Summary of Contents for 19LS3500

Page 1: ...50S 350T MODEL 19LS3500 350S 350T ZA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED LCD TV SERVICE MANUAL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ...ics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 DISASSEMBLY 16 BLOCK DIAGRAM 17 EXPLODED VIEW 18 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...inals 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 m...

Page 4: ...lectrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial 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...

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

Page 6: ... Germany France Spain Sweden Finland Nether lands Belgium Luxemburg Greece Denmark Czech Austria Hungary Swiss Croatia Turkey Norway Slovenia Poland Ukraine Portugal Ireland Morocco Latvia Estonia Lithania Rumania Bulgaria Russia Slovakia Bosnia Serbia Albania Kazakhstan Belarus DTV MPEG2 4 DVB T2 8 countries UK Denmark Sweden Finland Norway Ireland Ukraine Kazakhstan DTV MPEG2 4 DVB C 37 countrie...

Page 7: ...rt RF OUT analog 5 Video Input RCA 1EA PAL SECAM NTSC 4 System PAL SECAM NTSC PAL60 6 Component Input 1EA Y Cb Cr Y Pb Pr 7 RGB Input RGB PC Analog D SUB 15PIN Some models LD21A LD21C are not supported 8 HDMI Input 3EA HDMI1 DTV DVI HDMI2 DTV HDMI3 DTV PC HDMI version 1 3 Support HDCP The number of Input ports is different by model 9 Audio Input 2EA RGB DVI Audio Component AV In case of the RGB DV...

Page 8: ...96 59 94 74 176 HDTV 720P 10 1920 1080 28 125 50 00 74 25 HDTV 1080I 11 1920 1080 33 75 60 00 74 25 HDTV 1080I 12 1920 1080 33 72 59 94 74 176 HDTV 1080I 13 1920 1080 56 25 50 00 148 50 HDTV 1080P 14 1920 1080 67 50 60 00 148 50 HDTV 1080P 15 1920 1080 67 432 59 94 148 352 HDTV 1080P 16 1920 1080 27 00 24 00 74 25 HDTV 1080P 17 1920 1080 26 97 23 94 74 176 HDTV 1080P 18 1920 1080 33 75 30 00 74 25...

Page 9: ...0 020 108 0 VESA SXGA O FHD only 9 1920 1080 67 50 60 00 148 5 HDTV 1080P O FHD only DTV 1 720 480 31 47 59 94 27 00 SDTV 480P 2 720 480 31 50 60 00 27 027 SDTV 480P 3 720 576 31 250 50 00 27 00 SDTV 576P 4 1280 720 37 50 50 00 74 25 HDTV 720P 5 1280 720 45 00 60 00 74 25 HDTV 720P 6 1280 720 44 96 59 94 74 176 HDTV 720P 7 1920 1080 28 125 50 00 74 25 HDTV 1080I 8 1920 1080 33 75 60 00 74 25 HDTV ...

Page 10: ...fter downloading check OK message USB DOWNLOAD 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t work But your downloaded version is High USB data is automatically detecting 3 Show the message Copying files from memory 4 Updating is starting 5 Updating Completed The TV will restart automatically...

Page 11: ...adjustment The use of a internal pattern 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D a b 10 c 01 03 68 10 09 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 81 C0 61 40 45 40 31 40 01 01 30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88 40 35 00 A0 5A 00 00 00 1C 01 1D 00 72 51 D0 1E 20 50 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A 60 3E 1F 46 10 00 0A 20 20 20 20 20 20 d...

Page 12: ...he Module and Color analyzer s prove vertically 80 100 3 Aging time After aging start keep the power on no suspension of power supply and heat run over 5 minutes Using no signal or POWER ONLY or the others check the back light on Auto adjustment Map using RS 232C to USB cable RS 232C COMMAND CMD ID DATA Wb 00 00 White Balance Start Wb 00 ff White Balance End Caution Color Temperature COOL Medium W...

Page 13: ...sertion condition 5 2 HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GWS103 4 on 4 HI POT test Auto If Test is failed Buzzer operates If Test is passed GOOD Lamp on and move to next proc ess automatically 5 3 Checkpoint 1 Test voltage Touchable Metal 3KV min at 100mA SIGNAL 3KV min at 100mA 2 TEST time 1 second case ...

Page 14: ...the menu 6 Model Number D L like below photo 3 Input the Factory model name or Serial number like photo 4 Check the model name Instart menu Factory name displayed ex 32LV3400 ZG 5 Check the Diagnostics DTV country only Buyer model displayed ex 32LV3400 ZG 7 MAC Address CI key download 7 1 MAC Address 7 1 1 Equipment Condition Play file Serial exe MAC Address edit Input Start End MAC address 7 1 2 ...

Page 15: ... Mode of TV Setting automatic IP Setting state confirmation If automatic setting is finished you confirm IP and MAC Address 7 3 LAN PORT INSPECTION PING TEST Connect SET LAN port PC LAN Port 7 3 1 Equipment setting 1 Play the LAN Port Test PROGRAM 2 Input IP set up for an inspection to Test Program IP Number 12 12 2 2 7 3 2 LAN PORT inspection PING TEST 1 Play the LAN Port Test Program 2 Connect e...

Page 16: ...ing and service purposes Caution Please unlock latches from Bottom Side for separating Back Cover from CABINET Method Firstly Grab left side of Speaker Vent Hole and then unlock left side latches slowly Secondly Grab center of Back Cover and then separate Back Cover slowly DISASSEMBLY 2 1 3 ...

Page 17: ...SH IC1401 8Mbit MX25L8006EM2I 12G LVDS HD 50Hz Audio AMP STA380BW SPK L R FFC HD 30P I2S DDR3 Add DDR3 Data SPI NAND FLASH IC102 1Gbit K9F1G08U0D SCB0 PCM_A 0 7 DDR3 1Gbit IC1201 K4B1G1646G BCK0 CONTROL IR LED SOFT TOUCH TACT SWITCH SENSOR SOFT TOUCH _SCL SDA LED_R KEY1 KEY2 IR SERIAL FLASH IC104 256Kbit R1EX2425BSAS0A I2C CI Slot IC1902 Buffer TC74LCX244FT TS_DATA 0 7 PCM_DATA 0 7 FE_TS_DATA 0 7 ...

Page 18: ...al 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 manufacturer I...

Page 19: ...error No power 7 7 Off when on off while viewing 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 fo...

Page 20: ...7 10 Check Link Cable LVDS reconnection condition A8 A9 11 Adjustment Test pattern ADJ Key A10 12 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 13 Check Link Cable LVDS reconnection condition A8 A9 14 Adjustment Test pattern ADJ Key A10 15 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 16 Exchange T Con Board 2 A 2...

Page 21: ...ck record S W Version 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 LCD 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 ...

Page 22: ...replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 14 LCD TV Error symptom 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 23: ...ck Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 3 14 L...

Page 24: ...t maker TV etc Y Change satellite setting match with installed ANT N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 4 14 LCD TV Error symptom 2012 01 14 Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Normal setting Contact with signal distributor or broadcaster Cable or Air Close N Check Tuner soldering Rep...

Page 25: ...vice and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A7 N Y End Replace module Request repair for external device cable Color error Check Test pattern A10 A8 A9 Standard Repair Process Established date Revised date 5 14 LCD TV Error symptom 2012 01 14 Copyright 2012 LG Electronics Inc All ri...

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

Page 27: ...ltage of each output of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A11 A12 A13 A4 Standard Repair Process Established date Revised date 7 14 LCD TV Error symptom Stand By Red Close 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE...

Page 28: ...by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reserved Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Download POWEROFF_...

Page 29: ...repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A15 A16 Disconnection Established date Revised date 9 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 30: ...ct and check other external device N Y Normal audio Check and fix external device Replace Power B D 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 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Establish...

Page 31: ...rry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A17 Normal Voltage Close N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal Normal 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 LCD TV Error symptom 2012...

Page 32: ... device cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 12 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 33: ...s 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 E Noise Circuit noise mechanical noise Established date Revised date 13 14 LCD TV ...

Page 34: ...te controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 14 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 35: ......

Page 36: ...error No power 7 7 Off when on off while viewing 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 fo...

Page 37: ...7 10 Check Link Cable LVDS reconnection condition A8 A9 11 Adjustment Test pattern ADJ Key A10 12 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 13 Check Link Cable LVDS reconnection condition A8 A9 14 Adjustment Test pattern ADJ Key A10 15 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 16 Exchange T Con Board 2 A 2...

Page 38: ...ck record S W Version 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 LCD 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 ...

Page 39: ...replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 14 LCD TV Error symptom 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 40: ...ck Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 3 14 L...

Page 41: ...t maker TV etc Y Change satellite setting match with installed ANT N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 4 14 LCD TV Error symptom 2012 01 14 Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Normal setting Contact with signal distributor or broadcaster Cable or Air Close N Check Tuner soldering Rep...

Page 42: ...vice and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A7 N Y End Replace module Request repair for external device cable Color error Check Test pattern A10 A8 A9 Standard Repair Process Established date Revised date 5 14 LCD TV Error symptom 2012 01 14 Copyright 2012 LG Electronics Inc All ri...

Page 43: ...g Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen n...

Page 44: ...ltage of each output of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A11 A12 A13 A4 Standard Repair Process Established date Revised date 7 14 LCD TV Error symptom Stand By Red Close 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE...

Page 45: ...by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reserved Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Download POWEROFF_...

Page 46: ...repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A15 A16 Disconnection Established date Revised date 9 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ...ct and check other external device N Y Normal audio Check and fix external device Replace Power B D 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 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Establish...

Page 48: ...rry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A17 Normal Voltage Close N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal Normal 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 LCD TV Error symptom 2012...

Page 49: ... device cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 12 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...s 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 E Noise Circuit noise mechanical noise Established date Revised date 13 14 LCD TV ...

Page 51: ...te controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 14 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

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