Laney Amplification AH100 Car Amplifier User Manual
Contents
1. 1 ADC 1 HD RGB EDID data RGB input only LD21B support Enter Service Mode by pushing ADJ key ol 2 a3 4 s e 7v e8 9 A B cC D E F Enter Internal ADC mode by pushing gt key at 7 ADC 0 oo FF FF FF FF FF FF 00 1E 6D a b Calibration 10 c 01 03 68 10 09 78 OA EE 91 A3 54 4C 99 26 20 oF 50 54 a1 o8 oo 81 col 61 40 45 40 31 40 O1 O1 EZ ADJUST ADC Calibration 30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88 DER ADC Comp 480i 40 35 00 A0 5A 00 00 00 1C 01 1D 00 72 51 DO 1E 20 JEE ADC Comp 1080p 50 6E 28 55 00 Ao 5A 00 00 00 1E 00 00 00 FD 00 3A Zool pions ADC RGB 60 3E 1F 46 10 00 0A 20 20 20 20 20 20 d 3 Tool Option4 70 d ool e 4 Tool Option 5 5 Country Group 6 Area Option 2 HD HDMI EDID data ol112 s 4 s5 e 7 amp a e lA B lc bp eElF e nite Balanca 0 00 FF FF FF FF FF FF 00 1E 6D a b EL DIETAS 10 c 01 03 80 A0 5A 78 OA EE 91 A3 54 4C 99 26 10 Test Pattem 20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 O1 01 11 EDID D L 30 01 01 01 01 01 01 66 21 50 BO 51 00 1B 30 40 70 12 Sub B C 40 36 00 40 84 63 00 00 1E2. Set Stand Copyright 2012 LG Electronics Inc All rights reserved 18 LGE Internal Use Only Only for training and service purposes Contents of LCD TV Standard Repair Process No Error symptom High category Error symptom Mid category No video Normal audio Ca k A tat Tuning fail Picture broken Freezing aa ICoorerr lz Vertical Horizontal bar residual image light spot external device color error Nopower BEN B Power error Off when on off while viewing power auto on off No audio Normal video o9 O C Audio error TOME EN Wrecked audio discontinuation noise aaoo ee Remote control amp Local switch checking a ee D Function error B External device recognition error IE NEN 13 Exterior defect o First of all Check whether there is SVC Bulletin in GCSC System for these model Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Contents of LCD TV Standard Repair Process Detail Technical Manual Check LCD back light with nakedeye AL A Video error_ No video Normal LED
3. No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 1 720 576 15 625 50 00 13 5 SDTV DVD 576l 2 720 480 15 73 60 00 13 5135 SDTV DVD 4801 3 720 480 15 73 59 94 13 50 SDTV DVD 4801 4 720 576 31 25 50 00 27 00 SDTV 576P 5 720 480 31 50 60 00 27 027 SDTV 480P 6 720 480 31 47 59 94 27 00 SDTV 480P 7 1280 720 37 50 50 00 74 25 HDTV 720P 8 1280 720 45 00 60 00 74 25 HDTV 720P 9 1280 720 44 96 59 94 74 176 HDTV 720P 10 1920 1080 28 125 50 00 74 25 HDTV 106801 11 1920 1080 33 75 60 00 74 25 HDTV 106801 12 1920 1080 33 72 59 94 74 176 HDTV 106801 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 HDTV 1080P 19 1920 1080 33 71 29 97 74 176 HDTV 1080P 5 2 RGB Input PC LS35 LS34 CS46 series models are not supported No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed DDC 1 640 350 31 468 70 09 25 17 EGA X 2 720 400 31 469 70 08 28 32 DOS O 3 640 480 31 469 59 94 25 17 VESA VGA O 4 800 600 37 879 60 31 40 00 VESA SVGA O 5 1024 768 48 363 60 00 65 00 VESA XGA O 6 1152 864 54 348 60 053 80 00 VESA O 7 1360 768 47 712 60 015 85 50 VESA WXGA O 8 1920 1080 67 5 60 148 5 HDTV 1080P O
4. Display and Sound check is executed by Remote control lt Caution gt Not to push the INSTOP key after completion if the function inspection 4 Total Assembly line process 4 1 Adjustment Preparation e W B Equipment condition CA210 CCFL EEFL gt CH9 Test signal Inner pattern BOIRE LED gt CH14 Test signal Inner pattern 80IRE f it is executed W B adjustment in 2 3 minutes H run it is adjusted by Target data Mode Temp Coordinate spec Target cool saoo DZ DEE eu sgn veum 000 ZE 22 Ge nen soor oats ooon woas Edge LED W B Table in process of time LGD module amp 65 AUO module Aging Cool Medium Warm GP4 time X y x y x y Min 269 273 285 293 313 329 0 2 280 287 296 307 320 337 3 5 279 285 295 305 319 335 6 9 277 284 293 304 317 334 10 19 276 283 292 303 316 333 20 35 274 280 290 300 314 330 36 49 272 277 288 297 312 327 50 79 271 275 287 295 311 325 80 119 270 274 286 294 310 324 Over 120 269 273 285 293 309 323 o oj o 3 o N gt Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Connecting picture of the measuring instrument On Automatic control Inside PATTERN is used when W B is controlled Connect to auto controller or push Adjustment R C POWER ON gt Enter the mode of White Balance the pattern will come ou
5. Data Write data CS CMD LENGTH ADH ADL Data 1 Data n Delay 20ms 6 2 Comand Set Adjust mode CMD hex LENGTH hex Description EEPROM WRITE A0h 84h n n bytes Write n 1 16 13 Description FOS Default write lt 7mode data write Vtotal V_Frequency Sync_Polarity Htotal Hstart Vstart 0 Phase Data write Model Name and Serial Number write in EEPROM LGE Internal Use Only 6 3 Method amp notice 1 Serial number D L is using of scan equipment 2 Setting of scan equipment operated by Manufacturing Technology Group 3 Serial number D L must be conformed when it is produced in production line because serial number D L is mandatory by D book 4 0 Manual Download Model Name and Serial Number If the TV set is downloaded by OTA or Service man sometimes model name or serial number is initialized Not always There is impossible to download by bar code scan so It need Manual download 1 Press the Instart key of Adjustment remote control 2 Go to the menu 6 Model Number D L like below photo 3 input me Factory model name or Serial number like photo 1 Adjust Check Model Number D L 2 ADC Data 3 Power Off Status 4 System 1 5 System 2 SKUY1107 1 Serial Num 7 Test Option Press OK to Save 8 External ADC 9 Spread Spectrum 10 Be Level 11 Stal nt 12 ODC Test UIT 6 APP History Ver 638 POL DB LGD CF LGT10 oooox 4
6. F Restore Data b 1 1 j i 1 U j M Multi Flashes U 1 U j U I U U U V Program Verify iv Erase Device iv Exit ISP All Chip C File Area C Erase Area First PER KBytes Partial Erase T USB 380KHz 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 E TV Software Upgrade UPGRADING E TV Software Upgrade COMPLETED EH The TV will restart automatically in Tseconds Do not unplug 5 Updating Completed The TV will restart automatically 6 If your TV is turned on check your updated version and Tool option explain the Tool option next stage H downloading version is more high than your TV have TV can lost all channel data In this case you have to channel recover if all channel data is cleared you didn t have a DTV ATV test on production line After downloading have to adjust Tool Option again 1 Push IN START key in service remote control 2 Select Tool Option 1 and push OK key 3 Punch in the number Each model has their number LGE Internal Use Only 3 1 ADC Process 3 3 EDID data
7. 64 19 00 40 41 00 26 30 13 Touch Sensitivity Setting 50 18 88 03 06 40 84 63 00 00 18 oo 00 oo FD 00 3A lt Caution gt Using power on key of the Adjustment remote z SE 1E 93 40 09 DA 20 20 20 20 on A control power on TV 80 02 03 22 F1 4E 10 1F 84 13 o5 14 03 02 12 20 21 90 22 15 01 26 15 07 50 09 57 07 f ADC Calibration Protocol RS232 AO 80 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 A0 5A NO Item CMD 1 CMD 2 Data 0 Bo 00 00 00 9E 01 1D 00 72 51 DO 1E 20 6E 28 55 00 Enter Adjust a A o Jo When transfer the Mode In co 20 c2 31 oo 00 1E 8C oA Do 8A 20 Eo 2D 10 10 3E Adjust MODE Mode In Carry the command DO 96 00 AO 5A 00 00 00 18 02 3A 80 18 71 38 2D 40 i i E0 58 2c 45 oo ao 5A 00 00 00 1E 00 00 00 00 00 00 ADG sidus ADE E D EA ele FO 00 00 00 00 00 00 00 00 00 00 oo 00 00 o0 00 e Adjust Sequence 3 Detail EDID Options are below aa 00 00 Enter Adjust Mode a Product ID xb 00 40 Componenti Input 480i ad 00 10 Adjust 480i Compt MODEL NAME HEX EDID Table DDC Function xb 00 60 RGB Input 1024 768 only LD21B HD FHD Model 0001 01 00 Analog Digital ad 00 10 Adjust 1024 768 RGB only LD21B aa 00 90 End Adjust mode b Serial No Contro
8. 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 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 14 7 MAC Address amp Cl key download 7 1 MAC Address 7 1 1 Equipment amp Condition Play file Serial exe MAC Address edit Input Start End MAC address 7 1 2 Download method 1 Communication Prot connection m RS 232C cable wo M Personal Computer PCBA USB Port USB to Serial Adapter RS 232C Cable PC RS 232C Port UC 232A Connection PCBA USB Port USB to Serial Adapter UC 232A RS 232C cable PC RS 232C port Caution LJ21 chassis support only UC 232A driver only use this one 2 MAC Address amp Cl Key Download Set Cl Key path Directory at Start Mac amp Cl Download Programme Com 1 2 3 4 and 115200 Baudrate p GEL po e SS Start MAC Address End MAC Address pepeqwepeprpe db ad bo La asi set Ee EE FEE GPA LOW E 3 Port connection button click 1 Push the 2 MAC Address write At success Download check the OK 3 Start Cl Key Download Push the 4 Check the OK or NG IN START we Rb Adjust Check ADC Data Power Off Status System 1 System 2 odel Number D L Test Option External ADC Kach Spectrum nc Level M
9. Stable Count 12 ODC Test Adjust Check 1 Country Group Press OK Gem Group Con fe y 2a Country Group Country 2 Area Option 3 Tool Option Tool Option1 Tool Option2 Tool Option3 Tool Option4 Tool Option 4 Adjust White Balance 5 aust ADC 480i Component a Component 6 Dm HOM HDMI2 H 3 COI SH a Go NS Ss GB A Version ROM 0 02 Zelt 7R 1320 LGTTO oooox LGE Internal Use Only 7 2 LAN Inspection 7 2 1 Equipment amp Condition Each other connection to LAN Port of IP Hub and Jig IP 192 168 123 254 7 2 1 LAN inspection solution LAN Port connection with PCB Network setting at MENU Mode of TV e Setting automatic IP e Setting state confirmation gt If automatic setting is finished you confirm IP and MAC Address PCBA JIG Ready Setting automatic IP L E 7 3 LAN PORT INSPECTION PING TEST Connect SET LAN port PC gt LAN Port 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 7 2 LAN PORT inspection PING TEST Play the LAN Port Test Program Connect each other LAN Port Jack Play Test F9 button and confirm OK Message Remove LAN cable PingTest 3 1 2 3 4 Copyright 2012 LG Electronics Inc All rights reserved 15 Only for training and service purposes LGE Internal Use Only D
10. phase out Please refer to the all cases which can be displayed on power off mode Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Check Power Off Mode If Power Off mode is not displayed Check Power B D voltage x Caution Check and fix exterior of Power B D Part E date Off when on off while viewing power auto on off ess Replace Main B D Replace Power B D Replace Main B D N Replace Power B D Status Power off List Explanation Normal POWEROFF REMOTEKEY Power off 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 UNKNOWN Power off by unknown status except listed case Abnormal POWEROFF ABNORMAL1 Power off by abnormal status except CPU trouble POWEROFF CPUABNORMAL Power off by CPU Abnormal LGE Internal Use Only Standard Repair Process Error C Audio error SC memor symptom is E Revised date Check user Check audio B menu gt 24V of Powe
11. Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 5 3 HDMI Input PC DTV No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark PC DVI DDC 1 640 350 31 468 70 09 25 17 EGA X 2 720 400 31 469 70 08 28 32 DOS O 3 640 480 31 469 59 94 25 17 VESA VGA O 4 800 600 37 879 60 31 40 00 VESA SVGA O 5 1024 768 48 363 60 00 65 00 VESA XGA O 6 1152 864 54 348 60 053 80 00 VESA O 7 1360 768 47 712 60 015 85 50 VESA WXGA O 8 1280 1024 63 981 60 020 108 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 T 1920 1080 28 125 50 00 74 25 HDTV 10801 8 1920 1080 33 75 60 00 74 25 HDTV 10801 9 1920 1080 33 72 59 94 74 176 HDTV 10801 10 1920 1080 56 250 50 00 148 50 HDTV 1080P 11 1920 1080 67 50 60 00 148 50 HDTV 1080P 12 1920 1080 67 432 59 94 148 352 HDTV 1080P 13 1920 1080 27 00 24 00 74 25 HDTV 1080P 14 1920 1080 26 97 23 976 74 176 HDTV 1080P 15 1920 1080 33 75 30 00 74 25 HDTV 1080P Copyright 2012 LG Electronics Inc All rights reserved Only for training and
12. Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error F Exterior defect EE S pisci Zoom part with Replace module exterior damage d e Replace cabinet ontroller Replace remote controller Od ac Replace stand Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes LG Life s Good Contents of LCD TV Standard Repair Process No Error symptom High category Error symptom Mid category No video Normal audio Ca k A tat Tuning fail Picture broken Freezing aa ICoorerr lz Vertical Horizontal bar residual image light spot external device color error Nopower BEN B Power error Off when on off while viewing power auto on off No audio Normal video o9 O C Audio error TOME EN Wrecked audio discontinuation noise aaoo ee Remote control amp Local switch checking a ee D Function error B External device recognition error IE NEN 13 Exterior defect o First of all Check whether there is SVC Bulletin in GCSC System for these model Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Contents of LCD TV Standard Repair Process Detail Technical Manual Check LCD back light with nakedeye AL A Video error_ No video Normal LED driver B 24V measur
13. Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error F Exterior defect EE S pisci Zoom part with Replace module exterior damage d e Replace cabinet ontroller Replace remote controller Od ac Replace stand Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes
14. Freezing Revised date Check RF signal cable DVB satellite signal or not Check whether other equipments have problem or not By connecting RF Cable at other equipment Set Top Box Different maker TV etc Check RF Signal level Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Check Check Replace S W Version Tuner soldering Main B D Contact with signal distributor or broadcaster Cable or Air Change satellite setting match with installed ANT N Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process e Established Pensen symptom Check color by input External Input COMPONENT RGB HDMI DVI Check error color input 17 A10 Check Test pattern Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Color error x Check and replace Link Cable LVDS and contact condition Check external device and cable External Input RGB Check external HDMI DVI device and error cable Cable normal Replace Main B D Replace Main B D LGE Internal Use Only Standard Repair Process A Video error Established Error gg EES Vertical Horizontal bar residual image light spot external device color error Revised date Vertical Horizontal bar residual image light spot a A
15. driver B 24V measuring method A2 o Z O RM CheckWhiteBalancevaue Jafo oo o Power Board voltage measuring method A4 A Video error_ No video Video TUNER input signal strength checking method A5 lt Lop TV conection daoen a A8 EE Check Link Cable LVDS reconnection ES condition AQ Adjustment Test pattern ADJ Key LCO TV connection diagram A Video error Vertical Horizontal bar Check Link Cable LVDS reconnection residual image light spot condition Exchange T Con Board 1 A 1 5 Exchange T Con Board 2 A 2 5 lt Appendix gt 55 driver board Defected Type caused by T Con Exchange LEO driver Board PSU Other PSU Inverter Module Exchange Module itself 1 EN 2 EN ES 10 Exchange Module itself 2 Continue to the next page Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error A Video error Rp ud moon SS EE Revised date 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 aA a A4 No video Check Back Light Check Power Replace T con Normal audio On with naked eye Board Board or module 12v 3 5v etc II N Move to No SA2 Check Power Board 24v output Repair Power video No audio Board or parts Replace Inverter or module N Repair Powe
16. 7 Check color condition by input Check external External Input device ee Component connection Goen RGB condition HDMI DVI Request repair for external device Check screen condition by e input 2 Check S W Version External Input Connect other external Component C device and cable RGB Check normal operation of HDMI DVI External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Request repair for external device 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 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established Error B Power error E wazon 00000 TL Nomwe Revised date A11 DC Power on Repl Check P E Check Power ep ace by pressing Power Key Hinh Power Power LED On Remote control operation On High B D Stand By Red Check Power cord Replace Main B D was inserted properly Measure voltage of each output of Power B D Check ST BY 3 5V Replace Power B D Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error symptom Check outlet Check A C cord Check for all 3 phase power out Fix A C cord amp Out
17. Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 3 Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or lift off the board The following guidelines and procedures should be followed whenever this condition is encountered At IC Connections To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board Use this technique only on IC connec tions 1 Carefully remove the damaged copper pattern with a sharp knife Remove only as much copper as absolutely necessary 2 carefully scratch away the solder resist and acrylic coating if used from the end of the remaining copper pattern 3 Bend a small U in one end of a small gauge jumper wire and carefully crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to
18. ISASSEMBLY 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 3 of Back Cover and then separate Back Cover slowly Copyright 2012 LG Electronics Inc All rights reserved 16 LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM l WG da l l 4 5 e o z Lasn S IS l e e qoc pP ETT EU ES vasros HONOL 140S m LJ Alu 2 HOSN3S NON LOL EEN LEE i PEE ETE RN 4 sois C1 usw esos Wl e Tn Igv elv Wod non ad ad olv Wod NONWINOO Ee UT dAdA SAAD AvAuauodwog l PPV CdOO O Je y LGE Internal Use Only 17 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by A 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
19. North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com D Life s Good LED LCD TV CHASSIS LD21A MODEL 19LS3500 350S 350T 19LS3500 350S 350T ZA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL67360701 1202 REVO00 Printed in Korea CONTENTS ai KL RE 2 SAFETY PREGAUTIONS iain Le ners deene eege 3 SERVICING PRECAUTIONS eeeeeeeeeeneenee nennen 4 EENEG 6 ADJUSTMENT INSTRUCTION cccccesseeeeeeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 9 DISASSEMBLY ee 16 BLOCK DIAGRAM Mme 17 EXPLODED VIEW See ee 18 SCHEMATIC CIRCUIT DIAGRAM eene Copyright 2012 LG Electronics Inc All rights reserved ss LGE Internal Use Only Only for training and service purposes SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by A 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 Shock Fire or other Hazards Do not modify the original design without permission of manufacturer General Guidance An isolation Transformer should
20. P Utility and then click Config tab 2 Set as below and then click Auto Detect and check OK message If Error is displayed check connection between computer jig and set 3 Click Read tab and then load download file XXXX bin by clicking Read MStar ISP Uti ity v4 1 5 les fies jg e Checksurn Start Addr n nnnnna Uruaxecd Bytes End Addr FFF man C Gett Batch File Elapeed Time IC USB 450KHz Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 10 4 Click Connect tab If Can t is displayed check connection between computer jig and set MStar ISP Utility V4 1 0 iU e 2 el A ES SCH E ES R KI Restors HOCP Erase Dis Con E2PROM Device Setting Speed 74 4 ER I2C Pin Definition Spam C SCLin C SDAout SCL out iv Use USB p Communication Setting PortType USB F i PIN kan X Auto Detect SPI Setting Reverse High T USE SPI fV pini switch UART I2c T Pull all Pin High I ij JIG ES Aeply Elapsed Time USB 450KHz Flash Status 00 Please Check the Speed To use speed between from 200KHz to 400KHz 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message MStar ISP Utility 4 3 7 Source File DAD e Xa iv ReConnect Blank Read File E HDCP Key Checksum Keys
21. XX Precaution A6 amp A3 Always check amp record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process e Established Check various Check and No Video voltages of Power replace No audio Board 3 5V 12V 20V i MAIN B D or 24V Replace Power Board and repair parts Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error A Video error EE cune symptom i EE Revised date By using Digital signal level meter By using Diagnostics menu on OSD Check RF Signal level Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Check whether other equipments have problem or not By connecting RF Cable at other equipment DVD Player Set Top Box Different maker TV etc Check RF Cable Connection 1 Reconnection 2 Install Booster Check Check S W Version Tuner soldering Replace Main B D Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established Eun 2 VIJen GUN date monna symptom VE Tuning fail Picture broken Freezing Revised dat
22. always be used during the servicing of a receiver whose chassis is not isolated from the AC power line Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks It will also protect the receiver and it s components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation If any fuse or Fusible Resistor in this TV receiver is blown replace it with the specified When replacing a high wattage resistor Oxide Metal Film Resistor over 1 W keep the resistor 10 mm away from PCB Keep wires away from high voltage or high temperature parts Before returning the receiver to the customer always perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas terminals 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 metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the measured resistance should be between 1 MO and 5 2 MO When the expo
23. art and support RF OUT analog 5 Video Input RCA 1EA PAL SECAM NTSC 4 System PAL SECAM NTSC PAL60 Y Cb Cr 6 Component Input 1EA Y Pb Pr Analog D SUB 15PIN f RGB input pops lea in dp LD21A LD21C are not supported HDMI1 DTV DVI PC HDMI version 1 3 8 HDMI Input 3EA HDMI2 DTV Support HDCP HDMI3 DTV The number of Input ports is different by model e In case of the RGB DVI Audio input 9 Audio Input 2EA Eer Some models LD21A LD21C are not supported Component amp AV s audio input is used by common port 10 SDPIF out 1EA SPDIF out Some models LD21A LD21C are not supported 11 Earphone out 1EA fe a ae RGB Some models LD21A LD21C are not supported EMF JPEG MP3 DivX HD 12 USB 1EA or 2EA DivX HD LM58 CM96 2EA For SVC download LS56 LS35 CS46 LS 34 LM34 1EA CI UK Finland Denmark Norway Sweden Russia DVB T Spain Ireland Luxemburg Belgium Netherland Cl France Canal Italy DGTVi 13 DVB CI Switzerland Austria Slovenia Hungary Bulgaria DVB C Cl Switzerland UPC Cablecom Netherland Ziggo Germany KDG CWB Finland labwise DVB S Cl Germany Astra HD 14 Ethernet EA DLNA Wired DMP only Some models LD21A LD21C are not supported Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 5 Video resolutions 2D 5 1 Component Input Y Csa Ps Cr Pr
24. ber in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 4 Model General Specification 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC No Item Specification Remarks 1 Market EU PAL Market 37Countries DTV amp Analog Total 37 countries DTV MPEG2 4 DVB T 37 countries UK Italy 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 lreland Ukraine Kazakhstan DTV MPEG2 4 DVB C 37 countries UK Italy 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 S 29 countries Italy Germany France Spain Netherlands Belgium Luxemburg Greece Czech Austria Hungary Swiss Croatia Turkey Slovenia Poland Portugal Morocco Latvia Estonia Lithania Rumania Bulgaria Russia Slovakia Bosnia Serbia Albania Belarus Supported sa
25. d the printed circuit foil and hold it there only until the solder flows onto and around both the compo nent lead and the foil CAUTION Work quickly to avoid overheating the circuit board printed foil d Closely inspect the solder area and remove any excess or splashed solder with a small wire bristle brush LGE Internal Use Only IC Remove Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the cir cuit foil When holes are the slotted type the following technique should be used to remove and replace the IC When working with boards using the familiar round hole use the standard technique as outlined in paragraphs 5 and 6 above Removal 1 Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coating to the areas Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads as close as possible to the component body 2 Bend in
26. de by pushing ADJ key Enter White Balance by pushing Pp key at 8 White Balance EZ ADJUST White Balance 0 Tool Option1 1 Tool Option2 172 2 Tool Option3 172 3 Tool Option4 4 Tool Option5 5 Country Group 6 Area Option 7 ADC Calibration Test Pattern Backlight 9 10 Point WB Reset 10 Test Pattern 11 EDID D L 12 Sub B C 13 Touch Sensitivity Setting After you finished all adjustments Press In start key and compare Tool option and Area option value with its BOM if it is correctly same then unplug the AC cable If it is not same then correct it same with BOM and unplug AC cable For correct it to the model s module from factory Jig model Push the IN STOP key after completing the function inspection And Mechanical Power Switch must be set ONT 4 2 EYE Q function check 1 Turn on TV 2 Press EYE key of Adjustment remote control 3 Cover the Eye Q II sensor on the front of the using your hand and wait for 6 seconds 4 Confirm that R G B value is lower than 10 of the Raw Data Sensor data Back light If after 6 seconds R G B value is not lower than 10 replace Eye Q Il sensor 5 Remove your hand from the Eye Q II sensor and wait for 6 seconds 6 Confirm that ok pop up If change is not seen replace TI hee amp Sensor Data 127 mg Backlight 75 Eye Q II sensor 4 3 Outgoing condition Configuration m When pressing IN STOP key by SVC remoco
27. e Check RF signal cable DVB satellite signal or not Check whether other equipments have problem or not By connecting RF Cable at other equipment Set Top Box Different maker TV etc Check RF Signal level Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Check Check Replace S W Version Tuner soldering Main B D Contact with signal distributor or broadcaster Cable or Air Change satellite setting match with installed ANT N Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process e Established Pensen symptom Check color by input External Input COMPONENT RGB HDMI DVI Check error color input 17 A10 Check Test pattern Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Color error x Check and replace Link Cable LVDS and contact condition Check external device and cable External Input RGB Check external HDMI DVI device and error cable Cable normal Replace Main B D Replace Main B D LGE Internal Use Only Standard Repair Process A Video error Established Error gg EES Vertical Horizontal bar residual image light spot external device color error Revised date Vertical Horizontal bar residual image light spot a A7 Check color cond
28. ing method A2 o Z O RM CheckWhiteBalancevaue Jafo oo o Power Board voltage measuring method A4 A Video error_ No video Video TUNER input signal strength checking method A5 lt Lop TV conection daoen a A8 EE Check Link Cable LVDS reconnection ES condition AQ Adjustment Test pattern ADJ Key LCO TV connection diagram A Video error Vertical Horizontal bar Check Link Cable LVDS reconnection residual image light spot condition Exchange T Con Board 1 A 1 5 Exchange T Con Board 2 A 2 5 lt Appendix gt 55 driver board Defected Type caused by T Con Exchange LEO driver Board PSU Other PSU Inverter Module Exchange Module itself 1 EN 2 EN ES 10 Exchange Module itself 2 Continue to the next page Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error A Video error Rp ud moon SS EE Revised date 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 aA a A4 No video Check Back Light Check Power Replace T con Normal audio On with naked eye Board Board or module 12v 3 5v etc II N Move to No SA2 Check Power Board 24v output Repair Power video No audio Board or parts Replace Inverter or module N Repair Power Board or parts
29. ition by input Check external External Input device ee Component connection Goen RGB condition HDMI DVI Request repair for external device Check screen condition by e input 2 Check S W Version External Input Connect other external Component C device and cable RGB Check normal operation of HDMI DVI External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Request repair for external device 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 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established Error B Power error E wazon 00000 TL Nomwe Revised date A11 DC Power on Repl Check P E Check Power ep ace by pressing Power Key Hinh Power Power LED On Remote control operation On High B D Stand By Red Check Power cord Replace Main B D was inserted properly Measure voltage of each output of Power B D Check ST BY 3 5V Replace Power B D Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error symptom Check outlet Check A C cord Check for all 3 phase power out Fix A C cord amp Outlet and check each 3
30. lace Main B D Power B D don t have problem If R C operate Explain the customer cause is interference from light in room Replace R C Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process E iral ona Error D Function error date Check technical information Fix information S W Version Check and fix ez external device cable Fixin c pepe MAn B D accordance with technical information Replace Main B D Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established Error date symptom S 2 A VTR Circuit noise mechanical noise Revised date Replace PSU with LED driver Check location of noise Replace LED driver Identify nose type al Check location of noise X When the nose is severe replace the module For models with fix information upgrade the x Mechanical noise is a natural S W or provide the description phenomenon and apply the 1st level description When the customer does not X If there is a Tak Tak noise from the agree apply the ae by stage cabinet refer to the KMS fix information and e the basis o eet then proceed as shown in the solution manual E art related to nose in the Owner s For models without any fix information anual provide the description Copyright 2012 LG
31. let and check each 3 phase out Please refer to the all cases which can be displayed on power off mode Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Check Power Off Mode If Power Off mode is not displayed Check Power B D voltage x Caution Check and fix exterior of Power B D Part E date Off when on off while viewing power auto on off ess Replace Main B D Replace Power B D Replace Main B D N Replace Power B D Status Power off List Explanation Normal POWEROFF REMOTEKEY Power off 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 UNKNOWN Power off by unknown status except listed case Abnormal POWEROFF ABNORMAL1 Power off by abnormal status except CPU trouble POWEROFF CPUABNORMAL Power off by CPU Abnormal LGE Internal Use Only Standard Repair Process Error C Audio error SC memor symptom is E Revised date Check user Check audio B
32. lled on production line Required equipment Adjustment remote control c Month Year Controlled on production line ex Week 01 gt 01 3 2 EDID Download Year 2012 gt TB m After enter Service Mode by pushing ADJ key d Model Name Hex Enter EDID D L menu cf TV set s model name in EDID data is below Enter START by pushing OK key Model name MODEL NAME HEX lt Caution gt Never connect HDMI amp amp D sub cable when EDID LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 LG TV downloaded e Checksum Changeable by total EDID data EZ ADJUST EDID D L HD 0 Tool Option1 EDID C S data 1 Tool Option2 HDMI RGB 2 Tool Option3 Check Block 0 A4 N A 3 Tool Option4 ecK sum 4 Tool Option 5 Hex Block 1 5B HDMI1 N A 5 Country Group 4B HDMI2 6 Area Option 7 ADC Calibration f Vendor Specific HDMI B White Balance Input Model name HEX 9 10 Point WB 10 Test Pattern HDMI1 67030C001000 HDMI2 67030C002000 12 Sub B C 13 Touch Sensitivity Setting HDMI3 67030C003000 Copyright 2012 LG Electronics Inc All rights reserved sc LGE Internal Use Only Only for training and service purposes 3 4 Function Check Check display and sound m Check Input and Signal items 1 TV 2 AV SCART CVBS 3 COMPONENT 480i 4 RGB PC 1024 x 768 60hz RGB input LD21B only support 5 HDMI 6 PC Audio In except LD21A chassis model
33. lume isopropyl alcohol 90 99 strength CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts in not required 5 Do not defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped 6 Do not apply AC power to this instrument and or any of its electrical assemblies unless all solid state device heat sinks are correctly installed 7 Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 8 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged eas ily 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 used to help reduce the incidence of component dam age caused by static by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alter
34. menu gt 24V of Power Speaker off Board Cancel OFF Replace Power Board and repair parts No audio Screen normal Check Speaker disconnection Disconnection Replace MAIN Board Replace Speaker Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error C Audio error E i Wrecked audio discontinuation noise abnormal audio discontinuation noise is same after Check input signal compared to No audio A16 Check and replace speaker and connector Check audio B Voltage 24V Check input signal RF External Input signal When RF signal is not received Request repair to external Cable ANT provider In case of External Input Connect and check signal error other external Check and fix device external device Check and fix external device Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error D Function error Ge pee LCD TV ate prp Remote control amp Local switch checking Revised d atel T 1 Remote control R C operating error Check R C itself E papas orma Ene Et Check IR Cable connection A 3 5V Operation J operating Output signal Connector solder On Main B D Replace Main B D Check R C Operating Check 3 5v on Power B D Repair Replace When turn off light Replace Power B D o
35. mize bodily motions when handling unpackaged replace ment ES devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity suf ficient to damage an ES device General Soldering Guidelines 1 Use a grounded tip low wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 F to 600 F 2 Use an appropriate gauge of RMA resin core solder composed of 60 parts tin 40 parts lead 3 Keep the soldering iron tip clean and well tinned 4 Thoroughly clean the surfaces to be soldered Use a mall wire bristle 0 5 inch or 1 25 cm brush with a metal handle Do not use freon propelled spray on cleaners 5 Use the following unsoldering technique a Allow the soldering iron tip to reach normal temperature 500 F to 600 F b Heat the component lead until the solder melts c Quickly draw the melted solder with an anti static suction type solder removal device or with solder braid CAUTION Work quickly to avoid overheating the circuit board printed foil 6 Use the following soldering technique a Allow the soldering iron tip to reach a normal temperature 500 F to 600 F b First hold the soldering iron tip and solder the strand against the component lead until the solder melts c Quickly move the soldering iron tip to the junction of the component lead an
36. n Red LED are blinked alternatively And then automatically turn off Must not AC power OFF during blinking Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 5 HI POT Test 5 1 HI POT auto check preparation Check the POWER cable and SIGNAL cable insertion 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 mass production 3 TEST POINT Touchable Metal gt LIVE amp NEUTRAL Touchable Metal SIGNAL gt LIVE amp NEUTRAL SIGNAL 6 Model name amp Serial number D L Press Power on key of service remote control Baud rate 115200 bps Connect USB to RS232 Signal Cable to USB Jack Write Serial number Must check the serial number at the Diagnostics of SET UP menu Refer to below Picture Test L3 Sound Test i Signal Test 6 1 Signal Table CMD LENGTH ADH ADL DATA_1 Data_n cs DELAY CMD AOh LENGTH 85 94h 1 16 bytes ADH EEPROM Sub Address high 00 1F ADL EEPROM Sub Address low 00 FF
37. 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 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or expo sure of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES devices 4 Use only an anti static type solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electri cally shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of a replacement ES device touch the protective material to the chassis or circuit assembly into which the device will be installed CAUTION Be sure no power is applied to the chassis or circuit and observe all other safety precautions 8 Mini
38. r Board or parts XX Precaution A6 amp A3 Always check amp record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process e Established Check various Check and No Video voltages of Power replace No audio Board 3 5V 12V 20V i MAIN B D or 24V Replace Power Board and repair parts Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error A Video error EE cune symptom i EE Revised date By using Digital signal level meter By using Diagnostics menu on OSD Check RF Signal level Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Check whether other equipments have problem or not By connecting RF Cable at other equipment DVD Player Set Top Box Different maker TV etc Check RF Cable Connection 1 Reconnection 2 Install Booster Check Check S W Version Tuner soldering Replace Main B D Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established Eun 2 VIJen GUN date monna symptom VE Tuning fail Picture broken
39. r Speaker off Board Cancel OFF Replace Power Board and repair parts No audio Screen normal Check Speaker disconnection Disconnection Replace MAIN Board Replace Speaker Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error C Audio error E i Wrecked audio discontinuation noise abnormal audio discontinuation noise is same after Check input signal compared to No audio A16 Check and replace speaker and connector Check audio B Voltage 24V Check input signal RF External Input signal When RF signal is not received Request repair to external Cable ANT provider In case of External Input Connect and check signal error other external Check and fix device external device Check and fix external device Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error D Function error Ge pee LCD TV ate prp Remote control amp Local switch checking Revised d atel T 1 Remote control R C operating error Check R C itself E papas orma Ene Et Check IR Cable connection A 3 5V Operation J operating Output signal Connector solder On Main B D Replace Main B D Check R C Operating Check 3 5v on Power B D Repair Replace When turn off light Replace Power B D or IR B D in room Rep
40. r IR B D in room Replace Main B D Power B D don t have problem If R C operate Explain the customer cause is interference from light in room Replace R C Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process E iral ona Error D Function error date Check technical information Fix information S W Version Check and fix ez external device cable Fixin c pepe MAn B D accordance with technical information Replace Main B D Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established Error date symptom S 2 A VTR Circuit noise mechanical noise Revised date Replace PSU with LED driver Check location of noise Replace LED driver Identify nose type al Check location of noise X When the nose is severe replace the module For models with fix information upgrade the x Mechanical noise is a natural S W or provide the description phenomenon and apply the 1st level description When the customer does not X If there is a Tak Tak noise from the agree apply the ae by stage cabinet refer to the KMS fix information and e the basis o eet then proceed as shown in the solution manual E art related to nose in the Owner s For models without any fix information anual provide the description
41. re servicing receivers covered by this service manual and its supplements and addenda read and follow the SAFETY PRECAUTIONS on page 3 of this publication NOTE If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication always follow the safety precautions Remember Safety First General Servicing Precautions 1 Always unplug the receiver AC power cord from the AC power source before a Removing or reinstalling any component circuit board mod ule or any other receiver assembly b Disconnecting or reconnecting any receiver electrical plug or other electrical connection c Connecting a test substitute in parallel with an electrolytic capacitor in the receiver CAUTION A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explo sion hazard 2 Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device DVM FETVOM etc equipped with a suitable high voltage probe Do not test high voltage by drawing an arc 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable non abrasive applicator 10 by volume Acetone and 90 by vo
42. repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on the component side of the circuit board 1 Remove the defective copper pattern with a sharp knife Remove at least 1 4 inch of copper to ensure that a hazardous condition will not exist if the jumper wire opens 2 Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly con nected to the affected copper pattern 3 Connect insulated 20 gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side Carefully crimp and solder the connections CAUTION Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges LGE Internal Use Only SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 1 Application range This specification is applied to the LCD TV used LD21A chassis 2 Requirement for Test Each part is tested as below without special appointment 1 Temperature 25 C 5 C 77 F 9 F CST 40 C 5 C 2 Relative Humidity 65 10 3 Power Voltage Standard input voltage AC 100 240 V 50 60 Hz Standard Voltage of each products is marked by models 4 Specification and performance of each parts are followed each drawing and specification by part num
43. sed metal has no return path to the chassis the reading must be infinite An other abnormality exists that must be corrected before the receiver is returned to the customer Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Leakage Current Hot Check See below Figure Plug the AC cord directly into the AC outlet Do not use a line Isolation Transformer during this check Connect 1 5 K 10 watt resistor in parallel with a 0 15 uF capacitor between a known good earth ground Water Pipe Conduit etc and the exposed metallic parts Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms volt or more sensitivity Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part Any voltage measured must not exceed 0 75 volt RMS which is corresponds to 0 5 mA In case any measurement is out of the limits specified there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer Leakage Current Hot Check circuit AC Volt meter i Good Earth Ground such as WATER PIPE CONDUIT etc To Instrument s o G 0 15 uF exposed METALLIC PARTS a ee NM 1 5 Kohm 10W When 25A is impressed between Earth and 2nd Ground for 1 second Resistance must be less than 0 1 Q Base on Adjustment standard LGE Internal Use Only SERVICING PRECAUTIONS CAUTION Befo
44. service purposes LGE Internal Use Only ADJUSTMENT INSTRUCTION 1 Application Range This specification sheet is applied to all of the LCD TV with LD21A chassis 2 Designation 1 The adjustment is according to the order which is designated and which must be followed according to the plan which can be changed only on agreeing Power adjustment Free Voltage Magnetic Field Condition Nil Input signal Unit Product Specification Standard Reserve after operation Above 5 Minutes Heat Run Temperature at 25 C 5 C Relative humidity 65 10 Input voltage 220 V 60 Hz 6 Adjustment equipments Color Analyzer CA 210 or CA 110 DDC Adjustment Jig Service remote control 7 Push the IN STOP key For memory initialization 2 3 4 5 Casel Software version up 1 After downloading S W by USB TV set will reboot automatically 2 Push In stop key 3 Push Power on key 4 Function inspection 5 After function inspection Push In stop key Case2 Function check at the assembly line 1 When TV set is entering on the assembly line Push In stop key at first 2 Push Power on key for turning it on If you push Power on key TV set will recover channel information by itself 3 After function inspection Push In stop key 3 Main PCB check process APC After Manual Insert executing APC Boot file Download 1 Execute ISP program Mstar IS
45. t Full White Pattern KOI CcA210 RS 232C Communication COLOR ANALYZER TYPE CA 210 Auto control interface and directions 1 Adjust in the place where the influx of light like floodlight around is blocked illumination is less than 10 lux 2 Adhere closely the Color analyzer CA210 to the module less than 10 cm distance keep it with the surface of the 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 242 CMD ID DATA Wb 00 00 White Balance Start Wb 00 ff White Balance End RS 232C COMMAND CENTER CMD ID DATA MIN DEFAULT MAX Cool Mid Warm Cool Mid Warm R Gain jg Ja jd 00 172 192 192 192 G Gain jh Jb je 00 172 192 192 192 B Gain ji Jc jf 00 192 192 172 192 R Cut 64 64 64 128 G Cut 64 64 64 128 B Cut 64 64 64 128 lt Caution gt Color Temperature COOL Medium Warm One of R Gain G Gain B Gain should be kept on OxCO and adjust other two lower than CO When R G B Gain are all CO it is the FULL Dynamic Range of Module LGE Internal Use Only Manual W B process using adjust Remote control After enter Service Mo
46. tellite 22 satellites HISPASAT 1C 1D ATLANTIC BIRD 2 NILESAT 101 102 ATLANTIC BIRD 3 AMOS 2 3 THOR 5 6 IRIUS 4 EUTELSAT W3A EUROBIRD 9A EUTELSAT W2A HOTBIRD 6 8 9 EUTELSAT SESAT ASTRA 1L H M KR ASTRA 3A 3B BADR 4 6 ASTRA 2D EUROBIRD 3 EUTELSAT W7 HELLASSAT 2 EXPRESS AM1 TURK SAT 2A 3A INTERSAT10 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only No Item Specification Remarks 1 PAL BG 2 PAL DK 2 Broadcasting system 3 PAL I I 4 SECAM LI 5 DVB T T2 C S gt DVB T Guard Interval Bitrate Mbit s 1 4 1 8 1 16 1 32 Modulation Code Rate QPSK 1 2 2 3 3 4 5 6 7 8 16 QAM 1 2 2 3 3 4 5 6 7 8 64 QAM 1 2 2 3 3 4 5 6 7 8 gt DVB T2 Guard Interval Bitrate Mbit s 1 4 1 8 1 16 1 32 1 128 19 128 19 256 Modulation Code Rate Analog Upper Heterodyne 16 QAM 215 213 3 516 3 Receiving system Digital COFDM QAM 64 QAM 1 2 2 5 2 3 3 4 5 6 256 QAM 1 2 2 5 2 3 3 4 5 6 gt DVB C Symbolrate 4 0Msymbols s to 7 2Msymbols s Modulation 16QAM 64 QAM 128 QAM and 256 QAM gt 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 4 Scart Jack 1EA PAL SECAM Scart 1 Jack is Full sc
47. to a U shape the end of each of three leads remaining on the circuit board 3 Bend into a U shape the replacement transistor leads 4 Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the U with long nose pliers to insure metal to metal contact then solder each connection Power Output Transistor Device Removal Replacement 1 Heat and remove all solder from around the transistor leads 2 Remove the heat sink mounting screw if so equipped 3 Carefully remove the transistor from the heat sink of the circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as pos sible to diode body 2 Bend the two remaining leads perpendicular y to the circuit board 3 Observing diode polarity wrap each lead of the new diode around the corresponding lead on the circuit board 4 Securely crimp each connection and solder it 5 Inspect on the circuit board copper side the 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
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