LG 29LN45 Service Manual

35 pages manual for LG 29LN45 LED TV

LG 29LN45 LED TV Manual

Manufacturer: LG

Category of Device: LED TV

Document: LG 29LN45 Service Manual, File Type: PDF

Count of Pages: 35

Download LG 29LN45 Manual

LG 29LN45 LED TV Manual, Summary of Contents:

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1 LG 29LN45 Page 1

LG 29LN45 Manual Page 1 Page 1 Printed in Korea P/NO : MFL67862501 (1304-REV00) CHASSIS : LA31R / LD31S MODEL : 29LN45**    29LN45**-Z* CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. LED 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 ...

2 LG 29LN45 Page 2

LG 29LN45 Manual Page 2 Page 2 - 2 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS  .............................................................................................. 2 SAFETY PRECAUTIONS  ........................................................................ 3 SERVICING PRECAUTIONS  ................................................................... 4 SPECIFICATION  ..........................................................

3 LG 29LN45 Page 3

LG 29LN45 Manual Page 3 Page 3 - 3 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes Many electrical 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&...

4 LG 29LN45 Page 4

LG 29LN45 Manual Page 4 Page 4 - 4 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes SERVICING PRECAUTIONS CAUTION: Before 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 precau- tions. Remember:...

5 LG 29LN45 Page 5

LG 29LN45 Manual Page 5 Page 5 - 5 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 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 parag...

6 LG 29LN45 Page 6

LG 29LN45 Manual Page 6 Page 6 - 6 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This  specification  is  applied  to  the  LED  TV  used  LA31R  /  LD31S chassis. 2. Requirement for Test Each part is tested as below without special appointment. 1) Temperature: 25 °C ± 5 °C(...

7 LG 29LN45 Page 7

LG 29LN45 Manual Page 7 Page 7 - 7 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Item Specification Remarks 2 Broadcasting system Analogue TV 1) PAL-BG 2) PAL-DK 3) PAL-I/I’ 4) SECAM-BG 5) SECAM-DK 6) SECAM L/L’ Digital TV 1) DVB-T/C/T2 Satellite Digital TV 1) DVB-T/C/S/S2 Analogue TV : (RF) VHF: E2 to E12, UHF : E21 to E69 (CATV) S1 to S20, HYPER: S21 to S47 Digital TV : VHF, UHF Satellite TV : VHF, UHF, C-Band, Ku-Band * DVB-T2 ( T2 model only support ) * DVB-S/S2 (...

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LG 29LN45 Manual Page 8 Page 8 - 8 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 5. Timing 5.1. RGB/HDMI (PC) No. Specification Remark Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 1. 720*400 31.468 70.080 28.321 2. 640*480 31.469 59.940 25.175 3. 640*480 37.500 75.000 31.500 4. 800*600 37.879 60.317 40.000 5. 800*600 46.875 75.000 49.500 6. 1024*768 48.363 60.004 65.000 7. 1024*768 60.023 75.029 78.750 8. 1280*800 49.702 59.810 83.500 9. 1366*768 47.717 59.79 85.5 5.2. HDMI (DTV) No. Specification Remar...

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LG 29LN45 Manual Page 9 Page 9 - 9 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 5.3. Component No. Specification Remark Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 1. 720*480 15.730 59.940 13.500 SDTV, DVD 480I(525I) 2. 720*480 15.750 60.000 13.514 SDTV, DVD 480I(525I) 3. 720*576 15.625 50.000 13.500 SDTV, DVD 576I(625I) 50Hz 4. 720*480 31.470 59.940 27.000 SDTV 480P 5. 720*480 31.500 60.000 27.027 SDTV 480P 6. 720*576 31.250 50.000 27.000 SDTV 576P 50Hz 7. 1280*720 44.960 59.940 74.176 HDTV 720P...

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LG 29LN45 Manual Page 10 Page 10 - 10 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes ADJUSTMENT INSTRUCTION 1. Application Range This document is applied to LA31R / LD31S chassis LED TV  which  is  manufactured  in  TV(or  Monitor)  Factory  or  is  produced on the basis of this data. 2. Designation (1)  The  adjustment  is  accor...

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LG 29LN45 Manual Page 11 Page 11 - 11 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.1. EDID Process 3.1.1. EDID download (1) Press "Power only" key of service remote control. (2) Press the ADJ KEY on R/C and enter EZ ADJUST (3)  Enter EDID D/L mode by pushing "►" key at "11. EDID D/L". (4) EDID download is executed automatically. (5) Press EXIT key on service remote control. <Caution> -  Never connect HDMI & D-sub Cable when down...

12 LG 29LN45 Page 12

LG 29LN45 Manual Page 12 Page 12 - 12 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes => Check the Download to CI+ Key value in LG set. (1) Check the method of CI+ Key value 1) Check the method on Instart menu 2) Check the method of RS232C Command  a. Into the main ass’y mode(RS232: aa 00 00) b. Check the key download for transmitted command          (RS232: ci 00 10) c. Result value - Normally status for download : OKx - Abnormally status for download : NGx (2) Check the m...

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LG 29LN45 Manual Page 13 Page 13 - 13 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.3. Function Check 4.3.1. Check display and sound ■ Check Input and Signal items. (cf. work instructions)  1) TV 2) AV (SCART/CVBS) 3) COMPONENT (480i) 4) RGB(PC : 1366 x 768 @ 60Hz) 5) HDMI(PC : 1366 x 768 @ 60Hz) 6) PC Audio In  * Display and Sound check is executed by Remote control * Caution :  Not to push the INSTOP KEY after completion ...

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LG 29LN45 Manual Page 14 Page 14 - 14 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.5. DPM Operation check ■ Measurement Condition: [email protected] 50/60Hz (1)  Set  Input  to  RGB-PC  and  connect  D-sub  cable  to  set  -  RGB Mode.  Set Input to HDMI(with Input Label set to PC) and connect  HDMI cable to set - HDMI Mode (2) Cut off H sync...

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LG 29LN45 Manual Page 15 Page 15 - 15 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes TROUBLE SHOOTING 1. No Power Check  C820 All Voltage Level (19V) Check Power connector OK ? Replace Adapter N N Check IC802 output Voltage Level (12V) Replace IC802 & Recheck N Check  IC809 Output Voltage Level (3.3V_ST)  Replace  IC809 N Y Check  IC800 Output Voltage Level (5V)  Re...

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LG 29LN45 Manual Page 16 Page 16 - 16 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 2. No Picture Module  Back Light On ? Check WLED_ENABLE high R131 Check IC101 Replace Main Scaler IC N N Check Panel clock P601(#9,10) Check IC101 Repair Main B/D N Check Panel power P601(#27,28,29,30) 12V IC804Output 12V Replace  IC804 N Y Replace T-con Board or module  Check FFC Cable for&...

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LG 29LN45 Manual Page 17 Page 17 - 17 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes (2) 29LN45*3/29LN45*B Check RF Cable Check Tuner(TU3702) Data, CLK, SYN, VAL Replace Tuner(TU3702) Recheck Y N 1. Check Tuner(TU3702 #5) Power (3.3V) 2. Check  IC803 Output voltage(3.3V) Replace IC803 Y N Check Tuner(TU3702) I2C Signal SCL(R3735),  SDA(R3736) Check IC101 Y N 1. Check Tuner(TU3702 ...

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LG 29LN45 Manual Page 18 Page 18 - 18 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 4. No Video - Component Check input signal format Is it supported? Check signal R239,R237,R241 C220,C218,C222 Replace R239,R237,R241 C220,C218,C222 Y N Check JK2800 Replace JK2800 or  Check Device Y N Y IC101 has problem Y Check Component Cable Wave form of C220 Wave form of C218 Wave form of C222 Wave...

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LG 29LN45 Manual Page 19 Page 19 - 19 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes 6. No Video - HDMI Check  input signal format Is it supported? Y Check JK501  for proper connection or damage Replace connector Y N Y Check HDMI Cable for damage  or open connector Check I2C Signal (JK501) (#15, #16) Re download EDID data  Y N Check HDCP Key (IC101) Replace...

20 LG 29LN45 Page 20

LG 29LN45 Manual Page 20 Page 20 - 20 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes LG E2 12 1- M S1 0  (M SD 80 4K K X) M st ar  M 1( L1 3) C O M P O N E N T R S- 23 2C [O pt io n  : O nl y  ho te l m od el ] R G B M AX 32 32 C D R D SU B _R /G /B /H /V Au di o  IN H P  L  &  R  o ut C O M P _Y  ,  P b  ,P r C O M P _L  &  R _I N U SB   ( Jp eg ,M P 3, D VI X) AP 21 91 D SG LG IT  H AL F  l N IM (D ...

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LG 29LN45 Manual Page 21 Page 21 - 21 - LGE Internal Use Only Copyright  ©    LG Electronics. Inc. All rights reserved. Only for training and service purposes A2 A31 900 200 400 401 540 521 800 910 120 300 501 531 510 51 1 301 LV 1 801 EXPLODED VIEW Many electrical 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 ...

22 LG 29LN45 Page 22

LG 29LN45 Manual Page 22 Page 22 THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. PCM_D[0] PCM_A[3] CI_TS_DATA[0] CI_TS_DATA[4] PCM_A[5] PCM_A[2] FE_TS_DATA[5] FE_TS_DATA[6] PCM_A[4] PCM_A[7] CI_TS_DATA[6] CI_TS_DATA[3] PCM_A[9] PCM_D[5] CI_TS_DATA[2] PCM_A[2] CI_TS_DATA[1] PCM_A[10] PCM_D[1] PCM_A[5] FE_TS_DATA[4] FE_TS_DATA[0] PCM_A[7] P...

23 LG 29LN45 Page 23

LG 29LN45 Manual Page 23 Page 23 THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. AMP_SCL SCART1_Lout AVDD_NODIE C40650.047uF25V (NON_BR)HALF_NIM +1.5V_DDR C283 0.1uF R246 33 DSUB_HSYNC AUD_LRCH AVDD_AU33 C213 0.047uF EU L202 BLM18SG121TN1D  HDMI_ARC C4064 0.1uF (NON_BR)HALF_NIM R231 68 AUD_MASTER_CLK_0 R4024 510 IF_N_MSTAR 10uF C293 ...

24 LG 29LN45 Page 24

LG 29LN45 Manual Page 24 Page 24 THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. CI_TS_CLK SCART1_DET PCM_A[11] PCM_D[7] CI_TS_DATA[6] SC1_R+ /CI_CD1 SC1_CVBS_IN CI_TS_DATA[5] CI_TS_DATA[3] /PCM_REG SC1_R_IN /PCM_IRQA SCART1_MUTE PCM_D[4] DTV/MNT_VOUT CI_TS_DATA[7] PCM_A[9] PCM_RST PCM_D[0] PCM_D[1] PCM_D[2] CI_TS_DATA[4] /PCM_CE PCM_A[13...

25 LG 29LN45 Page 25

LG 29LN45 Manual Page 25 Page 25 U S B   D O W N   S T R E A M THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. INTERFACE IC400 AP2191DSG 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_1 7 OUT_2 8 NC USB_DM 1:AL8 JP411 C422 0.33uF 16V Hotel_Model(RS232C apply) PM_TXD +3.3V_ST L403 BLM15BD121SN1  VA420 20V D416 MMBD6100 A2 C A1 VA424 2...

26 LG 29LN45 Page 26

LG 29LN45 Manual Page 26 Page 26 THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. HDMI 5     12 DDC_SCL_2 D502 MMBD6100 A 2 C A 1 R520100 R522 2.7K HDMI_CEC R521 2.7K CEC_REMOTE_S7 +5V_Normal DDC_SDA_2 5V_HDMI_2 R534 10K LN4500 D507RCLAMP0524PA (OPT)ESD_HDMI_SEMTECH(DEV) 1 8 2 7 3 6 4 5 9 10 DDC_SCL_2 D1-_HDMI2 HPD2 R509100 LN450...

27 LG 29LN45 Page 27

LG 29LN45 Manual Page 27 Page 27 THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. MODULE&CONTROL C6071000pF50V JP604 LVA_CKM D600 30V R 6 2 6 4 . 7 K JP610 C6050.1uF50V +3.3V_ST LVA_CKP R601 10K LVA_1P R618 22 (OPT)IR_OUT C604 1000pF (OPT)IR_OUT R621 10K (OPT)IR_OUT +3.3V_ST R602 10K IR C600 0.1uF 50V JP607 JP601 R 6 2 4 4 . 7 K JP605 ...

28 LG 29LN45 Page 28

LG 29LN45 Manual Page 28 Page 28 THERMAL THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. AUDIO AMP 7     13 R702 12 L709 NRS6045T100MMGK Audio_Coil_ABCO 10.0uH SB_MUTE 0.1uF C739 50V C743 1uF25V 0.1uF C704 16V OPT AUD_LRCH C70833pF50V +19V_AMP_VCC R727 5.1K Q702 MMBT3906(NXP)  E B C +19V R73812K D710 KDS226 A AC C C72447uF2...

29 LG 29LN45 Page 29

LG 29LN45 Manual Page 29 Page 29 THERMAL THERMAL THERMAL THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. POWER +2.5V_Normal C850150pF50V OPT +3.3V_ST C8660.1uF50V +3.3V_Normal R877 1 OPT R865 1 R846 12K 1% MULTI_ON C8240.01uF50V (BR)FULL_NIM PANEL_CTL POWER_ON/OFF1 C819 0.47uF 16V OPT R842 33K C85247uF25V R89247K R818 8.2K C8380.033u...

30 LG 29LN45 Page 30

LG 29LN45 Manual Page 30 Page 30 THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC. DDR_256 12    13 A-MDQL3 B-MDQU3 B-MA12 B-MDQL2 A-MVREFCA B-MRASB R1225 1K 1% B-MDQU6 B-MCKB B-MA5 B-MA7 A-MDQSUB C1219 1uF A-MA8 +1.5V_DDR A-MDQU5 A-MDQL0 C1230 0.1uF R1224 1K 1% R1204 1K 1% A-MWEB A-MDQL7 A-MRASB C1248 0.1uF C1229 0.1uF C1209 0.01...

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