Internal Use Only North/Latin America Europe/Africa Asia/Oceania http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LD2AA MODEL : 22LT360C 22LT360C-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS CONTENTS . ............................................................................................. 2 SAFETY PRECAUTIONS ......................................................................... 3 SERVICING PRECAUTIONS ................................................................... 4 SPECIFICATION ....................................................................................... 6 ADJUSTMENT INSTRUCTION ................................................................
SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE 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 same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.
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 precautions. Remember: Safety First. General Servicing Precautions 1.
IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit 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. 3. Solder the connections.
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 LD2AA chassis. 3. Test method 2. Requirement for Test 1) Performance: LGE TV test method followed 2) Demanded other specification - Safety : CE, IEC specification - EMC : CE, IEC Each part is tested as below without special appointment.
No. 6 Item RGB Input 7 HDMI Input (3EA) 8 9 Audio Input (1EA) SDPIF out (1EA) 10 USB (1EA ) Specification RGB-PC HDMI1-DTV/DVI HDMI2-DTV HDMI3-DTV RGB/DVI Audio SPDIF out EMF, DivX HD, For SVC (download) Remarks Analog(D-SUB 15PIN) PC(HDMI version 1.3) Support HDCP The number of Input ports is different by model.
5.2. RGB Input (PC) 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 1280*768 47.776 59.870 79.50 CVT(WXGA) X 7 1360*768 47.712 60.015 85.50 VESA (WXGA) X 8 1280*1024 63.981 60.020 108.0 VESA (SXGA) O 9 1600*1200 75.00 60.
ADJUSTMENT INSTRUCTION 1. Application Range (4) Click "Connect" tab. If "Can't" is displayed, check connection between computer, jig, and set. This specification sheet is applied to all of the LCD TV with LD2AA chassis. (2) (3) 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. (2) Power adjustment : Free Voltage. (3) Magnetic Field Condition: Nil.
3.1. ADC Process (1) ADC - Enter Service Mode by pushing "ADJ" key, - Enter Internal ADC mode by pushing "►" key at "7. ADC Calibration". EZ ADJUST 4. Total Assembly line process 4.1. Adjustment Preparation ADC Calibration 0. Tool Option1 ADC Comp 480i NG 1. Tool Option2 ADC Comp 1080p NG 2. Tool Option3 ADC RGB NG 3. Tool Option4 4. Tool Option 5 Start Reset 5. Country Group 6. Area Option 7. ADC Calibration ඖ 8. White Balance 9.
4.4.
(1) HD RGB EDID data 00 10 20 30 40 50 60 70 80 90 A0 B0 C0 D0 E0 F0 0 00 f.
5. Model name & Serial number D/L ▪ Press "Power on" key of service remote control. (Baud rate : 115200 bps) ▪ Connect RS232 Signal Cable to RS-232 Jack. ▪ Write Serial number by use RS-232. ▪ Must check the serial number at the Diagnostics of SET UP menu. (Refer to below). 4) Check the model name Instart menu. → Factory name displayed. (ex 42LD450-ZA) 5) Check the Diagnostics.(DTV country only) → Buyer model displayed.(ex 42LD450) 5.1. Signal Table CMD LENGTH ADH ADL DATA_1 ...
6. CI+ Key Download method 2. Check the method of CI+ key value (RS232) 1) Into the main ass’y mode (RS232 : aa 00 00) 6.1. Download Procedure (1) Press "Power on" key of a service R/C. (Baud rate : 115200 bps) (2) Connect RS232-C Signal Cable. (3) Write CI+ Key through RS-232-C. (4) Check whether the key was downloaded or not at ‘In Start’ menu. (Refer to below).
TROUBLE SHOOTING 1.
3. Analog TV Video ʹΙΖΔΜ͑ΥΙΖ͑ͷ͑ΔΒΓΝΖ͑ΒΟΕ͑ͷ͑ΤΚΘΟΒΝ͑ Ί ΖΤ ʹΙΖΔΜ͑ΥΙΖ͑΅ΦΟΖΣ͑ͤͤ͟· ͑ ͬ͑ͽͤͨͤ͡ ͿΠ ͶΩΔΙΒΟΘΖ͑ΥΙΖ͑ͽͤͨͤ͡ ͿΠ ͶΩΔΙΒΟΘΖ͑ΥΙΖ͑ͺʹͤͨͤ͡ ͿΠ ͶΩΔΙΒΟΘΖ͑ΥΙΖ͑΅ΦΟΖΣ ͿΠ ͶΩΔΙΒΟΘΖ͑ΥΙΖ͑;ΤΥΒΣ͙ͺʹ͚͢͢͡ Σ͑;ΒΚΟ͑ΓΠΒΣΕ Ί ΖΤ ʹΙΖΔΜ͑ΥΙΖ͑΅ΦΟΖΣ͑ͩ͢͟· ͺʹͤͨͤ͑ͣ͡ΡΚΟ͑ͫ͑ͩ͢͟· Ί ΖΤ ʹΙΖΔΜ͑ΥΙΖ͑ʹ· ͳ΄͑ΤΚΘΟΒΝ͑ ΅Άͤͨͥ͑ͩ͡ΡΚΟ Ί ΖΤ ʹΙΖΔΜ͑ΥΙΖ͑ͽ· ͵΄͑ΠΦΥΡΦΥ͑ΤΚΘΟΒΝ͑ΠΗ͑;ΤΥΒΣ͑ͺʹ 4.
5.
7.
9. AV Audio ʹΙΖΔΜ͑ΥΙΖ͑Ͳ·͑ΔΒΓΝΖ͑ΚΤ͑ΕΖΗΖΔΥΚΧΖ Ί ΖΤ ʹΙΖΔΜ͑ΥΙΖ͑ΤΚΘΟΒΝ͑ΠΗ͑ͻͼͧ͢͢͡ ͧͩͥ͑ͧͩͦ͢͢͝ ͿΠ ͶΩΔΙΒΟΘΖ͑ΥΙΖ͑Ͳ·͑ͻΒΔΜ ͿΠ ͶΩΔΙΒΟΘΖ͑ΥΙΖ͑Ͳ·͑ͻΒΔΜ Ί ΖΤ ͺΞΡΝΖΞΖΟΥ͑ΥΙΖ͑Ͳ͑ͩ͟גΦΕΚΠ͑ΠΗ͑ΒΝΝ͑ΚΟΡΦΥ͑ד Η͑;ΒΝΗΦΟΔΥΚΠΟ͑ΘΦΚΕΖ 10. RGB Audio ʹΙΖΔΜ͑ΥΙΖ͑ʹΠΞΡΠΟΖΟΥ͑ΔΒΓΝΖ͑ΚΤ͑ΕΖΗΖΔΥΚΧΖ Ί ΖΤ ʹΙΖΔΜ͑ΥΙΖ͑ΤΚΘΟΒΝ͑ΠΗ͑ͻͼͣ͢͢͡ Ί ΖΤ ͺΞΡΝΖΞΖΟΥ͑ΥΙΖ͑Ͳ͑ͩ͟גΦΕΚΠ͑ΠΗ͑ΒΝΝ͑ΚΟΡΦΥ͑ד Η͑;ΒΝΗΦΟΔΥΚΠΟ͑ΘΦΚΕΖ Copyright © LG Electronics. Inc. All rights reserved.
Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes - 20 - External SPK Out SPK L/R RS- 232C RGB PC AV PC/DVI Audi In HDMI(DVI) 1/2 TUNER (TDSS G101D) MAX3232 RGB/H/V CVBS, L/R L/R TMDS TMDS TI AMP A. AMP NTP7400 L/R I2S RS232C Rear IRout - Path(Pin 4) SIF TU_CVBS IF S7LR Xtal 24M TMDS DP/DM I2C DDR2 Add. DDR2 Data SPI PCM_A[0:7] HDMI3 USB2.
EXPLODED VIEW IMPORTANT SAFETY NOTICE 910 Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes - 21 - * Set + Stand * Stand Base + Body A2 300 510 A21 A31 501 A9 500 A10 200 120 900 LV1 820 540 521 400 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.
IC102 NAND01GW3B2CN6E +3.3V_Normal +3.3V_Normal VSS_1 NC_10 OPT CL OPT R104 10K /PF_CE1 AL PF_ALE W /PF_WE WP 3.
MODEL OPTION ASIA C4068-*1 68pF 0.1uF 0.1uF C4024 0.1uF 0.1uF READY 0.1uF READY 0.1uF A8 0.1uF MODEL_OPT_7 0.1uF READEY 0.1uF DVB_S READY OPT C4019 MODEL_OPT_7 NON_DVB_S B8 OPT C4013 MODEL_OPT_6 100 T24 MODEL_OPT_6 OPT 0.
+12V/+15V New item R7530 33K 12V_PANEL R7531-*1 2.7K 5V_PANEL R7531 5.6K 12V_PANEL C E Q7505 MMBT3904(NXP) C7547 0.1uF 16V E +3.3V_Normal R7864 2.2K VCC +24V/+15V INV_CTL +3.5V_ST Q7502 MMBT3904(NXP) JK400 IC407 AP7173-SPG-13 HF(DIODES) SW +1.5V_DDR BST JPD003N-M432-4F 24V 22 R7519 5% 1/16W 5 Q7504 SI4124DY-T1-GE3(VISHAY) C472 22uF 10V C7519 1uF 25V C476 0.1uF 16V S_1 S_2 S_3 G 1 8 2 7 3 6 4 5 D_4 D_1 L7508 4.
CONTROL IR & LED P2402 12507WR-04L 1 2 3 4 +3.5V_ST 5 R2404 10K 1% R2405 10K 1% P2401 12507WR-10L L2401 BLM18PG121SN1D R2401 100 JP2407 1 KEY1 L2402 BLM18PG121SN1D R2402 100 JP2408 2 KEY2 C2401 0.1uF C2402 0.1uF D2402 5.6V AMOTECH JP2404 +3.5V_ST D2401 5.6V AMOTECH 3 L2403 BLM18PG121SN1D JP2403 +3.5V_ST 4 C2403 0.1uF 16V R2426 47K C2404 1000pF 50V R2428 22 5 JP2410 6 IR C2407 100pF 50V IR OUT D2405 5.
USB_DIODES EAN61849601 IC1450 AP2191DSG L1451-*1 CIS21J121 NC L1451 MLB-201209-0120P-N2 OUT_2 1 8 $0.077 7 2 6 3 GND +5V_USB IN_1 120-ohm R1458 2K 1/8W 5% R1459 2K 1/8W 5% OUT_1 C1452 10uF 10V IN_2 C1451 22uF 16V FLG 4 5 C1453 0.1uF +3.3V_Normal EN USB1_CTL R1454 10K R1451 47 USB1_OCD 2 SIDE_USB_DP 5 4 SIDE_USB_DM 3 1 JK1450 USB DOWN STREAM 3AU04S-345-ZC-H-LG R1455 4.
HDMI EEPROM A2 A1 5V_HDMI_1 +5V_Normal C ENKMC2838-T112 D821 5V_HDMI_1 HDMI_1 5V_DET_HDMI_1 R806 10K SHIELD R896 20 C 1K 19 1.8K 17 3.3K 18 R802 R804 Q802 MMBT3904(NXP) C802 0.1uF 16V B R830 HPD1 C806 R884 R888 0.1uF 2.7K 2.7K 10K E DDC_SCL_1 DDC_SDA_1 DDC_SDA_1 16 DDC_SCL_1 15 0 OPT R824 0 HDMI_ARC 5V_HDMI_2 +5V_Normal HDMI_CEC A2 CK-_HDMI1 12 9 8 7 6 5 4 3 2 CK+_HDMI1 D0- D0-_HDMI1 D0_GND D0+ D0+_HDMI1 D1- D1-_HDMI1 D1_GND D1+ D1+_HDMI1 D2- D2+ R889 2.
L7 N7 T3 K1 J3 K3 L3 A7 B2 D9 G7 K2 K8 N1 N9 R1 AVDD_DDR0 R9 A8 VDD_1 A9 VDD_2 A10/AP VDD_3 A11 VDD_4 A12/BC VDD_5 A13 VDD_6 VDD_7 NC_5 VDD_8 VDD_9 BA0 BA1 A1 A8 C1 C9 D2 E9 F1 H2 H9 J1 J9 L1 L9 A-MA14 T7 BA2 VDDQ_1 VDDQ_2 CK VDDQ_3 CK VDDQ_4 CKE VDDQ_5 VDDQ_6 CS VDDQ_7 ODT VDDQ_8 RAS VDDQ_9 CAS WE NC_1 NC_2 RESET B3 E1 G8 J2 J8 M1 M9 P1 P9 T1 T9 NC_4 NC_6 DQSL VSS_1 DQSU VSS_2 DQSU VSS_3 VSS_4 DML VSS_5 DMU VSS_6 VSS_7 DQL0 VSS_8 DQL1 VSS_9 DQL2 VSS_10
P4R_GLOBAL_TUNER_BLOCK SI2176_DVB_1INPUT_H 1 2 3 4 5 6 7 8 9 10 11 TU3700-*2 TDSS-G201D NC RESET SCL SDA +B1[3.3V] SIF +B2[1.8V] CVBS IF_AGC DIF[P] DIF[N] 12 1 SI2156_DVB_1INPUT_H TU3700 TDSS-G101D SI2176_ATSC_1INPUT_H TU3700-*1 TDSS-H101F 2 3 4 5 6 7 8 9 10 11 NC_1 RESET SCL SDA +3.3V_TU +B1[3.3V] NC_2 +B2[1.8V] NC_3 IF_AGC DIF[P] DIF[N] R3755 470 12 SHIELD OPT R3775 0 SHIELD R3758 82 TU_SIF 1 2 3 E NC +3.
AMP_RESET C516 1000pF 50V 50V LF GND_1 6 DGND 10K C505 1000pF 50V E PVDD1_1 PVDD1_3 OUT1A_1 OUT1A_2 PGND1A BST1A /RESET AD GND_IO PVDD1_2 38 39 40 31 VCC_5 11 26 OUT2A_2 SDA 12 25 OUT2A_1 R515 12 C530 390pF 50V L505 10.0uH L506 10.0uH R509 12 R516 C538 0.1uF 50V R517 4.7K C535 0.47uF 50V C531 390pF 50V D502 1N4148W 100V OPT C537 0.1uF 50V SPEAKER_L 4.
IC1601-*1 SN324 OUT1 1 14 OUT4 OP_AMP_AUK INV_IN1 Rear AV NON_INV_IN1 VCC NON_INV_IN2 AV_CVBS_IN D1619 30V R1654 75 C1643 47pF 50V C1648 220pF 50V OPT INV_IN2 2 13 3 12 4 11 5 10 6 9 7 8 INV_IN4 NON_INV_IN4 GND NON_INV_IN3 INV_IN3 +3.3V_Normal OUT2 OUT3 R1660 10K JK1604 PPJ233-01 5C 4C [RD]O-SPRING 3C [RD]CONTACT L-MONO 4B [WH]C-LUG 3A [YL]CONTACT D1624 5.6V OPT AV_CVBS_DET R1666 1K [RD]E-LUG OP_AMP_BCD IC1601 AS324MTR-E1 C1646 0.
RGB RGB PC +5V_Normal D1115 ENKMC2838-T112 A1 C A2 R1140 2.2K R1139 2.2K C1129 0.1uF 16V RGB_DDC_SCL RGB_DDC_SDA C1127 18pF 50V C1128 18pF 50V R1141 22 R1143 22 DSUB_VSYNC DSUB_HSYNC C1122 68pF 50V OPT C1126 68pF 50V OPT D1109 30V D1113 D1116 D1114 5.6V OPT 5.6V OPT 30V DSUB_B+ R1133 75 D1110 30V DSUB_G+ R1135 75 D1111 30V +3.3V_Normal R1146 10K DSUB_DET R1147 1K DSUB_R+ R1137 75 D1112 30V D1117 5.
RS232C 10 5 9 IR_OUT 4 8 R1123 100 JP1121 3 7 R1124 100 +3.5V_ST JP1122 2 D1107 CDS3C30GTH 30V OPT 6 D1108 CDS3C30GTH 30V OPT 1 EXT_12V C1101 0 . 3 3 u F SPG09-DB-009 IC1101 JK1101 C1106 0.1uF MAX3232CDR +3.5V_ST C1+ C1102 0.1uF C1103 0.1uF V+ C1- C2+ C1104 0.1uF C2- VC1105 0 .
PANEL_VCC 22_LVDS P706 22_LVDS L702 70-ohm FF10001-30 1 2 OPT C704 1000pF 50V 3 22_LVDS C705 0.1uF 16V 4 26_LVDS 5 OPT P705 6 7 FF10001-30 R714 0 8 1 9 2 10 3 11 OPT R713 0 4 12 5 13 RXA3+ 6 RXA3+ 14 RXA3- 7 RXA3- 15 8 16 RXACK+ 9 RXACK+ 17 RXACK- 10 RXACK- 18 11 19 RXA2+ 12 RXA2+ 20 RXA2- 13 RXA2- 21 14 22 RXA1+ 15 RXA1+ 23 RXA1- 16 RXA1- 24 17 25 RXA0+ 18 RXA0+ 26 RXA0- 19 RXA0- 27 LVDS_SEL +3.3V_Normal 20 28 OPT R712 3.
+3.5V_ST +3.5V_ST 4.7K OPT +3.5V_ST R1404 S_FLASH_MAIN_MACRONIX IC1401 MX25L8006EM2I-12G R1403 10K OPT CS# /SPI_CS 8 2 7 3 6 4 5 VCC C1401 0.1uF SO/SIO1 SPI_SDO WP# /FLASH_WP GND C R1401 1 B HOLD# SCLK SPI_SCK R1405 S I / S I O 0 33 SPI_SDI Q1401 KRC103S OPT 0 E OPT S_FLASH_MAIN_WINBOND IC1401-*1 W25Q80BVSSIG CS DO[IO1] %WP[IO2] GND THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
RJP +12V/+15V RJP L1800 S C1800 2.2uF 16V RJP R1836 1K RJP_PROTECTION RJP R1801 10K C1801 1uF 25V OPT G S KRJV9768-1001-024 RJP_PROTECTION R1834 5.1K 1 RJP R1802 10K Q1802 AO3407ARJP_PROTECTION RJP_PROTECTION R1833 5.1K RJP JK1800 C1803 22uF 16V OPT D R1800 10K RJP D Q1800 AO3407A RJP BLM18PG121SN1D RJP_PROTECTION G 100K R1835 0 R1837 RJP_PROTECTION 1 RJP_NORMAL 5 R1807 510 RJP 6 R1854 510 RJP RJP_CTRL0 RJP_CTRL1 RJP_CTRL2 RJP_CTRL3 R1812 RJP 3.9K R1811 RJP 3.
* Option name of this page : CI_SLOT (because of Hong Kong) CI Region CI SLOT +5V_CI_ON CI TS INPUT CI_DATA[0-7] CI_DATA[0-7] +5V_Normal 10K CI_SLOT EAG41860101 R1908 33 CI_TS_DATA[4] CI_TS_DATA[5] CI_TS_DATA[6] CI_TS_DATA[7] R1905 10K 36 2 37 3 38 4 39 5 40 6 41 7 42 8 43 9 CI_IORD 44 10 CI_IOWR 45 11 46 12 CI_MDI[0] 47 13 CI_MDI[1] 48 14 CI_MDI[2] 49 15 CI_MDI[3] 0.
LED driver circuit for TN module LED_DRIVER LED_DRIVER D10001 PDS5100H-13 L10001 33uH +24V_LED_driver LED_DRIVER LED_DRIVER LED_DRIVER LED_DRIVER C10001 2.2uF 50V C10002 2.2uF 50V C10005 0.1uF 50V C10021 0.1uF 50V OPT R10012 5.1 OPT C10010 1000pF 50V LED_DRIVER LED_DRIVER R10015 12 close to IC10000 G must be modifed R10016 3K 1/8W FLT C10006 2200pF C10007 50V 0.