Internal Use Only North/Latin America Europe/Africa Asia/Oceania http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LD0AW MODEL : 32CS669C 32CS669C-ZD CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS CONTENTS .............................................................................................. 2 PRODUCT SAFETY ..................................................................................3 SPECIFICATION ........................................................................................6 ADJUSTMENT INSTRUCTION .................................................................9 TROUBLE SHOOTING ............................................................................
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. Removal 1.
SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification is applied to the LCD TV used LD0AW chassis. 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.
5. Component Video Input (Y, CB/PB, CR/PR) No. Specification Resolution H-freq(kHz) Remark V-freq(Hz) 1. 720x480 15.73 60.00 SDTV,DVD 480i 2. 720x480 15.63 59.94 SDTV,DVD 480i 3. 720x480 31.47 59.94 480p 4. 720x480 31.50 60.00 480p 5. 720x576 15.625 50.00 SDTV,DVD 625 Line 6. 720x576 31.25 50.00 HDTV 576p 7. 1280x720 45.00 50.00 HDTV 720p 8. 1280x720 44.96 59.94 HDTV 720p 9. 1280x720 45.00 60.00 HDTV 720p 10. 1920x1080 31.25 50.00 HDTV 1080i 11.
7. HDMI Input (PC/DTV) (1) DTV Mode No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 1. 720*480 31.469 / 31.5 59.94 / 60 27.00 / 27.03 SDTV 480P 2. 720*576 31.25 50 54 SDTV 576P 3. 1280*720 37.500 50 74.25 HDTV 720P 4. 1280*720 44.96 / 45 59.94 / 60 74.17 / 74.25 HDTV 720P 5. 1920*1080 33.72 / 33.75 59.94 / 60 74.17 / 74.25 HDTV 1080I 6. 1920*1080 28.125 50.00 74.25 HDTV 1080I 7. 1920*1080 26.97 / 27 23.97 / 24 74.17 / 74.25 HDTV 1080P 8.
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 LD0AW 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.
* After downloading, have to adjust Tool Option again. (1) Push “IN-START” key in service manual control. (2) Select ‘Tool Option 1’ and push ‘OK’ key. (3) Punch in the number. (Each models has their number.) (4) Correction Tool option is completed. 3.3. EDID data (1) FHD RGB EDID data 00 • Enter ‘EZ ADJUST’ mode by pushing ‘ADJ’ key, • Enter Internal ADC mode by pushing ‘G ’ key at “7. ADC Calibration”.
3.4. Function Check • Auto adjustment Map(RS-232C) RS-232C COMMAND [CMD ID DATA] Wb 00 00 White Balance Start Wb 00 ff White Balance End (1) Check display and sound - Check Input and Signal items. (cf. work instructions) 1) TV 2) AV 3) COMPONENT1/2 (480i) 4) RGB (PC : 1024 x 768 @ 60hz) 5) HDMI 6) PC Audio In * Display and Sound check is executed by remote control. RS-232C COMMAND MIN [CMD ID DATA] Not to push the INSTOP key after completion if the function inspection.
6. Model name & Serial number D/L 4.2. EYE-Q function check Step 1) Turn on the TV set. Step 2) Press “EYE” key on Adjustment remote control. Step 3) Cover the Eye Q sensor at the front of set for 6 seconds. Step 4) Check the value of Sensor Data. It must be below 10. If not so, the Eye Q sensor may have some defect. Change the Eye Q sensor. Step 5) Wait for 6 seconds after withdrawing form the Eye Q sensor. Step 6) Check the value of Backlight. It must rise.
* 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 the Factory model name(ex 32LV3400-ZG) or Serial number like photo. 4) Check the model name Instart menu. -> Factory name displayed.
TROUBLESHOOTING 1. Power-up boot check Check stand-by Voltage. P403 9~12pin : +3.5V_ST No ok Check Power connector. Main B/D 3.5V Line Short Check ok Replace Power board. ok Check Micom Voltage. L404 : +3.5V No Replace L404. ok No Check X201 clock. 24 MHz Replace X201. ok No No Check P403 PWR_ON. 1pin : 3.3V Re-download software. Replace Mstar(IC101) or Main board. ok No Check Multi Voltage. P403 2pin:24V, 17pin:12V Replace Power Board. ok Check IC402/3/7 Output Voltage. IC402 : 2.
2. Digital TV Video Check RF Cable & Signal ok No Check Tuner 3.3V Power L3703 Replace L3703. ok Check Tuner 1.8V Power IC3703 2 pin : 1.8V No Replace IC3703. ok Check IF_P/N Signal TU3700 10/11 Pin No Bad Tuner. Replace T uner. ok No Check Mstar LVDS Output. Replace Mstar(IC101) o r Main Board. 3. Analog TV Video Check RF Cable & Signal. ok No Check Tuner 3.3V Power. L3703 Replace L3703. ok Check Tuner 1.8V Power. IC3703 2 pin : 1.8V No Replace IC3703. ok Check CVBS Signal.
4. AV Video Check input signal format. Is it supported? ok Check AV Cable for damage for damage or open conductor. ok Check JK1604 CVBS Signal Line R246. No Replace Jack. ok No Check CVBS_DET Signal. Replace R1666. ok No Check Mstar LVDS Output. Replace Mstar(IC101) or Main Board. 5. Component Video Check input signal format. Is it supported? ok Check Component Cable for damage or open conductor. ok Check JK1601 or 1603 Y/PB/ PR signal Line. No Replace Jack. ok No Check COMP_DET Signal.
6. SCART Video Check input signal format. Is it supported? ok Check Component Cable for damage or open conductor. ok Check JK1602 R/G/B and sync signal Line. No Replace Jack. ok Check SC1_DET Signal. No Replace R1614. ok Check Mstar LVDS Output. No Replace Mstar(IC101) or Main Board . 7. RGB Video Check input signal format. Is it supported? ok Check RGB Cable conductors for damage or open conductor. ok Check EDID I2C Signal R138, R139(SDA,SCL).
8. HDMI Video Check input signal format. Is it supported? ok Check HDMI Cable conductors for damage or open conductor. ok Check EDID R4033,R4034,R4035,R4036, R4037,R4038 I2C Signal. No Replace the defective IC or re-download EDID data. ok No Check JK801, JK802, JK803. Replace Jack. ok No Check HDMI_DET(HPD). Replac e R830,R828,R862. ok Check HDCP EEPROM(IC103) Power & I2C Signal No Replace the defective IC. ok No Check HDMI Signal. Check other set. If no problem, check signal line.
9. All Source Audio Check the TV Speaker Menu. (Menu -> Sound -> TV Speaker) Off Toggle the Menu. On Check AMP IC(IC501) Power 24V or 20V or 15V, 3.3V No Replace Amp IC(IC501). ok No Check Mstar AUDIO_MASTER_CLK R148. Replace Mstar(IC101) o r Main Board. ok Check AMP I2C Line R140, R141. No Check signal line. Or replace Mstar(IC101). ok Check Mstar I2S Output IC501 9,10,11 Pin. No Check signal line. Or replace Mstar(IC101). ok Check Output Signal P501 1, 2, 3, 4 pin.
10. Digital TV Audio Check RF Cable & Signal. ok No Check Tuner 3.3V Power L3703. Replace L3703. ok Check Tuner 1.8V Power. IC3703 2 pin : 1.8V No Replace IC3703. ok Check IF_P/N Signal TU3700 10/11 Pin. No Bad Tuner. Replace Tuner. ok Follow procedure ’9. All source audio’ trouble shooting guide. 11. Analog TV Audio Check RF Cable & Signal. ok No Check Tuner 3.3V Power L3703. Replace L3703. ok Check Tuner 1.8V Power IC3703 2 pin : 1.8V. No Replace IC3703. ok Check CVBS Signal TU3700 8 Pin.
12. AV Audio Check AV Cable for damage for damage or open conductor. ok No Check JK1604 & Signal Line. Replace Jack. ok Follow procedure ’9. All source audio’ trouble shooting guide. 13. Component/ SCART Audio Check Component Cable for damage or open conductor. ok Check JK1602, JK1603 & Signal Line. No Replace Jack. ok Follow procedure ’9. All source audio’ trouble shooting guide. 14. RGB Audio Check Cable conductors for damage or open conductor. ok No Check JK1102 & Signal Line. Replace Jack.
Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 22 - Side SPDIF RS-232C SIF HDMI3 AV2 USB2.
EXPLODED VIEW IMPORTANT SAFETY NOTICE 900 910 810 550 * Set + Stand * Stand Base + Body 510 511 300 A2 A4 120 A10 200 800 530 LV1 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. 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.
IC102 NAND01GW3B2CN6E +3.3V_Normal R /PF_OE E /PF_CE0 NC_8 OPT R108 1K NC_7 C101 0.1uF VDD_1 +3.3V_Normal VSS_1 NC_9 R105 1K NC_10 OPT CL OPT R104 10K /PF_CE1 AL PF_ALE W /PF_WE WP Q101 KRC103S OPT 3.
MODEL OPTION +1.10V_VDDC MODEL_OPT_3 R4031 OPT R4032 OPT 100 MODEL_OPT_4 100 MODEL_OPT_5 R4040 OPT R4039 OPT 100 MODEL_OPT_6 100 MODEL_OPT_7 0.1uF READY 0.1uF READY C4024 A8 OPT C4019 MODEL_OPT_7 0.1uF READEY OPT 0.1uF DVB_S READY OPT C4013 NON_DVB_S B8 0.1uF T24 MODEL_OPT_6 OPT C4011 MODEL_OPT_5 MODEL_OPT_2 C4006 OLED 0.1uF NON_OLED 0.1uF 3D U23 C299 MODEL_OPT_1 C292 NON_3D MODEL_OPT_4 NON_DVB_T2 DVB_T2 0.1uF T25 0.
ST_3.5V--> 3.375V --> 3.46V 20V-->3.51V --> 3.76V (3.59V) L412 PANEL_POWER 3.5V 14 GND 15 16 GND/V-sync 12V 17 18 INV ON 12V 19 20 A.DIM 12V 21 22 P.DIM1 24 Err OUT 23 SLIM_32~52 P401 SMAW200-H24S2 POWER_24_GND R475 0 1:AK10 Q407 2SC3052 OPT OPT E OPT OPT E B IC407 AP7173-SPG-13 HF(DIODES) S BLM18PG121SN1D IN 1 2 VCC INV_ON A-DIM INV_ON 6 SS 1/16W R1 1% 5 GND C467 560pF 50V C472 22uF 10V 4.7K R456 4 1% 1/16W EN Err_out NC 26/32HD:NC 2.
CONTROL IR & LED +3.5V_ST R2404 10K 1% EYEQ/TOUCH_KEY R2411 100 R2405 10K 1% OLD_SUB EYEQ/TOUCH_KEY SENSOR_SCL C2408 18pF 50V OPT L2401 BLM18PG121SN1D R2401 100 KEY1 EYEQ/TOUCH_KEY 100 L2402 BLM18PG121SN1D R2402 100 C2401 0.1uF R2412 C2402 0.1uF D2401 5.6V AMOTECH P2402 12507WR-15L 5.6V D2403 1 1 2 2 3 3 JP2407 4 4 JP2408 5 5 6 6 EYEQ/TOUCH_KEY SENSOR_SDA D2402 5.6V AMOTECH KEY2 NEW_SUB P2401 12507WR-12L C2409 18pF 50V OPT 5.6V D2404 +3.5V_ST +3.
USB_DIODES EAN61849601 IC1450 AP2191DSG L1451-*1 CIS21J121 NC L1451 MLB-201209-0120P-N2 OUT_2 8 1 $0.077 7 2 6 3 GND +5V_USB IN_1 120-ohm R1458 2K 1/8W 1% R1459 2K 1/8W 1% OUT_1 C1452 10uF 10V IN_2 C1451 22uF 16V FLG 5 4 C1453 0.1uF +3.3V_Normal EN USB1_OCD 1 2 SIDE_USB_DM 3 1 2 5 5 47 JK1450 4 3 R1454 10K R1451 USB DOWN STREAM USB DOWN STREAM 3AU04S-345-ZC-H-LG JK1450-*1 USB1_CTL USB_JACK SIDE_USB_DP 4 USB_JACK_LV3400 3AU04S-305-ZC-(LG) R1455 4.
HDMI EEPROM A1 A2 5V_HDMI_1 +5V_Normal C ENKMC2838-T112 D821 HDMI_1_ATMEL IC801 IC801-*1 R1EX24002ASAS0A R806 HDMI_1_EEPROM R874 HDMI_1 5V_DET_HDMI_1 AT24C02BN-SH-T 10K A0 1 SHIELD R896 C 20 1K 19 18 R802 1.8K 17 3.3K R804 Q802 2SC3052 C802 0.1uF 16V A1 B 8 2 R830 7 VCC A0 WP A1 1 VCC 8 $0.055 2 7 3 6 4 5 WP HPD1 10K A2 E 3 6 4 5 SCL A2 SDA GND C806 R884 R888 0.1uF 2.7K 2.
RGB/SPDIF/PC/HP New Item Development EARPHONE BLOCK HP_LOUT HEAD_PHONE C Q1101 MMBT3904-(F) E B B MMBT3904-(F) Q1104 E JK3301 KJA-PH-0-0177 +3.3V_Normal C R1155 1K 5 L 4 DETECT 3 R 1 HP_DET HP_ROUT C C R1128 1K Q1102 MMBT3904-(F) E B B C MMBT3904-(F) Q1103 E R1129 3.3K B C E SIDE_HP_MUTE Q1106 2SC3052 RGB PC PC AUDIO +3.3V_Normal 5.15 Mstar Circuit Application PEJ027-04 3 6A 7A B_TERMINAL1 4 5 7B 6B JK1103 2F01TC1-CLM97-4F PC_R_IN R_SPRING T_SPRING D1101 AMOTECH 5.
RS232C 10 5 9 4 8 R1123 100 JP1111 R1124 100 JP1112 3 +3.5V_ST 7 2 D1107 CDS3C30GTH 30V OPT D1108 CDS3C30GTH 30V OPT C1101 0.33uF C1+ V+ C1- C2+ C1104 0.1uF C2- VC1105 0.1uF DOUT2 RIN2 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 JK1101 C1106 0.1uF MAX3232CDR C1103 0.1uF 1 SPG09-DB-009 IC1101 C1102 0.
[51Pin LVDS Connector] (For FHD 60/120Hz) PANEL_VCC [30Pin LVDS Connector] (For HD 60Hz_Normal) L702 120-ohm WAFER_FHD P705 P703 FF10001-30 FI-RE51S-HF-J-R1500 WAFER_FHD 1 HD C700 10uF 16V OPT C709 1000pF 50V OPT C710 0.1uF 16V WAFER_FHD 1 OPT 2 2 3 3 4 5 5 6 7 6 RXA3- 7 RXA3+ 8 8 9 10 9 RXACK- 10 RXACK+ 11 11 RXA4- 12 RXA4+ 13 RXA3- 14 RXA3+ 12 RXA2- 13 RXA2+ 14 15 16 RXACK- 17 RXACK+ 15 RXA1- 16 RXA1+ 17 18 19 RXA2- 20 RXA2+ LVDS_SEL +3.
DDR_1333_SS_NEW P7 P3 N2 P8 P2 R8 R2 T8 R3 L7 R7 N7 T3 VREFCA P3 A2 H1 A3 VREFDQ M3 P2 A5 L8 A6 ZQ EAN61828901 J7 IC1202 H5TQ1G63DFR-H9C K7 K9 EAN61828901 A-MA0 A-MA1 A-MA2 T8 A8 A9 VDD_1 A10/AP VDD_2 A11 VDD_3 A12/BC VDD_4 A13 VDD_5 A4 A5 240 1% A7 A8 B2 D9 G7 K2 K8 N1 N9 R1 AVDD_DDR0 A6 R9 VDD_1 A9 VDD_2 A10/AP VDD_3 A11 VDD_4 A12/BC VDD_5 A13 VDD_6 VDD_7 C9 D2 E9 F1 H2 H9 L1 L9 A-MA14 T7 R3 L7 R7 N7 T3 VDDQ_2 CK CK VDDQ_4 CKE VDDQ_5 N8 M3 CS VDDQ_
+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 HOLD# SCLK SPI_SCK R1405 SI/SIO0 33 SPI_SDI Q1401 KRC103S B 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.
GP4R_GLOBAL_TUNER_BLOCK +5V_TU BOOSTER : CHINA OPT RF_SWITCH_CTL Pull-up can’t be applied because of MODEL_OPT_2 L3701 BOOSTER_OPT BLM18PG121SN1D BOOSTER_OPT R3734 BOOSTER_OPT R3743 0 10K Q3701 TU3701 TDFR-C036D DVB_1INPUT_H_LGIT CN_2INPUT_H_LG3911 C B C 3 4 5 6 4 SCL 5 SDA 6 +3.3V 7 SIF 8 9 +1.8V 7 10 CVBS 8 11 IF_AGC 9 12 DIF[P] 10 13 DIF[N] 11 14 15 12 16 SHIELD 17 18 3 NC[RF_AGC] AS 4 5 SCL 6 SDA 7 NC[IF_TP] SIF 8 9 NC 10 VIDEO GND 11 12 1.2V 13 3.
+3.3V_Normal AMP_RESET C516 1000pF 50V 50V R521 10K C517 AUD_MASTER_CLK +24V_AMP 22000pF L502 BLM18PG121SN1D OPT R507 3.3 3 LF 4 DGND_PLL 5 GND_1 6 10K E PVDD1_1 PVDD1_2 PVDD1_3 OUT1A_1 OUT1A_2 PGND1A /RESET AD GND_IO BST1A 37 38 39 40 41 42 43 PGND1B R508 12 R515 12 33 BST1B 32 VDR1 31 VCC_5 27 PGND2A BCK 11 26 OUT2A_2 SDA 12 25 OUT2A_1 C537 0.1uF 50V C531 390pF 50V D502 1N4148W 100V OPT R509 12 4.7K C535 0.47uF 50V SPEAKER_L C538 0.
Rear AV COMPONENT2 AV_CVBS_IN REAR_AV D1619 R1654 30V 75 REAR_AV +3.3V_Normal C1648 220pF 50V +3.3V_Normal OPT C1643 47pF 50V REAR_AV R1612 10K R1615 1K COMP2_DET D1613 5.6V R1660 10K REAR_AV JK1604 PPJ233-01 D1624 5.6V OPT 4C [RD]O-SPRING 3C [RD]CONTACT L-MONO 3A 4A 5A C1646 0.1uF 16V REAR_AV [GN]E-LUG [GN]O-SPRING [WH]C-LUG D1625 5.
SIDE CVBS PHONE JACK (New Item Development) SIDE_CVBS L9903 BLM18PG121SN1D JK9901 KJA-PH-1-0177 5A [YL]E-LUG 4A [YL]O-SPRING 3A [YL]CONTACT 4B [WH]O-SPRING 3C [RD]CONTACT SIDEAV_CVBS_IN 5 M5_GND 4 M4 3 M3_DETECT 1 M1 6 M6 SIDE_CVBS R9907 75 SIDE_CVBS D9901 30V ADUC30S03010L_AMODIODE +3.3V_Normal SIDE_CVBS 10K R9911 [RD]O-SPRING 5C [RD]E-LUG SIDE_CVBS R9915 1K SIDEAV_DET C9901 100pF SIDE_CVBS OPT D9902 5.
* 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] EAG41860102 P1901 P1902 10067972-050LF 10067972-000LF CI_SLOT_JACK 35 2 CI_DATA[3] 37 3 38 4 CI_DATA[4] CI_DATA[5] CI_TS_DATA[5] 39 5 CI_DATA[6] CI_TS_DATA[6] CI_TS_DATA[7] 40 6 41 7 42 8 100 33 R1905 10K CI_DATA[7] R1919 47 9 10 CI_ADDR[11] 45 11 CI_ADDR[9] 12 47 13 CI_ADDR[13] CI_MDI[1] 48 14 CI_ADDR[14] 49 15 50 16 51 17 52 18 0
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. Only for training and service purposes GAS3-*2 GAS3-*3 GAS3-*4 12.5T_GAS 7.5T_GAS MDS62110205 GAS4-*2 9.5T_GAS MDS62110214 GAS4-*3 GAS4-*4 12.