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LG DU-30LZ30 Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : AL-03HA
MODEL : DU-30LZ30
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG DU-30LZ30

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : AL-03HA MODEL : DU-30LZ30 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 TIMING CHART ..................9 ADJUSTMENT INSTRUCTION ...............10 SVC REMOCON ..................13 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................17 WIRING DIAGRAM ..................19 EXPLODED VIEW .................. 21 EXPLODED VIEW PARTS LIST ..............22 REPLACEMENT PARTS LIST ............... 23 SVC.

  • Page 3: Product Safety

    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 Replacement Parts List. 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.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service should be used to help reduce the incidence of component manual and its supplements and addenda, read and follow the damage caused by static by static electricity. SAFETY PRECAUTIONS on page 3 of this publication. 1.
  • Page 5 c. Quickly move the soldering iron tip to the junction of the Fuse and Conventional Resistor component lead and the printed circuit foil, and hold it there Removal/Replacement only until the solder flows onto and around both the 1. Clip each fuse or resistor lead at top of the circuit board hollow component lead and the foil.

  • Page 6: Specification

    NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test and Inspection method This specification is applied to ML-027C chassis. (1) Capacity: Follow LG electronics TV Testing Standard. (2) Another Required Standard 2. Requirement for Test EMI: Following CE Standard(EN55020,EN55013)
  • Page 7 Set Password New/Confirm Block Ch. Movie Rating G/PG/PG-13/R/NC-17/X TV Rating-Children Age/Fantasy Violence TV Rating-General Age/Dialogue/Language/Sex/Violence Aux.Block Video1/Video2/Component1/Component2/RGB/DVI Etc. Comb Filter 3D Comb(main), 4H Comb(sub) 3D comb for main display, 4H comb for sub display Remocon LG code - 7 -...
  • Page 8 6.Component Video Input(Y, C Resoluton H-freq(kHz) V-freq(kHz) Pixel clock Proposed 640 x 480 15.73 60.00 SDTV. DVD 480I 704 x 480 31.47 59.94 SDTV 480P 1280 x 720 45.00 60.00 HDTV 720P 1280 x 720 44.96 59.94 HDTV 720P 1920 x 1080 33.75 60.00 HDTV 1080I...

  • Page 9: Timing Chart

    8.DVI Input(PC/DTV) Resoluton H-freq(kHz) V-freq(kHz) Pixel clock Proposed 640 x 350 31.468 70.09 25.17 720 x 400 31.469 70.08 28.32 720 x 400 37.927 85.03 35.50 640 x 480 31.469 59.94 25.17 VESA(VGA) 640 x 480 37.861 72.80 31.50 VESA(VGA) 640 x 480 37.500 75.00...

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Scope of Application (3) EDID data for RGB of AL-03HA These specifications are applied to all LCD TV models employing an AL-03HA EDID table = chassis. 01 02 03 07 08 09 0A 0B 0C 0D 0E 0F 2.
  • Page 11 4.3 Adjust Color Temperature (White Balance) VPX3226 1. Contrast(MAIN) (1) Devices Used 2. Contrast(Sub) Color analyzer (CA-100 or equivalent) Automatic adjustment device (Necessary for automatic adjustment. Should be compatible with RS-232C communication.) AV pattern generator US 6CH US 6CH (2) Instrument Interconnection (For automatic adjustment) 3) At first adjust 1.
  • Page 12 EDID ADJUSTMENT Windows EDID V1.0 User Manual 2. EDID Read & Write 1) Run WinEDID.exe Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don’t need setup Windows 2000, XP => Need to Port Setup. This program is available to LCD Monitor only. 1.

  • Page 13: Svc Remocon

    SVC REMOCON To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function. MUTE To check TV screen image easily.

  • Page 14: Troubleshooting

    TROUBLESHOOTING No Power Check the Fail condition of the power- Connect the connectors related connectors. Pass Measure standby Measure digital Fail voltage: reference voltage: 6V at D_board P810 24V at line filter P810 pin no. 1 pin no. 1 Pass Replace D_power_board Measure standby Measure analog...
  • Page 15 No Raster Measure standby Check no. power. voltage: Replace D_board 6V at D_board P810 pin (Go to No power) Fail Pass no. 1 Pass Measure standby voltage: Check no. power. Replace A_board 6V at A_board P818 Fail (Go to No power) Pass pin no.
  • Page 16 No Sound Check Measure A_power board trans sound supply: Replace output: 18V at A_board P821 4V at D_power_board P815 D_power_board Fail Fail pin no. 3 pin no. 4 Pass Pass Check if A_board 18V is short- circuited: Replace A_board Resistance between A_board Fail P821 pin no.

  • Page 17: Block Diagram

    BLOCK DIAGRAM - 17 -...
  • Page 18 BLOCK DIAGRAM DESCRIPTION ATSC/NTSC tuner (TDVB-001P) can receive both terrestrial analog and terrestrial digital signals. But a NTSC tuner (6700NFNS06C) can receive terrestrial analog only. Therefore if you run two displays at the same time, it is not possible to see two digital channels. A/V SW (CXA2069) is the IC that takes external input terminal signals and broadcast signals from the tuners and handles them selectively.

  • Page 19: Wiring Diagram

    - 19 -...
  • Page 20 MEMO - 20 -...

  • Page 21: Exploded View

    - 21 -...

  • Page 22: Exploded View Parts List

    PWB(PCB) ASSEMBLY, SUB, DU-30LZ30 ETC TOTAL BRAND SIDE A/V 4950TKK853A METAL, SUPPORT INDEX PCB DN-30LZ30 6871TST604A PWB(PCB) ASSEMBLY, SUB, DU-30LZ30 LED & P/SW TOTAL BRAND . 6871TST681A PWB(PCB) ASSEMBLY, SUB, SAP MU2 LED & P/SW TOTAL BRAND . 6871TST680A PWB(PCB) ASSEMBLY, SUB, SCPLMC2 LED & P/SW TOTAL BRAND .

  • Page 23: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip)
  • Page 24 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C729 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C943 0CH3103K516 10000PF 50V 10% B(Y5P) 2012 R C730 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C951...
  • Page 25 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C688 0CE108EJK18 "1000UF KMG,RD 35V 20%,-20% FL" ZD113 0DZ510009EE UDZ S 5.1B TP ROHM-K SOD323 2 C689 0CE108EJK18 "1000UF KMG,RD 35V 20%,-20% FL"...
  • Page 26 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L815 6210TCE001G HH-1M3216-501 CERATEC 3216MM Q832 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - - L816 6210TCE001G HH-1M3216-501 CERATEC 3216MM Q833 0TR150400BA CHIP 2SA1504S(ASY) BK KEC - -...
  • Page 27 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R156 0RH0822D622 82 1/10W 5 D.R/TP R1858 0RH4700D622 470 1/10W 5 D.R/TP R157 0RH0822D622 82 1/10W 5 D.R/TP R1859 0RH5600D622 560 1/10W 5 D.R/TP R158...
  • Page 28 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R670 0RH0221D622 2.2 1/10W 5 D.R/TP R884 0RH2200D622 220 1/10W 5 D.R/TP R673 0RH0101D622 1.0 1/10W 5 TA R885 0RH4702D622 47K 1/10W 5 D.R/TP R674...
  • Page 29 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1904 0RH1501D622 1.5K OHM 1 / 10 W 2012 5.00% X902 6202VDT002H SX-1 SUNNY 18.432000MHZ +/-30 R1908 0RH1501D622 1.5K OHM 1 / 10 W 2012 5.00% R1911...
  • Page 30 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C110 0CH5821K416 820PF 50V 5% NP0 2012 R/TP C229 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C111 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C230...
  • Page 31 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C291 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C415 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C292 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C417...
  • Page 32 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C680 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C926 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C681 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C301...
  • Page 33 0CH8477F691 470UF MVK 16V 20% SMD R/TP(SM IC314 0IMCRXL004A XC95288XL-10TQ144C XILINX 14 C837 0CH8476F691 47UF 16V 20% 105STD (CYL) R/T IC315 0ICTMLG013A LGDT1901A LG IC 24P SSOP TRAY C840 0CH8476F691 47UF 16V 20% 105STD (CYL) R/T IC316 0IMCRCY002A CY2309SC-1HT CYPRESS SOIC 16P C842...
  • Page 34 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION B550 0LCML00002A MLB-321611-0120A-N1 MAG LAYER Q801 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - - B551 0LCML00002A MLB-321611-0120A-N1 MAG LAYER Q802 0TR150400BA CHIP 2SA1504S(ASY) BK KEC - -...
  • Page 35 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R179 0RH0000D622 0 1/10W P-TYPE TAPPING R397 0RH0272D622 27 1/10W 5 D.R/TP R183 0RH4701D622 4.7K 1/10W 5 D.R/TP R430 0RH0000D622 0 1/10W P-TYPE TAPPING R184...
  • Page 36 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R807 0RH1000D622 100 1/10W 5 D.R/TP AR402 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% R/TP R808 0RH1000D622 100 1/10W 5 D.R/TP AR403...
  • Page 37 DATE: 2004. 4. 29. DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R164 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% D R325 0RH2201D622 2.2K OHM 1 / 10 W 2012 5.00% R165 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% D R326...
  • Page 38 TU101 6700NFNS04D TDVB-H751P LG INOTEK ATSC/NTS R880 0RH2201D622 2.2K OHM 1 / 10 W 2012 5.00% TU102 6700VNF019E TAFH-H001P LG NTSC FS . R881 0RH2201D622 2.2K OHM 1 / 10 W 2012 5.00% LED & P/SW BOARD R884 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% D R885 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% D...
  • Page 39 0RH0392D622 39 1/10W 5 D.R/TP R1230 0RH0392D622 39 1/10W 5 D.R/TP R1235 0RH4701D622 4.7K 1/10W 5 D.R/TP SW1501 140-313B TACT 2LEAD 160G(TA) LG C&D NO R1236 0RH0392D622 39 1/10W 5 D.R/TP SW1502 140-313B TACT 2LEAD 160G(TA) LG C&D NO R1237 0RH4701D622 4.7K 1/10W 5 D.R/TP...
  • Page 40 DATE: 2004. 4. 29. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R2105 0RH0752D622 75 1/10W 5 D.R/TP R2106 0RH0752D622 75 1/10W 5 D.R/TP R2107 0RH4703D622 470K 1/10W 5 D.R/TP R2108 0RH5101D622 5.1K 1/10W 5 D.R/TP R2109 0RH5101D622 5.1K 1/10W 5 D.R/TP R2110 0RH4703D622 470K 1/10W 5 D.R/TP ZD2101 0DZ510009EE UDZ S 5.1B TP ROHM-K SOD323 2...
  • Page 41 2004.03.19...
  • Page 47 Apr., 2004 P/NO : 3828TSL101Y Printed in Korea...

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