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LCD TV

SERVICE MANUAL

CHASSIS : ML-03JB
MODEL : 42LP1D-EA
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 42LP1D-EA

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : ML-03JB MODEL : 42LP1D-EA 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..................11 ADJUSTMENT INSTRUCTION ...............12 SVC REMOCON ..................19 TROUBLE SHOOTING ................20 BLOCK DIAGRAM...................30 WIRING DIAGRAM ..................37 EXPLODED VIEW .................. 38 EXPLODED VIEW PARTS LIST ..............39 REPLACEMENT PARTS LIST ............... 40 SVC. SHEET ....................- 2 -...
  • 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 Shock, Fire, or other Hazards.
  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.
  • 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-03JB chassis. 3.1 Capacity : Follow LG electronics TV Testing Standard. 2. Requirement for Test 3.2 Another Requite Standard EMI : Following CE Standard(EN 55020)
  • Page 7 Humidity : 50% (Temp : 40°…) Operating Humidity Storage Temperature Storage Humidity LCD Panel Model Name LC420W02- B4K1 LG Philips LCD Feature TFT Active Matrix LCD panel Outline Dimension 760.0 x 450.0 x 48.0 [mm] Aspect Ratio Wide (16:9) Resolution...
  • Page 8 Item Specification Remark Unit 2 Carrier Dual BG, DK NICAM Dual BG, I, LL' DW(Double Window) Mode MW(Multi Window) Mode Film Mode Progressive Scan Motion Detection Dolby Virtual SRS WOW Ez-pip Power System PFC(power factor correction) & SMPS 4. EDID 4-1.
  • Page 9 <Table 1.> RGB and DVI-PC Input Mode - Vertical Frequency : Standard 0.5 Hz - Vertical Lines : Standard Lines Resolution H-freq(KHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark 720x400 31.469 70.08 28.32 720x400 37.927 85.03 35.50 640x480 31.469 59.94 25.17 VESA(VGA) 800x600 37.879 60.31...
  • Page 10 < Table 3.> Scart Arrangement 2.(Half Scart) Signal Signal Level Impedance Audio Output B (right) 0.5 Vrms < 1 Audio Input B (right) 0.5 Vrms > 10 Audio Output A (left) 0.5 Vrms < 1 Ground (audio) Ground (blue) Audio input A (left) 0.5 Vrms >...
  • Page 11: Timing Chart

    TIMING CHART VIDEO SYNC Dot Clock Frequency Display Sync Total Sync Back Front H / V MODE Resolution Porch ( B ) Polarity [kHz]/[Hz] ( A ) [MHz] Period( E ) ( D ) Porch(F) H(Pixels) 25.175 31.468 640 x 350 V(Lines) 70.090 H(Pixels)
  • Page 12: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 2.2.3 Operation status check 1. Scope of Application 2.2.3.1 Operation mode: Check designated This standard is applied to the 32" Wide I-DTV mode accurately operates. manufactured in the monitor factory or its equivalents. 2.2.3.2 Check of adjustment status and operation: Check the screen adjustment 2.
  • Page 13 *Check of OPTION DATA Setting (SVC MODE) - Explanation of SVC Menu EEPROM Option items Item Condition Remark Item Condition Remark Option0 OSD Lan 0 : Eng Only 200PR 0 : 100 Program 1 : 1 : 7 countries (7 countries in West Europe) 1 : 200 Program 2: 11 countries (West Europe + Northern Europe) China + Aus...
  • Page 14 1. Service Menu Overview If you press the menu button of remote control and the menu key of keypad till more 5 seconds simultaneously. Service Menu The service menu OSD will appear. This service menu contain the RGB, MSP, NSP menus and 3 optional RGB Menu RGB Menu menus that is Option 0,1,2.
  • Page 15 3. MSP Menu FM Prescale decides input signal level of FM audio signal. It is related to main Volume. MSP Menu Nicam Prescale decides input signal level of Nicam audio signal. FM Prescale FM Prescale Nicam Prescale Scart Prescale decides output signal level to speaker volume which is Nicam Prescale coming from SCART input.
  • Page 16 5. Option 0 Menu 200PR : In China, You have to change 200PR data to '1' because China has many channels in broadcast system. Option 0 Menu China+Aus : In China or Australia, you have to change China+Aus data 200PR 200PR to '1' because these two countries have different broadcast China+Aus...
  • Page 17 7. Option 2 Menu DownLoad : While downloading is performed for updating the software the main Micom should not communicate Option 2 Menu with other Ics therefore to cut off the communication between main Micom and other Ics we set the value DownLoad DownLoad of Download to '1'.
  • Page 18 9. X-Studio Menu X-Studio Version : It shows the programme version of X-studio. X-STUDIO Menu X-Studio Language : This field shows the X-studio OSD language. X-STUDIO Version X-STUDIO Version X-Studio ISP : This field shows that X-studio memory will be 1.18 1.18 ready for ISP after selecting this option and...
  • Page 19: Svc Remocon

    SVC REMOCON FUNTION REAMARK 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.
  • Page 20: Trouble Shooting

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  • Page 30: Block Diagram

    BLOCK DIAGRAM - 30 -...
  • Page 31 DIGITAL BLOCK DIAGRAM - 31 -...
  • Page 32 BLOCK DIAGRAM DESCRIPTION 1) RF/Analog mode: 4) Component mode: - Initially the signal is fed to the Analog Tuner through antenna - Initially the video signal is fed to the AN15865 switch IC and cable via RF splitter. Now, here the Audio and Video signals the audio signal is sent to the MSP4410 sound processor are separated and sent accordingly (i.e.
  • Page 33 X-STUDIO BLOCK DIAGRAM - 33 -...
  • Page 34 List of ICs and their functions 1) Processor(AT76C120) : - AT76C120 is a highly integrated solution for still-image and video play back applications. It can also operate as a video capture device for low-cost Personal Video Recording(PVR) applications. - The I S-compatible auio data interface allows the device to connect with an external stereo ADC/DAC to capture or play voice or audio.
  • Page 35 PROM (XCF02S) Display/ JACK101 (FMS3818) R,G,B,H,V Processor Capture (AT76C120) FPGA LVDS RX (XC2S200E) (THC63LVD104) LVDS TX SDRAM (THC63LVD103) (HY57V653220C) SDRAM (K4S561632E) Flash Memory (AT49BV162A) L,R,CVBS Audio DAC (UDA1334BTS) JPEG storage and playback: 1) First after inserting memory stick/card in the card slot the image data (JPEG file)is decoded and stored by the processor in the SDRAM and Flash memory.
  • Page 36 PROM (XCF02S) Display/ JACK101 (FMS3818) R,G,B,H,V Processor Capture (AT76C120) FPGA LVDS RX (XC2S200E) (THC63LVD104) LVDS TX SDRAM (THC63LVD103) (HY57V653220C) SDRAM (K4S561632E) Flash Memory (AT49BV162A) L,R,CVBS Audio DAC (UDA1334BTS) MP3 storage and playback: 1) First after inserting memory stick/card in the card slot the MP3 data is decoded and the file information is sent by the processor to the FPGA where it is stored in the 64MB SDRAM along with OSD 2) While during playback when we select any MP3 file then the data is processed by the processor and the I2S data is sent to the audio DAC IC where it is converted into analog AV_L and AV_R signals.
  • Page 37: Wiring Diagram

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  • Page 38: Exploded View

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  • Page 39: Exploded View Parts List

    PART NO. DESCRIPTION 3091TKE031E CABINET ASSEMBLY, 42LP10 BRAND 3090TKE023A (EA-SKD) 6304FLP208A LCD(LIQUID CRYSTAL DISPLAY), LC420W02-B6 LG PHILPS TFT COLOR MINI LVDS, P6 3809TKE028C BACK COVER ASSEMBLY, 42LP10 3808TKE023 (SKD-NO SERVICE LABEL) 3043TKK238C TILT SWIVEL ASSEMBLY, 42LP1D . STAND(EA), SKD 3550TKK812B...
  • Page 40: 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 41 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C349 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP 0CH3103K516 10000PF 50V 10% B(Y5P) 2012 C701...
  • Page 42 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CF47 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP CS51 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP CS52...
  • Page 43 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) S 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) S ICIP1 0ICTMLG018A LGDP4410 LG IC 176P TQFP TR 0CE477WF6DC 470UF MVK 16V 20% SMD R/TP( 0IZZTSA125A MACRONIX 48P 42LP1D-EA.SLUK C531 0CE107WF6DC 100UF MVK 16V 20% R/TP(SMD)
  • Page 44 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION ICS5 0IMCRNS007C LMS1587CS-ADJ NATIONAL SEMI L908 6210TCE001P HB-1S2012-121JT CERATECH 20 ICS7 0IMCRNS007C LMS1587CS-ADJ NATIONAL SEMI L909 6210TCE001P HB-1S2012-121JT CERATECH 20...
  • Page 45 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0LC0233002A 3.3UH CERATECH R/TP R179 0RH4700D622 470 1/10W 5 D.R/TP 0LC0233002A 3.3UH CERATECH R/TP R205 0RH3901D622 3.9K 1/10W 5 D.R/TP...
  • Page 46 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RH3301D622 3.3K 1/10W 5 D.R/TP RS83 0RH3301D622 3.3K 1/10W 5 D.R/TP 0RH3301D622 3.3K 1/10W 5 D.R/TP RS92 0RH1003D622 100K 1/10W 5 D.R/TP...
  • Page 47 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R328 0RH2200D622 220 1/10W 5 D.R/TP RF17 0RH4703D622 470K 1/10W 5 D.R/TP R338 0RH1000D622 100 1/10W 5 D.R/TP RF21 0RH1000D622...
  • Page 48 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R221 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R195 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% R222 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D...
  • Page 49 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R758 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% 6202VDT002B SX-1 SUNNY SC14.3MHZ +/- 30 R759 0RH0222D622 22 OHM 1 / 10 W 2012 5.00%...
  • Page 50 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1216 0RH0392D622 39 1/10W 5 D.R/TP R1288 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R1217 0RH2202D622 22K 1/10W 5 D.R/TP...
  • Page 51 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RH0682D622 68 1/10W 5 D.R/TP C330 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP 0RH4703D622 470K 1/10W 5 D.R/TP C331 0CH3104K566...
  • Page 52 0RH3300D622 330 1/10W 5 D.R/TP 140-058E SKHV10910B LGEC NON 12V 20A R136 0RH0332D622 33 1/10W 5 D.R/TP TU101 6700DP0001A TDFB-G235P LG INOTEK DVB/PA R137 0RH0332D622 33 1/10W 5 D.R/TP 6212AC2329A CH-206 SUNNY 32.768KHZ +/- R138 0RH0332D622 33 1/10W 5 D.R/TP 6204V00001H VCXO HALF SUNNY RADIAL 27.0...
  • Page 53 0.1UF 50V 10% X7R 2012 R/TP 0IMMRMR027A MX29LV320ATTC-70 MACRONIX 4 C112 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP 0IZZTSA127A ST 48P 42LP1D-EA ST FLASH M C113 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP 0IZZTSA099A STM 48P 42LP1D-EA DIGITAL F C114 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
  • Page 54 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RH1002D622 10K OHM 1 / 10 W 2012 5.00% R438 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D 0RH1002D622 10K OHM 1 / 10 W 2012 5.00% R439...
  • Page 55 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C276 0CH5471K416 470PF 50V 5% NP0 2012 R/TP C680 0CH3103K516 10000PF 50V 10% B(Y5P) 2012 C293 0CH6221K416 220PF 50V J NP0 2012 R/TP...
  • Page 56 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q300 0TR150400BA CHIP 2SA1504S(ASY) BK KEC - R264 0RH1000D622 100 1/10W 5 D.R/TP Q301 0TR150400BA CHIP 2SA1504S(ASY) BK KEC - R265...
  • Page 57 0RH1501D622 1.5K OHM 1 / 10 W 2012 5.00 6700MF0010D TAFM-W504P LG INOTEK MULTI R655 0RH2200D622 220 1/10W 5 D.R/TP 6634D00010C TASA-G201D LG INNOTEK 75 OH R656 0RH2200D622 220 1/10W 5 D.R/TP 6210TCE001G HH-1M3216-501 CERATEC 3216M R661 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D...
  • Page 58 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C257 0CH3474H946 "0.47UF 25V 80%,-20% F(Y5V)" C659 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) S C258 0CH3103K516 10000PF 50V 10% B(Y5P) 2012...
  • Page 59 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q405 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - R471 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D Q406 0TR387500AA CHIP 2SC3875S(ALY) BK KEC -...
  • Page 60 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION X-STUDIO BOARD C188 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R AR110 0RHZTCZ001D RCA SMART 22OHM 1/16 W 5% 3 C189 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R...
  • Page 61 10K OHM 1/10 W 5% 1608 R/TP IC101 0IPRPAL005A "AT76C120-UI-OJZ208,PB FREE" R273 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP IC102 0IZZTSA128A ATMEL 48P 42LP1D-EA X-STUD R274 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP IC102 0IZZTSA100A ATMEL 48P 42LP1D-EA X-STUDI R275 0RJ0000D677...
  • Page 62 DATE: 2005. 04. 25. DATE: 2005. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOGO BOARD L119 6200QJ3001A "FILTER,EMI REEL/TAPING BMS4" Q102 0TFON80009A "NTS2101PT1G,P-CHANNEL,PB FR" C3100 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD) R105 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP...
  • Page 67 Apr, 2005 P/NO : 38289S0004A Printed in Korea...

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