LG RM-15LA66K Service Manual
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LG RM-15LA66K Service Manual

LG RM-15LA66K Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : ML-041B
MODEL: RM-15LA66K
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 RM-15LA66K

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : ML-041B MODEL: RM-15LA66K CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................4 TIMING CHART..................11 ADJUSTMENT INSTRUCTION ...............12 TROUBLE SHOOTING ................15 BLOCK DIAGRAM...................20 WIRING DIAGRAM ..................22 EXPLODED VIEW .................. 23 EXPLODED VIEW PARTS LIST ..............24 REPLACEMENT PARTS LIST ............... 25 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 X-RADIATION, 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

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This specification is applied to ML-041B chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature: 25°C ±...
  • Page 7 4. Feature and Function Item Specification Remark Teletext Top(option) TOP, FLOF,LIST 10 page REMOCON NEC Code PAL/ NTSC AV Input Rear(option, NT), S-Vedio Input Rear Component input Rear (option, NT) PERI TV Connector Full SCART : 1 Rear (option,EU) RGB(VGA)Input D-sub 15 pin H/p input PC Sound input...
  • Page 8 6.Engineering Specification 6-1.General Specification(TV) Item Specification Remark Video input applicable system 1)PAL-D/K,B/G,I 2)NTSC-M 3)SECAM NTSC 4.43’ Receivable broadcasting system EU/Non-EU(RZ/RT) 1)PAL/SECAM BG (PAL Market) 2)PAL/SECAM DK 3)PAL I/I 4)SECAM L/L’ 5)NTSC M 6)PAL-N/M 7)NTSC M 7)NTSC Area(RM) RF input channel VHF : E2 ~ E12 UHF : E21 ~ E69 CATV : S1 ~ S20...
  • Page 9 Item Specification Remark Power Supply H/V Sync Video Power Consumption LED Color Normal On/On Active GREEN Stand By Off/On Suspend Mode On/Off DPM Off Mode Off/Off Cut-off Switch off PBP SWAP ON/OFF ITEM Spectification Remark D-SUB Pin Configuraion 1: RED 2: Green 3: Blue: 4: ID2(GND)
  • Page 10 6-3. Power Item Unit Remark Video Input Level 0.85 1.15 EN-50049 Audio Input Level NTSC:0.4Vrms(Typ) Audio Input Frequency Response Audio Input S/N Audio Input Distortion Audio Input Dynamic Range Video Output Level 0.85 1.15 Video Output Frequency Response Video Output S/N Audio Output Level Audio Output Frequency Response Audio Output S/N...

  • Page 11: Timing Chart

    TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Video Active Time Front Porch Sync Duration Back Porch Sync Mode Resolution Frequency Clock Sort Polarity 31.468 25.175 640x350 –...

  • Page 12: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 2.2.3 PC Mode adjustment 2.2.3.1 Adjustment preparation This instruction is for the application to the LCD TV. Conduct Heat Run at the RF fog signals for more than 2. Adjustment 30 minutes. 2.1 Adjustment overview Connect the Pattern Generator to 15 Pin D-Sub Jack of LCD TV.
  • Page 13 *Option(PAL) ITEM CONDITION REMARK ITEM CONDITION REMARK Option 1 Option 3 Side AV 0: Side AV Off Language 0: Eng Only 1: Side AV On 1: EU5 SCART 0: SCART Off 2: 12 nations(Europe) 1: SCART On 3: Eng + Chines 0: PC Off 4: Eng + Arab + Urdu 1: PC On...

  • Page 14: 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 15: Troubleshooting

    TROUBLESHOOTING No power :[A]Process (LED indicator off) Check short of main B/D Check 15V or 5V or Change Lips Fail of Lips Pass Check Output of Change Q1100 Fail Q1100 Pass Check Output of Change IC1107, IC1104 IC1107, IC104 Fail Pass Change LED Assy Check LED Assy...
  • Page 16 No Raster :[B]Process Check LED Status Repeat A PROCESS on display unit Fail Check L900,L901 Change L900,L901, L902,L903 L902,L903 Fail Pass Check the input/ Change IC901 Output of IC901 Fail Pass Change inverter Check inverter connector or inverter Connector or inverter Fail Pass Change panel link...
  • Page 17 No Raster on Component signal Repeat [A] Process Pass Check the signal of Check JA1200 or L1200, L1202, L1203 RCA CABLE Fail Pass Re-soldering or Check the input/ Change the defect part, Fail output of IC1 Check X11 Re-soldering or Check the input/output Change the defect part Fail...
  • Page 18 No Raster on AV Signal No Raster on TV(RF) signal (Video, S-Video) Check 5V, 33V of TU1000 Repeat Check the output of Re-soldering or [A] Process TU1000 Fail Fail Change the defect part Pass Check the signal of Change L1209, L1210, L1209, L1210, L1212 L1212 Fail...
  • Page 19 No Sound Check the Change source input input source Fail Pass Re-soldering or Check the input/output Change the defect part of IC1 Fail Check X11 Pass Re-soldering or Check the input/output Change the defect part of IC100,IC101 Fail Pass Check the speaker Change speaker Fail Pass...

  • Page 20: Block Diagram

    BLOCK DIAGRAM SIDE_AV POWER - 20 -...
  • Page 21 BLOCK DIAGRAM DESCRIPTION 1. Video Controller Unit & Display Data Conversion Unit The video controller unit receives the video signals inputted through the tuner, AV port (AV1, AV2, S-Video, component), and converts them into an analog RGB signal through the microcomputer (VCTI) combined with the video decoder that integrates various functions in one chip.

  • Page 22: Wiring Diagram

    LOCAL KEY IR_LED - 22 -...

  • Page 23: Exploded View

    - 23 -...

  • Page 24: Exploded View Parts List

    CABINET ASSEMBLY, RM-15LA67 BRAND 3090V00444 CANADA 3091TKB050E CABINET ASSEMBLY, RM-15LA67 BRAND 3090V00444 CANADA SKD 6304FLP212A LCD(LIQUID CRYSTAL DISPLAY), LC150X02-A4K2 LG PHILPS TFT COLOR LEAD FREE 6304FLP133B LCD(LIQUID CRYSTAL DISPLAY), LC150X02-A4 LG PHILPS TFT COLOR COST COMPENSATION 3809TKB029K BACK COVER ASSEMBLY, RM-15LA67 3808V00368 CANADA...

  • Page 25: 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 26 DATE: 2005. 01. 28. DATE: 2005. 01. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1001 0CK103CK51A 0.01UF 1608 50V 10% R/TP B(Y C122 0CC100CK41A 10PF 1608 50V 5% R/TP NP0 C1002 0CK103CK51A 0.01UF 1608 50V 10% R/TP B(Y...
  • Page 27 DATE: 2005. 01. 28. DATE: 2005. 01. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION ZD200 0DZ620009HB UDZ S 6.2B TP ROHM SOD323 20 L1102 6210TCE001G HH-1M3216-501 CERATEC 3216MM ZD209 0DZ620009HB UDZ S 6.2B TP ROHM SOD323 20...
  • Page 28 DATE: 2005. 01. 28. DATE: 2005. 01. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R216 0RH3901D622 3.9K 1/10W 5 D.R/TP 0RJ0822D677 82 OHM 1/10 W 5% 1608 R/TP R217 0RH4703D622 470K 1/10W 5 D.R/TP...
  • Page 29 PART NO. DESCRIPTION / SPECIFICATION R914 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP SW2204 140-313B TACT 2LEAD 160G(TA) LG C&D N R917 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP SW2205 140-313A TACT 2LEAD 100G(TA) LG C&D N R928...
  • Page 30 DATE: 2005. 01. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IR BOARD C2101 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP L2101 6210TCE001A HB-1S2012-080JT CERATEC 2012 Q2101 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - Q2102 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - Q2103 0TR387500AA CHIP 2SC3875S(ALY) BK KEC -...
  • Page 31 Date: 2004. 05. 07 P/No.:3854TN1001A...
  • Page 32 Date: 2004. 05. 07 P/No.:3854TN1001A...
  • Page 33 Jan., 2005 P/NO : 3828TSL108Y Printed in Korea...

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