LG RZ-23LZ41 Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. LCD TV
  5. RZ-23LZ41
  6. Service manual
LG RZ-23LZ41 Service Manual

LG RZ-23LZ41 Service Manual

Chassis : ml-041a
Hide thumbs Also See for RZ-23LZ41:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Owner's Manual
LCD TV

SERVICE MANUAL

CHASSIS : ML-041A
MODEL : RZ-23LZ41
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
e-mail:http://www.LGEservice.com/techsup.html
R
website:http://biz.LGservice.com

Advertisement

Table of Contents
loading

Related Manuals for LG RZ-23LZ41

Summary of Contents for LG RZ-23LZ41

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : ML-041A MODEL : RZ-23LZ41 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 ..................10 ADJUSTMENT INSTRUCTION..............11 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 2. After removing an electrical assembly equipped with ES manual and its supplements and addenda, read and follow the devices, place the assembly on a conductive surface such as SAFETY PRECAUTIONS on page 3 of this publication. aluminum foil, to prevent electrostatic charge buildup or NOTE: If unforeseen circumstances create conflict between the exposure of the assembly.
  • 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-041A chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature: 25°C ±...
  • Page 7 4.General Specification(Monitor) Item Specification Unit Remark Panel 23” TFT WXGA LCD Frequency range DVI-I input H:31 ~ 61KHz, V: 56 ~ 75Hz 1) Contrast/ Brightness Control function 2) H- Position/ V-Position 3) Tracking : Clock/Phase 4) Auto Configure 5) Reset 1: Y Component Jack 3: Pb...
  • Page 8 5.Optical Feature(LCD Module) Item Specification Remark Viewing Angle R/L, U/D 176,176 <CR 10> Luminance Luminance(cd/ ) Typical Variation MAX/MIN Contrast Ratio ALL white/All back CIE Color Coordinates WHITE Typ. 0.282 Typ. 0.297 (Tolerance 0.03) Typ. 0.632 Typ. 0.342 Green Typ. 0.281 Typ.
  • Page 9 7.Component Video Input(Y, P Resoluton H-freq(kHz) V-freqHz) Pixel clock Proposed 640 x 480 15.73 60.00 SDTV. DVD 480i RZ, RT, RM 640 x 480 15.63 59.94 SDTV. DVD 480i RZ, RT, RM 704 x 480 31.47 59.94 EDTV 480p RT, RM 720 x 576 15.625 50.00...

  • Page 10: Timing Chart

    TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Back Porch Video Active Time Front Porch Sync Duration Sync Mode Resolution Frequency Clock Polarity Sort 31.469 25.175 640x480 –...

  • Page 11: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 2.2.1 EDID DATA [DDC DATA Analog] This instruction is for the application to the LCD TV. 01 02 03 07 08 09 0A 0B 0C 0D 0E 0F FF FF FF FF FF FF 00 1E 6D 05 56 01 01 2.
  • Page 12 3. Shipping Conditions ITEM CONDITION REMARK Power Volume Level Main Pcture Input Main Last Channel Pr 01 Mute 16:9 Station Auto Program Manual Program Program Edit Favorite Program None Picture Dynamic Dynamic Contrast Brightness Colour Sharpness NTSC OPTION Tint Sound Flat Balance Special...
  • Page 13 *Option(PAL) ITEM CONDITION REMARK ITEM CONDITION REMARK Option 1 Option 3 Side AV 0: Side AV Off Language Remark 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 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 15: Troubleshooting

    TROUBLESHOOTING No power :[A]Process (LED indicator off) Check short of main B/D Check 24V or 12V or Change Power B/D Fail of Power B/D Pass Check Output of Change L3, L1300 Fail L3, L1300 Pass Check Output of Change L808,L809 Change IC1300,IC4 or IC8 IC1300, IC4 or IC8 (F801,F802)
  • 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 Change Q310,Q315,Q316 Q310,Q315,Q316 Fail Pass Re-soldering or Check the input/ Change the defect part Fail output of IC1 Re-soldering or Check the input/output Change the defect part Fail of IC500, IC600 Pass...
  • Page 18 No Raster on AV Signa No Raster on TV(RF) signal (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 C316,C317, C316,C317,Q308,Q313 Q308,Q313 Fail Pass...
  • 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 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 LA7222C - 20 -...
  • Page 21 BLOCK DIAGRAM DESCRIPTION 1. Video controller unit and display data conversion unit The video controller unit receives the video signal inputted to the tuner, AV port (AV1, AV2, S-Video and component) and converts it to the analog RGB signal through the microcomputer (VCTI) combined with the video decoder that integrates various functions in one chip.

  • Page 22: Wiring Diagram

    - 22 -...

  • Page 23: Exploded View

    - 23 -...

  • Page 24: Exploded View Parts List

    SPEAKER ASSEMBLY, RT/RZ/RM/RJ-23LZ41 4PIN SPK ASSY FOR LEFT 4950TKS309A METAL, FRAME RT-23LZ41 4950TKS309B METAL, FRAME RZ-23LZ41 C/SKD 6871TPT287C PWB(PCB) ASSEMBLY,POWER, RZ-23LZ41 POWER TOTAL BRAND AC INLET MIKI 3313TP2023A MAIN TOTAL ASSEMBLY, RZ-23LZ50 LPL BRAND ML-041A 4951TKS191A METAL ASSEMBLY, REAR SHIELD, 23LZ41,4950VOO150 4951TKS191B...

  • 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: 2004. 11. 25. DATE: 2004. 11. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C523 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C526 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
  • Page 27 DATE: 2004. 11. 25. DATE: 2004. 11. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C935 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C750 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R C936 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
  • Page 28 DATE: 2004. 11. 25. DATE: 2004. 11. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C131 0CE477EJ618 470UF KMG 35V 20% FL TP 5 C863 0CH8476F691 47UF 16V 20% 105STD (CYL) R/T C132 0CE477EJ618 470UF KMG 35V 20% FL TP 5...
  • Page 29 DATE: 2004. 11. 25. DATE: 2004. 11. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC200 0ISA722200A LA7222 (1280 AUDIO) - - - - L903 6210TCE001G HH-1M3216-501 CERATEC 3216MM IC501 0IMMREB010A "M12L64322A-6T ESMT 86P,TSOP T"...
  • Page 30 DATE: 2004. 11. 25. DATE: 2004. 11. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q310 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - - R395 0RH6800D622 680 OHM 1 / 10 W 5% D R/TP Q313 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - -...
  • Page 31 DATE: 2004. 11. 25. DATE: 2004. 11. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R265 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% D R110 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R271 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D...
  • Page 32 DATE: 2004. 11. 25. DATE: 2004. 11. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R251 0RJ5102D677 51K OHM 1/10 W 5% 1608 R/TP 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R253 0RJ1501D677 1.5K OHM 1/10 W 5% 1608 R/TP...
  • Page 33 R1709 0RN1000F409 100OHM 1/6 W 1% TA52 R924 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP 140-313A TACT 2LEAD 100G(TA) LG C&D NO R925 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP 140-313A TACT 2LEAD 100G(TA) LG C&D NO R926...
  • Page 36 Nov., 2004 P/NO : 3828TSL108P Printed in Korea...

Table of Contents