Related Manuals for LG RT-23LZ50
Summary of Contents for LG RT-23LZ50
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Page 1: Service Manual
LCD TV SERVICE MANUAL CHASSIS : ML-041A MODEL : RT-23LZ50 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 ................16 BLOCK DIAGRAM...................21 WIRING DIAGRAM ..................23 EXPLODED VIEW .................. 24 EXPLODED VIEW PARTS LIST ..............25 REPLACEMENT PARTS LIST ............... 26 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.
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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 5.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 6.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. 0.284 0.285 0.289 Typ. 0.295 0.293 0.303 Typ. Typ. Green Typ. Typ. Blue Typ.
- Page 9 8.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...
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Page 10: Timing Chart
TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Back Porch Total Period 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. 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 2. Adjustment 00 FF FF FF FF FF FF 00 1E 6D 07 56 01 01 01 01 00 0E 01 03 01 40 26 78 08 B1 DA A1 56 48 98 24 13 48 4B 2F CE 00 31 40 01 01 01 01 45 40 45 4F 2.1 Auto Gain/Offset adjustment... - 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 Dynamic Picture 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 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 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.
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Page 15: 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 16: 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 L3, L1300 Fail Pass Check Output of Change L808,L809 Change IC1300,IC4 or IC8 IC1300, IC4 or IC8 (F801,F802) - Page 17 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 18 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 19 No Raster on AV Signa No Raster on TV(RF) signal (Video1,Video2, 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...
- Page 20 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...
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Page 21: Block Diagram
BLOCK DIAGRAM LA7222C - 21 -... - Page 22 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.
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Page 23: Wiring Diagram
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Page 24: Exploded View
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Page 25: Exploded View Parts List
3091TKE017A CABINET ASSEMBLY, RZ-23LZ50 BRAND 3090TKE010 LCD TV 3091TKE017E CABINET ASSEMBLY, RT/RZ-23LZ50 BRAND..(C/SKD) 6304FLP131A LCD(LIQUID CRYSTAL DISPLAY), LC230W01-B2 LG PHILPS TFT COLOR WXGA,500NITS,EGI, LVDS 3809TKE017B BACK COVER ASSEMBLY, RT-23LZ50 ML-041A NON 3809TKE017L BACK COVER ASSEMBLY, RT-23LZ50 ML-041A A/V ASSY 3043TKK180A... -
Page 26: 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 27 DATE: 2004. 09. 02. DATE: 2004. 09. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C529 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C700 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C530 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
- Page 28 DATE: 2004. 09. 02. DATE: 2004. 09. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C942 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C801 0CK105CF94A "1UF 1608 16V 80%,-20% R/TP F" C943 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
- Page 29 DATE: 2004. 09. 02. DATE: 2004. 09. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C307 0CH8106F691 10UF 16V 20% 105STD (CYL) R/ D703 0DZ510009EE UDZ S 5.1B TP ROHM-K SOD323 C308 0CH8476H691 47UF 25V 20% 105STD (CYL) R/...
- Page 30 DATE: 2004. 09. 02. DATE: 2004. 09. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0IMCRFA015A KA7805R FAIRCHILD 2P D-PAK R L309 0LC1532101A 15UH 10% 3216 R/TC FI-C3216- IC905 0IPMGFA061A "FAN1587AD33X FAIRCHILD 3P,DP"...
- Page 31 DATE: 2004. 09. 02. DATE: 2004. 09. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R132 0RH1003D622 100K 1/10W 5 D.R/TP R851 0RH4701D622 4.7K 1/10W 5 D.R/TP R133 0RH1003D622 100K 1/10W 5 D.R/TP 0RH1000D622 100 1/10W 5 D.R/TP...
- Page 32 DATE: 2004. 09. 02. DATE: 2004. 09. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R379 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% D 0RJ4700D677 470 OHM 1/10 W 5% 1608 R/TP R381 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% D...
- Page 33 DATE: 2004. 09. 02. DATE: 2004. 09. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R728 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP 0RJ1000D677...
- Page 34 0RH1500D622 150 1/10W 5 D.R/TP R952 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP SW1600 140-313A TACT 2LEAD 100G(TA) LG C&D N R953 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP VIDEO BOARD...
- Page 35 Date: 2004. 05. 07 P/No.:3854TP3001A...
- Page 36 Date: 2004. 05. 07 P/No.:3854TP3001A...
- Page 37 Jun., 2004 P/NO : 3828TSL103T Printed in Korea...