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LG RZ-37LZ30 Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : ML-038C
MODEL : RZ-37LZ30
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 RZ-37LZ30

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : ML-038C MODEL : RZ-37LZ30 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS .................3 SVC PRECAUTIONS ................4 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 SVC REMOCON..................11 TROUBLE SHOOTING ................12 BLOCK DIAGRAM...................16 WRING .....................18 EXPLODED VIEW .................. 19 EXPLODED VIEW PARTS LIST ..............20 REPLACEMENT PARTS LIST ..............21 SVC. SHEET ....................- 2 -...
  • Page 3: Safety Precautions

    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: Svc 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

    This specification is applied to ML-038C chassis. 2. Requirement for Test 3. Test and Inspection method Testing for standard of each part must be followed in below (1) Capacity: Follow LG electronics TV Testing Standard. condition. (2) Another Required Standard EMI: Following CE Standard(EN55020) (1) Ambient Temperature: 25°C ±...
  • Page 7 5.Feature and Function Item Specification Remark Remocon Code LG Code Only MENU,▲,PR ▼,◀VOL▶,TV · AV, OK, 0/I Local Key 8 Key Picture User Control Colour Temperature Tint (NTSC Signal Only) Contrast Brightness Colour Tint Sharpness Dynamic / Standard / Mild /User...
  • Page 8 6. RGB 1 and RGB 2 Input Mode Vertical Frequency: Standard ±0.5Hz Vertical Lines: Standard ± 7Lines Resolution H-freq(KHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark 640*350 31.468 70.09 25.17 640*350 37.861 85.08 31.50 720*400 31.469 70.08 28.32 720*400 37.927 85.03 35.50 640*480 31.469 59.94...
  • Page 9: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object ML-038C RZ-37LZ30 Model Name Type RS-232C These instructions are applied to all of the MODELS of LCD TV, ML- Communication 038C. Baud rate Data bit Stop bit Parity bit 115200 NONE 2. Instruction Max.Value Cmd1...
  • Page 10 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 11: 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 12: Troubleshooting

    TROUBLESHOOTING No Power (LED Indicator off) Check SMPS Fail Output Change SMPS Board Stby 5V, Stby 3.3V, 18V, 3.3V Pass Check in Fail Fail Input B+ Change IC901, IC905 Check IC1305 IC901 & IC905 Pass Pass Change IC1305 Check index Fail STBY 5V Change LED Ass'y...
  • Page 13 A:process No Raster Check inverter Check invert Check LED Status connector connector Fail Fail Pass Pass Check invert Check invert Pass Check panel Change panel Link cabel Link cabel Pass Pass Check module Change module Pass Check Output of IC905 Pass Check the Check IIC ERROR of...
  • Page 14 No Raster on AV signal No Raster on TV(RF) signal (Video, S-Video) Check 5V, 33V of TU801 Repeat Check the out of A:Process Re-soldering or TU801 Fail Fail Change the defect part Pass Check the C1238, C1240, C1243, C1236 Check the input of IC1201 Change the defect part Fail...
  • Page 15 No sound Check the input source Change source input Fail Pass Check the input Check the pin 56, 57 Change the Defet part of IC1102 of IC1102 Fail Fail Pass Check the output Check the input Change IC601 of IC1001, IC1002 of IC1102 Pass Fail...
  • Page 16: Block Diagram

    BLOCK DIAGRAM - 16 -...
  • Page 17 BLOCK DIAGRAM DESCRIPTION 1. Input block - It is consist of CVBS, S-Video, RF, Analog RGB, DVI-D signals. - The RS-232C jack is used for software-upgrade and white balance adjustment. - It is connected with PC for software-upgrade usage or white balance adjustment equipment in manufacturing process.
  • Page 18: Wring

    WIRING - 18 -...
  • Page 19: Exploded View

    - 19 -...
  • Page 20: Exploded View Parts List

    CABINET ASSEMBLY, 37LZ30 BRAND 3090TKE008A . 3091TKE007B CABINET ASSEMBLY, RZ-37LZ30 BRAND . RZ-37LZ30(SKD) 6304FLP150A LCD(LIQUID CRYSTAL DISPLAY),LC370W01-C5K1 LG PHILPS TFT COLOR WXGA, WITH AI 3809TKE005F BACK COVER ASSEMBLY, RZ-37LZ30 3808TKE007 LABEL : 3850VC0002F 3809TKE005A BACK COVER ASSEMBLY, 37LZ30 3808TKE007A .
  • Page 21: 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 22 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1140 0CH3472K516 4700PF 50V K B 2012 R/TP C1141 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1145 0CH3472K516 4700PF 50V K B 2012 R/TP C1144...
  • Page 23 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C169 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C416 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C171 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C418...
  • Page 24 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C567 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C730 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C568 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C731...
  • Page 25 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1340 0CE227DK618 220UF STD 50V M FL TP5 IC701 0IMMREB010A "M12L64322A-6T ESMT 86P,TSOP T" C1341 0CE477DF618 470UF STD 16V 20% FL TP 5 IC702...
  • Page 26 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q203 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - - R1114 0RH1000D622 100 1/10W 5 D.R/TP Q406 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - - R1116...
  • Page 27 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1254 0RH1000D622 100 1/10W 5 D.R/TP R239 0RH8201D622 8.2K 1/10W 5 D.R/TP R1255 0RH1000D622 100 1/10W 5 D.R/TP R240 0RH1000D622 100 1/10W 5 D.R/TP R1256...
  • Page 28 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R802 0RH1000D622 100 1/10W 5 D.R/TP R978 0RH1000D622 100 1/10W 5 D.R/TP R803 0RH1000D622 100 1/10W 5 D.R/TP R981 0RH1000D622 100 1/10W 5 D.R/TP R810...
  • Page 29 DATE: 2004. 09. 21. DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R002 0RH2201D622 2.2K OHM 1 / 10 W 2012 5.00% R242 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R013 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% D R303...
  • Page 30 DATE: 2004. 09. 21. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 140-313B TACT 2LEAD 160G(TA) LG C&D NO 140-313B TACT 2LEAD 160G(TA) LG C&D NO 140-313B TACT 2LEAD 160G(TA) LG C&D NO 140-313B TACT 2LEAD 160G(TA) LG C&D NO 140-313B TACT 2LEAD 160G(TA) LG C&D NO...
  • Page 31 SCHEMATIC DIAGRAM - 31 -...
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  • Page 49 Sep., 2004 P/NO : 3828TSL104V Printed in Korea...