LG RZ-42LZ30 Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. LCD TV
  5. RZ-42LZ30
  6. Service manual

LG RZ-42LZ30 Service Manual

Chassis : ml-038c
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
LCD TV
SERVICE MANUAL
CHASSIS : ML-038C
MODEL : RZ-42LZ30
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

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RZ-42LZ30 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for LG RZ-42LZ30

Summary of Contents for LG RZ-42LZ30

  • Page 1 LCD TV SERVICE MANUAL CHASSIS : ML-038C MODEL : RZ-42LZ30 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 ADJUSTMENT INSTRUCTION ..............9 SVC REMOCON..................11 TROUBLE SHOOTING ................12 BLOCK DIAGRAM...................16 EXPLODED VIEW .................. 18 EXPLODED VIEW PARTS LIST ..............19 REPLACEMENT PARTS LIST ..............20 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 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

    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-038C chassis. (1) Capacity: Follow LG electronics TV Testing Standard. (2) Another Required Standard 2. Requirement for Test EMI: Following CE Standard(EN55020)
  • Page 7 5.Feature and Function Item Specification Remark Remocon Code LG Code Only Local Key MENU, ,PR , VOL ,TV · AV, OK, 0/I 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 Resoluton H-freq(kHz) V-freq(kHz) Pixel clock 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...

  • Page 9: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object ML-038C RZ-42LZ30 Model Name These instructions are applied to all of the MODELS of LCD MONITOR, ML- Title RS-232C Communication 038C. Baud rate Data bit Stop bit Parity bit 2. Instruction 115200 NONE 2-1. Because this is not a hot chassis, it is not necessary to use an isolation Max.Value...
  • 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 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 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 Change IC901, IC905 Input B+ Check IC1305 IC901 & IC905 Pass Pass Change IC1305 Fail Check index Change LED Ass'y STBY 5V (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 Change panel Check 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 pin 56, 57 Check the input 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. 2.

  • Page 18: Exploded View

    - 18 -...

  • Page 19: Exploded View Parts List

    CABINET ASSEMBLY, RZ-42LZ30.APLLKX BRAND 3090V00554 SET 3091TKE015B CABINET ASSEMBLY, RZ-42LZ30.BRAND 3090V00554 SKD 6304FLP125A LCD(LIQUID CRYSTAL DISPLAY), LC420W02-A4K1 LG PHILPS TFT COLOR NORMAL POL,WXGA,20LAMP,500NITS, H-L, W/O AI 3809TKE011B BACK COVER ASSEMBLY, RZ-42LZ30 3808V00453 (3850VC0002F) 3809TKE011A BACK COVER ASSEMBLY, RZ-42LZ30 3808V00453 SKD...

  • Page 20: 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 21 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1134 0CH3472K516 4700PF 50V K B 2012 R/TP C114 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1140 0CH3472K516 4700PF 50V K B 2012 R/TP C1141...
  • Page 22 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C168 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C412 0CH3103K516 10000PF 50V 10% B(Y5P) 2012 C169 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C416...
  • Page 23 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C564 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C729 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C567 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C730...
  • Page 24 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1329 0CE475DK618 4.7UF STD 50V 20% FL TP 5 IC502 0IMMRHY033A HY57V643220C(L)T-6 HYNIX 86P C1340 0CE227DK618 220UF STD 50V M FL TP5 IC701...
  • Page 25 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *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 0RH1000D622 100 1/10W 5 D.R/TP...
  • Page 26 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *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 27 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *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 28 DATE: 2004. 06. 10. DATE: 2004. 06. 10. *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 29 0RD1002F609 10K 1/6W 5 TA52 R107 0RD1002F609 10K 1/6W 5 TA52 R108 0RD1002F609 10K 1/6W 5 TA52 140-313B TACT 2LEAD 160G(TA) LG C&D N 140-313B TACT 2LEAD 160G(TA) LG C&D N 140-313B TACT 2LEAD 160G(TA) LG C&D N 140-313B TACT 2LEAD 160G(TA) LG C&D N 140-313B TACT 2LEAD 160G(TA) LG C&D N...
  • Page 30 SCHEMATIC DIAGRAM - 30 -...
  • Page 31 - 31 -...
  • Page 32 - 32 -...
  • Page 33 - 33 -...
  • Page 34 - 34 -...
  • Page 35 - 35 -...
  • Page 36 - 36 -...
  • Page 37 - 37 -...
  • Page 38 - 38 -...
  • Page 39 - 39 -...
  • Page 40 - 40 -...
  • Page 41 - 41 -...
  • Page 42 - 42 -...
  • Page 43 - 43 -...
  • Page 44 - 44 -...
  • Page 45 - 45 -...
  • Page 46 - 46 -...
  • Page 47 - 47 -...
  • Page 48 Jun., 2004 P/NO : 3828TSL103J Printed in Korea...

Table of Contents