LG 37LC2RR-ZL Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. LCD TV
  5. 37LC2RR-ZL
  6. Service manual

LG 37LC2RR-ZL Service Manual

Chassis : mf-056m
Hide thumbs Also See for 37LC2RR-ZL:
Table of Contents

Advertisement

Quick Links

Download this manual
LCD TV
SERVICE MANUAL
CHASSIS : MF-056M
FACTORY MODEL : 37LC2RR-ZL
MODEL : 37LC2RR
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 37LC2RR-ZL

Summary of Contents for LG 37LC2RR-ZL

  • Page 1 LCD TV SERVICE MANUAL CHASSIS : MF-056M FACTORY MODEL : 37LC2RR-ZL MODEL : 37LC2RR 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..............11 SERVICE REMOTE CONTROL...............17 TROUBLE SHOOTING GUIDE..............18 BLOCK DIAGRAM...................25 EXPLODED VIEW .................. 28 EXPLODED VIEW PARTS LIST ..............29 REPLACEMENT PARTS LIST ............... 30 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 Shock, Fire, or other Hazards.
  • Page 4 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 3. Test method 1) This spec sheet is applied all of the 42" LCD TV with 1) Performance : LGE TV test method followed MF056M chassis.
  • Page 7 5. General Specification Item Specification Remark Panel 37" TFT WXGA LCD Frequency range H : 31 ~ 61Khz PC Input V : 56 ~ 75Hz Control Function 1) Contrast/Brightness 2) H-Position / V-Position 3) Tracking : Clock / Phase 4) Auto Configure 5) Reset Component Jack 1 : Y...
  • Page 8 6.Optical Feature(LCD Module) Item Specification Min. Typ. Max. Remark Viewing Angle <CR≥10> R/L, U/D Luminance Luminance(cd/m Unit : cd/m Condition:Maximum Luminance of LCD Module Condition:RF/AV, PSM:Dynamic,Full White Condition:PC/HDMI, PSM:Dynamic,Full White Variation MAX/MIN Contrast Ratio (With AI) 1200 1600 CIE Color Coordinates White 0.285 LPL(37")
  • Page 9 8. RGB PC/DTV Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 720*400 31.468 70.8 28.321 640*480 31.469 59.94 25.17 VESA 37.684 75.00 31.5 VESA 800*600 37.879 60.31 40.00 VESA 46.875 49.5 VESA 832*624 49.725 74.55 57.283 1024*768 48.363 60.00 65.00 VESA(XGA) 56.47 70.00 75.00 VESA(XGA)
  • Page 10 10. Mechanical specification <Table 1> Scart Arrangement 1.(Full Scart) Signal Signal Level Impedance < 1K Ω Audio Output B (right) 0.5 Vrms > 10K Ω Audio Input B (right) 0.5 Vrms < 1K Ω Audio Output A (left) 0.5 Vrms Ground (audio) Ground (blue) >...

  • Page 11: Adjustment Instruction

    [Channel Download]$[Write Batch]. Next, select proper This spec sheet is applied all of the 37" LCD TV, MF-056M binary file(*.bin) including the CH information for each chassis by manufacturing LG TV Plant or sort plants. model at [Channel Download] $ [NVRAM File]. 2. Specification.
  • Page 12 3) Connect RS232 cable(Use Download Jig and general RS- 4.2. Sub Program Download for “DVR” 232C Twisted Serial Cable) 1) Download Setup - You must change the DVR Download mode by using the Turbo Sound Key on the remote controller. * Before upgrading "Hudson flash memory", push the switch on the download jig 'inside'.4) Operate LGIDS.
  • Page 13 5. EDID (The Extended Display Identification Data) / DDC (Display Data Channel) Download * Use the proper signal cable for EDID Download - Analog EDID : Pin3 exists Caution:Never connect HDMI & D-sub cable at the same time. For RGB EDID For HDMI EDID 5.1.
  • Page 14 - Detail EDID Options are below ((a), (b), (c), (d), (e)) 3) Press IN-START key on R/C for adjustment. Model Name Product ID Product ID EDID Table 30083(A) 30083(A) 7583 6175 37LC2RR-ZL 30084(D) 30084(D) 7584 6275 40035(A) 40035(A) 9C63 6175 42LC2RR-ZL...
  • Page 15 3) Press the IN-START key and then TURBO PICTURE 6.3. Adjustment of RGB Key on R/C for adjustment. (1) Required Equipment 1) Remote controller for adjustment 2) MSPG-925F Pattern Generator (Which has XGA [1024*768] 60Hz 100% Color Bar pattern shown in [Fig. 3]) (2) 6.3.1 Method of Auto RGB Color Balance 1) Input the PC 1024x768 @ 60Hz 100% Color Bar pattern (MSPG-925F model:37, pattern:33) into RGB.
  • Page 16 7.3. Manual White Balance 9. Language Group (AV4(ZL)/ AV2(CL)) <Caution> EU-All 0-EU5 1-EU-8 2-EU-North 3-EU-East 4-N-EU 8 5-Non-EU etc. - It is very important to use the correct adjustment of the White Balance. English English English English English English English Just adjust White Balance with R and B gain.

  • Page 17: Service Remote Control

    SERVICE REMOTE CONTROL FUNCTION REMARK 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 18: Troubleshooting Guide

    TROUBLESHOOTING GUIDE <VSC Board> 1. No Power (1) Symptom Does’t minute discharge at module. Ø Non does not come in into the front LED. Ø (2) Check following Is plug in power cord? Plug in power cord. Is the Line Filter and Power Connect the Cable.
  • Page 19 2. Protect Mode (1) Symptom After once shining, it does not discharge minutely Ø from module The Rely falls(The sound is audible “click”) Ø It is converted with the color where the front LED Ø is pink from white. (2) Check following Is the Power Board Is output the normality Low/High Replace Power...
  • Page 20 4. In case of occurring strange screen into specific mode 4-1. In case the OSD does not displayed (1) Symptom LED is white. Ø The minute discharged continuously becomes Ø accomplished from module. (2) Check following Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 21 4-2. In case of does’t display the screen into specific mode (1) Symptom The screen does not become the display from specific input mode Ø (RF, AV, Component, RGB, DVI). (2) Check following Check the all input mode should become normality display. Ø...
  • Page 22 5. In case of no sound (1) Symptom LED is white Ø Screen display but sound is not output. Ø (2) Check following Is the SPK cable Is the SPK cable Replace SPK cable normal? connected well? Cable inserts well. Does IC400 Does IC404 Replace...
  • Page 23 <DVR Board> 1. Time shift Mode (1) Symptom Doesn’t work time shift mode. Ø Can’t enter to recorded list. Ø Can’t record AV/RF. Ø (2) Check following Are the cables connected well? Is time shift mode on? Power B/D works well? Change power B/D (12pin, 4pin, 400pin) HDD jumper is located...
  • Page 24 2. Time shift sound and Recorded video sound (1) Symptom SOUND doesn’t come out. Ø (2) Check following MUTE key on Turn off the mute Key Are power cables Is 31pin cable right? Connect 31p cable. Is sound cable right? connected well.

  • Page 25: Block Diagram

    - 25 -...
  • Page 26 - 26 -...
  • Page 27 MEMO - 27 -...

  • Page 28: Exploded View

    - 28 -...

  • Page 29: Exploded View Parts List

    Cover Assembly 37LC2RR-ZL LP61A 37” 37LC2RR-ZL 6304FLP360A LCD,Panel-TFT LC370WX1-SL11 37INCH 1365X768 500CD COLOR 72% 3809900164M Cover Assembly 37LC2RR-ZL LP62A 37” LGEMA PHANTOM BACK COVER ASSY 3809900164R Cover Assembly 37LC2RR MF056M 37” 37LC2RR (SET) 3809900164V Cover Assembly 37LC2RR-ZL MF056M 37” 37LC2RR-ZL( C/SKD from gumi)

  • Page 30: 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 31 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1130 0CK104CK56A 0603B104K500CT 100nF 10% 50V C1201 0CE106SH6DC VMV106M025S0ANB010 10uF 20% C1131 0CK103CK51A 0603B103K500CT 10nF 10% 50V C1202 0CK104CK56A 0603B104K500CT 100nF 10% 50V...
  • Page 32 C1800 0CK104CK56A 0603B104K500CT 100nF 10% 50V C1801 0CK104CK56A 0603B104K500CT 100nF 10% 50V C1802 0CK104CK56A 0603B104K500CT 100nF 10% 50V C1803 0CK104CK56A 0603B104K500CT 100nF 10% 50V DATE: 2006. 09. 13. C1804 0CK104CK56A 0603B104K500CT 100nF 10% 50V *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1805 0CK104CK56A...
  • Page 33 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C232 0CK272CK46A 0603B272J500CT 2.7nF 10% 50V C411 0CE476SF6DC VMV476M016S0ANC010 47uF 20% C233 0CK103CK56A 0603B103K500CT 10nF 10% 50V C412 0CE226SF6DC VMV226M016S0ANB010 22uF 20%...
  • Page 34 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C701 0CC300CK41A C1608C0G1H300JT 30pF 5% 50V C811 0CC300CK41A C1608C0G1H300JT 30pF 5% 50V C703 0CK104CK56A 0603B104K500CT 100nF 10% 50V C812 0CK104CK56A...
  • Page 35 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C887 0CK104CK56A 0603B104K500CT 100nF 10% 50V D1009 0DD226239AA KDS226 1.2V 85V 300MA 2A 4NS C888 0CK104CK56A 0603B104K500CT 100nF 10% 50V...
  • Page 36 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COIL & FILTER & INDUCTOR L118 0LCML00020G MLI-201209-3R3K 3.3UH 10% 0V L119 6200JB8010L MLB-201209-1000L-N2 1000OHM AL1201 6210TCE002B HB-4M3216-121JT 120OHM 3.2X1 L1204...
  • Page 37 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TRANSISTOR AR806 0RRZVTA001B MNR14E0ABJ510 51OHM 5% 1/16W AR807 0RRZVTA001B MNR14E0ABJ510 51OHM 5% 1/16W IC1202 0TR830009BA BSS83 N-CHANNEL MOSFET 10V - AR808...
  • Page 38 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1205 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W R1450 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1206 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W R1451 0RJ0102D677...
  • Page 39 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1817 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1 R1964 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1818 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1 R1965...
  • Page 40 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R321 0RJ2200D677 MCR03EZPJ221 220OHM 5% 1/10W R412 0RJ0432D677 MCR03EZPJ430 43OHM 5% 1/10W R322 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W R413 0RJ0432D677...
  • Page 41 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R529 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W R734 0RJ0562D677 MCR03EZPJ560 56OHM 5% 1/10W R556 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1 R735 0RH0202D622...
  • Page 42 CE35 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 1 CE36 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 1 CE37 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16V CE38 0CE227WF6DC MVK8.0TP16VC220M 220uF 20% 1 DATE: 2006. 09. 13. CE39 0CE227WF6DC MVK8.0TP16VC220M 220uF 20% 1 *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16V CE40...
  • Page 43 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION BC29 0CK104CK56A 0603B104K500CT 100nF 10% 50V BC96 0CK104CK56A 0603B104K500CT 100nF 10% 50V 0CK104CK56A 0603B104K500CT 100nF 10% 50V BC97 0CK104CK56A 0603B104K500CT 100nF 10% 50V...
  • Page 44 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION PFB7 0LCML00003B MLB-201209-0120P-N2 120OHM 2 R116 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1 PFB8 0LCML00003B MLB-201209-0120P-N2 120OHM 2 R117 0RJ1002D677...
  • Page 45 DATE: 2006. 09. 13. DATE: 2006. 09. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CONTROL BOARD 0RJ2000D677 MCR03EZPJ201 200OHM 5% 1/10W 0RJ2000D677 MCR03EZPJ201 200OHM 5% 1/10W 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1 SW101 140-313A THVV501BBC 1C1P 12VDC 0.05A...
  • Page 49 Sep., 2006 P/NO : MFL36002101 Printed in Korea...

This manual is also suitable for:

37lc2rr

Table of Contents