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LG FLATRON L3000A Service Manual

Color monitor
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CL-36
FACTORY MODEL: L3000AL
MODEL:
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
L3000A
L3000A
(L3000AL-AL), (L3000AL-SL)

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Summary of Contents for LG FLATRON L3000A

  • Page 1: Color Monitor

    COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-36 FACTORY MODEL: L3000AL MODEL: L3000A (L3000AL-AL), (L3000AL-SL) CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. L3000A...

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............13 PRECAUTIONS ............4 TROUBLESHOOTING GUIDE ......14 TIMING CHART ............5 PRINTED CIRCUIT BOARD........19 OPERATING INSTRUCTIONS ........ 6 EXPLODED VIEW...........22 WIRING DIAGRAM ..........9 REPLACEMENT PARTS LIST .......24 BLOCK DIAGRAM ..........10 PIN CONFIGURATION..........31 DESCRIPTION OF BLOCK DIAGRAM....11 SCHEMATIC DIAGRAM .........

  • Page 3: Signal Connector Pin Assignment

    Signal Connector Pin Assignment • DVI-D Connector (Digital) Signal (DVI-D) Signal (DVI-D) T. M. D. S. Data2- Hot Plug Detect T. M. D. S. Data2+ T. M. D. S. Data0- T. M. D. S. Data2/4 Shield T. M. D. S. Data0+ T.

  • Page 4: Precautions

    PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or marked on the schematic diagram and the inverter circuit, must disconnect the AC adapter...

  • Page 5: Timing Chart

    TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Video Active Time Front Porch Sync Duration Back Porch Sync Mode Resolution Frequency Clock Sort Polarity 31.469 640x350 25.175 70Hz...

  • Page 6: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW L3000A Rear View Pannel Front Control Panel REAR VIEW CONNECTOR PANEL Factory adjustment AUDIO or AS Port Input DVI-D D-Sub D-Sub RCA Cable S-Video AUDIO Connector Connector Connector Connector Connector Output...

  • Page 7: Front Control Panel

    OPERATING INSTRUCTIONS Front Control Panel Use this button to turn the display on or off. Power Button • Power (DPMS) This Indicator lights up green when the display operates normally. If the display is in • Indicator DPM (Energy Saving) mode, this indicator color changes to amber. MENU Button Use this button to enter or exit the On Screen Display.
  • Page 8 Attaching temporary stand Follow below procedures to temporarily use the display on the floor. First, check if the following parts are all present. Parts Temporary Stand Screws Bottom Rubbers Take out 2 screws from the rear of the display. As shown in the diagram, place the bottom rubbers where you took out the 2 screws and then secure them with those 2 screws.

  • Page 9: Wiring Diagram

    Connector Ass’y P/N: 6631T11016A Connector Ass’y P/N: 6631T20020P J703 Connector Ass’y P/N: 6631T12002P J710 J704 J705 Connector Ass’y P/N: 6631T12002N J706...

  • Page 10: Block Diagram

    Ready Video Signal 3.3V TMDSRX_PDNN Flash ROMOE 3.3V Format Converter Circuit TMDS ROMWE Digital Memory 3.3V 2.5V Data Rece iver Signal DVI-D (PWD 0 ..7) (M29W800DT) (SIL1 61A ) (PWA 0 ..19) H V Sync ROMOE TMDSTX_PDNN Sync_ Sel ROMWE GREF EEPROM Multi-...

  • Page 11: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Input Selection Circuit This block is composed of 74LVC257(U5) and peripheral devices. There are two inputs, Analog and Digital H/V Sync. LVC257 IC chooses one input and outputs selected input through sync selection pin (Pin 1). 2.
  • Page 12 10. DC/DC Converter block DC/DC Converters convert the input 12V, 24V to proper 2.5V, 3.3V, 5V, 8V for main control system. For shooting heat trouble, we use the DC/DC converting IC. 11. Power Supply Block This Block generates DC Voltages(5V, 12V, 18V and 24V) to Main Control system from AC Power(100-240 V, 50/60 Hz, 1.0 A).

  • Page 13: Adjustment

    ADJUSTMENT All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes 6) No attempt to manually adjust, BIAS and Drive data several minor adjustment may be required. is automatically adjustde and saved to the EEPROM. Adjustment should be following procedure and after 7) After “OK”...

  • Page 14: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. OUT OF ORDER ON POWER POWER LAMP OFF STATE POWER BOARD OUTPUT CHECK (5V, 12V, 24V) KEY CHECK 74LVC541(U25), CONN(J19)CHECK PW166(U8) MODULE INPUT POWER M29W800DT(U19) INVERTER INPUT POWER CHECK INPUT POWER INPUT POWER CHECK PIN 1=> CHECK CHECK 12VS BA033T(U37)
  • Page 15 2.NO RASTER STATE ON ANALOG SIGNAL NO RASTER ON ANALOG SIGNAL POWER CHECK OF 74LVC257(U5) : U37(3.3V) POWER CHECK OF AD9883 : U2(DVDD,AVD), L11(V33-ADC) POWER CHECK OF PW166(U8) :BA033T(U37) =>3.3V, LM317(U10) =>2.5STB POWER CHECK OF LVDS(U401) : L401(3.3V-LVDS) CONN(J17) CHECK CHECK I/O SYNC OF 74LVC257(U5) NO INPUT SIGNAL...
  • Page 16 3. NO RASTER STATE ON DIGITAL SIGNAL NO RASTER STATE ON ANALOG SIGNAL POWER CHECK OF 74LVC257(U5) : U37(3.3V) POWER CHECK OF AD9883 : U2(DVDD,AVD), L11(V33-ADC) POWER CHECK OF PW166(U8) : BA033T(U37) =>3.3V, LM317(U10) =>2.5STB POWER CHECK OF LVDS(U401) : L401(3.3V-LVDS) POWER CHECK OF SIL161(U201) : L4(AVCC),L5(PVCC) L9(DVCC),L210(OVCC) CONN(J10) CHECK...
  • Page 17 4. NO RASTER ON VIDEO SIGNAL INPUT NO RASTER ON VIDEO SIGNAL POWER CHECK OF SAA7114(U7) : L19,L21(3.3V) POWER CHECK OF SDA9400(U16) : L23(3.3V) POWER CHECK OF PW166(U8) : BA033T(U37) =>3.3V, LM317(U10) =>2.5STB POWER CHECK OF LVDS(U401) : L401(3.3V-LVDS) CHECK CABLE OF VCR,DVD NO INPUT SIGNAL CHECK VCR,DVD INPUT SIGNAL...
  • Page 18 5. SOUND TROBLE SHOOTING NO SOUND OUTPUT POWER CHECK OF MSP3420G(U49) : L34,L35,L36(5V) POWER CHECK OF TDA7268(U39) : 12V POWER CHECK OF PW166(U8) : BA033T(U37) =>3.3V, LM317(U10) =>2.5STB CHECK SOUND OF VCR,DVD,PC CHECK SOUND INPUT =>PC SOUND(J7) =>VIDEO SOUND (RDE,WHITE OF J702) NO INPUT SIGNAL CHECK THE PERIPHERAL IC CHECK MSP3420G(U49) INPUT...

  • Page 19: Printed Circuit Board

    C385 C215 J704 J703 C177 J710 ZD20 C204 J706 C410 C806 C405 C173 C840 R175 C223 R143 C179 R178 MODEL:L3000A P/N :6870T597A11 R209 R211 DATE :2002.11.27 C159 C143 C156 R236 C203 ZD806 RA29 RA32 RA33 RA37 R153 U801 R801 C803 J705 C172 RA28...
  • Page 21 3. POWER BOARD (Component Side) 4. CONTROL BOARD (Component Side) MODEL:L3000A(KEY) DATE :2002.11.28 P/N :6870T598C11 RIGHT LEFT DOWN SELECT SOURCE MENU POWER SW10 LED1...

  • Page 22: Exploded View

    EXPLODED VIEW - 22 -...

  • Page 23: Exploded View Parts List

    CORD, A/V, SCART CABLE UL 2863 #25 1500MM GRAY(85964) DH-3P-150SRC LM295B 6852TAZ006C CORD, A/V, DIN CABLE UL 2990-9C(5.5) 1560MM BLACK(9930) DH-150DIN LM295B 6852TAZ006D CORD, A/V, A/V KHC-LG-3-0010 UL 2851 #28-2C 1500MM BLACK(9930) KSD WITH CORE LM295B 6852TAZ006J CABLE, D-SUB, UL 2990-9C(7.5) DT 1870MM BLACK(9930) , DM -(L3000AL-AL) 6850TD9001G CABLE, D-SUB, UL 2990-9C(7.5) DT 1870MM PEARL WH T541K DM -(L3000AL-SL)

  • Page 24: Replacement Parts List

    REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2003. 3. 5. DATE: 2002. 3. 5. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 25 DATE: 2002. 3. 5. DATE: 2002. 3. 5. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C129 0CK473CK56A 47000PF 1608 50V 10% R/TP X7 C200 0CH3104K946 100000PF 50V Z F 2012 R/TP C130 0CK473CK56A 47000PF 1608 50V 10% R/TP X7...
  • Page 26 DATE: 2002. 3. 5. DATE: 2002. 3. 5. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C401 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R 0DS226009AA KDS226 TP KEC SOT-23 80V 30 C402 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R...
  • Page 27 DATE: 2002. 3. 5. DATE: 2002. 3. 5. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TRANSISTOR 6210TCE001G HH-1M3216-501 CERATEC 3216MM 6210TCE001G HH-1M3216-501 CERATEC 3216MM 0TR162309CA KSC1623 TP SAMSUNG SOT23 NP 6210TCE001G HH-1M3216-501 CERATEC 3216MM 0TR162309CA...
  • Page 28 DATE: 2002. 3. 5. DATE: 2002. 3. 5. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RJ1500D677 150 OHM 1/10 W 5% 1608 R/TP R128 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP 0RJ1500D677 150 OHM 1/10 W 5% 1608 R/TP R129...
  • Page 29 DATE: 2002. 3. 5. DATE: 2002. 3. 5. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R191 0RJ2200D677 220 OHM 1/10 W 5% 1608 R/TP R273 0RJ0102D677 10 OHM 1/10 W 5% 1608 R/TP R192 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP...
  • Page 30 DATE: 2002. 3. 5. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CONTROL BOARD 0CH3105H946 “1UF 25V 80%,-20% F(Y5V) 2012” 0CH3105H946 “1UF 25V 80%,-20% F(Y5V) 2012” LED1 0DLLT0089AA LITEON LTL-1BEDJ-0C2 TP GREE 0TR102009AJ KRC102S NPN SOT-23 TP KEC 0TR102009AJ KRC102S NPN SOT-23 TP KEC 0TR102009AJ KRC102S NPN SOT-23 TP KEC...
  • Page 31 BA7657 Multimedia ICs BLOCK DIAGRAM Red 1 input HD 1 input HD Sync Signal detector HD 2 input Green 1 input HD output Ground Red output DET. Blue 1 input Ground Green output Composite video input Red 2 input (Sync on Green) Syncsepa Ground Composite sync output...
  • Page 32 S524A40X10/40X20/40X40 SCL SDA S524A40X10/ 40X20/40X40 NOTE: The S524A40X10/40X20/40X40 is available in 8-pin DIP, SOP, and TSSOP package. Figure 2-2. Pin Assignment Diagram Table 2-1. S524A40X10/40X20/40X40 Pin Descriptions Circuit Name Type Description Type A0, A1, A2 Input Input pins for device address selection. To configure a device address, these pins should be connected to the V or V of the device.
  • Page 33 Start/Stop HV Generation Logic Timing Control Control Logic EEPROM Cell Array Slave Address Word Address 128 x 8 bits Comparator Pointer decoder 256 x 8 bits 512 x 8 bits Column Decoder Data Register and ACK Figure 2-1. S524A40X10/40X20/40X40 Block Diagram...

  • Page 34: Pin Configuration

    SIL161BCT100 C O N T R O L S G PO E V E N 8-bits RE D Q O 2 Q E13 Q O 3 Q E12 Q O 4 Q E11 Q O 5 Q E10 Q O 6 Q E9 Q O 7 Q E8...

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