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Manual Daewoo L510B1

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  • Daewoo L510B1 - page 1

    D AEW OO ELECTR ONICS CO ., L TD . http : //svc.dwe .co .kr Service Manual XGA COLOR MONIT OR Model : L510B1 September , 2001 ...

  • Daewoo L510B1 - page 2

    SAFETY PRECAUTIONS 1 GENERAL SAFETY INFORMA TION 2 SER VICING PRECAUTIONS 3 TECHNICAL INFORMA TION 6 GENERAL INFORMA TION 7 PIN CONNECTOR 8 CAUTIONS FOR ADJUSTMENT AND REP AIR 8 OPERA TION & ADJUSTMENT 9 ALIGNMENT PROCEDURE 14 TROUBLESHOOTING HINTS 15 BLOCK DIAGRAM 22 PCB LA YOUT 23 SCHEMA TIC DIAGRAM 27 EXPLODED VIEW & MECHANICAL P AR TS L ...

  • Daewoo L510B1 - page 3

    1 SAFETY PRECAUTIONS ◆ Safety Check Care should be taken while servicing the inverter that generates the high voltage to lighten CCFL of the LCD panel. ◆ Fire & Shock Hazard • Insert an isolation transformer between the analog color display and AC power line before servicing the chassis. • When servicing, pay close attention to the orig ...

  • Daewoo L510B1 - page 4

    2 GENERAL SAFETY INFORMATION ◆ T erms in the manual CAUTION Statements identify conditions or practices that could result in damage to the equipment or other property . W ARNING Statements identify conditions or practices that could result in personal injury or loss of life. ◆ T erms as marked on equipment CAUTION Statements indicate a personal ...

  • Daewoo L510B1 - page 5

    3 SERVICING PRECAUTIONS ◆ General Servicing Precautions 1. Always unplug the AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board, module, or any other instrument assembly . b. Disconnecting or reconnecting any electrical plug or other electrical connection. c. Connecting a test substitute in par ...

  • Daewoo L510B1 - page 6

    4 ◆ Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity . Such components are commonly called Electrostatically Sensitive (ES) Devices. The typical examples of ES devices are integrated circuits, some field-effect transistors, and semiconductor “chip” components. The fo ...

  • Daewoo L510B1 - page 7

    5 FIGURE 1. USE SOLDERING IRON TO PR Y LEADS ◆ IC Removal/Replacement Some utilized chassis circuit boards have slotted (oblong) holes through which the IC leads are inserted and then bent flat against the circuit foil. When holes are slotted, the following technique should be used to remove and replace the IC. When working with boards using the ...

  • Daewoo L510B1 - page 8

    6 ◆ Diode Removal/Replacement 1. Remove defective diode by clipping its leads as close as possible to diode body . 2. Bend the two remaining leads perpendicularly to the circuit board. 3. Observing diode polarity , wrap each lead out of the new diode around the corresponding lead on the circuit board. 4. Securely crimp each connection and solder ...

  • Daewoo L510B1 - page 9

    7 This TFT LCD monitor automatically scans all horizontal frequencies from 30KHz to 62KHz, and all vertical frequencies from 50Hz to 75Hz. This TFT LCD monitor supports IBM PC, PC/XT , PC/A T , personal System/2 (PS/2), Apple Macintosh, and compatible users crisp text and vivid color graphics display when using the following graphics adapters : (VG ...

  • Daewoo L510B1 - page 10

    8 Arrangement of 15-pin D-sub connector Pin Signal 1 Red 2 Green 3 Blue 4 GND 5 GND 6 GND - Red 7 GND - Green 8 GND - Blue 9 + 5Vdc 10 GND - H.Sync 1 1 GND - V .Sync 12 Bi-directional Data (SDA) 13 Horizontal Sync 14 V ertical Sync (VCLK) 15 Data Clock (SCL) 1 61 0 15 PIN CONNECTOR • Degaussing is always required when adjusting purity or converge ...

  • Daewoo L510B1 - page 11

    9 Control Panel Hot Key EXIT A UTO MENU BRIGHTNESS • The AUTO button launches the AUT O TRACKING function directly . • The EXIT button turns the OSD (On-Screen Display) window off. • This button moves from sub menu to top menu in the OSD window . • The MENU button turns the OSD window on. • This button moves from top menu to sub menu in t ...

  • Daewoo L510B1 - page 12

    10 Key Process OSD OFF MENU EXIT EXIT MENU EXIT MENU OSD OSD SHARPNESS SHARPNESS MENU UT L TY UT L TY UT L TY ...

  • Daewoo L510B1 - page 13

    11 Adjustment Procedur e Adjust the CLOCK control. Perform the AUTO POSITION . Is the H.Size proper? Is the noise displayed on the screen? Perform the AUTO TRACKING . Is the noise displayed on the screen yet? Is the noise displayed on the screen yet? Adjust the CLOCK FINE until the screen is cleared. Ye s Ye s Ye s Ye s No No No No End ...

  • Daewoo L510B1 - page 14

    12 Display horizontal & vertical frequency and polarity . STATUS Reset the screen to the Factory Preset Display Settings. RECALL AUTO POSITION Choose automatically the proper horizontal position and vertical position & size of the screen image. CONTRAST Adjust the contrast of image, the difference between light and dark areas on the screen. ...

  • Daewoo L510B1 - page 15

    13 Self Diagnosis When the monitor doesn’t display , if you press any key , Self Diagnosis screen is displayed. Self Diagnosis function checks if the status of the monitor is No Signal or Out of range. No Signal screen is displayed when the D-Sub signal connector is not connected or the status of the monitor is on DPMS mode. Out of Range screen i ...

  • Daewoo L510B1 - page 16

    14 Standard Check point 1. Power source : 100 - 240V ac, 50/60Hz. 2. Aging : T ake at least 20 minutes warm-up time. 3. Signal V ideo input : Analog 0.7Vpp 75 Ω terminal positive polarity Synchronizing : acceptable negative or positive at TTL level Max. Resolution : 1024 x 768 75Hz Frequency Horizontal : 30KHz - 62KHz V ertical : 50Hz - 75Hz (ava ...

  • Daewoo L510B1 - page 17

    15 1. Abnormal mode detect Is a input H-sync of ADC(pin 90, U2) correct? Abnormal mode detect No No Yes Yes Is waveform of pin 81 of ADC(U2) correct? Trouble in the H-sync input circuit. Trouble in ADC. Trouble in Scaler(U1). Yes TROUBLESHOOTING HINTS ...

  • Daewoo L510B1 - page 18

    16 2. T rouble in Power on No No Yes Yes Is 5VS line normal(pin 8 of CN2)? Trouble in U6 & Q5 and its ambient circuit. Check the power board (5VS of CN2A). Check on Scaler(U1). Is the Power LED toggled between on and off? Off No Yes On Is the power cord well connected? Refer to No video or No raster. Check if the power switch is on position and ...

  • Daewoo L510B1 - page 19

    17 3. No Raster Is 12V plugged in pin 1 of CN4A(power board)? No No Yes Yes Is the output of inverter correct? Check the output of D811(power board). Replace the inverter. Replace a LCD panal. < 2.5 > 2.5 Check the output of Q2 or pin 3 of U3. Trouble in Q6 or pin 3 of -com. ...

  • Daewoo L510B1 - page 20

    18 4. One color is missing Is the OSD color normal? One color is missing No Yes Check the output signal of Scaler. No Yes Is the input signal normal? Check the video signal cable or R,G,B con-ass’y. Trouble in the soldering of R,G,B data lines from output of ADC to Scaler(U1). Yes No Yes Are the R,G,B Digital values (every eight bits) correct on ...

  • Daewoo L510B1 - page 21

    19 5. No V ideo Has display image only white? No Yes Next page. No Yes Connection trouble. Check the output of scalier (pin 71, 72, 73, 74, 75) and soldering of CN5. No Yes Is pin 1 of Q6 3.3V? Check Q6, its ambient circuit and pin 27 of -com. Check if the CN5 wafer is well connected at the LCD panel. ...

  • Daewoo L510B1 - page 22

    20 Is OSD normal? Black No No Yes Yes Is the contrast at its maximum? 3. No raster or Check SDRAM. Set the contrast up to Max. Next Page. Yes No Yes Is the output of ADC correct? No Yes Is the input of ADC correct? Check the video input signal. Replace the main board (or replace ADC). Yes Check If the CN5 wafer is well connected at the LCD panel. N ...

  • Daewoo L510B1 - page 23

    21 No No Yes Yes Check 5VS, 5VD, 5VA, 6V, 3.3V of CN2A. Check the main board. Is the power cord well connected? Check if the power cord is correctly connected. Is the output of D812 6.2V? Yes Check ambient circuit of IC801. No 6. Power Problem ...

  • Daewoo L510B1 - page 24

    22 ASI320 Input Video Ra t e - H: 30~62kHz, V: 56~75Hz - Resolution: up to 1024*76 8 15PIN DSUB PRE-AMP Controller ADC PLL Offset & ampl ifier Buffer (74ACT14) Power Board Micom (MTV212M) EEPROM AC input rat e -Voltage: 100~240Va c -Frequency: 50/60 H z 12MHz DC-AV inverter ADI Scalar OSD 14.318MHz Controller Back light Panel dirver Output Vide ...

  • Daewoo L510B1 - page 25

    23 24 Main PCB Component Side Main PCB Solder Side PCB LAYOUT ...

  • Daewoo L510B1 - page 26

    25 Contr ol PCB Component Side Contr ol PCB Solder Side ...

  • Daewoo L510B1 - page 27

    26 P ower & D-Sub PCB Component Side P ower & D-Sub PCB Solder Side ...

  • Daewoo L510B1 - page 28

    27 Main Section SCHEMATIC DIAGRAM ...

  • Daewoo L510B1 - page 29

    SMPS Section 28 ...

  • Daewoo L510B1 - page 30

    29 EXPLODED VIEW & MECHANICAL PARTS LIST ...

  • Daewoo L510B1 - page 31

    30 RESISTOR Description Example: CAP ACIT OR Description Example: Fig & Part No Description Index Capacitors C28 HCFK104ZBA Chip Cera 50V Z C63 HCBK393KBA Chip Cera 50V K C44 HCQK102JBA Chip Cera 50V J T olerance C ± 0.25pF D ± 0.5% F ± 1pF J± 5 % K ± 10% P ± 100% ~ 0% Z ± 80% ~ – Fig & Part No Description Index R101 Resistors RD-4 ...

  • Daewoo L510B1 - page 32

    31 00020 W3415M731- CORD POWER C5 H03VV-F 3X0.75 1.8M BK 00040 9970800035 CABLE SIGNAL AS 15P+15P/DDC=1.5M(GY275A) B801 5PB13857-- COIL BEAD BI3857(AXIAL) C1 HCQK100JBA C CHIP CERA 50V CH 10PF J 1608 C10 HCBK223KBA C CHIP CERA 50V X7R 0.022MF K 1608 C101 HCENH101MD C CHIP ELECTRO MV 25V 100MF D8.0XH6.3 C102 HCENH101MD C CHIP ELECTRO MV 25V 100MF D8 ...

  • Daewoo L510B1 - page 33

    32 C69 HCEDC470MC C CHIP ELECTRO MV 6.3V 47MF 5DX5.2H C7 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 C70 HCEDC470MC C CHIP ELECTRO MV 6.3V 47MF 5DX5.2H C71 HCEKF100MC C CHIP ELECTRO MV 16V 10MF D4.0XH5.2 C72 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 C73 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 C74 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 C7 ...

  • Daewoo L510B1 - page 34

    33 FB12 HFFTB2601B COIL CHIP BEAD TB321611Z260 FB13 HFFTB2601B COIL CHIP BEAD TB321611Z260 FB14 HFFTB2601B COIL CHIP BEAD TB321611Z260 FB15 HFFTB2601B COIL CHIP BEAD TB321611Z260 FB16 HFFTB2601B COIL CHIP BEAD TB321611Z260 FB17 HFFTB2601B COIL CHIP BEAD TB321611Z260 FB18 HFFTB2601B COIL CHIP BEAD TB321611Z260 FB19 HFFTB2601B COIL CHIP BEAD TB321611 ...

  • Daewoo L510B1 - page 35

    34 R69 HRFS472JBA R CHIP 1/16 4.7K OHM J 1608 R72 HRFS102JBA R CHIP 1/16 1K OHM J 1608 R73 HRFS102JBA R CHIP 1/16 1K OHM J 1608 R80 RD-AZ302J- R CARBON FILM 1/6 3K OHM J R801 RD-2Z684J- R CARBON FILM 1/2 680K OHM J R803 RS01Z513J- R M-OXIDE FILM 1W 51K OHM J R804 RS01Z513J- R M-OXIDE FILM 1W 51K OHM J R805 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R806 ...

  • Daewoo L510B1 - page 36

    DAEWOO ELECTRONICS CO., LTDD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P .O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : "DAEWOOELEC" ...

Manufacturer Daewoo Category Computer Monitor

Documents that we receive from a manufacturer of a Daewoo L510B1 can be divided into several groups. They are, among others:
- Daewoo technical drawings
- L510B1 manuals
- Daewoo product data sheets
- information booklets
- or energy labels Daewoo L510B1
All of them are important, but the most important information from the point of view of use of the device are in the user manual Daewoo L510B1.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Daewoo L510B1, service manual, brief instructions and user manuals Daewoo L510B1. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Daewoo L510B1.

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A complete manual for the device Daewoo L510B1, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Daewoo L510B1 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Daewoo L510B1.

A complete Daewoo manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Daewoo L510B1 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Daewoo L510B1, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Daewoo L510B1, that we can find in the current document
3. Tips how to use the basic functions of the device Daewoo L510B1 - which should help us in our first steps of using Daewoo L510B1
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Daewoo L510B1
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Daewoo L510B1 in a specific country, if it was not possible to solve the problem on our own.

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