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NEC MultiSync LCD1550ME Service Manual
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NEC MultiSync LCD1550ME Service Manual

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PART NO. 599910589

SERVICE MANUAL

MultiSync
LCD1550ME
COLOR MONITOR
MODELS LCD1550ME (B) / -BK(B)
NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION
JUNE 2002
200206
08EK1ABD
08EK2ABD

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  • Page 1: Service Manual

    PART NO. 599910589 SERVICE MANUAL  MultiSync LCD1550ME COLOR MONITOR MODELS LCD1550ME (B) / -BK(B) NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION JUNE 2002 200206 08EK1ABD 08EK2ABD...
  • Page 2 WARNING The SERVICE PERSONNEL should have the appropriate technical training, knowledge and experience necessary to: • Be familiar with specialized test equipment, and • Be careful to follow all safety procedures to minimize danger to themselves and their coworkers. To avoid electrical shocks, this equipment should be used with an appropriate power cord. This equipment utilized a micro-gap power switch.

  • Page 3: Table Of Contents

    CONTENTS Page No. USER'S MANUAL ------------------------------------------------------------------- 1-1 SERIAL NUMBER INFORMATION --------------------------------------------- 2-1 DISASSEMBLY ----------------------------------------------------------------------- 3-1 ADJUSTMENT PROCEDURES -------------------------------------------------- 4-1 INSPECTION --------------------------------------------------------------------------- 5-1 TROUBLE SHOOTING ------------------------------------------------------------- 6-1 CIRCUIT DESCRIPTION ----------------------------------------------------------- 7-1 REPLACEMENT PARTS LIST --------------------------------------------------- 8-1 BLOCK DIAGRAM ------------------------------------------------------------------- 9-1 SCHEMATIC DIAGRAMS -------------------------------------------------------- 10-1...

  • Page 4: User's Manual

    User's Manual MultiSync LCD1550ME User’s Manual...
  • Page 5 If a power cord is not supplied with this equipment please contact your supplier. When operating the MultiSync LCD1550ME with a 220-240V AC power source in Australia, use the power cord provided with the monitor.
  • Page 6 Council Directive 73/23/EEC: – EN 60950 Council Directive 89/336/EEC: – EN 55022 – EN 61000-3-2 – EN 61000-3-3 – EN 55024 and marked with NEC-Mitsubishi Electric Visual Systems, Corp. MS Shibaura Bldg., 13-23, Shibaura 4-chome, Minato-Ku, Tokyo 108-0023, Japan English-2...

  • Page 7: Canadian Department Of Communications Compliance Statement

    Ce produit porte la marque ‘C-UL’ et se conforme aux règlements de sûrele Canadiens selon CAN/CSA C22.2 No. 950. FCC Information 1. Use the attached specified cables with the MultiSync LCD1550ME colour monitor so as not to interfere with radio and television reception.

  • Page 8: Declaration Of Conformity

    1250 N. Arlington Heights Road Itasca, Illinois 60143-1248 Tel. No.: (630)467-3000 Type of Product: Computer Monitor Equipment Classification: Class B Peripheral Models: MultiSync LCD1550ME We hereby declare that the equipment specified above conforms to the technical standards as specified in the FCC Rules. English-4...
  • Page 9 Contents Your new NEC MultiSync LCD monitor box* should contain the following: • MultiSync LCD1550ME monitor with tilt base • Power Cord • Video Signal Cable • Audio Cable • User’s Manual • CD ROM (includes complete User’s Manual in PDF format). To see the User’s Manual, Acrobat Reader 4.0 must be installed on your PC.

  • Page 10: Quick Start

    For Mac: Connect the MultiSync LCD1550ME Macintosh cable adapter to the computer (Figure C.1). Attach the 15-pin mini D-SUB end of the appropriate signal cable to the MultiSync LCD1550ME Macintosh cable adapter (Figure C.1). Tighten all screws. 4. Connect the 15-pin mini D-SUB of the video signal cable to the appropriate connector on the back of the monitor (Figure D.1).
  • Page 11 NOTE: The Vacation Switch is a true on/off switch. If this switch is on the OFF position, the monitor cannot be turned on using the front button. DO NOT switch on/off repeatedly. 8. No-touch auto adjust automatically adjusts the monitor to optimal settings upon initial setup for most timings.

  • Page 12: Figure D

    Connector cover Cable cover Clip B Figure D.1 Figure E.1 Vacation Switch Power Button Figure F.1 English-8...

  • Page 13: Figure R

    Tilt Grasp both sides of the monitor screen with your hands and adjust the tilt as desired (Figure TS.1). Remove Monitor Stand for Mounting To prepare the monitor for alternate mounting purposes: 1. Remove the connector cover and cable cover (Figure R.1). 2.

  • Page 14: Figure R

    Figure R.1 Figure R.2 Non-abrasive surface Figure R.3 English-10 1-11...
  • Page 15 7. This LCD monitor is designed for use with a flexible arm. Please use the attached screws (4pcs) when mounting. To meet the safety requirements the monitor must be mounted to an arm which guaranties the necessary stability under consideration of the weight of the monitor.

  • Page 16: English

    Controls OSM (On-Screen-Manager) Controls The OSM controls on the front of the monitor function as follows: To access OSM press any of the control buttons ( , , -, +, NEXT). Control Menu EXIT Exits the OSM controls. Exits to the OSM main menu. Moves the highlighted area left/right to select control CONTROL / menus.

  • Page 17: Auto Adjust

    CONTRAST Adjusts the image brightness in relation to the background. AUTO ADJUST Adjusts the image displayed for non-standard video inputs. Auto Adjust Automatically adjusts the Image Position, the H. Size and Fine setting. Position Controls LEFT/RIGHT Controls Horizontal Image Position within the display area of the LCD.
  • Page 18 Tools OSM POSITION You can choose where you would like the OSM control image to appear on your screen. Selecting OSM Location allows you to manually adjust the position of the OSM control menu left, right, down or up. OSM TURN OFF The OSM control menu will stay on as long as it is use.

  • Page 19: English

    MONITOR INFO. Indicates the model and serial numbers of your monitor. OSM Warning OSM Warning menus disappear with Exit button. NO SIGNAL: This function gives a warning when there is no signal present. After power is turned on or when there is a change of input signal or video is inactive, the No Signal window will appear.

  • Page 20: Recommended Use

    Recommended Use Safety Precautions and Maintenance FOR OPTIMUM PERFORMANCE, PLEASE NOTE THE FOLLOWING WHEN SETTING UP AND USING THE MULTISYNC LCD COLOUR MONITOR: • DO NOT OPEN THE MONITOR. There are no user serviceable parts inside and opening or removing covers may expose you to dangerous shock hazards or other risks.

  • Page 21: English

    • Allow adequate ventilation around the monitor so that heat can properly dissipate. Do not block ventilated openings or place the monitor near a radiator or other heat sources. Do not put anything on top of monitor. CAUTION • The power cable connector is the primary means of detaching the system from the power supply.
  • Page 22 • Avoid displaying fixed patterns on the monitor for long periods of time to avoid image persistence (after-image effects). • Get regular eye checkups. Ergonomics To realize the maximum ergonomics benefits, we recommend the following: • Use the preset Size and Position controls with standard signals. •...

  • Page 23: Specifications

    Specifications Monitor Specifications MultiSync LCD1550ME Monitor Notes LCD Module Diagonal: Active matrix; thin film 38 cm/15 inches transistor (TFT) liquid Viewable Image Size: 38 cm/15 inches crystal display (LCD); Native Resolution (Pixel Count): 1024 x 768 0.30 mm dot pitch;...
  • Page 24 *2 NEC-Mitsubishi Electronics Display cites recommended resolutions at 75 Hz for optimal display performance. NOTE: Technical specifications are subject to change without notice.

  • Page 25: Features

    Features Colour Control System: Allows you to adjust the colours on your screen and customize the colour accuracy of your monitor to a variety of standards. Reduced Footprint: Provides the ideal solution for environments requiring superior image quality but with size and weight limitations. The monitor’s small footprint and low weight allow it to be moved or transported easily from one location to another.
  • Page 26 VESA Standard Mounting Interface: Allows users to connect their MultiSync monitor to any VESA standard (75 mm pitch) third party mounting arm or bracket. Allows for the monitor to be mounted on a wall or an arm using any third party compliant device. English-22 1-23...
  • Page 27 “ghost” of that image remains, the monitor should be turned off for one hour to erase the image. NOTE: As with all personal display devices, NEC-Mitsubishi Electronic Displays recommends using a screen saver at regular intervals whenever the screen is idle.
  • Page 28 Image is unstable, unfocused or swimming is apparent • Signal cable should be completely attached to the computer. • Use the OSM Image Adjust controls to focus and adjust display by increasing or decreasing the fine total. When the display mode is changed, the OSM Image Adjust settings may need to be readjusted.

  • Page 29: No Sound

    No Sound • Check to see if speaker cable is properly connected. • Check to see if mute is activated. • Check to see if volume in OSM is set at minimum. English-25 1-26...
  • Page 30 TCO’99 This is a translation of the original English TCO'99 document. MultiSync LCD1550ME White Model (L15XA231-BN) Congratulations! You have just purchased a TCO’99 approved and labeled product! Your choice has provided you with a product developed for professional use. Your purchase has also contributed...
  • Page 31 The requirements cover a wide range of issues: environment, ergonomics, usability, emission of electrical and magnetic fields, energy consumption and electrical and fire safety. The environmental demands concern restrictions on the presence and use of heavy metals, brominated and chlorinated flame retardants, CFCs (freons) and chlorinated solvents, among other things.
  • Page 32 Cadmium** Cadmium is present in rechargeable batteries and in the colourgenerating layers of certain computer displays. Cadmium damages the nervous system and is toxic in high doses. TCO’99 requirement states that batteries, the colourgenerating layers of display screens and the electrical or electronics components must not contain any cadmium.
  • Page 33 TCO’95 This is a translation of the original English TCO'95 document. MultiSync LCD1550ME Black Model (L15XA231-BNBK) Congratulations! You have just purchased a TCO’95 approved and labeled product! Your choice has provided you with a product developed for professional use. Your purchase has also...
  • Page 34 The environmental demands concern restrictions on the presence and use of heavy metals, brominated and chlorinated flame retardants, CFCs (freons) and chlorinated solvents, among other things. The product must be prepared for recycling and the manufacturer is obliged to have an environmental plan which must be adhered to in each country where the company implements its operational policy.
  • Page 35 Cadmium** Cadmium is present in rechargeable batteries and in the colourgenerating layers of certain computer displays. Cadmium damages the nervous system and is toxic in high doses. TCO’95 requirement states that batteries may not contain more than 25 ppm (parts per million) of cadmium. The colourgenerating layers of display screens must not contain any cadmium.

  • Page 36: Serial Number Information

    Serial Number Information Refer to the serial number information shown below. EX.) SERIAL NUMBER LABEL Model Name : LCD1550ME LCD1550ME-BK SERIAL NO. : g g g g g g g g g Manufactured Year : ( Last digit ) Manufactured Month : January to September 1 to October...

  • Page 37: Disassembly

    Use the proper screwdriver. If oversize or undersize screwdriver is used, screws may be damaged. g Assembly is the opposite process of disassembly. SYMBOL CODE DESCRIPTION CABINET COLOR 79PL1836 COVER(CONNECTOR) White 79PL1844 COVER-CONNECTOR-NMV(NEC)- Black 79PL1825 COVER CABLE White 79PL1833 COVER CABLE(LCD1550MBK B) Black SCREW-M4*12 SCREW-T3*12...
  • Page 38 SYMBOL CODE DESCRIPTION CABINET COLOR 79PL1897 REAR COVER ASS'Y-NMV-NEC White 79PL2043 REAR COVER ASS’Y-NEC-NEC- Black SYMBOL CODE DESCRIPTION BRACKET VESA ASS’Y 79PL1915 RUBBER CUSHION(REAR COVER)
  • Page 39 SYMBOL CODE DESCRIPTION SCREW-M3*6 79PL1910 SHIELD-ASS'Y-NEC-FA150ATU SYMBOL CODE DESCRIPTION 79PL1912 INSULATOR-NEC-FA150ATUA-B 79PL1913 INSULATOR-NEC-FA150ATUA-P 79PL1911 INSULATOR-NEC-FA150ATUA-P...
  • Page 40 SYMBOL CODE DESCRIPTION 79PL2044 INTERFACE BD 79PL2047 POWER BD 79PL1982 INVERTER-DC-AC-AMBIT:T15I SCREW-M3*6 SCREW-M4*8 SCREW-M3*6(Flat) SPECIAL(HEX) P307 P306 P304 P301 P003 P804...
  • Page 41 SYMBOL CODE DESCRIPTION 79PL1819 FUNCTION KEY BD-NEC-FA150 79PL1901 HEAD PHONE BD-NEC-FA15AA SCREW-M3*8 79PL1464 SPEAKER 4P N13AA12PCH22 J SCREW-M2.6*10 79PL1462 SW POWER HF606A1GGATA HUA SYMBOL CODE DESCRIPTION CABINET COLOR SCREW-M3*12 79PL2041 FRONT COVER ASS’Y-NMV-NEC White 79PL2042 FRONT COVER ASS’Y-NEC-NEC Black...
  • Page 42 SYMBOL CODE DESCRIPTION SCREW-M3*5 BRACKET CHASSIS BASE ASS'Y 79PL2039 LCD-15-CLAA150XG01-CPT” 79PL2036 HARNESS-FFC-45P(0.5)-95/1 79PL2037 HARNESS-FFC-30P(0.5)-115/...
  • Page 43 SYMBOL CODE DESCRIPTION CABINET COLOR 79PL1905 HINGE-L-NEC-NEC-FA150ATUA 79PL1906 HINGE-R-NEC-NEC-FA150ATUA 79PL1835 STAND FRONT White 79PL1845 COVER-STAND FRONT-NMV(NEC Black SCREW-M4*8(SPECAL) SYMBOL CODE DESCRIPTION CABINET COLOR 79PL1898 STAND-BASE-NMV-NEC-FA15AA White 79PL2040 BASE ASS’Y-NEC-NEC-FA15AA Black 79PL1907 BRACKET-HINGE-NEC-FA150AT SCREW-M4*16(DOUBLE WASHER)
  • Page 44 SYMBOL CODE DESCRIPTION 79PL1875 BRACKET-STAND PLATE-NEC- 79PL1869 FOOT RUBBER SCREW-M3*10...

  • Page 45: Adjustment Procedures

    ADJUSTMENT PROCEDURES TABLE OF CONTENS Page Application ------------------------------------------------------------------------------------------------------------- 4-2 Basic operation-------------------------------------------------------------------------------------------------------- 4-2 2.1. General conditions --------------------------------------------------------------------------------------------------- 4-2 2.2. Basic function --------------------------------------------------------------------------------------------------------- 4-2 2.2.1. Key layout ----------------------------------------------------------------------------------------------------------- 4-2 2.2.2. Aging ----------------------------------------------------------------------------------------------------------------- 4-2 2.2.3. Service mode ------------------------------------------------------------------------------------------------------- 4-3 Set adjustments------------------------------------------------------------------------------------------------------- 4-4 3.1. Measuring instruments to be used ------------------------------------------------------------------------------- 4-4 3.2.

  • Page 46: Application

    1. Application This specification shall be applied to the adjustment of the LCD1550ME set. 2. Basic operation 2.1. General conditions Unless otherwise specified, adjustments shall be carried out under the following conditions: 1) Power source voltage: AC 100 - 120V/ 220 - 240V ± 5%, 50/60Hz 2) Equipment to be used: Equipment that can generate an output of the adjusted VG-819 unit or equivalent 3) Connections: Connections are made to the D-Sub connector of the unit under inspection by means of the connector that can carry each output of the VG-819.

  • Page 47: Service Mode

    4) If there is no particular operation, an all white screen (255/255 gradation) is displayed. 5) Operate the(4) RIGHT and (3)LEFT keys in this state. Then, operation for the gradation becomes possible. It is also possible to change the pattern by operating the (4)RIGHT and (3)LEFT keys. 6) When withdrawing from the aging mode, press the EXIT key.

  • Page 48: Set Adjustments

    3. Set adjustments 3.1. Measuring instruments to be used The measuring instruments considered necessary for the adjustment of the LCD1550ME set are specified below. 1) Equipment that can generate an output of the adjusted VG-819 unit or equivalent 3.2. Power source voltage 100 - 120V/ 220 - 240V ±...

  • Page 49: Manual Adjustments

    3.6. Manual adjustments 3.6.1. Input video signal VG-819 setting values MODE Signal 1 Signal 2 VESA 1024x768@75Hz VGA 640x480 DOT CLOCK [MHz] 78.75 25.18 TOTAL [DOT] 1312 DISP [DOT] 1024 SYNC PULSE [DOT] BACK [DOT] HDstrat [DOT] Hdwidth [DOT] INTERLACE TOTAL DISP SYNC PULSE...

  • Page 50: Video Gain Adjustments

    3.6.2. VIDEO gain adjustments Use the signal source for which the analog output (R/G/B) has been adjusted to 0.7V. 1) Enter a signal 1 input of SXGA 1024x768(75Hz). 2) Turn off the display pattern completely and obtain an all black screen. 3) Assume the FACTORY mode in the procedures of Paragraph 2.2.3 and display the SERVICE menu.

  • Page 51: Factory Setting

    3.6.3. Factory setting 1) Enter a signal input. (no prescribe) 2) Assume the FACTORY mode in the procedures of Paragraph 2.2.3 and display the SERVICE menu. 3) Press the NEXT key three times and advance to the tag |4|. 4) Use the (4) RIGHT or (3) LEFT keys and adjust the cursor to [OSD DESIGN],[OSM SELECT] and [URL].

  • Page 52: Inspection

    INSPECTION TABLE OF CONTENS Page Set Inspection----------------------------------------------------------------------------------------------------- 5-2 1.1.1. Application ----------------------------------------------------------------------------------------------------------- 5-2 1.2. Inspection conditions --------------------------------------------------------------------------------------------- 5-2 1.2.1. Power source voltage --------------------------------------------------------------------------------------------- 5-2 1.2.2. Equipment to be used--------------------------------------------------------------------------------------------- 5-2 1.2.3. Inspection cables/connections ---------------------------------------------------------------------------------- 5-2 1.2.4. Brightness setting -------------------------------------------------------------------------------------------------- 5-2 1.2.5. Inspection mode ---------------------------------------------------------------------------------------------------- 5-2 1.2.6.

  • Page 53: Set Inspection

    1. Set Inspection 1.1.1. Application The inspection procedures specified in this item shall be applied to the inspection of the LCD1550ME unit. 1.2. Inspection conditions Unless otherwise specified, inspection shall be carried out under the following conditions. 1.2.1. Power source voltage AC voltage: AC 100 - 120V/ 220 - 240V ±...

  • Page 54: Inspection Mode Setting

    1.2.8. Inspection mode setting The respective setting data shall be the data for the VG-819. Signal VG-819 setting values Mode Not used CLOCK [MHz] 28.322 35.500 21.053 28.322 35.500 HPERIOD [DOT] HDISP [DOT] HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL VDISP...
  • Page 55 Signal VG-819 setting values Mode CLOCK [MHz] 25.18 30.24 31.5 31.5 36.0 HPERIOD [DOT] HDISP [DOT] HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL VDISP VSYNC VBACKP EQP FP EQP BP SERRATION VDSTART VDLINE SCAN Nonint Nonint Nonint Nonint Nonint OUTPUT NRZ/RZ...
  • Page 56 Signal VG-819 setting values Mode CLOCK [MHz] 36.0 40.0 49.5 50.0 56.25 HPERIOD [DOT] 1024 1056 1056 1040 1048 HDISP [DOT] HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL VDISP VSYNC VBACKP EQP FP EQP BP SERRATION VDSTART VDLINE SCAN Nonint Nonint...
  • Page 57 Signal VG-819 setting values Mode CLOCK [MHz] 57.28 65.0 70.49 75.0 78.75 HPERIOD [DOT] 1152 1344 1344 1328 1312 HDISP [DOT] 1024 1024 1024 1024 HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL VDISP VSYNC VBACKP EQP FP EQP BP SERRATION VDSTART VDLINE...
  • Page 58 Signal VG-819 setting values Mode Not used CLOCK [MHz] 94.5 94.50 108.00 126.00 107.50 HPERIOD [DOT] 1376 1528 1800 1680 1664 HDISP [DOT] 1024 1152 1280 1280 1280 HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL 1000 1000 1078 VDISP 1024 VSYNC...
  • Page 59 Signal VG-819 setting values Mode CLOCK [MHz] 108.00 117.00 135.00 135.00 94.50 HPERIOD [DOT] 1688 1632 1688 1664 1480 HDISP [DOT] 1280 1280 1280 1280 1152 HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL 1066 1067 1066 1066 VDISP 1024 1024 1024...
  • Page 60 Signal VG-819 setting values Mode CLOCK [MHz] 108.00 162.00 108.00 HPERIOD [DOT] 1600 2160 1688 HDISP [DOT] 1152 1600 1280 HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL 1250 1066 VDISP 1200 1024 VSYNC VBACKP 6380 EQP FP EQP BP SERRATION VDSTART VDLINE...
  • Page 61 Signal VG-819 setting values Mode CLOCK [MHz] 34.40 34.40 HPERIOD [DOT] HDISP [DOT] HSYNC [DOT] HBACKP [DOT] HDSTART [DOT] HDWIDTH [DOT] VTOTAL 1024 1024 VDISP VSYNC VBACKP EQP FP EQP BP SERRATION VDSTART VDLINE SCAN Nonint Nonint OUTPUT NRZ/RZ NEGA NEGA POSI NEGA...
  • Page 62 Note 1: According to the designation of sync signals and the setting of each inspection mode, the analog outputs (BNC) of the signal generator shall be connected as specified below. (Except the cases when otherwise specified) 1) SEPARATE: R/G/B CONNECTION, HS ←→ H, VS ←→ V, CS not connected Note 2: Screen of Option 2 5-11...

  • Page 63: Osm Control Operation

    1.3. OSM control operation Each OSM function is available by pressing the push-button switches (EXIT,3,4, -, +, NEXT, RESET) allocated in the lower section of the front bezel (or the control PWB when a PWB unit only is furnished). 1.3.1. Switch functions The basic functions of the respective push-button switches (or called the keys, but in the same meaning) are described below.

  • Page 64: Power On

    1.4. Power ON 1) Connect an AC power cable to the unit being inspected. 2) Connect the VG-819 cable to the unit being inspected. Any input connector is acceptable. 3) Turn on the POWER switch of the VG-819 to generate an output of Signal 17. 4) There is a vacation switch (a seesaw switch) at the left side of the unit being inspected.

  • Page 65: Inspection On Automatic Adjustment Function

    8) Get AUTO ADJUST highlighted with the (-) and (+) keys. Contrast Auto Adjust menu 9) Press the (-) and (+) keys and wait until the OSM display is restored to the former display. At that time, confirm that the screen is normally displayed. 1.5.2.

  • Page 66: Inspection On Input Signal Identification

    1.5.3. Inspection on input signal identification Purpose of inspection: Confirming that a normal display is obtainable for each signal input. Unless otherwise specified, the display pattern is as shown in the initial screen, conforming to 1.2.8 [Inspection mode setting]. --- Inspection of signal input --- 1) According to the table below, make setting of the input connector and the signal, and enter a signal input.

  • Page 67: Inspection On Audio Function

    1.5.4. Inspection on Audio function Purpose of inspection: Confirming that the audio function works normally. 1) It connects audio-in with the PC or the audio player and it enters a sound. PC or Audio Player AUDIO INPUT 2) Enter Signal 17 through INPUT. 3) Display the OSM menu.

  • Page 68: Setting Before Shipment

    1.6. Setting before shipment In order to recover the initial conditions of all settings, the contents of the memory are reset before shipment. This reset process involves actions in regard to the memory of signal modes. Therefore, these actions should be taken after the completion of all electrical inspection and display inspection. 1) Enter an input of Signal 4 through INPUT.

  • Page 69: Power Source/Earth Connections

    1.7.2. Power source/earth connections a. Checks on the power source/earth connections The earth side of the cord or the earth wire of the inlet filter for the cord set shall be visually checked to see that it is connected to the chassis block of the unit as specified below. 1) The earth wire color shall be spiral of green and yellow.

  • Page 70: Leakage Current Test

    1.7.4. Leakage current test A leakage current shall be measured under the conditions specified below, in order to confirm that the requirements of the judgment standard are met. 1) Measuring conditions • Measuring instrument : Leakage current meter (A 1500Ω resistor shall be incorporated, together with a bypass capacitor of 0.15µF.) •...

  • Page 71: External Inspection On The Lcd Module

    2. External inspection on the LCD module 2.1. External inspection of the display surface The display surface shall be visually inspected according to the inspection items specified below. In cases of the discovery of extreme defects or doubtful judgment, final judgment should be made on the basis of relevant detailed standards for inspection.
  • Page 72 Defect type Limit 0.01mm ≤ W ≤ 0.05mm N ≤ 4 L ≤ 10mm Scratch 0.01mm ≤ W N = 0 10mm < L 0.05mm < W N = 0 0.15mm ≤ Φ ≤ 0.4mm N ≤ 4 Visual Defect Dent 0.4mm <...

  • Page 73: Inspection Of Plug & Play Communication And Osm "Monitor Information" For Model Name/ Serial Number

    3. Inspection of PLUG & PLAY communication and OSM "MONITOR INFORMATION" for model name/ serial number 3.1. A construction of System This system should be connected as shown below. P R O G R A M P ro g ra m D is k P A R T N o .

  • Page 74: Operational Procedures

    3.3. Operational procedures 1. Start PNP.EXE from DOS mode or DOS pronto of Windows. 2. Operation key assignment • Determine the operation mode with the F1 ~ F9 and ESC keys. F1 (Select Model) : Setting file changeover for respective models F4 (Read) : EDID data for reading F5 (Write Input 1)

  • Page 75: Edid Data File

    3.4. EDID data file The EDID data file text is shown below. When you write or inspect EDID for this monitor, the following table can be used. file name : L1550ME.TXT Table 1 Data list (Management number : L1550ME) Week of manufacture = Month of manufacture × 4 Note 1: address 10h Note 2: address 11h Year of manufacture - 1990...

  • Page 76: Trouble Shooting

    TROUBLE SHOOTING TABLE OF CONTENTS page 1. No display of screen(Screen is black ,color of LED is amber) --------------------------------6-2 2. Nothing displays on screen(Screen is black ,color of LED is green) ------------------------6-3 3. Checking the back light unit ---------------------------------------------------------------------------6-6 4. Abnormal screen -----------------------------------------------------------------------------------------6-7 5.

  • Page 77: No Display Of Screen(Screen Is Black ,Color Of Led Is Amber)

    1. No display of screen (Screen is black, color of LED is amber) Does OSM display when you push key button. When a signal isn't being Pressed "No OSM display" section. inputted, it is indicated with "NO VIDEOINPUT". It is indicated with "OUT OF RANGE"...

  • Page 78: Nothing Displays On Screen(Screen Is Black ,Color Of Led Is Green)

    2. Nothing displays on screen (Screen is black, color of LED is green) Is backlight lit? Refer "Checking the backlight unit" section Does computer output Check the video cable for failure. RGB video signals? Check the host for output signal with all black only.
  • Page 79 Continue Check the 3.3 V power are supplied on I310 pin 2. Check if the voltage on I310 pin3 that is high level DC at 5V. Failure point Printed wire broke between P301 and I310 Failure point I310 Failure Is a dot clock being outputted under the condition that a LCD module is connected to P307 pin 44? Failure point...
  • Page 80 Continue Check the data enable of positive polarity are output on P307 pin 42. Failure point 1) I306 failure 2) Printed wire broke between I306 and P307 pin 37. Check the data signal output on P306 and P307 R, G, B data pin. Failure point 1) I306 failure 2) Printed wire broke between I306 and P306 data line...

  • Page 81: Checking The Back Light Unit

    3. Checking the back light unit Is +15V supplied to P803 pin 3, 4 to inverter PWB? Failure point Inverter cable disconnection. Check the INV_EN signal of the rectangle input I309 pin 5 at TTL high level Is a "H" level being output in the TTL level from I302 pin 2 Or, is INV_EN signal of the rectangle being output? Failure point Printed wire broke between...

  • Page 82: Abnormal Screen

    4. Abnormal screen Check the R, G, B video signal from computer input on D-Sub R, G, B connector. Failure point 1) No R, G and B video signal output from host computer. Check computer 2) Video signal cable disconnection. Check the R, G, B input signals on I306 pin 95, 91, 87 respectively that their level is 0.7Vp-p maximum.
  • Page 83 Continue Check the negative vertical sync pulse output to P307 pin 40 from I306 pin 73 at TTL level. Failure point 1) Printed wire broke between I306 pin 73 and P307 pin 40. 2) R351 open 3) C384 short Check the positive DE pulse output to P307 pin 42 from I306 pin 43 at TTL level.

  • Page 84: No Osm Display

    5. No OSM display Check the input of pulse from I306 pin 98, 103, 99, 102, 104, 105. Failure point 1) Printed wire broke between I306 pin 99 and I302 pin 17. 2) Printed wire broke between I306 pin 102 and I302 pin 21. 3) Printed wire broke between I306 pin 104 and I302 pin 20.

  • Page 85: Abnormal Plug And Play Operation

    6. Abnormal plug and play operation Confirm the input of serial clock on I308 pin 6 SCL at TTL level. Failure point I308 failure Failure point 1) The video cable may have failed or may not have connections for DDC. 2) Between I308 pin 6 and P302 pin 14 may have failed.

  • Page 86: Checking The Interface Circuit Of Sync Signal

    7. Checking the interface circuit of sync signal 7.1 Checking the control circuit of horizontal sync pulse Check the horizontal sync signal on I306 pin 150 TTL level. Failure point 1) Video cable may have failed. 2) Printed wire broke between P302 pin 13 and I306 pin 150. 3) FB302, R332 open.

  • Page 87: Checking The Resolution Change Ic Movement

    8. Checking the resolution change IC movement Is there +3.3V supply on I306 pin 77, 79, 84, 96, 92, 88, 8, 129, 136, 139, 137, 143, 11, 21, 58, 108, 149, 12, 33, 40 and 65. Proceed "Checking the DC/DC converter circuit" section. Is 20MHz clock input to I306 pin 141 at TTL level? Is 20MHz clock output from X301 at TTL level? Failure point...

  • Page 88: No Power On

    9. No power on 9.1 No power on (1) Check output voltage +5V, +15V is right or not. It is not power board problem. Check power switch is turn on or not. Turn switch on. Check power cord(P801), Signal cable(P302), P802, P803 is connected right or not. Connect it right.
  • Page 89 9.2 No power on (2) Check +5V power is supplied from power source. Failure point Power source failure. Is LED turned on in amber momentarily when a power button is pushed ? Failure point Power source failure. Process "Checking the operation of CPU" section. 6-14...

  • Page 90: Checking The Dc/Dc Converter Circuit

    10. Checking the DC/DC converter circuit Check the output of 3.3V line voltage from I310 pin 2. Is the output FB320 being inputted to I315 pin 3? Failure point Printed wire broke between I310 pin 3 and output of FB321. Failure point I310 failure Failure point...

  • Page 91: Checking The Operation Of Cpu

    11. Checking the operation of CPU Is there +5.0V supply on I302 pin 8. Failure point Printed wire broke between output of FB319 and I302 power supply pin. Is 20MHz clock input to I302 pin 11 and 12 at TTL level? Failure point X301 failure.

  • Page 92: Checking The Audio Circuit

    12. Checking the audio circuit Is a cable with the host PC connected? Failure point Audio cable disconnection. Aren't the setups of the host PC a minimum and off? Failure point The setup of the host PC is changed. Is correct output waveform being inputted from JK011 pin 2, 3 of the host PC? Failure point Audio cable disconnection.

  • Page 93: Check The Inverter Board Circuit

    13. Check the inverter board circuit Check Vin pin is around 15.5V. On/Off pin is over 2V. Brightness pin is between 0.3V and 3.0V. It is not inverter problem. Check IC pin 3 around 5V. Check Q1, Q2, Q8, D1, F1 and repair them. Check one of these components was short to GND.
  • Page 94 Continue Check the Royer circuit. Check the Q17, Q20, Q5, Q6, C13 and repair them. Check the transformer and repair them. Check the one of these components was short to GND. Check the H.V. and balance circuit. Check the C3, C7, C12, C20, L3 and repair them. Check the Feedback and protection circuit.

  • Page 95: Circuit Description

    CIRCUIT DESCRIPTION TABLE OF CONTENTS Page 1. Audio circuit ----------------------------------------------------------------------------------------- 7-2 1.1 Audio input ------------------------------------------------------------------------------------ 1.2 Audio output ----------------------------------------------------------------------------------- 2. Power supply ------------------------------------------------------------------------------------- 3. On-screen circuit --------------------------------------------------------------------------------- 4. Video input circuit -------------------------------------------------------------------------------- 5. Definition converter LSI peripheral circuit ------------------------------------------------- 6. System reset, LED control circuit ------------------------------------------------------------ 6.1 System reset ------------------------------------------------------------------------------------...

  • Page 96: Audio Circuit

    1. Audio circuit (Circuit diagrams Main PWB) 1.1 Audio input The audio signal input received from the audio input terminal (JK011) is applied to the amplifier I001 of 4 (L-CH) and 9 (R-CH) through the low-pass filter consisting of R040, R041, R042, R043, C040 and C041. In this amplifier, controls of Volume, and mute are conducted.

  • Page 97: On-Screen Circuit

    7.3 Regulation : If output voltage +5V goes up, the R terminal of I803 gets more bias, accordingly photo transistor and photo diode flows more current. The voltage of pin 2 goes up too, making the pulse width of pin 6 to become narrower. So the output voltage +5V will be pulled down to a stable value. 7.4 OVP : If +5V goes up too much, the induced voltage on pin 4 of T802 becomes large also.

  • Page 98: System Reset, Led Control Circuit

    6. System reset, LED control circuit (Circuit diagram MAIN PWB) 6.1 System reset System reset is performed by detecting the rising and falling of the 5V source voltage at I301. 6.2 LED control circuit Green / amber is lit with the control signal of the LED GREEN and LED AMBER signal pin 32, 33 from I302 (Circuit diagram MAIN PWB).
  • Page 99 (2) Out of range This out-of-range mode is assumed when the frequency of the horizontal / vertical signal is as specified below. Vertical frequency : Below 56.2Hz or above 75.1Hz Horizontal frequency : Below 31.5KHz or above 60KHz (3) Power save mode. The power save mode is assumed when the horizontal / vertical signals are as specified below.

  • Page 100: User Control

    9.3 User Control General Key Description −ADJUST+ EXIT wCONTROL8 NEXT RESET/MUTE Exit : Turn off OSM menu, Exit sub menu. Control : Move the green cursor and select control items. Adjust : Change the value of each function / Enter to submenu / Proceed auto adjust / Proceed reset Next : Move the NEXT tag Reset...

  • Page 101: I 2 C Bus Control

    9.4.2 Functions Major function of I306 are as follows: (1) Expansion of the display screen. (2) Timing control for various signal types. (3) Power-supply sequence (LCD panel). 9.5 I C bus control 9.5.1 Related ports of I306 Post Pin No. Signal name Function P3.5...

  • Page 102: Power Off Sequence

    9.7 Power OFF sequence When the POWER switch is pressed while the power supply is ON, the POWER ON signal is turned “H”. When shown below. His “H” potential is detected, the CPU begins to turn off the respective power supplies according to the sequence.

  • Page 103: Inverter

    10. Inverter 10.1 Circuit Diagram circuit Buck Input Power Royer circuit circuit Balance circuit Protection ON/OFF circuit circuit Lanp:1 Lanp:2 Feedback circuit 10.2 Inverter basic function This is a Dc-AC Inverter which is developed for driving 2 Cold Cathode Fluorescent Lamp (CCFL) in LCD panel backlight system.
  • Page 104 (3) Buck circuit Used the PMOSFET to control the input power. Q/S13457DW 100uH Volt Vo=DxVin=(Ton/Ts)xVin LM339 OUTPUT Vout (avg) = Vin*D = Vin*(Ton/Ts). Ts: Transformer period Ton: turn on period. EX: Vout(avg) = 10V, Vin = 15V U, D=(10/15)*100%=66.66% (4) Royer circuit C13 waveform 100uH 0.22u...
  • Page 105 (5) H.V and balance circuit The H.V connect to the lamps and supply the power to drive the lamps. The balance circuit is use L,C,R resonant to control the output current. It can get the same output current even the load is different. (6) Feedback circuit The sense voltage of the feed back is set at 2.5 voltage.

  • Page 106: Replacement Parts List

    REPLACEMENT PARTS LIST The components specified for Model LCD1550ME(B) SYMBOL PART NO DESCRIPTION *** ICS *** I001 79PL1440 IC TDA7496L 20P PDIP SG I301 79PL1948 IC-M51953AFP-8P-SOP I302 79PL1951 IC-MTV312MV64-44P-PLCC-MY I303 79PL1950 IC-TTL-NC7SZ04M5X-5P-FAIR I304 79PL1447 IC 24LC32A 8P SOP MICROCH I305 79PL1949 IC-TTL-NC7SZ08M5X-5P-FAIR I306...
  • Page 107 SWITCH-TACT-TSAB-3-260GF- S606 79PL1975 SWITCH-TACT-TSAB-3-260GF- S607 79PL1975 SWITCH-TACT-TSAB-3-260GF- S608 79PL1975 SWITCH-TACT-TSAB-3-260GF- *** PWB ASSYS *** FUKEYB 79PL1819 FUNCTION KEY BD-NEC-FA150 HEPNBD 79PL1901 HEAD PHONE BD-NEC-FA15AA INTBD 79PL2044 INTERFACE BD INVA 79PL1982 INVERTER-DC-AC-AMBIT:T15I POWEBD 79PL2047 POWER BD *** COILS & FILTERS ***...
  • Page 108 SPEAKER 4P N13AA12PCH22 J V001 79PL2007 CABLE-VIDEO-DSUBX2-2000MM V002 79PL2036 HARNESS-FFC-45P(0.5)-95/1 V003 79PL2037 HARNESS-FFC-30P(0.5)-115/ V006 79PL2038 HARNESS--12P-330MM-CG150- V150 79PL2039 LCD-15-CLAA150XG01-CPT" X301 79PL1053 CRYSTAL 20MHZ HC-49/US *** APPEARANCE PARTS *** B0106 79PL1897 REAR COVER ASS'Y-NMV-NEC B01U 79PL1836 COVER(CONNECTOR) B02P 79PL1835 STAND FRONT...
  • Page 109 BRACKET-STAND PLATE-NEC- B03R 79PL1869 FOOT RUBBER B02M 79PL1905 HINGE-L-NEC-NEC-FA150ATUA B02N 79PL1906 HINGE-R-NEC-NEC-FA150ATUA B02Q 79PL1907 BRACKET-HINGE-NEC-FA150AT 79PL2041 FRONT COVER ASS'Y-NMV-NEC *** PRINTED & PACKING MATERIALS *** B0102 79PL2076 LABEL-MODEL LABEL-NMV--NE 79PL2075 CARTON-NMV--NEC-FA15AA(9) 79PL1881 CUSHION-FOAM-EPS-LCD1550M 79PL1841 PLASTIC BAG 79PL2005 BAG-PE ORDINARY-ALL MODEL Y001...
  • Page 110 SYMBOL PART NO DESCRIPTION R317 79PL1004 CHIP-R 470H 1/8W J 805 R318 79PL1004 CHIP-R 470H 1/8W J 805 R319 79PL1296 CHIP-R KOHM 10 1/10W J 06 R320 79PL1302 CHIP-R KOHM 4.7 1/10W J R321 79PL1302 CHIP-R KOHM 4.7 1/10W J R322 79PL1302 CHIP-R KOHM 4.7 1/10W J...
  • Page 111 SYMBOL PART NO DESCRIPTION R803 79PL2059 RES. MOF-KOHM-100-2W-J-HO R805 79PL2059 RES. MOF-KOHM-100-2W-J-HO R806 79PL0741 MOF KOHM 33 3W J HOR R807 79PL0086 CF OHM 4.7 1/4W J T26 R808 79PL0089 CF KOHM 51 1/4W J T26 R810 79PL0077 CF KOHM 3.9 1/4W J T26 R811 79PL2060 RES.
  • Page 112 SYMBOL PART NO DESCRIPTION C040 79PL1944 ALU-UF-4.7-50V-F-105C-6.3 C041 79PL1944 ALU-UF-4.7-50V-F-105C-6.3 C042 79PL1407 C,ALU UF 680 25V NF 105C C043 79PL1407 C,ALU UF 680 25V NF 105C C044 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C301 79PL1943 ALU-UF-1000-10V-F-105-10X C302 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C303 79PL1417...
  • Page 113 SYMBOL PART NO DESCRIPTION C352 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C353 79PL1943 ALU-UF-1000-10V-F-105-10X C354 79PL2045 CAP. MC-PF-82-50V-J-NPO-S C356 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C357 79PL1319 MC 0.01UF 50V X7R M SMD C358 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C384 79PL1141 MC PF 100 50V NPO J SMD 0...
  • Page 114 SYMBOL PART NO DESCRIPTION C454 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C455 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C456 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C457 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C458 79PL1418 C,MC UF 0.1 25V Z Y5V SMD...
  • Page 115 REPLACEMENT PARTS LIST The components specified for Model LCD1550ME-BK(B) SYMBOL PART NO DESCRIPTION *** ICS *** I001 79PL1440 IC TDA7496L 20P PDIP SG I301 79PL1948 IC-M51953AFP-8P-SOP I302 79PL1951 IC-MTV312MV64-44P-PLCC-MY I303 79PL1950 IC-TTL-NC7SZ04M5X-5P-FAIR I304 79PL1447 IC 24LC32A 8P SOP MICROCH I305 79PL1949 IC-TTL-NC7SZ08M5X-5P-FAIR I306...
  • Page 116 SWITCH-TACT-TSAB-3-260GF- S606 79PL1975 SWITCH-TACT-TSAB-3-260GF- S607 79PL1975 SWITCH-TACT-TSAB-3-260GF- S608 79PL1975 SWITCH-TACT-TSAB-3-260GF- *** PWB ASSYS *** FUKEYB 79PL1819 FUNCTION KEY BD-NEC-FA150 HEPNBD 79PL1901 HEAD PHONE BD-NEC-FA15AA INTBD 79PL2044 INTERFACE BD INVA 79PL1982 INVERTER-DC-AC-AMBIT:T15I POWEBD 79PL2047 POWER BD *** COILS & FILTERS ***...
  • Page 117 SPEAKER 4P N13AA12PCH22 J V001 79PL2078 CABLE-VIDEO-DSUBX2-2000MM V002 79PL2036 HARNESS-FFC-45P(0.5)-95/1 V003 79PL2037 HARNESS-FFC-30P(0.5)-115/ V006 79PL2038 HARNESS--12P-330MM-CG150- V150 79PL2039 LCD-15-CLAA150XG01-CPT" X301 79PL1053 CRYSTAL 20MHZ HC-49/US *** APPEARANCE PARTS *** B0106 79PL2043 REAR COVER ASS'Y-NEC-NEC- B01U 79PL1844 COVER-CONNECTOR-NMV(NEC)- B02M 79PL1905 HINGE-L-NEC-NEC-FA150ATUA 8-12...
  • Page 118 79PL1833 COVER CABLE(LCD1550MBK B) B03M 79PL2040 BASE ASS'Y-NEC-NEC-FA15AA B03Q 79PL1875 BRACKET-STAND PLATE-NEC- B03R 79PL1869 FOOT RUBBER 79PL2042 FRONT COVER ASS'Y-NEC-NEC *** PRINTED & PACKING MATERIALS *** B0102 79PL2077 LABEL-MODEL LABEL-NMV-155 79PL2075 CARTON-NMV--NEC-FA15AA(9) 79PL1881 CUSHION-FOAM-EPS-LCD1550M 79PL1841 PLASTIC BAG 79PL1102 PLASTIC BAG...
  • Page 119 SYMBOL PART NO DESCRIPTION R317 79PL1004 CHIP-R 470H 1/8W J 805 R318 79PL1004 CHIP-R 470H 1/8W J 805 R319 79PL1296 CHIP-R KOHM 10 1/10W J 06 R320 79PL1302 CHIP-R KOHM 4.7 1/10W J R321 79PL1302 CHIP-R KOHM 4.7 1/10W J R322 79PL1302 CHIP-R KOHM 4.7 1/10W J...
  • Page 120 SYMBOL PART NO DESCRIPTION R803 79PL2059 RES. MOF-KOHM-100-2W-J-HO R805 79PL2059 RES. MOF-KOHM-100-2W-J-HO R806 79PL0741 MOF KOHM 33 3W J HOR R807 79PL0086 CF OHM 4.7 1/4W J T26 R808 79PL0089 CF KOHM 51 1/4W J T26 R810 79PL0077 CF KOHM 3.9 1/4W J T26 R811 79PL2060 RES.
  • Page 121 SYMBOL PART NO DESCRIPTION C040 79PL1944 ALU-UF-4.7-50V-F-105C-6.3 C041 79PL1944 ALU-UF-4.7-50V-F-105C-6.3 C042 79PL1407 C,ALU UF 680 25V NF 105C C043 79PL1407 C,ALU UF 680 25V NF 105C C044 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C301 79PL1943 ALU-UF-1000-10V-F-105-10X C302 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C303 79PL1417...
  • Page 122 SYMBOL PART NO DESCRIPTION C352 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C353 79PL1943 ALU-UF-1000-10V-F-105-10X C354 79PL2045 CAP. MC-PF-82-50V-J-NPO-S C356 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C357 79PL1319 MC 0.01UF 50V X7R M SMD C358 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C384 79PL1141 MC PF 100 50V NPO J SMD 0...
  • Page 123 SYMBOL PART NO DESCRIPTION C454 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C455 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C456 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C457 79PL1418 C,MC UF 0.1 25V Z Y5V SMD C458 79PL1418 C,MC UF 0.1 25V Z Y5V SMD...

  • Page 124: Block Diagram

    BLOCK DIAGRAM (LCD1550ME) PANEL INVERTER P307 P306 DC-DC POWER CIRCUIT PANEL DATA OUTPUT FUNCTION KEY-PAD DC15V RC FILTER DC 5V I310 SCALER RLC Regulator DC 3.3V CLOCK FILTER 5V TO 3V EXTERNAL I306 SCALER ISP-RS232 BOARD I308 EDID ESD PORTECTION SPEAKER CIRCUIT I302...
  • Page 125 SCHEMATIC DIAGRAM INTERFACE PWB (1/5) (MICROCONTROLLER/KEY FUNCTION) FB333 R364 R365 R366 HREF HREF VDD2 VREF OSD_VS VREF VDD1 C462 C463 C459 OSD-CLK OSD-CLK VSS2 DATA0 DATA1 R367 VSS1 DATA2 HTONE C301 1000uF/10V FBKG R362 R363 0.1uF 3,4,5 C302 I301 C460 C461 I311 Reset Time 13.67 ms@ DCV 4.76...
  • Page 126 SCHEMATIC DIAGRAM INTERFACE PWB (2/5) (VGA INTERFACE/CLOCK RECOVERY) I306B DVDD SVDD 2,4,5 DVDD DVDD SVDD SVDD 2,4,5 DAC_DGNDA DAC_SVDDA FB301 DAC_DGNDA DAC_DGNDA DAC_SVDDA DAC_SVDDA 5 R328 DAC_DVDDA DAC_SGNDA WB201209B401QNT DAC_SGNDA 4,5 DAC_DVDDA DAC_DVDDA DAC_SGNDA VGA_VSYNC PLL_DVDDA PLL_RVDDA PLL_RVDDA 5 PLL_DVDDA PLL_DVDDA PLL_RVDDA PLL_RGNDA...
  • Page 127 SCHEMATIC DIAGRAM INTERFACE PWB (3/5) (PANEL INTERFACE) FB309 Bridge Panel Interface 2,3,5 WB201209B300QST CPT 680mA FB310 C352 0.1uF Panasonic 600mA 2,3,5 CVDD0 3.3V LG 800mA CVDD0 C353 1000uF/10V C464 R348 0.47uF 3.3K Q303 VCC-P R371 FB311 FB312 SI2305DS VCC-P 5 Inrush Current 8.94 A FCM1608C-301T01 FCM1608C-301T01...
  • Page 128 SCHEMATIC DIAGRAM INTERFACE PWB (4/5) (POWER SUPPLY) Q305 2SA1037AK R353 100K R359 I309A R354 R355 R360 LM358 100K 100K BRI 2 C411 0.1uF I309B C412 R356 C413 C414 LM358 220uF/10V 10nF 0.1uF C415 C416 VCC-P R361 3.3K 0.1uF 0.1uF INV_EN 2 VCC-P 4 P301 Q306...
  • Page 129 SCHEMATIC DIAGRAM INTERFACE PWB (5/5) (AUDIO) L001 +12V 45uH DRWW 10 x 10 C002 +12V 100nF R055 Q310 2SA1037 R053 R056 C008 100nF 150K R054 150K MUTE R047 Q311 MUTE SST3904 PWR_OFF PWR_OFF 470uF/25V 105C + C003 C004 P003 100nF SP_L+ C007 100nF...
  • Page 130 SCHEMATIC DIAGRAM POWER PWB (1/1) 10-6...
  • Page 131 SCHEMATIC DIAGRAM INVERTER PWB (1/1) 5VDC EEL19 9:9:3:1450 Q/SI3457DV 100/1206 SM08 200K/0603 100uH/MLD10F ICP-S1.8 450mH 510/0603 100/1206 47uF/35V LS4148 B240/SMB 3904/SOT-23 10K/0603 0.22uF/160V BAV99 680/1206 100/1206 2K/0805 102J/0805 ON/OFF 30K/0805 JST S6B-PH-SM3-TB Q/2SD1802T Q/2SD1802T 3906/SOT-23 SM08 5VDC 5VDC ON/OFF 510/0603 NC/0603 470/0805 221K/0603...

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