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NEC AccuSync LCD72VM User Manual

NEC AccuSync LCD72VM User Manual

Accusync series
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SERVICE MANUAL

This model has one type of LCD panel.
The LCD panel manufactured by Quanta (QDI): Brightness is 250cd/m
The classification code of the serial number is [0, 1]: QDI Panel (Luminosity is 250cd/m
VERY IMPORTANT! Prior to servicing, confirm the classification code in the serial number of the unit.
For more details of the serial number, refer to "Serial Number Information".
NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION

COLOR MONITOR

AccuSync
MODEL ID
1st Edition
SEPTEMBER 2004
TM
LCD72VM
LCD72VM-BK (Q)
PART NO. 599910721
2
.
2
)
200410
08F14QAN
08F14QBN

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Summary of Contents for NEC AccuSync LCD72VM

  • Page 1: Service Manual

    The classification code of the serial number is [0, 1]: QDI Panel (Luminosity is 250cd/m VERY IMPORTANT! Prior to servicing, confirm the classification code in the serial number of the unit. For more details of the serial number, refer to “Serial Number Information”. 1st Edition NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION SEPTEMBER 2004 200410 08F14QAN...
  • 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 PACKING SPECIFICATION ..............11-1 REVISION HISTORY .................12-1...
  • Page 4 AccuSync LCD52VM/LCD72VM/LCD92VM...
  • Page 5 Index Warning ........................1 Contents ......................... 2 Quick Start ......................3 Controls ........................7 Recommended Use ....................10 Specifications ....................... 12 Features ........................ 15 Troubleshooting ....................16 References ......................17 Limited Warranty ....................18 TCO ‘99 ........................19 Avertissement ..................... 22 Contenu .........................
  • Page 6: Warning

    WARNING TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. ALSO, DO NOT USE THIS UNIT'S POLARIZED PLUG WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLETS UNLESS THE PRONGS CAN BE FULLY INSERTED. REFRAIN FROM OPENING THE CABINET AS THERE ARE HIGH VOLTAGE COMPONENTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
  • Page 7: User's Manual

    Contents Your new NEC AccuSync LCD monitor box* should contain the following: • AccuSync LCD Monitor • Video Signal Cable • Audio Cable • Power Cord • User’s Manua • Base Stand • Cable Holder Power Cord Video Signal Cable...
  • Page 8: Trouble Shooting

    15-pin mini D-SUB signal cable to the AccuSync Macintosh cable adapter (Figure A.2). Tighten all screws. NOTE: To obtain the AccuSync Macintosh cable adapter, call NEC-Mitsubishi Electronics Display of America, Inc. at (800) 632-4662. 3. Connect the 15-pin mini D-SUB of the video signal cable to the appropriate connector on the back of the monitor (Figure B.1).
  • Page 9 Quick Start –continued Note: Some Macintosh systems do not require a Macintosh Cable Adapter Macintosh Cable Figure A.1 Figure A.2 Adapter (not included) Audio input Power Cable Input (VGA) Figure B.1 Cable holder Figure C.1 Power button ASVMmanual070604.p65 7/7/04, 11:09 AM...
  • Page 10 Quick Start –continued Tilt Grasp both sides of the monitor screen with your hands and adjust the tilt as desired (Figure TS.1). Figure TS.1 NOTE: Handle with care when tilting the monitor screen. Remove Monitor Stand for Mounting To prepare the monitor for alternate mounting purposes: 1.
  • Page 11 Quick Start –continued Removing the Base Note: Always remove the Base when shipping the LCD. 1. Place monitor face down on a non-abrasive surface. 2. While using your thumbs, press the tabs in the direction of the arrows to unlock the stand. 3.
  • Page 12: Controls

    Controls ® (On-Screen Manager) control buttons on the front of the monitor function as follows: 1. Basic key function – Button SELECT AUTO / RESET Shortcut to bright Shortcut to volume OSM displayed “Auto adjust“ OSM Off adjust window adjust window function OSM On Moves to...
  • Page 13 Controls –continued AUDIO Control the sound volume of speakers and headphone. To mute the speaker sound, press the AUTO/RESET key. BRIGHTNESS Adjusts the overall image and background screen brightness. CONTRAST Adjusts the image brightness in relation to the background. AUTO CONTRAST Adjusts the image displayed for non-standard video inputs.
  • Page 14 Controls –continued EXIT Selecting EXIT allows you exit OSM menu/sub menu. LANGUAGE OSM control menus are available in seven languages. OSM TURN OFF The OSM control menu will stay on as long as it is in use. In the OSM Turn OFF submenu, you can select how long the monitor waits after the last touch of a button to shut off the OSM control menu.
  • Page 15: Recommended Use

    NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Display recommends using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.
  • Page 16 Recommended Use –continued CORRECT PLACEMENT AND ADJUSTMENT OF THE MONITOR CAN REDUCE EYE, SHOULDER AND NECK FATIGUE. CHECK THE FOLLOWING WHEN YOU POSITION THE MONITOR: • For optimum performance, allow 20 minutes for warm-up. • Adjust the monitor height so that the top of the screen is at or slightly below eye level.
  • Page 17: Power

    800 x 600* at 56 Hz to 75 Hz 832 x 624* at 75 Hz 1024 x 768 at 60 Hz to 75 Hz ....NEC-Mitsubishi Electronics Display cites recommended resolution at 75 Hz for optimal display performance. Horizontal : 304.1 mm/12.0 inches...
  • Page 18 1152 x 864* at 70 Hz 1152 x 870* at 75 Hz NEC-Mitsubishi Electronics Display cites 1280 x 960* at 60 Hz to 75 Hz recommended resolution at 60 Hz for 1280 x 1024 at 60 Hz to 75 Hz....optimal display performance.
  • Page 19 1152 x 864* at 70 Hz 1152 x 870* at 75 Hz NEC-Mitsubishi Electronics Display cites 1280 x 960* at 75 Hz recommended resolution at 60 Hz for 1280 x 1024 at 60 Hz to 75 Hz....optimal display performance.
  • Page 20: Features

    VESA standard 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. OSM Display Screen Copyright 2004 by NEC-Mitsubishi Electronics Display of America, Inc. ASVMmanual070604.p65 7/7/04, 11:10 AM...
  • Page 21: Troubleshooting

    For example, if an image was on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to erase the image. NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Display recommends using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.
  • Page 22: References

    References NEC-Mitsubishi Monitor Customer Service & Support Customer Service and Technical Support: (800) 632-4662 Fax: (800) 695-3044 Parts and Accessories/Macintosh Cable Adapter: (888) NEC-MITS [888-632-6487] Warranty Information: www.necmitsubishi.com/warranty Online Technical Support www.necmitsubishi.com/support Sales and Product Information Sales Information Line: (888) NEC-MITS [888-632-6487]...
  • Page 23: Limited Warranty

    Product may vary. Therefore, suitability of a Product for a specific purpose or application must be determined by consumer and is not warranted by NMD-A. For the name of your nearest authorized NEC-Mitsubishi Electronics Display service facility, contact NEC-Mitsubishi Electronics Display of America at 1-800-632-4662. ASVMmanual070604.p65...
  • Page 24: Why Do We Have Environmentally Labelled Computers

    TCO’99 Congratulations! You have just purchased a TCO’99 approved and labelled product! Your choice has provided you with a product developed for professional use. Your purchase has also contributed to reducing the burden on the environment and also to the further development of environmentally adapted electronics products.
  • Page 25 TCO’99 –continued accumulative* processes. Flame retardants have been found in human blood and researchers fear that disturbances in fetus development may occur. TCO’99 demand requires that plastic components weighing more than 25 grams must not contain flame retardants with organically bound chlorine and bromine. Flame retardants are allowed in the printed circuit boards since no substitutes are available.
  • Page 26 Declaration of the Manufacturer We hereby certify that the color monitor AccuSync LCD52VM (L154F0), AccuSync LCD72VM (L174F1), or AccuSync LCD92VM (L194F2) are in compliance with Council Directive 73/23/EEC: – EN 60950-1 Council Directive 89/336/EEC: – EN 55022 – EN 61000-3-2 –...
  • Page 27 NEC LCD Series PROPRIETARY NOTICE AND LIABILITY DISCLAIMER The information disclosed in this document, including all designs and related materials, is the valuable property of NEC- Mitsubishi Electronics Display of America and/or its licensors, as appropriate, reserve all patent, copyright and other proprietary rights to this document, including all design, manufacturing, reproduction, use and sales rights thereto, except to the extent said rights are expressly granted to others.
  • Page 28 AccuSync LCD52VM AccuSync LCD72VM AccuSync LCD92VM User’s Manual...
  • Page 29: Declaration Of The Manufacturer

    Therefore, it should be read carefully in order to avoid any problems. Caution: When operating the AccuSync LCD52VM/AccuSync LCD72VM/AccuSync LCD92VM with a 220-240V AC power source in Europe, use the power cord provided with the monitor. In the UK, a BS approved power cord with a moulded plug has a Black (five Amps) fuse installed for use with this equipment.
  • Page 30: 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. 60950-1. FCC Information Use the attached specified cables with the AccuSync LCD52VM/AccuSync LCD72VM/AccuSync LCD92VM colour monitor so as not to interfere with radio and television reception.
  • Page 31 Contents Your new NEC AccuSync LCD monitor box* should contain the following: • AccuSync LCD monitor with tilt base • Audio Cable • Power Cord • Video Signal Cable • User’s Manual • CD-ROM • Base Stand • Cable Holder...
  • Page 32: Remove Monitor Stand For Mounting

    3. Connect the 15-pin mini D-SUB of the video signal cable and Audio Cable to the appropriate connector on the back of the monitor (Figure B.1). Connect the Headphone (not included) to the appropriate connector at the front of the monitor (Figure C.1).
  • Page 33 Non-abrasive surface Figure R.1 Figure R.2 Figure R.3 Removing the Base NOTE: Always remove the Base when shipping the LCD. 1. Place monitor face down on a non-abrasive surface (Figure R.1). 2. While using your thumbs, press the bottom tabs upward to unlock. 3.
  • Page 34 Controls OSM (On-Screen Manager) control buttons on the front of the monitor function as follows: 1. Basic function at pressing each key – SELECT AUTO / RESET Button At No OSD Shortcut to Bright adjust Shortcut to Volume adjust “Auto adjust” operate. Showing OSM.
  • Page 35: Auto Adjust

    AUDIO Audio volume icon is chosen, depending on the volume condition (AUTO/RESET). BRIGHTNESS Adjusts the overall image and background screen brightness. CONTRAST Adjusts the image brightness in relation to the background. AUTO CONTRAST Adjusts the image displayed for non-standard video inputs. AUTO ADJUST Automatically adjusts the Image Position, the H.
  • Page 36: Monitor Info

    OSM LOCK OUT This control completely locks out access to all OSM control functions without Brightness and Contrast. When attempting to activate OSM controls while in the Lock Out mode, a screen will appear indicating the OSM are locked out. To activate the OSM Lock Out function, press “AUTO/ RESET”, then “+” key and hold down simultaneously.
  • Page 37 NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Display-Europe recommends using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.
  • Page 38 CORRECT PLACEMENT AND ADJUSTMENT OF THE MONITOR CAN REDUCE EYE, SHOULDER AND NECK FATIGUE. CHECK THE FOLLOWING WHEN YOU POSITION THE MONITOR: • For optimum performance, allow 20 minutes for warm-up. • Adjust the monitor height so that the top of the screen is at or slightly below eye level. Your eyes should look slightly downward when viewing the middle of the screen.
  • Page 39 @ 60 Hz to 75 Hz modes listed. 800 x 600* @ 56 Hz to 75 Hz NEC-Mitsubishi Electronics Display cites 832 x 624* @ 75 Hz recommended resolution at 75 Hz for 1024 x 768 @ 60 Hz to 75 Hz..... optimal display performance.
  • Page 40 Specifications AccuSync LCD72VM Monitor Monitor Specifications AccuSync LCD72VM Monitor Notes LCD Module Diagonal: 43 cm/17 inches Active matrix; thin film transistor (TFT) Viewable Image Size: 43 cm/17 inches liquid crystal display (LCD); 0.264 mm dot Native Resolution (Pixel Count): 1280 x 1024 pitch;...
  • Page 41 1152 x 864* @ 70 Hz 1152 x 870* @ 75 Hz NEC-Mitsubishi Electronics Display cites 1280 x 960* @ 75 Hz recommended resolution at 60 Hz for 1280 x 1024 @ 60 Hz to 75 Hz....optimal display performance.
  • Page 42 Features Reduced Footprint: Provides the ideal solution for environments requiring superior image quality but with size and weight limitations. The small footprint and low weight allow it to be moved or transported easily from one location to another. AccuColor Control Systems: Allows you to adjust the colours on your screen and customize the colour accuracy of your monitor to a variety of standards.
  • Page 43 NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Displays recommends using a screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use. Image is unstable, unfocused or swimming is apparent •...
  • Page 44 TCO’99 Congratulations! You have just purchased a Lead** TCO’99 approved and labelled product! Your Lead can be found in picture tubes, display screens, solders and choice has provided you with a product developed capacitors. Lead damages the nervous system and in higher for professional use.
  • Page 45: Serial Number Information

    Serial Number Information Refer to the serial number information shown below. EX.) SERIAL NUMBER LABEL Model Name: ASLCD72VM QDI Panel ASLCD72VM-BK (Q) SERIAL NO.: g g g g g g g g g g Manufactured Year : (Last digit: 2002→2, 2003→3, 2004→4) Manufactured Month : January to September: 1 to 9...
  • Page 46: Disassembly

    DISASSEMBLY g Before you disassemble the set, turn off power and pull out the power plug. g Use the proper screwdriver. If oversize or undersize screwdriver is used, screws may be damaged. g Assembly is the opposite process of disassembly. For U.S./Europe CABINET SYMBOL...
  • Page 47 For U.S./Europe CABINET SYMBOL DESCRIPTION (TPV Part Number) COLOR M1L330-6-47 SCREW (M3*6) Black Q1L330-10-47 SCREW (T3*10) Black REAR COVER Black 34L1438 NA 1T 34L1438 PL 1T REAR COVER Black INJECT COVER Black 33L4778 NA T INJECT COVER Black 33L4778 PL T...
  • Page 48 For U.S./Europe SYMBOL DESCRIPTION CABINET COLOR (TPV Part Number) 2L6008-1 SCREW ---- Q1L330-8-120 SCREW (T3*8) ---- For U.S./Europe SYMBOL DESCRIPTION CABINET COLOR (TPV Part Number) 34L1437-ANA-1T FRONT PANEL Black 34L1437-AGN 1T FRONT PANEL Black 33L4777 NA T BUTTON FUNCTION Black 33L4777 GN T BUTTON FUNCTION Black...
  • Page 49: Audio Board

    For U.S./Europe SYMBOL DESCRIPTION CABINET COLOR (TPV Part Number) 85L682-1 SHIELD 15L8097-1 MAIN FRAME M1L330-4-128 SCREW (M3*4) KEPC780KDM KEYBOARD Black (QDI Panel) For U.S./Europe SYMBOL DESCRIPTION (TPV Part Number) CBPC780KQLNV MAIN BOARD PWPC1742QDN1 POWER BOARD AUPCK780B5 AUDIO BOARD...
  • Page 50 For U.S./Europe SYMBOL DESCRIPTION (TPV Part Number) M1L1730-6-128 SCREW (M3*6) M1L1740-6-128 SCREW (M4*6) M1L1730-6-128 SCREW (M3*6) M1L1130-6-128 SCREW (M3*6) 78L 322501 L SPEAKER(LEFT) 78L 322501 R SPEAKER(RIGHT) Q1L1030 10128 SCREW Left Right...
  • Page 51 For U.S./Europe SYMBOL DESCRIPTION (TPV Part Number) M1L330-4-128 SCREW (M3*4) 3A684063 LCD QD17EL0703 QDI (NMV Part Number) 95G8018 30543 LVDS LINE For EMI...
  • Page 52 Explode Drawing DESCRIPTION DESCRIPTION Key Board Power Board Key Pad Main Board Lens Audio Board Bezel Shield Speaker Rear Cover Panel Stand and Hinge Main Frame Base...
  • Page 53: Adjustment Procedures

    ADJUSTMENT PROCEDURES TABLE OF CONTENTS Page 1. Application ............................4-2 2. Default Setting ..........................4-2 3. Basic Operation ..........................4-2 4. General Adjustment......................... 4-4 4.1 User Mode ............................. 4-6 4.2 Factory Mode..........................4-30 5. Adjustment Mode Setting ......................4-35 6.Panel Brightness Check ......................... 4-36 7.
  • Page 54: Default Setting

    1. Application This adjustment specification should be applied to the LCD72VM / LCD72VM-BK. 2. Default Setting Item Condition Power Supply AC100V~240Vac Input Freq. 1280×1024@75Hz Volume Mute Brightness 100% Contrast Color Temp. USER (R: 100%, G: 100%, B: 100%) OSM Time Off 45 sec.
  • Page 55 Control Buttons Basic function at pressing each key  Select Auto / Reset At No OSD Showing OSD Shortcut to Shortcut to “Auto adjust” showing Bright adjust Volume adjust operate window. window. At OSD showing Go to Cursor goes to left . Cursor goes to No operate for other ( Icon selection...
  • Page 56: General Adjustment

    4.General Adjustment OSM Control All functions are controllable by OSM using four buttons on the front bezel (excluding power button). Main menu (Icon select) Cursor : Green Icon select area (active area) Special Icon FH / FV Volume & Color Resolution Volume Normal...
  • Page 57 Sub Menu (Icon Select) Sub menu Title Cursor : Green Icon select area (active area) URL display URL display WWW.NECMITSUBISHI.COM For North America, Europe Sub Menu (Adjust) No active area Cursor : Yellow Cursor / bar: Item name green Bar / select text...
  • Page 58 4.1 USER Mode Volume Control the sound volume of speakers and headphone. Icon select Audio adjust 1. During volume function operate, volume Icon and slide bar color is changed from Normal condition. 2. " + “ Turn the volume up 3.
  • Page 59 Brightness Adjust the background screen brightness by using backlight inverter. Control range (BAR): 0.0% to 100.0% Factory setting: 100% Actual brightness control range: 30% to 100% 30% = (Brightness value [cd/m^2] when user controls Brightness Max) x 0.3 Brightness (Icon select) Brightness (Adjust) 1.
  • Page 60 Contrast BAR=100.0% Adjust the image contrast by controlling input signal. (Digital Gain 100%) BAR=50.0% Control range: (BAR): 0.0% to 100.0% Output (Digital Gain 50%) Factory setting: 50% BAR=0% (Digital Gain Input B is around 205/255. It means about 4/16 gray will be white. 1/16 4/16 13/16...
  • Page 61 AUTO (Contrast) Adjust the CONTRAST to the optimal value for the video-input level automatically. For example, when the amplitude of video input was larger/smaller than 0.7Vp-p, the value of contrast was automatically adjusted to the value, which will be in the same display condition as the video-input level was 0.7Vp-p. All other OSM operations shall be canceled in this adjustment term (probably during several seconds).
  • Page 62 AUTO (Geometry) Adjust the H.POSITION, V.POSITION, H-SIZE and FINE to the optimal value automatically. All other OSD operations shall be canceled in this adjustment term (probably during several seconds). Auto adjust (Icon select) Auto adjust (adjust) During AUTO function operate, AUTO Icon and slide bar color is changed from Normal condition. Auto Adjust (Proceeding) Operate “Auto Adjust”...
  • Page 63 H. Position Adjust the horizontal image position. Indicator Value and Bar of minimum position should be 0.0% Indicator Value and Bar of maximum position should be 100.0% Factory setting: Optimal value for the signals which is stated in the VESA standard.. Left/Right (H.Posi) (Icon select) Left/Right (H.Posi) (adjust) During H.Posi function operate, H.
  • Page 64 V. Position Adjust the horizontal image position. Indicator Value and Bar of minimum position should be 0.0% Indicator Value and Bar of maximum position should be 100.0% Factory setting: Optimal value for the signals which is stated in the VESA standard. Down/Up (V.Posi) (Icon select) Down/Up (V.Posi) (adjust) During V.Posi function operate, V.
  • Page 65 H. Size Adjust the frequency of internal pixel clock. When increasing the value, the width of display image become wider, and when decreasing the value, the width becomes narrower. (Step 1pixel-clock .odd numbered, even numbered steps) Indicator Value and Bar of minimum position should be 0.0% Indicator Value and Bar of maximum position should be 100.0% Factory setting: Optimal value for the signals, which is stated in the VESA standard.
  • Page 66 Fine Adjust the delay of internal clock to control the display focus. Indicator Value and Bar of minimum position should be 0.0% Indicator Value and Bar of maximum position should be 100.0% Factory setting: “0” Fine (Phase) (Icon select) Fine (Phase) (adjust) 1.
  • Page 67 Color Selecting three preset color (9300, 7500, 6500) and one user customize. 9300, 7500 and 6500 can’t change RGB value in User Mode But, If open RGB menu when Selecting 9300, 7500 or 6500 then display each RGB color value (Don’t change User value when only display) If change RGB menu when Selecting 9300, 7500 or 6500 then over write User value from each preset color value.
  • Page 68 7500 Color select (Icon select) Color select (adjust) During Color select function operate, Color select Icon and slide bar color is changed from Normal condition. Color select (Reset) Reset: Color select / User R, G, B 6500 Color select (Icon select) Color select (adjust) During Color select function operate, Color select Icon and slide bar color is changed from Normal condition.
  • Page 69 Color select (adjust) Color select (Reset) During USER function operate, USER Icon and slide bar color is changed from Normal condition. Reset: Color select / User R, G, B 4-17...
  • Page 70 RGB Adjust Adjust 3 colors (Red, Green, Blue) independently. Control range (BAR): 0% to 100% (each color) Default Setting: 100% Color Red(Icon select) Color Red (adjust) 1. During Color Red function operate, Color Red Icon and slide bar color is changed from Normal condition.
  • Page 71 Color Red (Icon select) Reset: Color select / User R, G, B Color Blue (Icon select) Color Blue (adjust) 1. During Color Blue function operate, Color Blue Icon and slide bar color is changed from Normal condition. 2. “-”Value decrease (Blue gain decrease) 3.”+”...
  • Page 72 Factory Reset and OSD Close Reset all user settings to factory preset value except language selection. Factory Preset (Icon select) Factory Preset (adjust) During Color Blue function operate, Color Blue Icon and slide bar color is changed from Normal condition. Factory Preset (confirmation) Exit (OSD Close) Language...
  • Page 73 OSD Turn off Select OSD Menu turn off time. 10 - 120 seconds are available by 5 second step. Factory setting: 45 seconds. OSD Turn off (Icon select) OSD Turn off (adjust) 1. During OSD Turn off function operate, OSD Turn off Icon and slide bar color is changed from Normal condition.
  • Page 74 OSD Lock Out This function locks out all access to OSD controls except volume, brightness and contrast control. When attempting to activate OSD controls while in the lock out mode, simple OSD menu of volume, brightness and contrast will appear. To activate the OSD Lock Out function, enter to OSD LOCK OUT menu, then press “+”...
  • Page 75 Monitor Info. (Icon select) Monitor Info. (Information display) Reserve memory area for Model name and serial number Model name: 9 characters max. Serial number: 13 character max. Model name indication: NEC Brand model: LCD72VM /LCD72VM-BK Exit (sub menu close) 4-23...
  • Page 76 OSM Functions – Warnings NO SIGNAL Video Input: No Signal This function gives a warning when input signal is not active. After power on or when input signal become inactive, this warning will appear. No signal OSD shall be shown after around 0.5sec from decision of video mode.
  • Page 77 Out of Range Video Input: Out of Range This function gives warning about input resolution or refresh rate which the monitor cannot display. If video signal is not proper timing when monitor power on or input signal is changed. When an out of range condition is formed, it displays OSD of the out of range mode. Measured frequency is in the following case.
  • Page 78 OSD Function –Short cut Auto Adjust (Geometry) Auto Adjust (proceeding) 1. Operate “Auto Adjust” with showing this OSD. 2. This function is adjust the H.POSITION, V.POSITION, H-SIZE and FINE to the optimal value automatically. To call this function, press “AUTO/RESET” button.
  • Page 79 New Signal Detection Above SVGA? Wait 5 sec No set flag of NTAA User menu open? Auto Adjustment (NTAA) Clear NTAA flag User menu Auto Adjustment Left/Right position Does Auto Adjustment Up/Down position succeed? H.Size Fine Did it Adjustment? Clear NTAA flag 4-27...
  • Page 80 OSD Lockout Audio (Icon select) Audio (Adjust ) 1. During Audio function operate, Audio Icon and slide bar color is changed from Normal condition. 2. “-” Turn down the volume 3. "+” Turn the volume up Audio (Adjust: Mute) During mute function operate, Audio Icon and slide bar color is changed from Normal condition.
  • Page 81 Brightness (reset) Reset: Brightness value Contrast (Icon select) Contrast (adjust) 1. During Contrast function operate, Contrast Icon and slide bar color is changed from Normal condition. 2. “ - ” Value decrease (to dark) 3. “+ ” Value increase (to bright) Contrast (reset) Reset: Contrast value Exit (Close OSM)
  • Page 82 4.2 Factory Mode If there is specific key input, while displaying Display mode OSM, enter to the Factory menu. When “Reset” + “Minus” + “Plus” key or “Reset” + “Left” + “Right” key was input during displaying Display mode OSM, open Waning OSM shows below. Enter into OSD, select TOOL select Monitor Info...
  • Page 83 Factory Mode First Page Auto Level: Press this icon, Software will find out the Gain, offset, offset1 value automatically. Black Level: Digital Offset (setting by software) Offset1: Analog RGB offset1 (scalar internal DC bias calibration data, setting by software) Offset: Analog RGB offset (Signal DC bias calibration data, setting by software) Gain: Analog RGB gain (setting by software)
  • Page 84 OSD SELECT (Factory Mode Second Page) Select “OSM” or “OSD” for display. Select Enter and withdraw from the changing area. Value decrease Value Increase Auto/Reset No Operate OSM, Be careful the following menu: OSM turn off, OSM turn off reset, OSM lock out, OSM lock out submenu OSD, Be careful the following menu: OSD turn off, OSD turn off reset, OSD lock out, OSD lock out...
  • Page 85 GAMMA (Factory Mode Second Page) Select Gamma display Select Enter and withdraw from the changing area Value decrease Value Increase Auto/Reset No Operate Value : 0: Selected QDI Gamma table 1: Selected LPL Gamma table BURN IN mode (Factory Mode Second Page) Burn in Select Enter and withdraw from the changing...
  • Page 86 ADDR (Factory mode second page) ADDR Select Operate Factory preset function Value decrease Value Increase Auto/Reset No Operate To specify the access address of the register index of ZAN3. (for DEBUG ) WR (Factory mode second page) Select Operate Factory preset function Value decrease Value Increase Auto/Reset...
  • Page 87 5. Adjustment Mode Setting AUTO LEVEL 1) Enter an input signal of VESA (1280×1024 @75Hz) input signal all white. 2) Enter the factory mode according to “4.2 Factory and Service mode” 3) Pressing the (-) or (+) button, adjust the high light to [AUTO LEVEL]. When the SELECT button is pressed, adjustment of the bias and the gain is carried out.
  • Page 88 6.Panel Brightness Check 1) Enter the input signal of 1280×1024 @75Hz, in Full white pattern. 2) Proceed “Factory Preset” function of miscellaneous menu. 3) OSM setting “BRIGHTNESS” to Max. (100%) and “CONTRAST” to 100%. 4) Color temperature setting to “USER” (R: 100%, G: 100%, B: 100%). 5) Check the center luminance should ≥...
  • Page 89: Inspection

    INSPECTION TABLE OF CONTENTS Page 1. General Description ......................5-2 2. Electrical Characteristics ......................5-3 2.1 Power Supply ........................5-3 2.2 LCD without Acrylic Panel ....................5-4 2.2.1 For QDI Panel ......................5-4 2.3 Full Scan Capacity ......................5-5 2.4 85Hz Refresh Rate Support ....................5-5 2.5 White Color Temperature ....................5-5 2.6 Check Power Manage Function ..................5-6 3.
  • Page 90 1. General Description Product Specifications Panel QDI Panel: QD17EL07 REV.07 Pixel Pitch 0.264mm Resolution 1280x1024 dots (XGA) LCD Module Color 16.19 million colors (QDI Panel) Brightness 250cd/m (Typical) Contrast Ratio 400:1 (Typical) Horizontal CR>=10(*2) 125 degrees (-60 to 65 degrees) Viewing Angle Vertical CR>=10(*2)
  • Page 91 Power Supply AC100-120V / 220-240V, 50 / 60Hz Current Rating (0.7A @ 100 - 120V, 0.4A @ 220 - 240V) Operational Temp. 5 - 35°C Environment Humid. 10 - 80% Temp. -10 - 60°C Storage Environment Humid. 10 - 85% 374.0(W) x 383.6(H) x 196.0(D) mm Dimension Gross...
  • Page 92 Name Definition Live Neutral Frame GND 2.2 LCD without Acrylic Panel 2.2.1 For QDI Panel (QDI 17EL0707) Item Specifications Remarks LCD Module type 17.0” / 43.2 cm diagonal Display Type Active matrix thin-film-transistor (TFT) Display Mode TN, Normally White Resolution 1280(H) x 1024(V) Aspect ratio 4:3 Active Display Area...
  • Page 93 2.3 Full Scan Capacity In case the input video mode is not 1280 x 1024, the image area should be expanded to 1024x768 smoothly with the function of scaling engine. Standard resolution: 1280 x 1024 Expand method: Full expand mode with smoothing as follows Down scaling: Down scaling at over 1280 x 1024 mode Table 2.3 Picture Size (In Full-Screen mode)
  • Page 94 2.6 Check Power Manage Function Monitor should enter to power saving mode if the following condition occurs. Mode Horizontal Vertical Power Supply Input Timing Power Consumption 240Vac VESA 1024X768 (75Hz) Stand-by 240Vac VESA 1024X768 (75Hz) Suspend 240Vac VESA 1024X768 (75Hz) 240Vac VESA 1024X768 (75Hz) 3.
  • Page 95 Dot Defect (1) Definition a) Bright dot The sub-pixel can be seen when using the 5% ND-Filter. b) Scratches on the color filter (Bright dot count) Count: defect area > 1/4 dot No count: defect area < 1/4 dot (2) Bright dot (Acceptable) Green/Red/Blue dots: When the MODULE lights, dots appear bright in display at black picture.
  • Page 96: Safety Test

    4. Safety Test • Destination: All over the world • Applicable standards: UL/C-UL • Unit class: Class I units (the units protected against electric shocks by protective earthing, or those equipped with 3-core power cords) • Ratings: AC100 - 240V 50/60Hz 0.6A/0.3A 4.1 Input Current Measurements Under the measuring conditions specified below, an input current should be measured while the 50Hz input voltage is maintained at 220V AC (+0 to -5V).
  • Page 97 4.3 Dielectric Strength Test To confirm the freedom from insulation breakdown, testing should be carried out under the conditions specified below. 1) Measuring conditions Measuring instrument: Dielectric strength tester (The specified voltage should be maintained in the state that a current of 10mA is carried.) Testing point: Between the electrical circuit block and the exposed metallic block (D-SUB connector) Note: The electrical circuit block should mean the power input block (primary side).
  • Page 98 5. Inspection of PLUG & PLAY Communication and OSM "MONITOR INFORMATION" for Model Name / Serial Number 5.1 System Connection This system should be connected as shown below. DDC Communication I/F BOARD 5.2 Input Signal Horizontal synchronization frequency: Not specified. Vertical synchronization frequency: Not specified.
  • Page 99 5.4 Operation Connect the EDID data writing unit with jigs, etc. Copy all the files of the service tool Ver. W3.22 in a proper directory. Start [Service2.EXE] of the service tool Ver. W3.22 When the screen as shown below appears, check to [LCD] of [Monitor Type] and press the [START] button.
  • Page 100 When the screen as shown below appears, check to [EDID_READ] and press the [OK] button. When the screen as shown below appears, confirm that the correct data are displayed in the columns of EDID DATA CONTENTS and Serial information. If all the displayed data are [FF] or the like, or if the serial number is different from that of the corresponding unit, then EDID data writing should be carried out.
  • Page 101 9) When the screen as shown below appears, examine the serial number of the unit, enter an input in the column of [Input Serial No.] through the keyboard, and press the [Input OK] button. Enter an input in the column of [.Year=> ] in manufactured year(A.D. four digits) and [Month=>] in manufactured month through the keyboard, and press the [Input OK] button.
  • Page 102 10) When the [WRITE EDID] button is pressed, writing of the EDID data only is carried out. Upon the completion of correct writing, a display of [EDID Monitor Write OK] is presented in the column of [STATUS]. 11) Upon the normal completion of EDID data writing, press the [Exit] button to close the program. 5.5 EDID Data File content of DDC process EDID DATA FOR MultiSync LCD72VM...
  • Page 103 5.6 OSM "Monitor Information" for Model Name / Serial Number a). System Connection This system should be connected as shown below. ISP Board (Part No: 599910726) b). Input Signal Horizontal synchronization frequency: Not specified. Vertical synchronization frequency: Not specified. c). Preparation 1.
  • Page 104 e). Operation Steps S/N Record: 1. Connect the signal cable and S/N record. Select and run the right S/N record program, and the dialog box appear (shown as follows), and the options setting should accord with the figure shown as follow: (COM: COM1;...
  • Page 105 Attached 1: Barcode sample Model name Model name Sign: 1. Make sure the foreman or the charge should check the SN contents of the first set of each schedule OK and lock. 2. If the model name is unconformity with the fact code, please inform the MK and RD-LCD to affirm.
  • Page 106 7. Factory Preset Display Modes The following are the most frequently used of the preset operating modes: Horizontal Refresh Screen Mode frequency rate resolution Dos* 31.5kHz 70Hz 720x400 31.5kHz 60Hz 640x480 35.0kHz 67Hz 640x480 37.9kHz 73Hz 640x480 37.5kHz 75Hz 640x480 SVGA 35.1kHz 56Hz...
  • Page 107 8. Audio System 8.1 Audio Input Connector type: Φ3.5 stereo mini jack@ back side of monitor Color of Connector: Pantone284C (Light Blue) Input level: 500mVrms Input impedance: 47kΩ 8.2 Headphone Output Output power: 1.0 W rms/CH @ 1KHz Total harmonic distortion(@ 1W): <1% S/N ratio: 50db...
  • Page 108 8.5 Audio Control Following functions must be controlled by OSM. Volume Control Mute function Speaker Output Power at 1kHz, 500mVrms, volume max 1 + 0.5W Volume control characteristic is similar as gamma 2.2 curve. 8.6 Audio Test a. During Volume function operate, Volume Icon and slide bar color is changed from Normal condition. b.
  • Page 109 TROUBLE SHOOTING TABLE OF CONTENTS Page 1. No Display On Screen.......................... 6-2 2. Panel Power Circuit..........................6-3 3. U102-Data Output ..........................6-4 4. Keypad Board............................6-5 5. PWPC Board ............................6-6 5.1 No Power .............................. 6-6 5.2 No Backlight............................6-7...
  • Page 110 1. No Display On Screen Measured CN201 PIN 5/6= 12V? Check Correspondent component. Measured CN201 PIN 9/10= 5V? Is there any shortage or cold solder? Measured U102 PIN 50= 3.3V? Disconnected the Signal cable (Loose the Green Connected the Signal cable again, Signal cable), Is the screen show “Cable Not Check LED status.
  • Page 111 2. Panel Power Circuit Check R172 should have response from Check the PPWR panel power relative 0V to 5V When we switch the power switch circuit, Q104 In normal operation, from on to off when LED =green, R172 should =0V Measured the Q104 PIN 3 = 5V? Replace Q104...
  • Page 112 3. U102-Data Output Measured DCLK (PIN 57 from U102) DVS, DHS (PIN 54, 55 from U102) Is the waveform ok? DCLK around 48 MHZ, Replace ZAN3XL (U102) or DVS=60.09Hz, DHS around 80kHz? (Refer to input replace Main board. signal=640x480@60Hz, and LED is Green) Check ZAN3/XL (U102) If Main Board being replace, Signal output (PIN 5-14, 106-113, 17-26)
  • Page 113 4. Keypad Board OSD is unstable or not working Is Keypad Board connecting normally Connect Keypad Board Is Button Switch normally Replace Button Switch Is Keypad Board normally Replace Keypad Board Check Main Board...
  • Page 114 5. PWPC 5.1 No Power Check to CN102 PIN 12=12V Check Interface Board Check AC line volt 110V or 220V Check AC line Check the voltage of C905(+) Check F901, bridge rectified circuit Check start voltage for the PIN 3 of IC901 Check R906, R907, IC901 Check the auxiliary voltage Is between 10V-16V 1) Check IC901,...
  • Page 115 5.2 No Backlight Check CON102 PIN 12 =12V Check adapter Check ON/OFF signal Check Interface board Check IC201 PIN 5=5V+-0.25V Check Q201,Q202,ZD203 circuit Check IC201 PIN 3=5V Check Q201, Q202, ZD203 circuit Check IC201 PIN 18 triangular wave is normal Check R216, R217, C218, C220, IC201 circuit Check IC201 PIN 11, 12, 19, 20...
  • Page 116: Circuit Description

    CIRCUIT DESCRIPTION TABLE OF CONTENTS Page 1. General Description..........................7-2 2. Main Board ............................7-2 2.1 Description of Main Chips ......................7-2 2.2 MCU .............................. 7-2 2.3 GMZAN3XL ........................... 7-2 2.4 DC to DC ............................7-3 2.5 Panel Control Circuit ........................7-4 2.6 On/Off /Brightness Control Circuit....................
  • Page 117: General Description

    1. General Description The LCD MONITOR contains a panel, a main board, an inverter/power board, audio board and keyboard. 2. Main Board The main board contains panel control logic, brightness control logic, DDC and DC convert DC circuit etc. 2.1 Description of Main Chips MCU: 8051 SCM, main function is power control, OSD control, frequency calculation, RS232 communication and etc.
  • Page 118 Pin name Describe RED+ Positive analog input for RED channel RED- Negative analog input for RED channel GREEN+ Positive analog input for GREEN channel GREEN- Negative analog input for GREEN channel BLUE+ Positive analog input for BLUE channel BLUE- Negative analog input for BLUE channel HSYNC ADC input horizontal sync VSYNC...
  • Page 119 2.4 DC to DC The required power supply is different for each chip, and the voltage of 12v, and 5v offered by PWPC can’t reach the requirement, so we deal with this problem by means of two pieces of DC TO DC chips(AIC1084, BS1834).
  • Page 120 2.6 On/Off /Brightness control circuit ON/OFF control: When engaged, the outputs are high level, and low in saving energy state. Brightness control: When engaged, the output PWM pulse from PIN 52 of U101 adjusts the brightness, the smaller the duty cycle, the higher the brightness. ON/OFF control Brightness control 3.
  • Page 121 Rectifier and filter circuit: The AC input is changed to a high DC voltage. The magnitude is a product of 1.414 to AC after it is converted by a bridge rectifier (BD901) and filtered by the capacitor (C905). Start-up circuit: After being converted and filtered, the high DC voltage travels through R906, R907 as they dissipate a portion of the voltage.
  • Page 123 Protection circuit: over-voltage protection: 1. The voltage output across terminals 5-6 of T901 increases when the voltage of electric net exceeds its maximum. When the output exceeds 20V, ZD901 will conduct , and voltage will be applied across R912. Q902 will turn on when the voltage across R911 reaches 0.6V, and the voltage of the Base of Q901 will be pulled down, Q901 gets through.
  • Page 124 Commute and filter output circuit: When PIN 8 of IC901 sends a high pulse, current passes through Q903 and produces a current in the primary coil of T901 (pin 1 +, pin 3 -). This produces a reverse electromotive force (EMF) in the secondary coil. Energy is stored in the secondary coil because D910, and D912 are closed.
  • Page 125 Circuit for steadying voltage: The rising of electric supply voltage can result in the increase of output voltage. This leads to the increase of the current that flows through photoelectric coupling unit. The brighter the light produced inside the photoelectric coupling unit, the more easily the current can get through the photosensitive side, due to it lower resistance.
  • Page 126: 3.2 Inverter

    3.2 Inverter Input interface section: 1. 12V DC input, , provided by power section; 2. ON/OFF enable signal, , provided by GMZAN3SL from the main board with value of 0Vor 3V. When OFF=0V, the inverter doesn’t work, while OFF=3V, it works under normal situation. 3.
  • Page 127 OZT1060: It is a unique, high-efficiency, Cold Cathode Fluorescent Lamp (CCFL) backlight inverter controller that is designed for wide input voltage inverter applications. Additionally, the 0Z1060 performs the lamp dimming function with an analog voltage or low frequency Pulse Width Modulation (PWM) control. The OZ1060 operates at a single, constant frequency in a phase-shift PWM mode.
  • Page 128 7-13...
  • Page 129 Protection circuit: Over-voltage protection: The rising of output voltage can result in the increase of D201, D203, D206 and D209 commute output voltage, and When OVP (PIN 2 of IC201) reaches the 2.0V threshold, PIN 1 (CTIMR) of IC201 charges the capacitor with a 3.0uA current. When CTIMR voltage reaches 3.0V, the IC201 shuts down (latch).
  • Page 130: Pwpc1742Qdn1

    Replacement Parts List (For U.S./Europe) Parts List for Models LCD72VM-BK (A) / LCD72VM-BK (B) For U.S/Europe Description Version Cabinet Color (TPV Part Number) AUPC780KB5 AUDIO BOARD CBPC780KQLNV CONVERSION BOARD KEPC780KDM KEY BOARD Black PWPC1742QDN1 POWER BOARD 11L6061 1 SPACER SUPPORT 12L6039500 RUBBER PAD 12L6039501...
  • Page 131 For U.S/Europe Description Version Cabinet Color (TPV Part Number) 1185 MIDDLE TAPE FOR CARTON 1186 SMALL TAPE 1207 A ALUMINIUM TAPE 1211519 ALUMINIUM TAPE 52L6025 11704 MYLAR 52L6025 11753 MYLAR 70G2000508NMV CD-ROM 85L 682 1 SHIELDING COVER 89L 173 56 27 AUDIO HARM:GOLD FULL Black 89L1738GAA16N...
  • Page 132 For U.S/Europe Description Version Cabinet Color (TPV Part Number) 78L 322501 L SPEAKER 78L 322501 R SPEAKER Q1L1030 10128 SCREW Q1L1040 10128 TAP 4X8 FOR SP...
  • Page 133 Replacement Parts List of Main Board CBPC780KQLNV (MAIN BOARD) For U.S./Europe Symbol Description (TPV Part Number) C122 67L215Y2207NV 105°C 22UF +-20% 50V C129 67L215Y2207NV 105°C 22UF +-20% 50V C136 67L215Y2207NV 105°C 22UF +-20% 50V C140 67L215Y2207NV 105°C 22UF +-20% 50V C143 67L215Y100 7N LOW ESREC 10UF 50V NCC...
  • Page 134 For U.S./Europe Symbol Description (TPV Part Number) C119 65L0603104 12 0.1UF +-10% 16V X7R C120 65L0603221 31 CAP:CER 220PF 5% 50V SM C121 65L0603221 31 CAP:CER 220PF 5% 50V SM C123 65L0603104 12 0.1UF +-10% 16V X7R C124 65L0603104 12 0.1UF +-10% 16V X7R C125 65L0603104 12...
  • Page 135 For U.S./Europe Symbol Description (TPV Part Number) C177 65L0603470 31 CHIP 47PF 50V NPO C180 65L0805105 22 CHIP 1UF 25V X7R 0805 C181 65L0603101 32 100PF +-10% 50V X7R C183 65L0603104 12 0.1UF +-10% 16V X7R C184 65L0603104 12 0.1UF +-10% 16V X7R D101 93L 6433P BAV99...
  • Page 136 For U.S./Europe Symbol Description (TPV Part Number) R101 61L0603100 0F CHIP 100OHM 1/10W 1% R102 61L0603470 CHIPR 47 OHM +-5% 1/10W R103 61L0603470 CHIPR 47 OHM +-5% 1/10W R104 61L0603100 0F CHIP 100OHM 1/10W 1% R105 61L0603100 0F CHIP 100OHM 1/10W 1% R106 61L0603750 9F 75OHM 1% 1/10W...
  • Page 137 For U.S./Europe Symbol Description (TPV Part Number) R152 61L0603101 CHIPR 100 OHM +-5% 1/10 R153 61L0603101 CHIPR 100 OHM +-5% 1/10 R154 61L0603102 CHIPR 1K OHM +-5% 1/10W R155 61L0603102 CHIPR 1K OHM +-5% 1/10W R157 61L0603221 CHIPR 220 OHM+-5% 1/10W R158 61L0603221 CHIPR 220 OHM+-5% 1/10W...
  • Page 138 For U.S./Europe Symbol Description (TPV Part Number) U502 56L 563 27 AIC1117A-18CY SOT-223 U503 56L 585 4 AIC1117-33CY 715L1350 1 GM...
  • Page 139 Replacement Parts List of Key Board KEPC780KDM/3 (KEY BOARD) For U.S./Europe Symbol Description Part No for TPV CN101 33L801712A H PIN HEADER 2*6 R/A CN102 88L 30221T PHONE JAC(DARK ROOF GRA CN103 33L3802 2H WAFER 2P RIGHT ANGLE CN104 33L3802 2H WAFER 2P RIGHT ANGLE DP101 81L 12 1A GP...
  • Page 140 Replacement Parts List of Power Board PWPC1742QDN ( POWER BOARD ) For U.S./Europe Symbol Description (TPV Part number) C201 67L215L102 3N 105°C 100UF +-20% 16 C204 65L 3J2206ET 22PF 5% 3KV TDK C205 65L 3J5096ET 5PF 5% SL 3KV C208 65L 3J2206ET 22PF 5% 3KV TDK C209...
  • Page 141 For U.S./Europe Symbol Description (TPV Part number) L904 73L 253 91 LS CHOKE BY LI SHIN NR901 61L 58050 WT NTC 5 OHM 5A PT201 80LL17T 23 DN XFMR PT202 80LL17T 23 DN XFMR R903 61L152M10458F 100K OHM 5% 2W R917 61L152M398 64 0.39 OHM 2W...
  • Page 142 For U.S./Europe Symbol Description (TPV Part number) C246 65L0805104 32 CHIP 0.1UF 50V X7R C247 65L0805104 32 CHIP 0.1UF 50V X7R C265 65L1206105 32 CHIP 1UF 50V X7R 1206 C266 65L1206105 32 CHIP 1UF 50V X7R 1206 C267 65L1206105 32 CHIP 1UF 50V X7R 1206 C268 65L1206105 32...
  • Page 143 For U.S./Europe Symbol Description (TPV Part number) Q212 57L 759 2 RK7002 SOT-23 Q213 57L 759 2 RK7002 SOT-23 Q214 57L 759 2 RK7002 SOT-23 Q215 57L 759 2 RK7002 SOT-23 R201 61L0805102 CHIPR 1K OHM +-5% 1/8W R202 61L1206150 CHIP 15 OHM 5% 1206 1/4 R203 61L0805103...
  • Page 144 For U.S./Europe Symbol Description (TPV Part number) R902 61L1206394 CHIPR 390KOHM+-5% 1/4W R906 61L1206105 CHIP 1MOHM 5% 1/4W R907 61L1206105 CHIP 1MOHM 5% 1/4W R908 61L1206519 CHIPR 510OHM +-5% 1/4W R909 61L1206472 CHIP 4.7KOHM 5% 1/4W R910 61L0805472 CHIRP 4.7K OHM +-5% 1/8 R911 61L0805472 CHIRP 4.7K OHM +-5% 1/8...
  • Page 145 For U.S./Europe Symbol Description (TPV Part number) R208 61L212Y625 KT 6.2M 3KV KAMAYA R221 61L 60233352T 33KOHM 1% 1/6W R224 61L212Y625 KT 6.2M 3KV KAMAYA R292 61L 60222052T CFR 22 OHM+-5% 1/6W R922 61L 21033352T 33K 1/6W 1% R923 61L 21036252T 3.6K 1/6W 1% T901 6L 31502...
  • Page 146 Replacement Parts List of Audio Board AUPC780KB5 ( AUDIO BOARD ) For U.S./Europe Symbol Description Part No for TPV CN202 33L802414C H 2*7PIN DUAL ROW RIGHT A CN204 33L3278 3 3P PLUG B3B-XHA/JST U201 56L 616 1 TDA7496L BY ST C203 65L0805104 32 CHIP 0.1UF 50V X7R...
  • Page 147: Block Diagram

    BLOCK DIAGRAM 1. THE MONITOR BLOCK DIAGRAM (MODEL: LCD72VM) Monitor Block Diagram CCFL Drive Flat Panel and CCFL Backlight RS232 Connector Power Board Main Board For white balance adjustment in (Include: adapter, inverter) factory mode Key Board Audio Board AC-IN 100V-240V HOST Computer Video Signal, DDC...
  • Page 148 2. SCALER BOARD BLOCK DIAGRAM (MODEL: LCD72VM) LCD Interface (LVDS) Scaler Gmzan3XL W78E65P-40 (Include ADC, OSD) Crystal 14.318MHz H-SYNC OSD Control V-SYNC EPR_SDA Interface EPR_SCL (Keypad) EEPROM Crystal D-Sub 24C16 Connector 14.318MHz DB15_SDA DB15_SCL EDID-EEPROM 24C02...
  • Page 149 3. POWER BOARD BLOCK DIAGRAM (MODEL: LCD72VM) AC Input Surge Diode rectifier DC to DC Rectification EMI FILTER to Scaler board Protection & Filter Converter Transformer Starting +3.3V Low drop Resistance to Scaler board Regulator Switching circuit PWM Feedback control control IC&...
  • Page 150 4. AUDIO BOARD BLOCK DIAGRAM (MODEL: LCD72VM) Line In (L/R) Audio Out (L/R) Audio Amplifier Speaker +12V ST TDA7496L...
  • Page 151 SCHEMATIC DIAGRAM TABLE OF CONTENTS Page MAIN BOARD --------------------------------------------------------------------------------------------------------------------------- 10-2 AUDIO BOARD ------------------------------------------------------------------------------------------------------------------------- 10-7 KEYPAD BOARD ----------------------------------------------------------------------------------------------------------------------- 10-8 POWER BOARD ----------------------------------------------------------------------------------------------------------------------- 10-9 10-1...
  • Page 152: Revision History

    MODEL LCD72VM SCHEMATIC DIAGRAM MAIN BOARD (TITLE PAGE) (1/9) REVISION HISTORY Date Author Comments 4/20/'04 SCAR Preliminary 5/12/'04 SCAR R128,R128,R145 BOM Change to NC CN601 BOM Change to 33L8017-14A-H R165 BOM Change to 1K ohm U501 Change From SOT-223 to TO-252 5/11 D104 Change from 5.6V to 6.2V 5/11 R130 Change from key-off to key-Left...
  • Page 153 MODEL LCD72VM SCHEMATIC DIAGRAM MAIN BOARD (ANALOG INPUT) (2/9) 1/16W   DB-RXD R102 RXD 2 2.7K 1/16W   C102 D102 R177 56pF DB-TXD R103   1/16W C103 D103 R178 2.7K   1/16W 56pF FB101 1/16W R101 1/16W C104 0.047uF    ...
  • Page 154 MODEL LCD72VM SCHEMATIC DIAGRAM MAIN BOARD (SCALER AND MUC) (3/9) +3.3V_VDD 3.3V_DVDD +1.8V_VDD 1.8V_DVDD 56.95mA 114mA L101 C123 C124 C125 C126 C127 C128 L102 C130 C131 C132 C133 C134 C135 120 OHM 120 OHM C129 C122 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 22uF...
  • Page 155 MODEL LCD72VM SCHEMATIC DIAGRAM MAIN BOARD (POWER) (4/9) CN501 C182 C183 +12V 47uF/25V 0.1uF/16V CONN CN201 ON_OFF R162 4.7K   1/16W PBIAS VCC12V VCC12V VCC5V VCC5V 1.435A CON402(PITCH 2.00) R163 TO-263 For 15" C162 C161 C163 C164 TO223 For 17" 19" 0.1uF/16V 220uF/25V 0.1uF/16V...
  • Page 156 MODEL LCD72VM SCHEMATIC DIAGRAM MAIN BOARD (PANEL INTERFACE) (5/9) LVDS_O[0..9] LVDS_O0 LVDS_O1 CN503 LVDS_O2 LVDS_O3 LVDS_O0 RXO0- RXO0+ LVDS_O1 LVDS_O4 LVDS_O2 RXO1- RXO1+ LVDS_O3 LVDS_O5 LVDS_O4 RXO2- RXO2+ LVDS_O5 LVDS_O6 LVDS_O6 RXOC- RXOC+ LVDS_O7 LVDS_O7 LVDS_O8 RXO3- RXO3+ LVDS_O9 LVDS_O8 LVDS_E0 RXE0- RXE0+...
  • Page 157 MODEL LCD72VM SCHEMATIC DIAGRAM AUDIO BAORD (6/9) OUT_L OUT_R +12V CN202 MUTE VOLUME C202 C201 C203 470uF/16V 470uF/16V 0.1uF U201 TDA7496L CN204 C205 CN203 C204 0.47uF R201 10K  OUTL 470uF/16V C206 OUTR R203 10K  0.47uF R212 C207 VOLUME 33L8022-3A-H FEMALE 470uF/16V 220K ...
  • Page 158 MODEL LCD72VM SCHEMATIC DIAGRAM KEYPAD BAORD (7/9) +12V 600 OHM FB105 R189 CN601 1/16W FB106 120 OHM(NC)   STANDBY AUDIO_STDBY R187 4.7K 1/16W R150 1/16W     AUDIO_MUTE MUTE R181   1/16W SPKR_L+ SPKR_R+ R184 VOLUME LINE-IN-L LINE-IN-R C178 C151  ...
  • Page 159 MODEL LCD72VM SCHEMATIC DIAGRAM POWER BAORD (INVERTER) (8/9) C201 1000uF/25V +12V CN201 C260 R201 0805 R244 Q204 P3503QVG C203 JUMPER   1206 ZD202 2.2uF/1206   Q205 5.6V ZD201 C202 DTA144WKA R203 5.6V 104/0805 C204 C205   0805 R204 C206 10pF/3KV 10pF/3KV  ...
  • Page 160 MODEL LCD72VM SCHEMATIC DIAGRAM POWER BAORD (PWPC1742QDN1) (9/9) R920 C920   1/2W 0.001uF/500V D910 10A/150V L903 F902 +12V DB901 + C922 C926   1/8W 2KBP06M R906 R904 C911 R903 1000uF/16V C924 0.1uF/0805   1/8W NC 1206 1500P/1KV 100K   R921 1000uF/16V ZD904 C905...
  • Page 161: Packing Specification

    Packing Specification A Version B Version Set Up Sheet This page printed in English Set Up Sheet Out side is English Ver For U.S/Europe Item Description Cabinet Color (TPV Part Number) SETUP SHEET 41L780084232A Black SETUP SHEET 41L780084248A Black 11-1...
  • Page 162 Power cord*1 (10) Manual & card Base Cable hook*1 Audio cable*1 Signal cable*1 (12) (11) B Ver Only (13) Add tape (Don’t cover the contents of the Caution Sheet. Put Caution sheet on cushion like above drawing. (Fold by 2 pcs (Letter is out)) 11-2...
  • Page 163 For U.S./Europe Item Description Cabinet Color (TPV Part Number) PE BAG for clamp 45L 76 28 V6 CLAMP 33L4695 1 C PE BAG FOR MAUUAL 45L 76 28 V9 Sheet, Protection 41L780084222A ---- FLYER NAVISET 41L780084225A MANUAL 41L780084221B MANUAL 41L780084234A CD ROM 70G2000508NMV OFFICE LIST...
  • Page 164 REVISION HISTORY Revision Revision New Issue (1st Edition) 2004/10/20 12-1...
  • Page 165: Schematic Diagrams

    PRINTING THE ELECTRONIC DOCUMENT The PDF of this service manual is not designed to be printed from cover to cover. The pages vary in size, and must therefore be printed in sections based on page dimensions. NON-SCHEMATIC PAGES Data that does NOT INCLUDE schematic diagrams are formatted to 8.5 x 11 inches and can be printed on standard letter-size and/or A4-sized paper. SCHEMATIC DIAGRAMS The schematic diagram pages are provided in two ways, full size and tiled.

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