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Mitsubishi Diamond Plus 93SB Service Manual
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Mitsubishi Diamond Plus 93SB Service Manual

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PART NO. 599910598

SERVICE MANUAL

Diamond Plus 93SB
COLOR MONITOR
MODEL DPlus 93SB (B)
NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION
JUNE 2002
200207
08109716

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  • Page 1: Service Manual

    PART NO. 599910598 SERVICE MANUAL Diamond Plus 93SB COLOR MONITOR MODEL DPlus 93SB (B) NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION JUNE 2002 200207 08109716...
  • 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 associated with high voltage CRT circuit designs to minimize danger to themselves and their coworkers. To avoid electrical shocks, this equipment should be used with an appropriate power code and be connected only to a properly grounded AC outlet.
  • Page 3 PRODUCT SAFETY CAUTION 1. When parts replacement is required for servicing, always use the manufacturer's specified replacement. 2. Comply with all caution and safety-related notes on the product display chassis and picture tube. 3. When replacing the component, always be certain that all the components are put back in the place. 4.

  • Page 4: 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 DIAGRAMS ....................9-1 SCHEMATIC DIAGRAMS ..................10-1...
  • Page 5 User's Manual 1. B Version User’s Manual...

  • Page 6: Declaration Of The Manufacturer

    686-1, Nishioi Oi-Machi Ashigarakami-gun Kanagawa 258-8533, Japan Product NERGY As an E Partner, NEC-Mitsubishi Electronics Display of America, Inc. has determined that this NERGY product meets the E guidelines for energy efficiency. The E emblem does not represent NERGY NERGY EPA endorsement of any product or service.
  • Page 7 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. EFRAIN FROM OPENING THE CABINET AS THERE ARE HIGH VOLTAGE COMPONENTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
  • Page 8 Contents Your new Diamond Pro 750 / Diamond Plus 93 monitor box* should contain the following: • Diamond Pro 750 / Diamond Plus 93 Monitor with tilt/swivel base • Power Cord • Captive Signal Cable • User’s Manual • CD ROM with Setup Software, complete User’s Manual and other helpful files. To see the User’s Manual, Acrobat Reader 4.0 must be installed on your PC.

  • Page 9: Quick Start

    Quick Start To attach the Diamond Pro 750 / Diamond Plus 93 monitor to your system, follow these instructions: 1. Turn off the power to your computer. 2. If necessary, install the display card into your system. For more information, refer to the display card manual.
  • Page 10 Quick Start – continued Power Outlet Power Cord Figure C.1 Power Button Figure D.1 6 User’s Manual...

  • Page 11: Size And Position Controls

    Controls OSM (On-Screen Manager) control buttons on the front of the monitor function as follows: s t i s t i g i l g i l f e l r / t f e l r / t . s l –...

  • Page 12: Geometry Controls

    Controls – continued Color Control System Colour presets selects the desired colour setting. The bar is replaced by the colour setting choice. Each colour setting is adjusted at the factory to the stated Kelvin. If a setting is adjusted, the name of the setting will change from Kelvin to Custom except sRGB mode.
  • Page 13 Controls – continued Tools 2 Language: OSM controls menus are available in 6 languages. OSM Position: You can choose where you would like the OSM controls menu to appear on your screen. Selecting OSM Position allows you to manually adjust the OSM controls menu position from among Center, Top left, Top right, Bottom left and Bottom right.

  • Page 14: Recommended Use

    Recommended Use Safety Precautions and Maintenance FOR OPTIMUM PERFORMANCE, PLEASE NOTE THE FOLLOWING WHEN SETTING UP AND USING THE DIAMOND PRO 750 / DIAMOND PLUS 93 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 15 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: • Adjust the monitor height so that the top of the screen is at or slightly below eye level.

  • Page 16: Specifications

    Specifications : l a ° 0 e l f e l l c t i e l l - i t l - i t c i t t n i i t i i t a c i t i t i i t a i t i...
  • Page 17 Specifications – continued : l a ° 0 e l f e l l c t i e l l - i t l i t n c i t t n i i t i i t a c i t i t i i t a i t i...
  • Page 18 The state-of-the-art Mitsubishi PX-DBF electron gun and tight 0.25 mm grille pitch delivers precise focus for crisp, clear text and images.

  • Page 19: Troubleshooting

    Troubleshooting No picture • Display card should be completely seated in its slot. • Power Button and computer power switch should be in the ON position. • Signal cable should be completely connected to display card/computer. • Check connector for bent or pushed-in pins. Image is scrolling or unstable •...
  • Page 20 TCO’99 Diamond Pro 750 / Diamond Plus 93 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 to reducing the burden on the environment and also to the further develop- ment of environmentally adapted electronics products.
  • Page 21 TCO’99 – continued TCO’99 demand requires that plastic components weighing more than 25 grams must not contain flame retar- dants with organically bound chlorine and bromine. Flame retardants are allowed in the printed circuit boards since no substitutes are available. Lead** Lead can be found in picture tubes, display screens, solders and capacitors.

  • Page 22: Serial Number Information

    Serial Number Information Refer to the serial number information shown below. EX.) SERIAL NUMBER LABEL Model : DPlus93SB SERIAL NO. : g g g g g g g g g Manufactured Year : ( Last digit ) Manufactured Month : January to September 1 to 9 October...
  • Page 23 DISASSEMBLY • Before you disassemble the set, turn off power and pull out the power plug. • Use the appropriate screwdriver that fits the screw. If you use screwdriver that does not fit, you may break the screws. • Assembly is the opposite process of Disassembly. •...
  • Page 24 CRT BOARD 1. Remove the nine terminals and desolder the five points as shown. Terminals Solder 2. Disconnect the connectors “S201”, “S202”, “S203” and “GND”. 3. Desoldor the wires: “White wire”, “Red wire” and “G2”. S202 S201 S203 Red wire White wire...
  • Page 25 MAIN BOARD 1. Disconnect the connectors “S601”, “S602”, ”S101” and “GND”. 2. Remove the screw (P-#2CRBITS*4*8*15BF) and two screws (PL-CPIMS*4*10*15BF). S602 S601 S101 Screw Screw (P-#2CRBITS*4*8*15BF) (PL-CPIMS*4*10*15BF) 3. Disconnect the connectors “GND” and “S301”. 4. Remove the screw (P-#2CRBITS*4*8*15BF) . 5.
  • Page 26 6. Remove the four screws (PL-CPTS*4*16*15BF) and remove the Chassis Base from Cabinet Front ASSY. Screws (PL-CPTS*4*16*15BF) 7. Remove the seven screws (PL-CPTS*3*8*15BF) and two screws (PL-CPIMS*3*10*15BF). 8. Remove the Main Board from Chassis Base. Screw (PL-CPTS*3*8*15BF) Screw (PL-CPIMS*3*10*15BF)
  • Page 27 ADJUSTMENT PROCEDURES TABLE OF CONTENTS Page 1. Adjustment & Inspection Tools.................... 4-2 Timing Table ........................4-2 3. Normal Condition Definition ....................4-2 4. Hot Key Operation ......................4-3 5. B+ Check ........................... 4-5 6. X-RAY Test ........................4-5 7. H. V. Adjustment ....................... 4-5 8.

  • Page 28: Adjustment & Inspection Tools

    1. Adjustment & Inspection Tools (A) Color Analyzer (B) Signal Generator CHROMA 2235 or compatible (C) Multi Meter (D) Hi-Voltage Probe (E) Convergence Meter (F) Degaussing Probe (G) Power Meter Timing Table (Factory Mode –18 Modes) MODE RESOLUTION H-SYNC EREQ. V-SYNC FREQ H . POLARITY V . POLARITY VGA400 31.4KHz 70Hz...

  • Page 29: Hot Key Operation

    4. Hot Key Operation (A) Factory Mode: power on + ‘+’ key + ‘−‘ key. *To hide the Factory menu temporary in Factory mode: Push "RESET" key once while Menu is displayed, then Menu disappears. Push "RESET" key once more, then Menu reappears. (B) Factory Menu TAB 1) BRIGHTNESS / CONTRAST : Brightness...
  • Page 30 TAB 5) TOOLS 1 :Moire canceller :Linearity(VER.) :Linearity balance :Convergence(HOR.) :Convergence(VER.) TAB 6) TOOLS 2 TOOL 2 is as same as user mode TAB 7) INFORMATION DS :Destination...

  • Page 31: B+ Check

    5. B+ Check (A) Mode: No.12. (B) Pattern: Full White. (Brightness set to cut off) (C) Check other power sources are: 83.9V ±1V, 7.05V ±0.3V, 26.5V ±1V, -14.3V ±1V, 14.2V ±0.3V. 6. X-RAY Test (A) Mode: No.12 (B) Pattern: Normal Crosshatch (Brightness just cut off) (C) Test Apply a resistor (4.7K, 1/4W, 1%) between TP1 and TP2 then power on, Monitor should be active in x-ray protector.

  • Page 32: White Balance Adjustment

    11. White Balance adjustment (A) Setting Enter Factory Mode, Mode: No.12, Pattern: Full White. Warm up 60 min. Make External Degauss. (B) Cut Off Adjustment 1. Select the color Mode 9300K. 2. Cut Off Adjustment : Video Signal Off(0.Vp-p),Bright Control set to Max., Adjust G. Bias at the Brightness 3.4 ±0.7cd/m (1FL ±0.2FL).
  • Page 33 2. 5000K (Select color Mode 5000K) 1) Video Signal off (0.Vp-p), Contrast set to Max, Adjust Brightness to 0.1cd/m 2) 50*50mm Green block Pattern, Adjust G Gain to Y=70cd/m 3) 50*50mm White block Pattern, Adjust R, B Gain to x=0.345, y=0.359. 4) Adjust R, G, B gain again to meet following spec.

  • Page 34: Focus Adjustment

    12. Focus Adjustment (A) Mode: No.12, 9300K (B) Pattern: Green Crosshatch, Brightness just cut off, Contrast maximum. (C) Adjust V- Parabola Vp-p by OSM V-Focus control in Factory Mode. V focus: 73% of control bar. (D) Check T303 output voltage of the video range. H-para=300V ±30V V-para=150V ±10V Horizontal...

  • Page 35: Convergence Adjustment

    14. Convergence Adjustment CH : Convergence error of horizontal direction CV : Convergence error of vertical direction (1) Receive signal 12 (Cross hatch pattern). (2) Measure convergence error. If it is out of spec, adjust convergence by 4-pole magnets and 6-pole magnets.

  • Page 36: Distortion Adjustment

    16. Distortion Adjustment Factory mode setting * After completion of adjustment exit the factory mode and data will be saved. Signal: All signals Cross hatch Perform the adjust for signal No.13 in step 1 ~ 3. Perform the adjust for above all signal in step 4 ~ 5. 1.
  • Page 37 3. Parallelogram distortion Adjustment (1) Select the “ “ icon in OSM TAB 4. (2) Adjust “+”, “-“ SW so that the vertical line and horizontal line at the screen’s center fall at right angles. (less than 90 ±0.5 degree) 4.

  • Page 38: Setting Before Shipment

    17. Setting Before Shipment (A) Color Temp: 9300K(SB mode off). (B) OSM position: Center of the screen (C) Brightness: Preset (D) H moire: Minimum (E) Refresh Notifier: OFF (F) OSM turn off time: 45 sec (G) IPM off mode: Enable (H) Language: English for A,B,C,R Version, Japanese for J Version.

  • Page 39: Adjustment Magnetic Field

    18. Adjustment Magnetic Field Vertical: +40uT, Horizontal: ±0uT(Neutral) * Notes About Degaussing Method Follow the degaussing procedure as below. (To prevent intertwinement of aperture grille.) 1) Use stick type degaussing probe at demagnetizing CRT. Do not use ring type degaussing probe. 2) In order to remove a magnetization from front, top, bottom and side of CRT, and bottom chassis.

  • Page 40: Timing Sheet

    19. TIMING SHEET Preset Mode No. VESA VESA VESA (MAC) 640*400 640*480 640*480 640*480 800*600 832*624 Signal Name (75) (85) (75) (75) 640*400 640*480 640*480 640*480 800*600 832*624 Resolution 25.175 25.175 31.500 36.000 49.500 57.283 Dot Clock (MHz 31.47 31.469 37.50 43.269 46.875...
  • Page 41 Preset Mode No. VESA VESA VESA VESA VESA VESA 800*600 1024*768 1280*1024 1024*768 1280*1024 1280*1024 Signal Name (85) (75) (60) (85) (75) (85) 800*600 1024*768 1280*1024 1024*768 1280*1024 1280*1024 Resolution 56.250 78.750 108.000 94.5 135.0 157.5 Dot Clock (MHz) 53.674 60.023 63.981 68.677...
  • Page 42 Preset Mode No. VESA VESA VESA 1600*1200 1024*768 800*600 640*480 1152*870 720*400 Signal Name (75) (60) (60) (67) (75) (70) 1600*1200 1024*768 800*600 640*480 1152*870 720*400 Resolution 202.5 65.0 40.0 30.24 28.322 Dot Clock (MHz) 93.75 48.36 37.8 35.0 68.681 31.469 (kHz) 66.67...
  • Page 43 INSPECTION TABLE OF CONTENTS Page 1.Scope --------------------------------------------------------------------------------------------------------------- 5-2 1.1 Introduction --------------------------------------------------------------------------------------------------- 5-2 1.2 General Description ---------------------------------------------------------------------------------------- 5-3 1.3 Regulations -------------------------------------------------------------------------------------------------- 5-4 1.4 Regulation Information & Marking Location ---------------------------------------------------------- 5-5 2. CRT Specifications ---------------------------------------------------------------------------------------------- 5-6 3. Electric Specifications ------------------------------------------------------------------------------------------ 5-7 3.1 Deflections --------------------------------------------------------------------------------------------------- 5-7 3.2 Signal Input --------------------------------------------------------------------------------------------------- 5-7 3.3 Video Performance ----------------------------------------------------------------------------------------- 5-7 3.4 Power Supply ------------------------------------------------------------------------------------------------ 5-8...

  • Page 44: Scope

    1.Scope 1.1 Introduction This document defines the design and performance requirements for a 19 inch (18inch Viewable), color display monitor. This monitor uses a 19 inch Flat AG Trio (Aperture Grille) type CRT. This monitor is capable of maximum resolution of 1600 x 1200 pixels at 76 Hz non-interlaced mode, and is capable of horizontal frequencies between 30kHz and 96kHz.

  • Page 45: General Description

    1.2 General Description Item Spec. REMARKS Mitsubishi / M46LXH51X31 Vendor / Model No. Type Diamondtron M2+ (Aperture Grille) Size 48cm / 45.7cm Diagnonal Viewable Image 1 CRT (19" / 18" Diagnonal Viewable Image) Grill Speacing Approx. 0.25mm (center) / 0.27mm (edge) (Phosphor Spacing) (Approx.

  • Page 46: Regulations

    1.3 Regulations GEOGRAPHICAL REGULATIONS REGION SAFETY X-RAY ELF/VLF* Power Ergonomics Miscellaneo Management* And others DPlus73SB(B) EN55022-B MPR-III Energy Star TUV-GS WHQL DPlus73SB (C) C-UL EN55024 TCO’99 TCO’99 (IS9241-3 (Win ME, DPlus73SB (R) TUV-GS EN61000-3-2 IS9241-7 Win 2000, PCBC EN61000-3-3 IS9241-8) Win XP) Gost C-tick...

  • Page 47: Regulation Information & Marking Location

    1.4 Regulation Information & Marking Location Marking Regulation Information Location UL1950 3rd Edition (or UL60950 3 edition) C-UL CAN/CSA-C22.2 NO.950:1995 (or CAN/CSA-C22.2 No.60950:2000) (1),(2) TUV-GS EN60950 : 1992 & AD1/AD2/AD3/AD4/AD11(or EN60950:2000), EK1-ITB 2000, ISO9241-3: 1992, ISO9241-7: 1998, ISO9241-8: 1997 Singapore Safety CCIB Chinese Safety &...

  • Page 48: Crt Specifications

    2. CRT Specifications Vendor Mitsubishi CRT Model No. M46LXH51X31 Type Diamondtron NF (Aperture Grille) 46cm/43cm Diagonal View able Image Size (19”/18” Diagonal Viewable Image) Dot pitch 0.25mm / 0.27mm Phosphor Spacing 0.26mm Deflection Angle 90 degree Phosphor Type Electron Gun Type...

  • Page 49: Electric Specifications

    3. Electric Specifications 3.1 Deflections Scanning Frequency 30 – 96 kHz > 1.1 µsec Back Porch Horizontal > 2.3 µsec Blanking > 0.9 µsec H-sync Width Scanning frequency 50 – 160 Hz > 420 µsec V-sync + V-back Porch Vertical 2H <...

  • Page 50: Power Supply

    3.4 Power Supply 100 - 240 VAC ± 10% Input Voltage 50/60Hz ± 3Hz Frequency Power Consumption (Max.) 100W 100 - 240VAC, 2.2A Condition (Monitor): Input voltage:100-240VAC Signal: No.13 (1600x1200 (75Hz), (All white)) Contrast: Max, Brightness: Max, SB Mode: ON H/V size: full scan Others: default position (Typical)

  • Page 51: Degaussing

    3.6 Degaussing Auto Degaussing The monitor has an automatic degaussing function which activates when the unit is turned on. Manual Degaussing This activates degaussing at the user’s discretion after the unit is operating The Monitor requires minimum of 15 minutes between manual degaussing operations. 4.
  • Page 52 4.1.2 OSM (On-Screen Manager) Function 4.1.2.1 OSM Menu Tab 1 Tab 2 Tab 3 Tab 4 5-10...
  • Page 53 Tab 5 Tab 6 Tab 6 (Language) Tab 6 (OSM Position) Tab 6 (OSM Turn off) Tab 6 (OSM Lock) Tab 6 (IPM OFF Mode) 5-11...
  • Page 54 Tag6 (Edge Lock) Tag6 (Hot Key) Tab 6 Factory Preset Tab 7 (URL indication) Tab 7 (Display Mode) Tab 7 (Monitor info.) 5-12...
  • Page 55 Tab 7 (Refresh Notifier) Refresh Notifier Item Reset Tab Reset Factory Preset 5-13...
  • Page 56 Others 5-14...
  • Page 57 4.1.2.2 OSM Item variability & Default position. Item Default Item Push"+" Push"-" Reset Brightness 0-100% Down (Normal, SB mode2) Adjusted (SB mode1) Contrast 0-100% 100% Down (A, J) (B, C, R) Degauss Operate Left/Right (H.Posi) 0-100% Adjusted Right Left Down/Up (V.Posi) 0-100% Adjusted Down...
  • Page 58 URL indication Type “W” : WWW.NECMITSUBISHI.COM Type “J” : WWW.NMV.CO.JP Display Mode FH : Horizontal Frequency & Polarity FV : Vertical Frequency & Polarity Monitor Info. Model Name & Serial Number Refresh Notifier OFF/ON Cursor move to +/- Default show factory shipping condition. 5-16...
  • Page 59 4.1.3 Back Panel a: AC POWER CONNECTOR (3P IEC Plug) b: SIGNAL INPUT CONNECTOR pig-tail type (D-SUB 15P) Signal Cable: Length:1800 ±50mm, Color: Hazegray (NEC#8508) 4.1.4 Connector Pin Assignment 1) Signal Input Connector (mini D-sub 15P pig-tail cable) Signal Red-video Green-video Blue-video DDC Gnd...
  • Page 60 4.1.5 DDC (Display Data Channel) Functions VESA DDC 2B (EDID data only) , (Support 9pin-5V) VESA DDC/CI 4.1.6 Preset Timing Factory-presets : 14 signals (See 19. Timing sheet of ADJUSTMENT PROCEDURES for detail timing parameters.) (Signal No. 2 to No.8, No.10 to No.13, No.16 to No.18 are adjustment Signals.) User-presets : 10 (F.I.F.O) Preset Timing Discrimination ≥...

  • Page 61: Display Quality

    5. Display Quality 5.1 Basic Test Conditions AC Voltage 120VAC 60Hz or 230VAC 50Hz Video Signal No.12, 1280 x 1024 (85Hz) (fH=91.1kHz fV=85Hz) Video signal 0.70 ±0.01Vp-p Picture Reverse cross hatch pattern Warm Up More than 30 min. with full white picture Temperature 20 –...

  • Page 62: Luminance (Brightness)

    5.3 Luminance (Brightness) Signal No.13 (VESA1280*1024@85Hz) 5.3.1 Luminance Contrast : Max. at CRT center Brightness : default position (Cut off) ≤ Full White ≤ 110 cd/m (Full white pattern) 95cd/m (at 9300K + 8 M.P.C.D.) 5.3.2 Luminance SB Mode : OFF at CRT center Contrast : Max.

  • Page 63: Color

    5.4 Color Signal No.13 (VESA1280*1024@85Hz) 5.4.1Color Temperature Color-1: 9300K + 8 M.P.C.D. Xref=0.283 ± 0.015 (Window pattern) Yref=0.297 ± 0.015 (H:33%,V:33%) Color-2: 8200K Contrast : 100cd/m X=0.290 ± 0.015 Brightness : Cut off Y=0.313 ± 0.015 Color-3: 7500K X=0.300 ± 0.015 Y=0.315 ±...

  • Page 64: Geometric Distortion

    5.5 Geometric Distortion 5.5.1 Partial Distortion The number of pole point each side All Preset Signals Pole point Top and Bottom side: Less than 3 point Left and right side: Less than 2point 5.5.2 Inner Distortion All Preset Signals With Crosshatch ≥...

  • Page 65: Linearity

    5.5.7. Parallelogram All Preset Signals α -0.8mm ≤ a ≤ +0.8mm or -0.2 degree ≤ α ≤ +0.2 degree 5.5.8 Overall Distortion All Preset Signals : d ≤ 1.5mm : b ≤ 1.5mm Bottom : a ≤ 1.5mm Left side Right side : c ≤...

  • Page 66: Misconvergence

    5.7 Misconvergence Zone A: X, Y ≤ 0.25 mm within the 236 mm diameter circle Misconvergence Zone B: X, Y ≤ 0.3 mm within 315 mm x 236 mm * With White Crosshatch (17 lines horizontally by 13 lines vertically ) applied. * Zone A is a circular area with 236mm diameter at the center.

  • Page 67: Halo

    5.9 Halo Halo Character: Signal No.13 Color: Crosshatch Contrast : Max. Judgment: Brightness: Preset Each color (Red, Blue) line do not form halos. Vertical lines : halos + core are less than 7 grills(R), 7 grills(B) Horizontal lines : core : halos = 1 : less than 1.5 Horizontal Vertical Core...

  • Page 68: Crt Limits Of Screen And Faceplate Blemish

    6. CRT Limits of Screen and Faceplate Blemish 6.1 CRT Face plate defect 6.1.1 Inspection condition 1) Adjust each gun to provide approximately 34cd/m2 of 9300K+27M.P.C.D. (or 6550K+727M.P.C.D.) light at the center of the screen. Ambient light level at the tube face should be approximately 10 luxes. 2) When the tube is not operating, the screen should be viewed under high-level source incandescent light of approximately 200 luxes measured at he faceplate surface.

  • Page 69: Ar-Film Blemishes

    2) Face plate defect a. Blisters, opaque spots and elongated closed blisters Average diameter (*1) Allowable number (pcs) Minimum Separation (mm) (mm) Zone A Zone B Total 0.76 0.51 ~ 0.75 0.26 ~ 0.50 (*2) 0.11 ~ 0.25 Note (*1) Mean diameter shall be either one of the following values, which is smaller. (a+b)/2 or a/20+2b (a: length, b: width) Note (*2) Less than 5pcs.
  • Page 70 6.2.2 Quality zone The screen is divided into following 3 zones. Zone A: Inside of the central rectangle of horizontal 360mm by 270mm on the screen. Zone B: The area between outside the rectangle and the edge of the phosphor screen. Zone C: The area outside the edge of the phosphor screen.
  • Page 71 Standards Average diameter classified by a contrast (Note 1) (mm) Allowable number Allowable High contrast Middle contrast Low contrast Zone A Zone B Length (mm) ~ 0.10 ~ 0.20 ~ 0.50 Ignore Ignore 0.11 ~ 0.25 0.21 ~ 0.50 0.51 ~ 1.25 2 [4] 4 [5] 0.26 ~ 0.50...

  • Page 72: Inspection Of Plug & Play Communication And Osm "Monitor Information" For Model Name/ Serial Number

    7. Inspection of PLUG & PLAY Communication and OSM "MONITOR INFORMATION" for Model Name/ Serial Number 7.1 A System Construction This system should be connected as shown below. Program Disk Part No.599910508 Part No. 599910593 Signal Cable DESKTOP/NOTE Printer Cable EDID JIG (NPG) Signal Generator...
  • Page 73 g. Check the serial number of the set and enter an input of the following code from the keyboard. 08109710 Serial Number (Model Code + 1 Space + Serial No.) Example: 08109716 2450001YB h. Press the Enter key. Then, the EDID data, OSM model name, and the serial number begin to be written in.

  • Page 74: Error Messages

    7.5 Error Messages • IIC Communication Error Communication disabled • EDID Check Sum Error Entry of false EDID • DDC2 Does Not Find Head Data DDC2 Communication disabled 7.6 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.

  • Page 75: Appendix 1 Preset Timing Chart

    Appendix 1 Preset Timing Chart [ H-SYNC ] [ VIDEO ] [ V-SYNC ] [ VIDEO ] Preset Signal Clock Signal Name (uSec) (uSec) (uSec) (uSec) (uSec) (mSec) (mSec) (mSec) (mSec) (mSec) (MHz) (kHz) (Hz) (dot) (dot) (dot) (dot) (dot) (line) (line) (line)

  • Page 76: Trouble Shooting

    TROUBLE SHOOTING TABLE OF CONTENTS Refer to User’s Manual trouble shooting section before using this chart. Page 1. NO OPERATION, POWER LED FLASH ............... 6-2 2. NO OPERATION, POWER LED OFF ................6-3 3. VIDEO NOISE, NO SYNCHRONOUS ................6-4 4.

  • Page 77: No Operation, Power Led Flash

    1. NO OPERATION, POWER LED FLASH POWER LED FLASH POWER SW TURN OFF MULTIMETER TEST Q314, Q504, D505, D151, D152, D153, D154, D155 1. DC P/S O/P VOLTAGE SET AT 12V,CURRENT 600MA. POSITIVE CONNECT C330”+”. NEGATIVE CONNECT TO U501-pin 7. 2.

  • Page 78: No Operation, Power Led Off

    2. NO OPERATION, POWER LED OFF POWER SW TURN OFF CHECK F101 CHECK Q101, Q102, r121 1. DC P/S O/P VOLTAGE SET AT 17V,CURRENT SET AT 200MA. POSITIVE CONNECT TO C111”+”. NEGATIVE CONNECT TO C107”-“. SCOPE SET AT 10V/DIV, 10US/DIV, PROBE CHECK CONNECT TO Q101-GATE AND C107”-“.

  • Page 79: Video Noise, No Synchronous

    3. VIDEO NOISE, NO SYNCHRONOUS CHECK Q101 G-S FREQUENCY CHECK HORIZONTAL CHECK D116, D115 SYNCRONIZE FREQUENCY l501 SYNC “+” R108, R118 WITH H-SYNC TO GND, D116 TO GND CHECK Q319 G-S FREQUENCY CHECK HORIZONTAL SYNCRONIZE CHECK U501 FREQUENCY C359 TO GND WITH H-SYNC NORMAL OPERATION...

  • Page 80: No Video

    4. NO VIDEO NO VIDEO CHECK REFER TO SCREEN CONTROL “NO RASTER” CLOCKWISE ON PAGE CHECK TROUBLE IN U201 PIN 5, 6, 7 R/G/B SIGNAL, SIGNAL LEVEL SIGNAL CABLE CHECK PROBLEM IN U201 U201 PIN 18, 19, 20 CLAMP (PIN 23) SIGNAL LEVEL U201 12V VOLTAGE CHECK...

  • Page 81: No Raster

    5. NO RASTER NO RASTER POWER SUPPLY CHECK CHECK CHECK PROBLEM IN U501 PIN 14, 15 MCU U701 H/V SYNC CHECK U701 PIN 35, PIN 2 IS TROUBLE CHECK CHECK ISCL, ISDC U501 PIN 6, 8 IN U501 BDRY, HDRY CHECK TROUBLE IN Q504 DRAIN ABOUT...
  • Page 82 Continue CHECK TROUBLE IN B301 EMITTER H-BLKD C331, D316, C332 PULSE 40Vp-p CHECK CHECK TROUBLE IN Q305 DRAIN PULSE FBT 2PIN Q309, R301, D151 280Vp-p TROUBLE IN U301, Q303, Q305 CHECK TROUBLE IN G1 VOLTAGE ABOUT Q307, ZD303, T301, D309 -20 ~ -5V TROUBLE IN G2 VOLTAGE T301...

  • Page 83: Sync Trouble

    6. H. V. SYNC TROUBLE TROUBLE IN HOR OR VER SYNC CHECK CONNECTOR S701 TROUBLE IN (PIN1, 2), SIGNAL SIGNAL CABLE CHECK TROUBLE IN U701 (PIN 39,40) H/V SYNC LINE & H/V SYNC Q701, Q702 SIGNAL CHECK CHECK TROUBLE IN U701 (PIN 32,33) U701 (PIN 5) 5V LINE...

  • Page 84: Poor Focus

    7. POOR FOCUS POOR FOCUS CHECK T302 3PIN H-DYNAMIC ADJUST PARBOLA WAVEFORM 500Vp-p T301 STATIC FOCUS VR AND V-DYNAMIC PARABOLA DYNAMIC FOCUS VR WAVEFORM 150Vp-p 1. CHECK STATIC FOCUS AND DYNAMIC FOCUS VR LINE TO CRT SOCKET. 2. CRT SOCKET OR CRT POOR. CHECK T302 H AND V TROUBLE IN...

  • Page 85: Poor Horizontal Linearity

    8. POOR HORIZONTAL LINEARITY POOR HORIZONTAL LINEARITY TROUBLE T303, Q310 6-10...

  • Page 86: Circuit Description

    CIRCUIT DESCRIPTION TABLE OF CONTENTS Page 1. Power Circuit ........................7-3 1.1 General Description ......................7-3 1.2 EMI Circuit ......................... 7-3 1.3 AC Rectification and Smoothing Capacitor ................ 7-3 1.4 Degaussing Circuit ......................7-3 1.5 Transformer and Energy ....................7-3 1.6 Overcurrent Protection .......................
  • Page 87 3.2.3 Horizontal Width Control Circuit ..................7-9 3.2.4 Horizontal Drive Circuit ....................7-9 3.2.5 Horizontal Output Circuit and Horizontal Feedback Circuit .......... 7-10 3.2.6 Linear Correction Circuit and Character S Correction Circuit ........7-11 3.2.7 Centering Circuit ......................7-12 3.3 Vertical Deflection Circuit ....................7-13 3.3.1 Introduction ........................

  • Page 88: Power Circuit

    1. Power Circuit 1.1 General Description This power unit uses a switching power supply. The switching frequency is synchronized within the range of the horizontal frequencies (31kHz to 96kHz). 1.2 EMI Circuit The EMI circuit comes in a two-stage configuration. The first stage is composed of the choke coil in the common mode and the capacitor X.

  • Page 89: Starter Circuit

    1.7 Starter Circuit When the power switch is turned ON, Q102 is turned ON and a charging current flows into C111 through R102, R103, Q102, and D105. When the voltage at U101 Pin 7 reaches 16V, the U101 begins to oscillate. When the U101 begins to oscillate, the currents consumed in U101 and Q101 increased.

  • Page 90: Mcu

    2. MCU 2.1 Frequency Specifications Horizontal Frequency : 29.5kHz to 96kHz Vertical Frequency : 43Hz to 160Hz Support of composite sync signals 2.2 System Architecture 1) MCU - Myson MTV212NM32, 32k-byte ROM size. 2) E PROM - 24C08 Series, 8k-bits (initialize enabled by microcomputer). 3) OSD - Myson MTV030N16.

  • Page 91: Pin Assignments

    2.5 Pin Assignments Pin # Function Circuit Pin # Function Circuit symbols symbols UNLOCK supervisory input Signaling cable detection input DEFL-IN #5(PC) of OSC IC MUTE output Key input MUTE1 Protector input Key input X/YRAY-IN RESET input DDC communication port RESET HSDA Power input...

  • Page 92: Deflection Circuit

    3. Deflection Circuit 3.1 Deflection Control IC (IC501) IC501 is in charge of the horizontal width control and the generation of vertical pre-amplifier output. This IC follows the frequency and generates a proper output of horizontal drive pulses. For the screen size control, this IC also generates the B+ output drive pulses.

  • Page 93: Horizontal Deflection Circuit

    3.2 Horizontal Deflection Circuit 3.2.1 Horizontal Oscillator Circuit The outputs of the horizontal oscillator drive pulses (Pin 8 H_DRV) and the Power B drive pulses (Pin 6 B_DRIV) are generated from the U501 (TDA4856). The horizontal drive pulses of about 10Vp-p are output from Pin 8 (H_DRV) in the open collector mode. The duty cycle is about 50% and its frequency is dependent on the input horizontal sync frequency.

  • Page 94: Horizontal Width Control Circuit

    3.2.3 Horizontal Width Control Circuit Q314 is controlled by the horizontal drive pulses from IC501. While Q314 is turned ON, the energy is stored in the horizontal deflection yoke. When it is turned OFF, the stored energy flows into C331 and C332. This operation is repeated to maintain the horizontal deflection.

  • Page 95: Horizontal Output Circuit And Horizontal Feedback Circuit

    3.2.5 Horizontal Output Circuit and Horizontal Feedback Circuit The horizontal output circuit is composed of the horizontal transistor Q314, the damper diode D317, the resonance capacitor C332 and the deflection yoke (H_DY). When the base current fed from the drive circuit is turned ON, a deflection current flows into the horizontal transistor Q314 for the specified time period.
  • Page 96 3.2.6 Linear Correction Circuit and “S” Correction capacitor Circuit The horizontal linearity correction circuit uses a variable linear coil (T303). The variable linear coil T303 is used to control the current with the aid of Q310, R339, C322, and C323 which flows on the primary side of the coil.

  • Page 97: Centering Circuit

    3.2.7 Centering Circuit The horizontal raster centering circuit is inserted between the horizontal deflection source circuit and the horizontal deflection output circuit (H_DY). This circuit is used to assure a current flow of the DC current bias component in order to shift the deflection current waveform toward the horizontal deflection circuit. The inflow current is controlled through the adjustment of VR501.

  • Page 98: Vertical Deflection Circuit

    3.3 Vertical Deflection Circuit 3.3.1 Introduction The vertical deflection circuit gains an input of vertical saw-tooth wave signals generated from the oscillator IC501 Pin 13 Vout1 and Pin 12 Vout2. The resultant output signal is converted into a current that drives the DY (V) through the use of the U401 (TDA8172) driven by +14V and -12V of the power supply.

  • Page 99: Saw-Tooth Wave Signals And Waveform Correction Circuit (U501)

    3.3.2 Saw-tooth Wave Signal and Waveform Correction Circuit (U501) 1) Vertical oscillator When a vertical sync signal input is entered into U501 Pin 14, the saw-tooth wave signals are output from U501 Pin 12 and 13. The frequencies of these waveforms are identical with those of the vertical input sync signal.

  • Page 100: Safety Protection Circuit And X-Ray Protection Circuit

    6. Safety Protection Circuit and X-ray Protection Circuit 6.1 X-ray Protection Circuit This is a protection circuit intended to prevent the radiation of X-ray from exceeding the dangerous level, possibly caused by an unusual high voltage rise. Please do not modify either the high voltage circuit or the safety protection circuit. The high voltage upper limit value and the beam current value are defined by the upper limit curves of X-ray radiation in the CRT.

  • Page 101: Video Circuit

    7. Video Circuit 7.1 Video Pre-amplifier The U201 is a video pre-amplifier. It is used to control the following functions. U501 CLAMP U701 OSC IC U204 CLAMP D-SUB OUTPUT- U201 Pre-Amp U202 H-BLK B-Bias G-Bias R-Bias H-BLK BIAS circuit (Fig. 7.1) Video Pre-amplifier 7.1.1 Video Signal Mixing In U201, the video signal is mixed with the OSD signal (3, 2, 1 for B, G, R respectively).

  • Page 102: Contrast, White Balance, And Brightness Control

    7.1.4 Contrast, White Balance, and Brightness Control The MPU (U701) sends an 8-bit control data of contrast, white balance, and brightness to the U201 through the I C bus (SCL, SDA line). The contrast data is used for the simultaneous control of the R, G, B cathode voltages for the three channels.

  • Page 103: Vertical Flyback Blanking Circuit

    7.3 Vertical Flyback Blanking Circuit The V-OUT output from the MPU U701 Pin 32 is synthesized with the vertical deflection output that has been shaped by the circuit of C409, D402, R415, R414, and C408. The synthesized output is used for the blanking operation of the vertical flyback period, by switching Q401 that is connected to G1.

  • Page 104: Abl Circuit

    7.5 ABL Circuit The ABL circuit performs the adjustment of the ABL level with the use of VR302. 7.6 SB MODE (Super Bright Mode) The Super Bright Mode (SB MODE hereafter) is a function to achieve the effective display of images by emphasizing their intonation.

  • Page 105: Replacement Parts List

    REPLACEMENT PARTS LIST The components specified for Model DPlus 93SB(B) SYMBOL Part No for NPG Part No for NMV DESCRIPTION *** ICS *** U201 80016621 79PQ2544 IC LM1267 U202 80016761 79PQ2546 OSD IC MTV030N-046 FOR P7 U203 80010891 79PQ1731 IC LM2480 U204 80016611 79PQ2543...
  • Page 106 Part No for NPG Part No for NMV SYMBOL DESCRIPTION Q316 80014321 79PQ2529 TR NPN KRC102M TO-92(T) Q317 EF206301 79PQ0064 FET N YTAF630 TO-220F Q318 80014321 79PQ2529 TR NPN KRC102M TO-92(T) Q319 80003311 79PQ1168 FET N YTAF640 TO-220F Q320 80014321 79PQ2529 TR NPN KRC102M TO-92(T) Q321...
  • Page 107 Part No for NPG Part No for NMV SYMBOL DESCRIPTION D150 EJA05819 79PQ1644 DIODE STKY/T 1A/40V 1N581 D151 80016531 79PQ2541 DIODE 3A/600V RL4A (SANKE D152 80016961 79PQ2551 DIODE/A 3.5A/200V RL4Z(SA D153 80012371 79PQ2528 DIODE 3A/200V SF33(CHENMK D154 80003571 79PQ2522 DIODE 200V/2A UF003 (CHEN D155 80010341 79PQ2063...
  • Page 108 Part No for NPG Part No for NMV SYMBOL DESCRIPTION D504 EJ044148 79PQ0065 DIODE T" 1N4148" D505 80001121 79PQ2521 DIODE 3A/400V HER305G D507 80003841 79PQ1489 DIODE 1A/20V UF4003 DG41 D601 EJ044148 79PQ0065 DIODE T" 1N4148" D602 EJ044148 79PQ0065 DIODE T" 1N4148" D605 EJ044148 79PQ0065...
  • Page 109 Part No for NPG Part No for NMV SYMBOL DESCRIPTION *** COILS & FILTERS *** B201 HC006002 79PQ1104 BEAD 3.5X4.7/T B203 80000561 79PQ1232 BEAD 3.5*6*0.8/T B204 80000561 79PQ1232 BEAD 3.5*6*0.8/T L101 HA100041 79PQ2810 CORE EMI COMMON CHOKE25MH L131 HA200031 79PQ2811 HARMONIC CHOKE EE42 60MH L151 HB000008...
  • Page 110 Part No for NPG Part No for NMV SYMBOL DESCRIPTION *** APPEARANCE PARTS *** CABB 10102221 79PQ2672 CABINET BACK CABF 10102031 79PQ2513 CABINET FRONT ASSY CHASS 12000631 79PQ2515 CHASSIS BASE PANEL 11700431 79PQ2676 PANEL(DP93SB) REVS 11000991 79PQ2466 REVOLVING STAND ASSY SPONGE 17000301 79PQ1359...
  • Page 111 Part No for NPG Part No for NMV SYMBOL DESCRIPTION R126 FA040472 79PQ0114 CARBON 1/8W(T) 5% 4.7K R127 FA330470 79PQ2266 CARBON 1/2W(T) 5% 47H R128 FA330564 79PQ1544 CARBON 1/2(T) 5% 560K R129 FA330564 79PQ1544 CARBON 1/2(T) 5% 560K R131 FA330434 79PQ2558 CARBON 1/2W(T) 5% 430K R132...
  • Page 112 Part No for NPG Part No for NMV SYMBOL DESCRIPTION R250 FA040101 79PQ0081 CARBON 1/8W(T) 5% 100OHM R251 FA040330 79PQ0105 CARBON 1/8W(T) 5% 33OHM R253 FB247509 79PQ0168 METAL 1/4W(T) 1% 75OHM R255 FA240330 79PQ1645 CARBON 1/4W(T) 5% 33H R256 FA040105 79PQ0085 CARBON 1/8W(T) 5% 1M R257...
  • Page 113 Part No for NPG Part No for NMV SYMBOL DESCRIPTION R324 FA330223 79PQ2554 CARBON 1/2W(T) 5% 22K R325 FA040821 79PQ1025 CARBON 1/8W(T) 5% 820 R326 FA040103 79PQ0083 CARBON 1/8W(T) 5% 10K R327 FA040333 79PQ0106 CARBON 1/8W(T) 5% 33K R328 FA040103 79PQ0083 CARBON 1/8W(T) 5% 10K R329...
  • Page 114 Part No for NPG Part No for NMV SYMBOL DESCRIPTION R410 FA040302 79PQ1529 CARBON 1/8W(T) 5% 3K R411 FA040222 79PQ0095 CARBON 1/8W(T) 5% 2.2K R412 FA040103 79PQ0083 CARBON 1/8W(T) 5% 10K R413 FA040472 79PQ0114 CARBON 1/8W(T) 5% 4.7K R414 FA040332 79PQ0321 CARBON 1/8W(T) 5% 3.3K R415...
  • Page 115 Part No for NPG Part No for NMV SYMBOL DESCRIPTION R627 FA040103 79PQ0083 CARBON 1/8W(T) 5% 10K R628 FA040103 79PQ0083 CARBON 1/8W(T) 5% 10K R629 FB560201 79PQ1474 MOF 2W/M(A) 5% 200OHM R630 FB560201 79PQ1474 MOF 2W/M(A) 5% 200OHM R635 FA040102 79PQ0082 CARBON 1/8W(T) 5% 1K R701...
  • Page 116 Part No for NPG Part No for NMV SYMBOL DESCRIPTION R757 FA040472 79PQ0114 CARBON 1/8W(T) 5% 4.7K R760 FA040392 79PQ0110 CARBON 1/8W(T) 5% 3.9K R762 FA040272 79PQ0100 CARBON 1/8W(T) 5% 2.7K *** CAPACITORS *** C101 GJ047400 79PQ0272 SAFETY X-CAP 0.47U/275V M C102 GJH102E5 79PQ0274...
  • Page 117 Part No for NPG Part No for NMV SYMBOL DESCRIPTION C211 GB910358 79PQ0242 CC Z5V(F)/T 0.01U/50V Z C212 GA410575 79PQ0213 ELECT NP/T 1U/100V M C213 GA210575 79PQ1265 C,ELEC 1UF 100V M C230 GB210458 79PQ0228 CERAMIC Y5V/T 0.1U/50V Z C231 GB910358 79PQ0242 CC Z5V(F)/T 0.01U/50V Z C232...
  • Page 118 Part No for NPG Part No for NMV SYMBOL DESCRIPTION C313 GA310685 79PQ1081 ELECT 85°C/T 10U/250V M C314 GA322555 79PQ0202 ELECT 85°C/T 2.2U/50V M C315 GA347625 79PQ0210 ELECT 85°C/T 47U/16V M C316 GB910358 79PQ0242 CC Z5V(F)/T 0.01U/50V Z C317 GBE332F5 79PQ2583 CC Z5U(E)/A 3300P/500V M C318...
  • Page 119 Part No for NPG Part No for NMV SYMBOL DESCRIPTION C514 GF210252 79PQ0748 MEF CAP BOX 0.001U/50V J C515 GA347755 79PQ2578 ELECT 85OC/T 470U/50V M C516 GB7471H3 79PQ0239 CC Y5P(B)/T 470P/1KV K C517 GFD304E2 79PQ1624 PLASTIC PMM/T 0.3U/400V J C518 GA310725 79PQ0199 ELECT 85°C/T 100U/16V M...
  • Page 120 9. BLOCK DIAGRAM HORIZONTAL AND VERTICAL KA3842 SYNC PROCESSOR SMPS TDA 4856 EH.T. H/HV SYSTEM ARCHITECTURE Hi-VOLTAGE EW-OUT & HOUT / V.GEOMETRY STAGE MCU/E²PROM/DDC VERT OUT DYNAMIC FOCUSING TDA 8172 RGB OUT MTV212+24C08 LM2465 DC-DC DEFLECT-STAGE CUT-OFF I²C MOTHER BOARD LM2480 RGB PREAMP CUT-OFF...
  • Page 121 10. SCHEMATIC DIAGRAM MAIN PWB ASSY (FE991SB/DPlus93SB) 37,38 12,13 10-1...
  • Page 122 10. SCHEMATIC DIAGRAM CRT PWB ASSY (FE991SB/DPlus93SB) 10-2...
  • Page 123 WAVE FORM MAIN PWB ASSY (FE991SB/DPlus93SB) 2Vp-p 4Vp-p 35us PMS MODE ON MODE 10Vp-p 15Vp-p -14V ON MODE 47kHz 12MHz 12MHz 5V0-p 5V0-p 5V0-p PMS MODE 5V0-p 5V0-p 5V0-p 6V0-p 5V0-p 5V0-p 10-3...
  • Page 124 15Vp-p 11V0-p 1V0-p 40V0-p 50V0-p 50V0-p 890V0-p 24V0-p 3Vp-p 2V0-p -50V0-p 11V0-p 11V0-p 55Vp-p 350Vp-p 220V0-p 7V0-p 160Vp-p 540Vp-p 10-4...

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