Mitsubishi DP750SB Service Manual
PART NO. 599910596
SERVICE MANUAL
Diamond Pro 750SB
COLOR MONITOR
MODELS DPro 750SB (B)/-BK(B)
NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION
JUNE 2002
200207
08109705
08109730
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.
This equipment utilized a micro-gap power switch. Turn off the set by first pushing the front panel
power switch. Next, remove the power cord from the AC outlet.
To prevent fire or shock hazards, do not expose this unit to rain or moisture.
This symbol warns the personnel that un-insulated voltage within the unit may have
sufficient magnitude to cause electric shock.
This symbol alerts the personnel that important literature concerning the operation and
maintenance of this unit has been included.
Therefore, it should be read carefully in order to avoid any problems.
WARNING
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. When servicing display monitor unit, it is required that the provided lead dress is used in the high voltage
circuit area.
5. It is also recommended that shatter proof gogg les are worn, when removing installing and handling the
picture tube. People not equipped with the proper precautionary measures mentioned should keep the
picture tube away from body while handling.
6. As for a connector, pick and extract housing with fingers properly since a disconnection and improper
contacts may occur, when wires of the connector are led.
7. Use a proper screwdriver. If you use screwdriver that does not fit, you may damage the screws.
8. X-radiation precaution
This product contains critical electrical and mechanical parts essential for X-ray protection.
Normal anode voltage is 26.0 kV at zero beam picture tube current under AC 100-120V/220-240V input,
and anode voltage must not exceed the voltages shown below under any operation condition.
To measure anode voltage set brightness for very dim picture, and use a high impedance volt meter
between chassis and anode lead and measure high voltage.
If high voltage exceeds the specifications on the chassis schematic diagram, take the necessary
corrective action.
Table MAXIMUM ANODE VOLTAGE
beam current at 0 mA at 0.6 mA at 1.2 mA
A/B Ver. 31.0 kV 30.5 kV 30.5 kV
9. When you degauss the set with an external degaussing coil, you must keep strictly item “ * Notes about
degaussing method “ of ADJUSTMENT Procedures.
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
User's Manual
1. B Version
User’s Manual
1-1
Declaration of the Manufacturer
E
NERGYSTAR
We hereby certify that the colour monitor
Diamond Pro 750
SB
/ Diamond Plus 93
is in compliance with
Council Directive 73/23/EEC:
– EN 60950
Council Directive 89/336/EEC:
EN 55022
– EN 61000-3-2
– EN 61000-3-3
– EN 55024
and marked with
NEC-Mitsubishi Electric Visual
Systems Corporation
686-1, Nishioi Oi-Machi
Ashigarakami-gun
Kanagawa 258-8533, Japan
Product
SB
As an E
NERGYSTAR
product meets the E
Partner, NEC-Mitsubishi Electronics Display of America, Inc. has determined that this
NERGYSTAR
guidelines for energy efficiency. The E
EPA endorsement of any product or service.
IBM is registered trademark of International Business Machines Corporation.
Apple and Macintosh are registered trademarks of Apple Computer Inc.
Microsoft and Windows are registered trademarks of the Microsoft Corporation.
E
NERGYSTAR
NEC is a registered trademark of NEC Corporation.
All other trademarks or registered trademarks are property of their respective owners.
User’s Manual
2
is a U.S. registered trademark.
1-2
NERGYSTAR
emblem does not represent
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.
CAUTION
RISK OF ELECTRIC SHOCK • DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This symbol warns user that uninsulated voltage within the unit may have sufficient magnitude to cause
electric shock. Therefore, it is dangerous to make any kind of contact with any part inside this unit.
This symbol alerts the user that important literature concerning the operation and maintenance of this unit
has been included. Therefore, it should be read carefully in order to avoid any problems.
Canadian Department of Communications Compliance Statement
DOC: This Class B digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
C-UL: Bears the C-UL Mark and is in compliance with Canadian Safety Regulations
according to C.S.A. C22.2 No. 950.
FCC Information
SB
1. Use the attached specified cables with the Diamond Pro 750
/ Diamond Plus 93SB colour monitor so as
not to interfere with radio and television reception.
(1) Please use the supplied power cord or equivalent to ensure FCC compliance.
(2) Shielded captive type signal cable.
Use of other cables and adapters may cause intereference with radio and television reception.
2. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency
energy, and, if not installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult your dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment.
If necessary, the user should contact the dealer or an experienced radio/television technician for additional
suggestions. The user may find the following booklet, prepared by the Federal Communications Commission,
helpful: ”How to Identify and Resolve Radio-TV Interference Problems.“ This booklet is available from the U.S.
Government Printing Office, Washington, D.C., 20402, Stock No. 004-000-00345-4.
Diamond Pro 750SB / Diamond Plus 93
SB
3
1-3
Contents
Your new Diamond Pro 750
• Diamond Pro 750
• 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.
SB
/ Diamond Plus 93SB monitor box* should contain the following:
SB
/ Diamond Plus 93SB Monitor with tilt/swivel base
Captive Signal Cable
* Remember to save your original box and packing material to transport or ship the monitor.
4 User’s Manual
Power CordUser’s Manual
CD-ROM
1-4
Quick Start
To attach the Diamond Pro 750SB / Diamond Plus 93SB 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.
3. For the PC: Connect the 15-pin mini D-SUB of the captive signal cable to the connector of the display card
in your system (Figure A.1). Tighten all screws.
For the Mac: Connect the Diamond Pro 750
to the monitor connector on the Macintosh (Figure B.1). Attach the 15-pin mini D-SUB end of the captive
signal cable to the Diamond Pro 750
(Figure B.1). Tighten all screws.
4. Connect one end of the power cord to the Diamond Pro 750
end to the power outlet (Figure C.1).
5. Turn on the monitor (Figure D.1) and the computer.
NOTE: If you have any problems, please refer to the Troubleshooting section of this User’s Manual.
SB
/ Diamond Plus 93SB Macintosh cable adapter (not included)
SB
/ Diamond Plus 93SB Macintosh cable adapter on the computer
SB
/ Diamond Plus 93SB monitor and the other
Figure A.1
15-pin
mini
D-SUB
Captive Signal Cable
Figure B.1
Mac Adapter
(Not Included)
Captive Signal Cable
1-5
Diamond Pro 750SB / Diamond Plus 93
SB
5
Quick Start
– continued
Power Outlet
Power
Cord
Figure C.1
Power Button
6
User’s Manual
Figure D.1
1-6
Controls
OSM (On-Screen Manager) control buttons on the front of the monitor function as follows:
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Brightness/Contrast Controls
Brightness: Adjusts the overall image and background screen brightness.
Contrast: Adjusts the image brightness in relation to the background.
Degauss: Eliminates the buildup of stray magnetic fields which alter the correct scan of the electron beams
and affect the purity of the screen colours, focus and convergence. When activated, your screen image will
jump and waver a bit as the screen is demagnetized.
Caution: Please allow a minimum of 20 minutes to elapse between uses of the Degauss Control.
Size and Position Controls
Left/Right: Moves the image horizontally (left or right).
Down/Up: Moves the image vertically (up or down).
Narrow/Wide: Decreases or increases the horizontal size of the image.
Short/Tall: Decreases or increases the vertical size of the image.
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1-7
Diamond Pro 750SB / Diamond Plus 93
SB
7
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.
Red, Green, Blue: Color Control System decreases or increases the monitor's red, green or blue colour guns
depending upon which is selected. The change in colour will appear on screen and the direction (decrease or
increase) will be shown by the bars.
sRGB mode: sRGB mode provides the suitable colour managed picture image. You can not change Red,
Green and Blue colours, brightness and contrast individually.
Colour Temperature Adjustment: Adjusts the colour temperature of the screen image.
Geometry Controls
Geometry Controls Menu
The Geometry controls allow you to adjust the curvature or angle of the sides of your display.
Sides In/Out (pincushion): Decreases or increases the curvature of the sides either inward or outward.
Sides Left/Right (pincushion balance): Decreases or increases the curvature of the sides either to the left
or right.
Sides Tilt (parallelogram): Decreases or increases the tilt of the sides either to the left or right.
Sides Align (trapezoidal): Decreases or increases the bottom of the screen to be the same as the top.
Rotate (raster rotation): Rotates the entire display clockwise or counterclockwise.
Corner Correction: Allows you to adjust the geometry of the corners of your display – Top or Bottom.
Tools 1
Moiré Canceler: Moiré is a wavy pattern which can sometimes appear on the screen. The pattern is repetitive
and superimposed as rippled images. When running certain applications, the wavy pattern is more evident
than in others. To reduce moiré, adjust the level by using –/+ CONTROL buttons.
Linearity: This selection allows you to adjust the spacing of the area on the screen. The purpose of this
control is to ensure that a one-inch circle is a true one-inch circle wherever it is on the screen. The best way to
determine the vertical linearity is as follows:
• Draw equally spaced horizontal lines using a drawing application that has a ruler.
• Use the Vertical Balance control to adjust the lines near the top and bottom of your screen.
• Use the LINEARITY (VER.) control to adjust the spacing between the lines near the center and top of your
screen.
Convergence (Diamond Plus 93
purpose of this control is to ensure that a white line drawn on the screen is as crisp and clear as possible.
• Use the CONVERGENCE (HOR.) control to adjust the alignment of the lines in the up/down direction.
• Use the CONVERGENCE (VER.) control to adjust the alignment of the lines in the left/right direction.
8
User’s Manual
SB
only): Aligns all three colors (R,G,B) to form a single color (white). The
1-8
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.
OSM Turn Off: The OSM controls menu will stay on as long as it is in use. In the OSM Turn Off sub-menu,
you can select how long the monitor waits after the last touch of a button for the OSM controls menu to
disappear. The preset choices are 5 thru 120 seconds.
OSM Lock Out: This control completely locks out access to all OSM controls functions except Brightness
and Contrast. When attempting to activate OSM controls while in the lock out mode, a screen will appear
indicating that OSM controls are locked out. To activate the OSM Lock Out function, press SELECT and
hold + down simultaneously. To deactivate the OSM Lock Out, press SELECT and hold + down simultaneously.
IPM System Off Mode: Enable: The IPM System works
Disable: The Off Mode of the IPM System
NOTE: For standard systems and graphics boards, keep the factory setting at ENABLE.
EdgeLock Control: Operating your monitor at a nonstandard timing may cause images to appear darker than
normal or have color distortion. Use of the EdgeLock control will adjust images to their normal state.
Hot Key: This selection allows you to use as brightness control and –/+ as contrast control.
Factory Preset: Selecting Factory Preset allows you a reset most OSM control settings back to the factory
settings. A warning statement will appear to confirm that you do want to reset ALL settings. Individual settings
can be reset by highlighting the control to be reset and pressing the RESET button.
normally and all stages of
energy savings are utilized.
is not used.
Y
/
Y
Information
Display Mode: Indicates the current mode and frequency setting of the monitor.
Monitor Info: Indicates the model and serial numbers of your monitor.
Refresh Notifier: A message will advise you if the refresh rate of the signal being applied to the monitor by
the computer is too low. For further information, please refer to your display card or system manual.
Diamond Pro 750SB / Diamond Plus 93
SB
9
1-9
Recommended Use
Safety Precautions and Maintenance
FOR OPTIMUM PERFORMANCE, PLEASE NOTE
THE FOLLOWING WHEN SETTING UP AND USING THE
DIAMOND PRO 750
• 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. Refer all servicing to qualified service personnel.
• Do not spill any liquids into the cabinet or use your monitor near water.
• Do not insert objects of any kind into the cabinet slots, as they may touch dangerous voltage points, which
can be harmful or fatal or may cause electric shock, fire or equipment failure.
• Do not place any heavy objects on the power cord. Damage to the cord may cause shock or fire.
• Do not place this product on a sloping or unstable cart, stand or table, as the monitor may fall, causing
serious damage to the monitor.
• Keep the monitor away from high capacity transformers, electric motors and other devices such as external
speakers or fans, which may create strong magnetic fields.
• If possible, position the monitor so that it is facing the east to minimize the effects of the earth’s magnetic
field.
• Changing the direction of the monitor while it is powered on may cause image discolouration. To correct this,
turn the monitor off for 20 minutes before powering it back on.
• When operating the Diamond Pro 750
supply, use a power supply cord that matches the power supply voltage of the AC power outlet being used.
The power supply cord you use must have been approved by and comply with the safety standards of your
country. (Type H05VV-F should be used except in UK)
• In UK, use a BS-approved power cord with molded plug having a black (5A) fuse installed for use with this
monitor. If a power cord is not supplied with this monitor, please contact your supplier.
SB
/ DIAMOND PLUS 93SB COLOUR MONITOR:
SB
/ Diamond Plus 93SB with its AC 220 - 240 V worldwide power
Cleaning Your Monitor
A special coating is provided on the glass (CRT) surface of this monitor to reduce a reflection and static
electricity on the glass surface. Due to the delicate coating on the glass surface, use a lint-free, non-abrasive
cloth (cotton or equivalent) and a non-alcohol, neutral, non-abrasive cleaning solution to minimize dust. If the
screen requires more than a light cleaning, apply a soft neutral detergent and water directly to a soft cloth and
use it upon wringing water, to clean the glass surface. Clean your monitor regularly.
CAUTION:
Benzene, thinner, acid/alkaline detergent, alcohol detergent, detergent with abrasive powder, detergent with
anti-static agent, detergent for cleaning.
Immediately unplug your monitor from the wall outlet and refer servicing to qualified service personnel under
the following conditions:
• When the power supply cord or plug is damaged.
• If liquid has been spilled, or objects have fallen into the monitor.
• If the monitor has been exposed to rain or water.
• If the monitor has been dropped or the cabinet damaged.
• If the monitor does not operate normally by following operating instructions.
10
The following agents will cause damage to the CRT when cleaning the glass surface:
• Allow adequate ventilation around the monitor so that heat can properly
dissipate. Do not block ventilated openings or place the monitor near a radiator
or other heat sources. Do not put anything on top of monitor.
• The power cable connector is the primary means of detaching the system from
CAUTION
the power supply. The monitor should be installed close to a power outlet which
is easily accessible.
• Handle with care when transporting. Save packaging for transporting.
User’s Manual
1-10
Recommended Use
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. Your eyes should look slightly downward when viewing the
middle of the screen.
• Position your monitor no closer than 40 cm and no further away than
60 cm from your eyes. The optimal distance is 50 cm.
• Rest your eyes periodically by focusing on an object at least 6 meter away.
Blink often.
• Position the monitor at a 90° angle to windows and other light sources to
minimize glare and reflections. Adjust the monitor tilt so that ceiling lights
do not reflect on your screen.
• If reflected light makes it hard for you to see your screen, use an anti-glare
filter.
• Clean your monitor regularly. Use a lint-free, non-abrasive cloth and a non-alcohol, neutral, non-abrasive
cleaning solution or glass cleaner to minimize dust.
• Adjust the monitor’s brightness and contrast controls to enhance readability.
• Use a document holder placed close to the screen.
• Position whatever you are looking at most of the time (the screen or reference material) directly in front of
you to minimize turning your head while you are typing.
• Get regular eye checkups.
Ergonomics
To realize the maximum ergonomics benefits, we recommend the following:
• Adjust the Brightness until the background raster disappears
• Do not position the Contrast control to its maximum setting
• Use the preset Size and Position controls with standard signals
• Use the preset Colour Setting and Sides Left/Right controls
• Use non-interlaced signals with a vertical refresh rate between 75 - 120 Hz
• Do not use primary colour blue on a dark background, as it is difficult to see and may produce eye fatigue
due to insufficient contrast
– continued
1-11
Diamond Pro 750SB / Diamond Plus 93
SB
11
Specifications
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12
User’s Manual
1-12
Specifications
– continued
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NOTE: Technical specifications are subject to change without notice.
Diamond Pro 750SB / Diamond Plus 93
1-13
SB
13
Features
SuperBright Diamondtron CRT: This patented flat aperture grille CRT delivers an exceptional viewing experi-
ence with unprecedented brightness and contrast and a virtually flat image that reduces distortion and glare so
that what you see on-screen is what you get on your printed output. 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.
SuperBright Mode : With the simple touch of a button, the brightness level of the Diamondtron CRT doubles.
This function enhances the crispness of images for clarity-conscious applications such as graphics, animation
and video.
Super Bright Mode OFF: for text based images (normal use)
Super Bright Mode-1 ON: for images
Super bright Mode-2 ON: for moving image such as DVD movies
OptiClear Screen Surface: Further reduces reflection and glare and increases contrast without sacrificing focus
level, clarity or brightness.
Dual Dynamic Beam Focus: Provides precise, continuous focus adjustments of the electron beams and optimum image quality, even to the far edges of the screen.
Color Control System with sRGB: Allows you to change between five colour settings on your display to match
your personal preference. The sRGB-enabled colour matching setting found within Color Control helps achieve a
consistent colour environment with other sRGB-enabled hardware and software applications.
On Screen Manager (OSM) Controls: Allows you to quickly and easily adjust all elements of your screen image
via simple to use on-screen menus.
ErgoDesign Features: Enhances human ergonomics to improve the working environment, protect the health of
the user and save money. Examples include OSM controls for quick and easy image adjustments, tilt/swivel base
for preferred angle of vision, space-conscious cabinet design and compliance with MPRII guidelines for lower
emissions.
Plug and Play: The Microsoft solution with the Windows 95/98/Me/2000/XP operating system facilitates setup
and installation by allowing the monitor to send its capabilities (such as screen size and resolutions supported)
directly to your computer, automatically optimizing display performance.
Intelligent Power Manager (IPM) System: Provides innovative power-saving methods that allow the monitor to
shift to a lower power consumption level when on but not in use, saving two-thirds of your monitor energy costs,
reducing emissions and lowering the air conditioning costs of the workplace.
Reduced Magnetic Field Technology: Reduces magnetic and alternating electric field emissions and static
electricity, addressing ergonomic concerns regarding potential risks from extended computer monitor use.
Multiple Frequency Technology: Automatically adjusts monitor to the display card’s scanning frequency, thus
displaying the resolution required.
FullScan Capability: Allows you to use the entire screen area in most resolutions, significantly expanding image
size.
14
User’s Manual
1-14
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
• Signal cable should be completely attached to the computer.
• Check pin assignments and signal timings of the monitor and your display card with respect to
recommended timings and pin assignments.
• If the Macintosh cable adapter is used, check for proper connection or make sure the display card is
Macintosh compatible and that the card is properly seated in the computer.
LED on monitor is not lit
• Power Switch should be in the ON position and power cord should be connected.
Picture is fuzzy or colour looks blotchy
• Adjust Brightness and Contrast Controls or adjust the Moiré Canceler control.
• Access the Degauss Control through OSM controls. Activate the Degauss Control.
CAUTION: A minimum interval of 20 minutes should elapse before the Deguass Control is used a second
time when not switching between modes.
Picture bounces or a wavy pattern is present in the picture
• Move electrical devices that may be causing electrical interference away from the monitor.
• See inside cover of User’s Manual for FCC information.
Edges of the display image are not square
• Use the OSM Geometry Controls to straighten the edges.
• If possible, position the front of the monitor facing east.
Display image is not centered, too small, or too large
• Use the OSM Size and Position Controls to adjust the image.
Thin lines appear on your screen
• Thin lines are normal for an aperture grille CRT and are not a malfunction.
These are shadows from the damper wires used to stabilize the aperture grille and are most noticeable when
the screen’s background is light (usually white).
Black vertical lines are visible on the screen
• Thin vertical black lines on one or both sides of the screen. This minor condition is caused by grille element
overlap which can occur during shipping.
• Position an open white window over the affected area of the screen and maximize the brightness and
contrast controls. This will cause localized heating of the overlap which will clear in a few minutes. Be sure
to readjust the brightness and contrast controls back to the normal viewing level after this procedure.
(no green, orange colour can be seen)
1-15
Diamond Pro 750SB / Diamond Plus 93
SB
15
TCO’99
Diamond Pro 750SB / 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 development of environmentally adapted electronics products.
SB
Why do we have environmentally labelled computers?
In many countries, environmental labelling has become an established method for encouraging the adaptation of
goods and services to the environment. The main problem, as far as computers and other electronics equipment
are concerned, is that environmentally harmful substances are used both in the products and during the manufacturing. Since it has not been possible for the majority of electronics equipment to be recycled in a satisfactory
way, most of these potentially damaging substances sooner or later enter Nature.
There are also other characteristics of a computer, such as energy consumption levels, that are important from the
viewpoints of both the work (Internal) and natural (external) environments. Since all methods of conventional
electricity generation have a negative effect on the environment (acidic and climate-influencing emissions, radioactive waste, etc.), it is vital to conserve energy. Electronics equipment in offices consume an enormous amount of
energy since they are often left running continuously.
What does labelling involve?
This product meets the requirements for the TCO’99 scheme which provides for international and environmental
labelling of personal computers. The labelling scheme was developed as a joint effort by the TCO (The Swedish
Confederation of Professional Employees), Svenska Naturskyddsforeningen (The Swedish Society for Nature
Conservation) and Statens Energimyndighet (The Swedish National Energy Administration).
The requirements cover a wide range of issues: environment, ergonomics, usability, emission of electrical and
magnetic fields, energy consumption and electrical and fire safety.
The environmental demands concern restrictions on the presence and use of heavy metals, brominated and
chlorinated flame retardants, CFCs (freons) and chlorinated solvents, among other things. The product must be
prepared for recycling and the manufacturer is obliged to have an environmental plan which must be adhered to in
each country where the company implements its operational policy. The energy requirements include a demand
that the computer and/or display, after a certain period of inactivity, shall reduce its power consumption to a lower
level in one or more stages. The length of time to reactivate the computer shall be reasonable for the user.
Labelled products must meet strict environmental demands, for example, in respect of the reduction of electric
and magnetic fields, physical and visual ergonomics and good usability.
Environmental Requirements
Flame retardants
Flame retardants are present in printed circuit boards, cables, wires, casings and housings. In turn, they delay the
spread of fire. Up to thirty percent of the plastic in a computer casing can consist of flame retardant substances.
Most flame retardants contain bromine or chloride and these are related to another group of environmental toxins,
PCBs, which are suspected to give rise to severe health effects, including reproductive damage in fisheating birds
and mammals, due to the bioaccumulative* processes. Flame retardants have been found in human blood and
researchers fear that disturbances in foetus development may occur.
16
User’s Manual
1-16
TCO’99
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.
– continued
Lead**
Lead can be found in picture tubes, display screens, solders and capacitors. Lead damages the nervous system
and in higher doses, causes lead poisoning.
TCO’99 requirement permits the inclusion of lead since no replacement has yet been developed.
Cadmium**
Cadmium is present in rechargeable batteries and in the colourgenerating layers of certain computer displays.
Cadmium damages the nervous system and is toxic in high doses.
TCO’99 requirement states that batteries, the colourgenerating layers of display screens and the electrical or
electronics components must not contain any cadmium.
Mercury**
Mercury is sometimes found in batteries, relays and switches, Mercury damages the nervous system and is toxic
in high doses.
TCO’99 requirement states that batteries may not contain any Mercury. It also demands that no mercury is
present in any of the electrical or electronics components associated with the display unit.
CFCs (freons)
CFCs (freons) are sometimes used for washing printed circuit boards. CFCs break down ozone and thereby
damage the ozone layer in the stratosphere, causing increased reception on Earth of ultraviolet light with consequent increased risks of skin cancer (malignant melanoma).
The relevant TCO’99 requirement; Neither CFCs nor HCFCs may be used during the manufacturing and assembly
of the product or its packaging.
* Bio-accumulative is defined as substances which accumulate within living organisms.
** Lead, Cadmium and Mercury are heavy metals which are Bio-accumulative.
To obtain complete information on the environmental criteria document, order from:
TCO Development Unit
SE-114 94 Stockholm
SWEDEN
FAX Number: +46 8 782 92 07
E-mail (Internet): development@tco.se
You may also obtain current information on TCO’99 approved and labelled products by visiting their website at:
http://www.tco-info.com/
Diamond Pro 750SB / Diamond Plus 93
SB
17
1-17
Serial Number Information
Refer to the serial number information shown below.
Manufactured Year :
( Last digit )
Manufactured Month :
January to September 1 to 9
October X
November Y
December Z
Factory Code :
EX.) SERIAL NUMBER LABEL
Model : Dpro750SB
: Dpro750SB-BK
SERIAL NO. :
g g g g g g g g g
Serial number(5 digits)
NPG China Factory (A/B/R ver.) :“Y”
Destination Code :
USA : “A”
Europe : “B”
Australia : “R”
2-1
DISASSEMBLY
• Before you disassemble the set, turn off power and pull out the power plug.
• Use the appropriate screwdrivers that first the screws. If you use screwdriver that does not fit, you may
break the screws.
• Assembly is the opposite process of Disassembly.
• Carefully discharge the CRT anode potential by grounding to coating dag before removing Anode Cap.
Revolving Stand ASSY
1. Turn the monitor CRT face down on a clean static free surface to prevent scratching CRT face.
2. Remove with pulling up a Hooks and lifting a Revolving stand Assy to the upside.
Cabinet Back
1. Remove the two screws (PL-CPTS*4*12*15BF).
HOOK
Revolving stand Assy
screws (PL-CPTS*4*12*15BF)
3-1
CRT BOARD
1. Ten terminals are removed, and six solder is removed.
2. Disconnect the connectors “S201”, “S202”, “S203” and “GND”.
terminals solder
3. Unsolder the wires “White wire”, “Red wire” and “G2”.
S202 S201 S203
Red wire White wire GND G2
3-2
MAIN BOARD
1. Disconnect the connectors “S102”, “S701” and “GND”.
2. Remove the screw (P-#2CRBITS*3*8*15BF).
Screw S701 S101 GND
3. Remove the two screws (P-#2CRBITS*3*8*15BF), screw (PL-CPTS*3*8*15BF)
and screw (PL-CPIMS*4*10*15BF).
Screw Screw
(PL-CPIMS*4*10*15BF) (PL-CPTS*3*8*15BF)
Screw
(P-#2CRBITS*3*8*15BF)
3-3
4. Disconnect the connectors “GND” and “S301”.
5. Remove the screw (P-#2CRBITS*3*8*15BF) and the screw (PL-CPTS*3*8*15BF).
6. Remove the Anode cap from CRT.
NOTE: Carefully discharge the CRT anode by shorting it to ground before removing anode cap.
Screw GND S301 Screw
7. Remove the two screws (PL-CPTS*4*12*15BF) and remove the Chassis Base from Cabinet Front ASSY.
screw (PL-CPTS*4*12*15BF)
3-4
8. Remove the eight screws (PL-CPTS*3*8*15BF) and remove the Main Board from Chassis Base.
screw (PL-CPTS*3*8*15BF)
3-5
ADJUSTMENT PROCEDURES
TABLE OF CONTENTS
1. Adjustment & Inspection Tools............................................................................................ 4-2
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. B+ Confirmation ........................................................................................................ 4-5
8. H-Raster Center Adjustment ............................................................................................. 4-5
9. Preset Adjustment ............................................................................................................. 4-5
10. G2 Voltage Adjustment ................................................................................................... 4-5
11. White Balance Adjustment .............................................................................................. 4-6
Page
12. Focus Adjustment ........................................................................................................... 4-8
13. Purity Adjustment
14. Convergence Adjustment ................................................................................................ 4-9
15. Power saving Function Inspection .................................................................................. 4-9
16. Distortion Adjustment .................................................................................................... 4-10
17. Setting Before Shipment
18. Adjustment Magnetic Field ............................................................................................ 4-13
19. Timing Sheet ................................................................................................................. 4-14
............................................................................................................ 4-8
............................................................................................... 4-12
4-1
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
2. Timing Table (Factory Mode –18 Modes)
MODE RESOLUTION H-SYNC EREQ. V-SYNC FREQ H . POLARITY V . POLARITY
1 VGA400 31.4KHz 70Hz - +
2 VGA640*480 31.4KHz 60Hz - -
3 640*480(75) 37.5KHz 75Hz - -
4 640*480(85) 43.2KHz 85Hz - -
5 800*600(75) 46.8KHz 75Hz + +
6 MACII 49K 49.7KHz 75Hz - -
7 800*600(85) 53.6KHz 85Hz + +
8 1024*768(75) 60.0KHz 75Hz + +
9 1280*1024(60) 64.0KHz 60Hz + +
10 1024*768(85) 68.6KHz 85Hz + +
11 1280*1024(75) 79.9KHz 75Hz + +
12 1280*1024(85) 91.1KHz 85Hz + +
13 1600*1200(75) 93.7KHz 75Hz + +
14 1024*768(60) 48.3KHz 60Hz - -
15 800*600(60) 37.8KHz 60Hz + +
16 MACII 35K 35.0KHz 67Hz - +
17 MAC 1152*870 68.7KHz 75Hz - -
18 VGA720*400(70) 31.5KHz 70Hz - +
3. Normal Condition Definition
(A) Input AC Voltage 110V/60Hz.
(B) Warm up time minimum 30 minutes.
(C) Full White Pattern.
(D) All VR’s adjust to Center Position.
(F) Color temp 9300K
4-2
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
: Contrast
TAB 2) POSITION / SIZE
TAB 3) COLOR ADJUST
TAB 4) DISTORTION
: Left / Right (H.Position)
: Down / Up (V.Position)
: Narrow / Wide (H.Size)
: Short / Tall (V.Size)
VG: Vertical GAIN(Vertical Sub Size)
1: 9300K
2: 8200K
3: 7500K
sRGB: sRGB
5: 5000K
: In / Out (Side Pincushion)
: Left / Right (Pin Balance)
: Tilt (Parallelogram)
: Align (Trapezoid)
: Rotate
: Top Corner
: Bottom Corner
VF : Vertical Focus
: N/A
: Red Gain
: Green Gain
: Blue Gain
: Red Bias
: Green Bias
: Blue Bias
: Brightness
: Contrast
4-3
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