Philips 105S21/25N, 105S21/05N, 105S21/00 User Manual [fr]

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electronic user's manual

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Safety and Troubleshooting Information

Safety Precautions and Maintenance • Troubleshooting • Regulatory Information • Other Related Information

Safety precautions and maintenance

WARNING: Use of controls, adjustments, or procedures other than those specified in this documentation may result in exposure to shock, electrical hazards, and/or mechanical hazards.

Read and follow these instructions when connecting and using your computer monitor:

Disconnect the monitor from the power supply if the monitor is not to be used for an extended period of time.

●

Do not attempt to remove the back cover, as you will be exposed to a shock hazard. The back cover should only be removed by qualified service personnel.

●

Do not place objects on top of the monitor cabinet, objects could fall into vents or cover them and prevent proper cooling of the monitor's electronic devices.

●

To avoid the risk of shock or permanent damage to the set, do not expose the monitor to rain or excessive moisture.

●

Do not use alcohol or ammonia-based liquid to clean the monitor. If necessary, clean with a slightly damp cloth. Disconnect the monitor from the power supply before cleaning.

●

When positioning the monitor, make sure the power plug and outlet are easily accessible.●

Consult a service technician if the monitor does not operate normally when operating instructions of this manual are followed.

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Safety & Troubleshooting

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About This Electronic User's Manual

About This Guide • Other Documents You May Need • Notational Descriptions

About This Guide

This electronic user's guide is intended for anyone who uses the Philips Color Monitor. It describes the monitor's features, setup, operation and all other information, which is the same exact information described in our printed version.

The sections are as follows:

Safety and Troubleshooting Information provides tips and solutions for common problems, and other

related information you may need.

●

About This Electronic User's Manual gives overview of what information are included as well as notation icon descriptions and other documentation you can refer to.

●

Product Information gives an overview of the monitor's features and as well as the technical

specifications for this monitor.

●

Installing Your Monitor describes the initial setup process and gives an overview of how to use the

monitor.

●

On Screen Display provides information on adjusting the settings on your monitor.● Customer Care and Warranty is a list of worldwide Philips consumer information centers along with

the help desk phone numbers and information on the applicable warranty of your product..

●

Glossary provides more information for technical terms.● Download allows users to install the entire manual on their hard drive.●

Frequently Asked Questions provides answers to commonly asked questions.●

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105S Product Information

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• Tube type

Shadow mask, flat square, high contrast, anti-glare, anti-static, anti reflection, light transmission 57%

• Phosphor P22

• Recommended display area 10.6" x 7.95" / 270 x 202 mm

• Maximum display area 11.2" x 8.4" / 284 x 213 mm

SCANNING

• Horizontal scanning 30 - 61KHz

• Vertical scanning 50 - 120 Hz

VIDEO

• Video dot rate 108 MHz

• Input impedance

- Video 75 ohm

- Sync 2.2 kOhm

• Input signal levels 0.7 Vpp

• Sync input signal

Separate sync Composite sync

• Sync polarities Positive and negative

WHITE COLOR TEMPERATURE

Chromaticity CIE coordinates:

• at 9300 K degrees x = 0.283 / y = 0.297

• at 6500 K degrees x = 0.313 / y = 0.329

* These information are subject to change without notice.

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Automatic Power Saving

If you have VESA's DPMS compliance display card or software installed in your PC, the monitor can automatically reduce its power consumption when not in use. And if an input from a keyboard, mouse or other input device is detected, the monitor will automatically "wake up". The following table shows the power consumption and signaling of this automatic power saving features:

Power Management Definition

105S Product Information

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VESA's Mode Video H-sync V-sync Power Used

Power

Saving

(%)

LED color

ON Active Yes Yes < 65W 0 % Green Stand-by Blanked No Yes < 5W 95% Yellow Suspend Blanked Yes No < 5W 95% Yellow

OFF Blanked No No < 5W 95% Yellow

This monitor is ENERGY STAR® compliant. As an ENERGY STAR® Partner, PHILIPS has determined that this product meets the

ENERGY STAR

guidelines for energy efficiency.

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Physical Specifications

• Dimensions

14.1" x 14.6" x 14.9" / 358 x 370 x 379 mm (including base)

14.1"x 13.2" x 14.9" / 358 x 335 x 379 mm (excluding base)

• Weight 12.0 kg

• Power supply 90 - 264 VAC, 50/60Hz

• Temperature (operating) 0° to 40°C / 32° to 104°F

• Temperature (storage) -25° to +65°C / -13° to +149°F

• Relative humidity 5% to 95%

* Resolution 1280 x 1024, standard size, contrast max., brightness 50%, 9300°, full white pattern.

* These information are subject to change without notice.

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Pin Assignment

The 15-pin D-sub connector (male) of the signal cable (IBM systems):

105S Product Information

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No.

Assignment

No.

Assignment

1 Red video input 9 No pin 2 Green video input 10 Logic ground

3 Blue video input 11

Identical output - connected to pin 10

12 Serial data line (SDA)

5 Ground 13 H. Sync / H+V 6 Red video ground 14 V. Sync (VCLK for DDC) 7 Green video ground 15 Data clock line (SCL)

8 Blue video ground

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Views

Follow the links to see various views of the monitor and its components.

Front View Rear View

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105S Product Information

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Installing your Monitor

Front View • Rear View • 6G3B11 Multimedia Base (option) • PCUH411 USB Hub (option)

Front View

Power button switches your monitor on.

OK button which when pressed will take you to the OSD controls

Contrast hotkey. When the UP arrow is pressed, the adjustment controls for the CONTRAST will show up.

Installing your Monitor

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UP and DOWN buttons are used when adjusting the OSD of your monitor

Brightness hotkey. When the RIGHT arrow is pressed, the adjustment controls for BRIGHTNESS will show up.

LEFT and RIGHT buttons, like the UP and DOWN buttons, are also used in adjusting the OSD of your monitor.

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Rear View

Installing your Monitor

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Power in - attach power cable here.1.

Video In - this is a cable which is already attached to your monitor. Connect the other end of the cable to your PC.

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Installing your Monitor

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On-Screen Display

Description of the On-Screen Display • The OSD Tree • The OSD Controls

Description of the On Screen Display

What is the On-Screen Display?

This is a feature in all Philips monitors which allows an end-user to adjust screen performance of monitors directly though an on-screen instruction window. The user interface provides user-friendliness and ease-of-use when operating the monitor.

Basic and simple instruction on the control keys.

On the front controls of your monitor, once you press the

button, the On Screen Display (OSD) Main

Controls window will pop up and you can now start making adjustments to your monitor's various features. Use the

or the keys to make your adjustments within.

On-Screen Display

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The OSD Tree

Below is an overall view of the structure of the On-Screen Display. You can use this as reference when you want to later on work your way around the different adjustments.

On-Screen Display

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On-Screen Display

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On-Screen Display

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Customer Care & Warranty

PLEASE SELECT YOUR COUNTRY/AREA TO READ THE WARRANTY COVERED:

WESTERN EUROPE: Austria • Belgium • Cyprus • Denmark • France • Germany • Greece •

Finland • Ireland • Italy • Luxembourg • the Netherlands • Norway • Portugal • Sweden • Switzerland • Spain • United Kingdom

EASTERN EUROPE: Czech Republic • Hungary • Poland • Russia • Turkey • Bulgaria LATIN AMERICA: Antilles • Argentina • Brazil • Chile • Colombia • Mexico • Paraguay • Peru

• Uruguay • Venezuela

NORTH AMERICA: Canada • USA PACIFIC: Australia • New Zealand ASIA: Bangladesh • China • Hong Kong • India • Indonesia • Japan • Korea • Malaysia •

Pakistan • Philippines • Singapore • Taiwan • Thailand

AFRICA: Morocco • South Africa MIDDLE EAST: Dubai • Egypt

Customer Care and Warranty

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Frequently Asked Questions

1. What does the "Designed for Windows" logo signify?

The "Designed for Windows" logo means your Philips monitor fulfills the requirements and recommendations of the PC9x (97, 98, or 99) System Design Guide and passes stringent WHQL tests.

2. What is USB?

Think of USB as a smart plug for PC peripherals. USB automatically determines resources (like driver software and bus bandwidth) required by peripherals. USB makes necessary resources available without user intervention. Its three main benefits are:

USB eliminates "Case angst," the fear of removing the computer case to install circuit board cards - that often require adjustment of complicated IRQ settings -- for add-on peripherals.

●

USB does away with "port gridlock." Without USB, PCs are normally limited to one printer, two Com port devices (usually a mouse and modem), one Enhanced Parallel Port add-on (scanner or video camera, for example) and a joystick. More and more peripherals for multimedia computers come on the market every day. With USB, up to 127 devices can run simultaneously on a computer.

●

USB permits "hot plug-in." No need to shut down, plug in, reboot and run set up to install peripherals. No need to go through the reverse process to unplug a device. Bottom line: USB transforms today's "Plug-and-Pray" into true Plug-and-Play!

●

3. What is a USB hub?

Think of USB hub as a extension of USB ports. Normally, the PC provides only one or two USB ports. To connect additional USB devices, you need a USB hub.

4. What is Philips Monitors USB hub solution?

Increasingly, monitors include USB hub functionality. But not all users need or want a USB hub. To give users freedom of choice, Philips provides an optional USB hub (type number PCUH411). The USB hub consists of two parts that are normally connected: one is functional, the other aesthetic. The aesthetic element is a removable cover. With the cover removed, the USB hub can be attached to the base or pedestal of monitor. The attached USB hub can be rotated to any position around the monitor's base. With this innovative Philips solution, your USB hub is always within reach for convenient connection and disconnection of USB peripherals.

5. Where can I buy a USB hub for my Philips monitor?

Philips provides an optional USB hub (type number: PCUH411) which can be attached to the base or pedestal of Philips monitors. Contact your dealer/reseller for details.

6. What models are Mac compatible?

All listed Philips monitors are Mac compatible. BUT, you may need an adapter to connect the monitor to your Mac system. Please contact your dealer/reseller for details.

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7. What is TCO?

TCO is a Swedish abbreviation for the Swedish Confederation of Professional Employees.

8. What is MPR?

MPR is a Swedish abbreviation for the Swedish National Board of Measurement and Testing.

9. What are the differences between MPRII, TCO92, TCO95, and TCO99?

In the general hierarchy of standards, TCO99 is the highest level of certification. Next is TCO95, which is "better" than TCO92, which, in turn, is better than MPRII. Below, we compare the standards in each category.

Emissions:

MPRII: Set low emission rules for visual displays. TCO92: Imposed more stringent standards than MPRII. TCO95: Further toughened TCO92 rules. TCO99: Delineated even more severe standards and test procedures than TCO95.

Safety:

MPRII: No requirement. TCO92/95/99: All set requirements.

Energy Saving:

MPRII: No requirement. TCO92: Standby mode < 30W, Off mode < 8W TCO95: Standby mode < 30W, Off mode < 8W TCO99: Standby mode < 15W, Off mode < 5W

Visual Ergonomics:

MPRII: No requirement. TCO92: No requirement. TCO95: Set ergonomic rules including minimum contrast level, flicker and jitter. TCO99: Tightened TCO95 rules.

Ecology:

MPRII: No requirement. TCO92: No requirement. TCO95: Set general ecological standards including recycling preparation, environmental policy and environmental certification. TCO99: Further tightened TCO95 norms.

10. How do I enable the energy saving function?

Frequently Asked Questions

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Go to 'My Computer' and select 'Control Panel' followed by 'Monitor Control.' Select "All default selection' and choose your Philips monitor model from the default driver list. Plug and Play will automatically enable the EPA tick box for you. In DOS or Windows 3.1, you must first make sure your PC supports power saving.

11. What is refresh rate?

"Refresh rate" describes the number of times an entire screen is vertically scanned each second. In other words: If a monitor's refresh rate is 85 Hz, its screen is refreshed - or vertically scanned - 85 times per second. A higher the refresh rate means better image stability and less flicker. A high refresh rate helps users who work long hours in front of a monitor avoid eye fatigue and stress. To change the refresh rate, go into "Start/Settings / Control Pannel / Display / Properties / Setting/Advance/Adaptor" Windows settings of the computer, the monitor will automatically adjust itself to the video card.

12. Why does the picture on the screen appear to flicker?

A low refresh rate or electrical interference typically causes flickering in the picture. Possible solutions include the following:

Verify that the proper drivers are installed for your video card·

●

Make sure that all electrical devices (such as mobile phones) are at least 1m from the monitor● Place the monitor in another physical location away from electrical interference● Adjust the refresh rate to 75hz or higher.●

13. How do I adjust my monitor's resolution?

Available resolutions are determined by the capabilities of your video card and graphic driver. Under Windows '95, you may select the desired available resolution through the 'Display properties/Settings' menu.

14. How can I adjust the size, position and rotation of my screen?

Depending on the model you own, you can use your CustoMax Software, On Screen Display (OSD) or control knobs located on the monitor.

15. What if I get lost when making monitor adjustments?

Simply press OK button then select "Reset to factory settings" to restore all settings.

16. What is LightFrame™?

LightFrame

™

is a Philips technology breakthrough which offers a unique and revolutionary solution for boosting

a monitor 's brightness and sharpness. With LightFrame

, the user experiences TV quality performance for

video or photos without deterioration to the monitor 's performance in windows used for other applications.

17. How does LightFrame

™

work?

LightFrame

™

consists of a software application and an Integrated Circuit (IC) embedded in the monitor.

Together, they boost brightness and sharpness in a user defined window or screen area. Unique LightFrame

technology dramatically improves photo and video display quality.

18. Why is LightFrame

™

important to me?

With LightFrame

™

, selected Philips monitors deliver TV quality video and photo display while maintaining monitor performance for text-based applications. The result is that movies and other video are brighter and livelier; photos are more vibrant and lifelike.

19. Will anyone else have this?

Frequently Asked Questions

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LightFrame™ was invented, developed and patented by Philips. It is a unique feature that you will find exclusively in Philips monitors.

20. Will LightFrame

™

shorten the life of a monitor?

No. Extensive testing has confirmed LightFrame

™

does not adversely affect monitor life. Today's

state-of-the-art Philips monitors employ improved phosphors and are designed for high light output. LightFrame

™

normally highlights photos and videos. Though the peak brightness of the highlighted area is strongly increased, the average brightness - a determining factor for cathode deterioration - is not normally increased. In any case, a special Automatic Beam Limiter (ABL) circuit keeps a monitor 's maximum average brightness within acceptable levels.

21. I get a message warning that my monitor 'may not support LightFrame

™

'. I am certain my monitor

does. What is wrong?

Only a Philips driver can determine if your monitor is equipped with LightFrame™; a generic Windows driver cannot. Install the special Philips driver that came with your monitor. If the warning continues to flash after your

Philips driver is installed, ignore the message. LightFrame

will function properly.

22. What will happen when my system is no longer connected to a LightFrame

™

enabled monitor - for

example, when I take my notebook on the road?

Philips exclusive LightFrame

™

feature requires the combined operation of hardware that resides in your

monitor and software installed on your system. It only works when a monitor with built-in hardware receives commands from system software. Without both the LightFrame

hardware equipped monitor and system

software, the LightFrame

™

does not function.

23. What is "XtraSpace Design" (XSD)?

XSD stands for XtraSpace Design, a Philips breakthrough that reduces a CRT display device's footprint. Philips XSD monitors combine the world's smallest front-to-back footprint with excellent front of screen performance.

24. How did Philips achieve XtraSpace Design?

Philips achieved this breakthrough in reduced footprint CRT display devices through short depth tubes and a focused design process that squeezed every excess millimeter out of XSD monitor desk space requirements.

25. What is Philips monitors' solution for audio?

Not all users need multimedia capabilities. To give users freedom of choice, Philips provides an optional Multimedia Base (type number: 6G3B10). The Multimedia Base replaces the easily removable standard pedestal of the monitor.

26. Which models can be incorporated with the Multimedia Base?

The following models can be incorporated with the Multimedia Base: 109B20, 107B20, 105B20, 105B21, 109S20, 107S20, 107S21, 105S20, 105S21.

27. What are Philips Multimedia Base's specifications?

See detailed Multimedia Base specifications on the product information page.

28. Why is a Multimedia Base better than separate speakers?

The major advantage of the Multimedia Base is its minimal space requirements. In fact, it hardly uses any extra space at all: monitor depth and width are unchanged. Only the monitor's height is increased by only 3 centimeters.

29. Where can I buy a multimedia base to incorporate with my Philips monitor?

Frequently Asked Questions

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Please contact your dealer/reseller for details.

30. What does Auto Calibrate do?

It makes your monitor perform better and last longer. As a monitor becomes older, brightness gradually deteriorates and its colors change. This well-known process effects all monitors. Eventually after a number of years, the monitor's brightness deteriorates to below 50% of its original value. At this stage, the usable life of a monitor is considered ended. Auto Calibrate regularly readjusts color temperature and luminance to their original values.

31. How does Philips Auto Calibrate feature benefit me?

With Auto Calibrate, it takes a monitor's luminance 33 percent longer to deteriorate to the 50 percent level that marks the end of a display device's useful life. Thanks to Auto Calibrate, a monitor with a normal life of 10,000 hours, for example, would last for 13,300 hours, a full one third longer.

32. How does Auto Calibrate work?

During the calibration process, different predefined black and white images are displayed on thescreen. The beam currents of the red, green and blue cannon are accurately measured and compared to the original values stored in the monitor. By readjusting gain values of the individual cannons, deviation is reduced to zero. Default values are stored during production. If the user sets a new color temperature, this new value is saved as the new default value.

33. When should calibration be performed?

The calibration process takes less than six seconds. During this period, different specific images are displayed. After the process is finalized, the original image is redisplayed. Constant re-calibration is not required. Calibration should be performed after the monitor is warmed up. Auto Calibration takes place when a monitor receives a signal indicating an imminent switch to its sleep mode/stand-by mode.

34. Which models of Philips monitors are equipped with Auto Calibrate feature?

Auto Calibrate is currently available in the new 201P, 201B and 109P.

35. The Main Menu displays OSD MAIN MENU LOCKED . Pressing the front control panels hasno effect. How can I unlock this function?

Press and hold the OSD menu key for about 10 seconds until picture displays "OSD MAIN MENU UNLOCKED"

36. My screen shows NO SYNC INPUT , how can I get rid of this?

Check the following for possible solutions:

Bent pins on the video cable

●

Make sure the computer is turned on● Ensure the VGA Cable is properly connected● Ensure the BNC/D-Sub connector on the rear of the monitor is in the correct position, newer models

have this option in the On Screen Display under Input Signal Selection.

●

Video card may be not be a VESA standard (try the monitor with another computer)●

37. Why does my monitor display "Out of Range"?

The video card installed in your computer may be too high for the monitor 's specifications. Please contact your

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computer manufacturer for details on how to lower resolution for your operating system.

38. What is Moiré? Why does my monitor have this wavy phenomenon?

Moiré is a natural effect or phenomenon of CRT that has the appearance of a wavy pattern, which is repetitive and superimposed on the screen as ripple images. These are a few suggestions to help reduce or minimize the effects:

Some monitors have a Moiré cancellation feature, activate it to the on position or adjust the Moiré cancellation function via the OSD on the monitor.

●

Change resolution to the recommended standard for the specific monitor size. ● Change Window viewing pattern/scheme to a pattern where the Moiré is less visible.● Change horizontal and vertical size to optimize the reduction of the Moiré effect.●

39. What is CustoMax?

CustoMax is proprietary Philips software that allows user to control parameter (e.g. Size, Color, Geometry) in place of the buttons on the front of the monitor. To install and run the CustoMax software, you must have a USB compatible system and have a USB connection at the rear of your monitor.

40. My monitor appears to be missing one or more colors. How do I correct this?

If the OSD menu is also missing a color, please contact service for details

●

Set color temperature to 9300 color coordination● Check the video cable for any bent pins● Video card could be defective (try the monitor with another computer).●

41. When I degauss my monitor, it makes a loud noise. Is this normal?

Yes, when degaussing your monitor via the OSD, it is normal for the monitor to make a relatively loud noise. Please be aware that many models will not degauss more than once within any given time period (up to 10 minutes). This is due to the unit having a temperature sensitive resistor. While the unit is degaussing, the resistor increases in value with heat and once it reaches a certain temperature, the resistance will rise and prevent voltage from reaching the degaussing coil. This is what stops the degausser, and this device s resistance will decrease as it cools back off, enabling the degauss function to operate again. This is an intentional design and is an industry standard, not just for Philips monitors. Please be aware that not all models in the Philips range has this manual degauss function. Some models are built with an auto degauss feature which automatically degausses the monitor when it is switched on.

42. How do I adjust the picture on the screen?

Please perform the following to correct the picture image:

Reset your monitor via the OSD menu

●

Adjust the Horz (width) and/or Vert size (height) in the OSD● Change monitor timing to work at the recommended resolution●

43. The edge of the picture on the screen appears to be distorted. How can I correct this?

Please perform the following to correct the picture image:

A magnetic or electrical interference typically causes poor geometry in the picture. Place the monitor in a different physical location

●

Reset the monitor to the factory preset via the OSD menu● Access the Geometry Menu in the OSD of the Monitor and perform the necessary adjustments● Change the monitor timing to the recommended resolution●

44. The picture appears too dim. How can I correct this?

Adjust Brightness and/or Contrast via the monitor 's OSD. Some models have a Video Input Select

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under Advanced Controls in the monitor 's OSD. Most computers require it to be set at .7V. Please review the following for possible solutions:

If the OSD menu is also dim, please contact service for repair● Reset the monitor via the OSD menu● Change the color temperature settings to 9300 color coordination via the OSD menu● Set the Contrast to maximum level (100) and Brightness to middle level (50)●

Video card could be defective (try the monitor with another computer)

45. I have noticed two thin horizontal lines on the screen of my Philips monitor. Is this normal?

This phenomenon can occur with Philips 107P, 109P and 201P monitors and is normal. Your monitor is using an Aperture Grille, which consists of fine vertical wires to align the electron beams with the phosphors on the screen. To prevent these vertical wires from vibrating and to keep them properly aligned with the picture tube, two horizontal damper wires are required. These are located on one-third and on two-third from the top of the screen. The result is that you will see two very thin horizontal lines over your screen since the two wires are casting a slight shadow on the screen surface. You will find these wires (line) in any monitor from Philips and other brands using the Aperture Grille technology.

46. How can I increase the color display of my monitor?

The amount of video memory your video card holds determines the amount of colors that can be displayed on your computer screen. To get the most out of your video card, you will need to either install the latest drivers onto your computer or upgrade the video cards memory. Please check with your computer or video card manufacturer for further details.

47. Why is there no picture on my monitor?

Check the wall socket for power. Verify that there is power by connecting another product.

●

Ensure the power cable is correctly attached to both the wall socket and the monitor.● Check that the power button is switched on.● Unplug the monitor for approx. 1 minute and plug it in again. Switch the monitor back on.●

48. Why is there is no picture on my monitor even though the power LED is yellow/amber?

Reboot your computer while holding the Ctrl key on your computer. If you see any picture during the boot procedure, please verify the settings of your video card (for Windows go to Control Panel and select Display).

●

Check that the video cable is not damaged, bent or that any of the pins in the connector are damaged (please be aware that all VGA connectors have one missing pin). If damaged, replace with a new cable.

●

Check that the cable is attached correctly to the computer.● Press any key on the keyboard to wake-up the computer from power saving mode.●

49. Why is there no picture on my monitor even though the power LED is green?

Verify the Contrast and Brightness setting of the monitor. First press and hold the

5 button to increase

Contrast and then press and hold the

4 button to increase Brightness. These buttons are located on the

front of your monitor.

●

Press both the 5 button and the OK button at the same time to switch input A|B.● Try and repeat step 48 above.●

50. Why does the picture disappear after I press the on/off button quickly?

This is a unique Philips feature designed to preserve the life of your monitor. Please allow 5 seconds between powering off and on your monitor, your picture will then be restored.

Frequently Asked Questions

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Frequently Asked Questions

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Glossary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Autoscan

A microprocessor-based feature of Philips Brilliance monitors is able to detect automatically horizontal and vertical frequencies of input signals with those of the installed video card. An autoscan monitor can thus operate with a wide range of video cards. MultiSync, a registered trademark of NEC, provides a similar function.

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Balanced pincushion

See Geometric distortion

BNC connection

A special construction of connector used in some monitors with higher horizontal scanning frequency. The BNC connection can provide the optimum shielding and matching characteristic impedance of video signal path to ensure the best video performance.

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Glossary

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CE Mark

CE mark is displayed on products per EMC and LV ( low Voltage Device ) directives in compliance with European Community safety, EMI and EMS requirements and is compulsory on products for sale in the European Community.

Color temperature

A way of describing the color of a radiating source in terms of the temperature (in degrees Kelvin) of a black body radiating with the same dominant frequency as the source.

Most Philips monitors offer the possibility of setting the color temperature to any desired value.

Contrast

The ratio between the brightness of the brightest and darkest parts of a picture. The darkest part of a picture is set by the brightness of the unexcited phosphor, which is governed by the degree with which ambient light is reflected. Contrast is therefore reduced in conditions of high ambient light levels. Black Matrix tubes reflect less ambient light so exhibit higher contrast than other tubes.

Convergence error

Bean misalignment causing one or more of the three beams passing through the wrong aperture in the shadow mask and striking a phosphor dot in the wrong triad.

Convergence error is expressed in mm often at three well-defined points on the screen, designated A, B and C (see figure ). Also known as misconvergence.

Glossary

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Points where convergence error is specified.

Convergence-error correction

A method of correcting for convergence error to insure that all three beams land simultaneously in the same triad. This is usually accomplished by means of special convergence-error correction coils in the deflection yoke.

CRT

Cathode-ray tube - the general term for all tubes in which one or more electron beams emitted by a cathode are periodically scanned across a phosphor screen by means of deflection circuitry. A special form of the cathode-ray tube is the TV and monitor picture tube.

CustoMax

Philips proprietary monitor control software that allows users to control parameters (e.g., Size, Color, Geometry) using software running in Windows. CustoMax is compatible with existing VGA cards. See CrystalClear FAQ and USB Bay FAQ.

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DDC (Display Data Channel)

Glossary

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DDC is a communication channel for displays and computers. The DDC feature allows the monitor controller to be automatically configured to make optimal use of the display without manual user interaction. DDC is implemented as part of the new Plug & Play approach introduced into the PC market to increase user friendliness.

The three levels developed for Plug & play are: (1) DDC1, monitor send data to the PC; (2) DDC2B, PC can request information from monitor; and (3) DDC2Bi which is a two-way communication - monitor can be addressed and PC or graphics board can give commands to monitor.

DDC 1/2B

See DDC.

DDC 2Bi

See DDC.

Degaussing

The procedure of demagnetizing the shadow mask and associated metal parts of a picture tube at switch-on to minimize picture distortion. This is usually accomplished by means of a special degaussing coil through which a decaying alternating current is passed to generate an alternating magnetic field that gradually decays to demagnetize the tube. Some monitors offer a manual degaussing facility that can be activated at any time.

Digital control

Microprocessor-based digital control of picture parameters and video modes for complete control of picture settings and modes and instant recall of all settings at the push of a button. This is a very advanced feature that allows the user to switch to any required mode at any instant without having to spend time readjusting the picture. It is currently available in most Philips monitors.

Dot pitch

The shortest distance between two phosphor dots of the same color on the screen. The smaller the dot pitch, the better the resolution of the monitor.

Glossary

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Dot rate

Frequency in MHz of the dot clock. It is a measure of the speed with which data is transferred between the video card and subsequent processing circuitry.

Also known as video dot rate.

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Electromagnetic radiation standards

International standards set to limit electromagnetic emissions from monitors. There are currently two important standards both derived from regulations originally laid down by Swedish authorities.

MPR-II

The standard originally proposed by the Swedish National Board of Measurement and Testing. It set maximum levels of electromagnetic radiation emitted by monitors, and has now been adopted as a world standard. MPR-II defines maximum permitted electrostatic, magnetic and electric field levels measured at a distance of 50 cm from the center of the monitor (see table).

TCO

Glossary

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