User manual BENQ FP751

Benq FP751 LCD Color Monitor 17.0" (43.18cm) LCD Panel Size User's Manual Benq LCD Color Monitor User's Guide Copyright Copyright © 2002 by Banq Corporation (formerly Acer Communications & Multimedia Inc.). All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Benq Corporation. Banq Corporation makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any particular purpose. Further, Banq Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Banq Corporation to notify any person of such revision or changes. 1. 2. The AC adapter isolates this equipment from the AC supply. Unplug this product from the wall outlet before cleaning. Do not use liquid or aerosol cleaners. Use a soft cloth to clean the monitor housing and a tape to stick dust and fingerprints on the screen panel. Slots and openings on the back or top of the cabinet are provided for ventilation. They must not be blocked or covered. This product should never be placed near or over a radiator or heat register, or in a built-in installation unless proper ventilation is provided. This product should be operated from the type of power indicated on the marking label. If you are not sure of the type of power available, consult your dealer or local power company. Never push objects of any kind, or spill liquid of any kind into this product. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltages or other risks. If any above mentioned misuse or other accident (dropping, mis-operations) occurs, contact qualified service personnel for servicing. The power supply cord serves as a power disconnect device for pluggable equipment. The socket outlet shall be installed near the equipment and shall be easily accessible. Disclaimer Safety Instructions 3. 4. 5. 6. 7. English 1 Benq LCD Color Monitor User's Guide Table of Contents Unpacking ............................................................................................................ 3 Views of the Monitor .......................................................................................... 4 Front View ....................................................................................................................................................... 4 Back View (1) .................................................................................................................................................. 4 Back View (2): Removal of rear cover and base cover ......................................................................... 5 Installation ........................................................................................................... 6 Hardware Installation .................................................................................................................................... 6 Monitor Security Lock Installation ............................................................................................................. 8 USB Installation (Optional) .......................................................................................................................... 8 Software Installation ...................................................................................................................................... 9 Adjusting the Monitor ...................................................................................... 35 Look at the Control Panel .........................................................................................................................35 Hot Key Mode ..............................................................................................................................................35 Main Menu Mode ..........................................................................................................................................36 Troubleshooting ................................................................................................ 41 Frequently Asked Questions (FAQ) ........................................................................................................41 Pixel errors ....................................................................................................................................................42 Need More Help? .........................................................................................................................................42 Supported operating modes ...................................................43 Specifications ..................................................................................................... 44 Appendix: An Introduction to LCD Technology ........................................... 45 Principles of LCD Technology ...................................................................................................................45 The TFT panel ...............................................................................................................................................45 Important LCD parameters .......................................................................................................................46 Display errors ................................................................................................................................................47 Comparison of CRT & LCD monitors ....................................................................................................48 Summary ......................................................................................................................................................... 48 English 2 Benq LCD Color Monitor User's Guide Unpacking Please check you have the following items. If they are missing or are damaged, please contact the dealer immediately at which you purchased the good. LCD monitor Quick Start Guide CD-ROM Power cord Power Adaptor English 3 Benq LCD Color Monitor User's Guide Views of the Monitor Front View Back View (1) English 4 Benq LCD Color Monitor User's Guide Back View (2): Removal of rear cover and base cover 1. Power outlet 3. Video Cable 2. Audio jack 4. Kensington lock English 5 Benq LCD Color Monitor User's Guide Installation Hardware Installation A. Make sure that the computer and monitor's power are both turned off. Please follow the steps to install your LCD monitor. 1. Lay the monitor on the desk. Take off the rear cover. 2. Then take off the base cover. 3. Connect the power cord to your LCD monitor. then connect audio cable to the Audio Input of Benq LCD monitor. English 6 Benq LCD Color Monitor User's Guide 4. Put base cover back. 5. Put the rear cover back. B. Connect the audio cable to your computer. C. Connect the signal cable, which is directly attached to the monitor, to the VGA output of the graphics card on the computer. D. Connect the power cord at the back of the monitor to an AC power socket. Please make sure that the socket is not blocked or covered, so you can disconnect the unit from AC supply if you need to. Your monitor is equipped with an automatic power supply for a voltage range from 100 to 240 Volt at a frequency of 50 to 60 Hz. Be sure that your local power is within the supported range. If you are unsure, ask your electricity supplier. English 7 Benq LCD Color Monitor User's Guide Monitor Security Lock Installation The monitor can be secured to your desk or any other fixed object with Kensington lock security product. The cable can be attached to a slot located on the rear of your monitor. 1. 2. 3. Insert the lock in the slot located on the rear of the monitor. Turn the key to lock the Security Lock. Remove the key and store it in a safe place. The Kensington lock is not Benq Accessory. It cannot be ordered from Benq. Contact your reseller for more information. USB Installation (Optional) A USB-Hub is integrated in the base of your monitor pedestal. USB connectors automate peripheral connection by using plug&paly installation procedures. 1. 2. Connect your USB Hub to your computer with USB cable. Connect USB compatible devices such as a keyboard, mouse and so on to any of 2 downstream connectors. English 8 Benq LCD Color Monitor User's Guide Adjusting the Monitor Look at the Control Panel There are 4 keys & one wheel for user's control including "Power", "iKey", "Exit", "Enter" and a wheel.The following descriptions are the introduction of these keys & fly wheel. 1. 2. 3. 4. 5. "Power": Turn the power on or off. "iKey" : Adjust vertical position, phase, horizontal position and pixel clock automatically. "Exit" key: Back to main menus, save menu or exist OSD menu without saving. Hot key for Audio volume adjustment. "Enter" key: Enter sub-menus, select items or save items. "Wheel": For left / right adjustment. Hot key for Brightness/Contrast adjustment. Hot Key Mode Contrast hot-key 1. 2. Roll the fly wheel left to enter the Contrast hot-key mode. Roll the fly wheel to make adjustment. The scale can be adjusted from maximum (100) to minimum (0). Press the "Exit" to save and leave OSD operation. 3. Brightness hot-key 1. 2. Roll the fly wheel right to enter the Brightness hot-key mode. Roll the fly wheel to make adjustment. The scale can be adjust from maximum (100) to minimum (0). Press the "Exit" to save and leave OSD operation. 3. English 35 Benq LCD Color Monitor User's Guide Speaker Volume hot-key 1. 2. Press "Enter" to enter Speaker Volume hot-key mode. Roll the fly wheel to make adjustment. The scale can be adjust from maximum (100) to minimum (0). Press the "Exit" to save and leave OSD operation. 3. Main Menu Mode Control Functions Available in Main Menu 1. Brightness Press "Enter" to enter adjustment menu. Use fly wheel to adjust brightness and then press "Exit" to return to main menu. Or you can roll the fly wheel right to find this function. 2. Contrast Press "Enter" to enter adjustment menu. Use fly wheel to adjust contrast ratio and then press "Exit" to return to main menu. Or you can roll the fly wheel left to find this function. English 36 Benq LCD Color Monitor User's Guide 3. Horizontal Position Press "Enter" to enter adjustment menu. Use fly wheel to adjust horizontal display position and then press "Exit" to return to main menu. 4. Vertical Position Press "Enter" to enter adjustment menu. Use fly wheel to adjust vertical display position and then press "Exit" to return to main menu. 5. Phase Press "Enter" to enter adjustment menu. Use fly wheel to adjust phase and then press "Exit" to return to main menu. English 37 Benq LCD Color Monitor User's Guide 6. Clock Press "Enter" to enter adjustment menu. Use fly wheel to adjust pixel clock and then press "Exit" to return to main menu. 7. Color Press "Enter" to enter selection menu. Use fly wheel to choose color temperature or enter user define sub menu to adjust RGB. Press "Exit" to return to main menu. 8. Languages Press "Enter" to enter selection menu. Use fly wheel to select a language and then press "Exit" to return to main menu. De: Deutsch En: English Es: Español Fr: Français It: Italiano Ja: Japanese English 38 Benq LCD Color Monitor User's Guide 9. Recall Press "Enter" to enter confirmation menu. Use fly wheel to make decision and then press "Exit" to return to main menu. 10. OSD Time Press "Enter" to enter adjustment menu. Use fly wheel to adjust time of OSD operation and then press "Exit" to return to main menu. 11. Volume Press "Enter" to enter adjustment menu. Use fly wheel to adjust volume of speaker and then press "Exit" to return to main menu. English 39 Benq LCD Color Monitor User's Guide 12. OSD Position Press "Enter" to enter adjustment menu. Use fly wheel to select horizontal or vertical adjustment then press "Enter" to make adjustment. Use fly wheel to adjust horizontal or vertical display position and then press "Exit" twice to return to main menu. 13. Information Press "Enter" to show display information (resolution, horizontal frequency and vertical frequency). Press "Exit" to return to main menu. English 40 Benq LCD Color Monitor User's Guide Troubleshooting Frequently Asked Questions (FAQ) The image is blurred: Read the chapter, Installation/Adjustment and then select the correct resolution, refresh rate and make adjustments based on these instructions. Do you use a VGA extension cable? Remove the extension cable for the test. Is the image now in focus? If not, optimize the image working on the description in the chapter, Installation/Adjustment. It is normal for blurring to occur due to conduction losses in extension cables. You can minimize these losses by using an extension cable with better conduction quality or with a built-in booster. Does the blurring only occur at resolutions lower than the native (maximum) resolution? Read the chapter Installation/Adjustment. Select the native resolution. Pixel errors can be seen: One of several pixels are permanently black, one or more pixels are permanently white, one or more pixels are permanently red, green, blue or another colour. Read the chapter Pixel error rates. The image has a faulty colour appearance: It has a yellow, blue or pink appearance. On the monitor press the "Enter" button and using the Fly-wheel move to the "colour settings" menu. Select the "Recall" item and press "Enter". If the image is still not correct and the OSD also has a fault colour appearance, then one of the three primary colours is missing in the signal input. Now check the VGA cable contacts. If any pins are bent or broken off, then contact your dealer or read the chapter, Additional Help, Repairs & Service. No image can be seen: Is the prompt on the display illuminated in green? If the LED is illuminated in green, then press the "Exit" button on the monitor to access the On Screen Display. If the message "Not supported Mode" appears there, read the chapter Installation/Adjustment. Is the prompt on the display illuminated in orange? If the LED is illuminated in orange, then the power management mode is active. Press a button on the computer keyboard or move the mouse. If that does not help, then check the VGA cable contacts. If any pins are bent or broken off, then contact your dealer or read the chapter, Additional Help, Repairs & Service. Is the prompt on the display not illuminated at all? Check the power supply mains socket, the external power supply and the mains switch. English 41 Benq LCD Color Monitor User's Guide The image is or distorted, flashes or flickers: Read the chapter, Installation/Adjustment and then select the correct resolution, refresh rate and make adjustments based on these instructions. The image is displaced in one direction: Read the chapter, Installation/Adjustment and then select the correct resolution, refresh rate and make adjustments based on these instructions. Pixel errors Due to the technology used to build LCD-modules, pixel errors are unavoidable. A standard 1024 x 768 display has 786,432 pixels. Each pixel consists of three subpixels (red, green and blue), which means there are 2,359,296 subpixels. This is also the number of driver transistors needed. If you wanted to make sure that every transistor on an LC display is working properly, i.e. that there are no pixel failures, an enormous amount of waste would be produced and the price would also be exorbitant. Error rates have to be specified in order to produce LCD panels for a fair price. These error rates are given to us by the panel manufacturers. Need More Help? If your problems remain after checking this manual, please contact your place of purchase or e-mail us at: DPLservice@banq.com English 42 Benq LCD Color Monitor User's Guide Supported operating modes Incoming display mode(Input timing) Resolution Horizontal Frequency (KHz) 31.47(P) 31.47(N) 31.47(N) 35.00(N) 37.86(N) 37.50(N) 37.88(P) 48.08(P) 46.86(P) 49.72(N) 48.36(N) 56.48(N) 60.02(P) 60.24(N) 67.50(P) 68.68(N) 61.80(N) 71.81(N) 64.00(P) 75.83(N) 80.00(P) 81.18(N) Vertical Frequency (Hz) 70.08(N) 70.08(P) 60.00(N) 67.00(N) 72.80(N) 75.00(N) 60.32(P) 72.19(P) 75.00(P) 74.55(N) 60.00(N) 70.10(N) 75.00(P) 74.93(N) 75.00(P) 75.06(N) 66.00(N) 76.14(N) 60.00(P) 71.53(N) 75.00(P) 76.16(N) Dot Clock Frequency (MHz) 25.17 28.32 25.18 30.24 31.5 31.5 40.00 50.00 49.50 57.29 65.00 75.00 78.75 80.00 108.00 100.00 92.94 108.00 108.00 128.00 135.00 135.09 Remark Multi-scan operation Actual display resolution 1280X943 640x350 *720x400 640x480 640x480 640x480 640x480 800x600 800x600 *800x600 832X624 *1024x768 1024x768 *1024x768 1024X768 1152x864 *1152x870 1152x900 *1152x900 1280x1024 1280x1024 *1280x1024 *1280x1024 DOS DOS DOS Macintosh VESA VESA VESA VESA VESA Macintosh VESA VESA VESA Macintosh VESA Macintoch SUN 66 SUN VESA IBM1 VESA SPARC2 1280X1024 full screen hModes, which are not listed in the above table, may not be supported. For an optimal picture it is recommended to choose a mode listed in the table. hYou have 22 available modes compatible with Windows. hIt can happen that the image is disrupted. This can occur as a result of a signal frequency from the VGA card, which does not correspond with the usual standard. This is not, however, an error. You can improve this situation by altering an automatic setting or by manually changing the phase setting and the pixel frequency from the "Geometry" menu. hIf you switch off the monitor, interference lines can occur on your screen. But do not be concerned about this, as it is normal. hTo extend the service life of the product, we recommend that you use your computer's power management function. English 43 Benq LCD Color Monitor User's Guide Specifications Model Display type Viewable diagonal Native (maximum) resolution Colors Contrast / Brightness Response time Viewing angle (left/right, up/down) Dot Pitch Line frequency Image frequency Image checks 17.0", active, TFT 43.18 cm 1280 x 1024 16.7 million 400:1 / 250 cd/m² 45 ms 60/60,45/70 0.264 mm 31.47 - 60.24 kHz Multi- frequency monitor 56.25 - 75.0 Hz modes within these parameters Digital, Screen OSD Technology, iKey (automatic image setting) mains switch, 2 buttons, one fly-wheel OSD, iKey. Contrast, brightness, vert. & hor. image position, phase, pixel clock, color balance, color palette, choice of language (6 language OSD), OSD position, status indicator VESA DPMS, EPA 50 Watt Max < 3 Watt RGB analog 0.7 Vpp/75 Ohm positive TTL separate 15-pin mini D-sub cable 5 °C - 40 °C 20% - 85% TCO 99 (Optional), TÜV/Ergonomics, CSA, TÜV/GS, IEC950, FCC Class B, DSNF, ISO 13406-2, VCCI, UL, CB Report, CE, C-Tick, BSMI Automatic switched mode power supply, 90-264 V, 47-63Hz 422 x 451 x 207.97 mm 6.8 kg FP751 Controls iScreen functions Power Management max. power consumption Power saving mode Input signal Synchronisation Signal connection Temperature (operating) Air humidity (operating) Certifications Operating voltage Dimensions (W x H x D) Weight English 44 Benq LCD Color Monitor User's Guide Appendix: An Introduction to LCD Technology Principles of LCD Technology The functionality of LCD (Liquid Crystal Display) screens is based on the special physical properties of liquid crystals. Their rod shaped molecules arrange themselves similarly to the molecules of crystals - always uniformly and in one particular direction. Yet liquid crystals are not set in this orientation, but behave like a liquid: They can be manipulated by applying an electric voltage. The layers of the liquid crystal molecules can therefore be longitudinal or diagonal to the polarising direction of the light and thereby have a varying effect on the course of light waves. LIQUID CRYSTALS POLARISE INCIDENT LIGHT An LC display consists of two polarising filters, a control layer, the respective colour filters and the liquid crystal layer. The light from a background lamp hits an initial polarisation membrane so that only a specific plane of polarisation of the light reaches the liquid crystal layer. Without any external electrical influence the liquid crystal molecules arrange themselves in a screw-like shape between the two vertically aligned polarising filters and the directional structure imposed as a result. The light follows this orientation and is rotated by 90 degrees. The second polarising filter only allows through light with this rotated polarisation. The light valve is open - as a result the controlled pixel lights up. If an electrical voltage is applied, the liquid crystal molecules orientate themselves along the field lines. The 90' screw is lifted up, the LC molecules appear parallel to the incident light and allow it to pass through without altering the polarising direction. The unrotated light hits the second, rotated polarising filter and is blocked. As a result the corresponding pixel remains dark. The intensity of the departing, visible light can be controlled by means of the voltage applied to the crystal layer and the polarised light rotated to a greater or lesser extent as a result. The TFT panel A. The standard TFT panel With TFT displays, also called active matrix, the light transmitting capacity of each pixel is in each case controlled by a transistor. The pixels can therefore be operated individually and addressed very quickly, which in turn guarantees perfect display even of moving images. With high-resolution LCDs well over two million pixels (three colour dots for the primary colours red, green and blue per pixel) have to be controlled. The voltage is continuously on so that the image does not have to be rebuilt constantly. The great advantage of this is that LC displays do not flicker, even when they are controlled at low refresh frequencies (e.g. at 60 Hz). Because faulty transistors can occur during production, pixel errors resulting from this are unavoidable. B. The super TFT panel The super TFT panel works according to the same physical principle. A significantly increased viewing angle can be created through more precise production and through slightly brighter pixels. This, however, is partly at the expense of the gray level resolution. English 45 Benq LCD Color Monitor User's Guide C. Comparison of standard and super TFT display Standard h good gray level resolution hF satisfactory viewing angle Field of applications: hImage processing hmedical field hStandard workstation hBanks (confidential area) Super h very good viewing angle hsatisfactory gray level resolution Field of applications: his several people are working at one screen. hStandard workstation hPresentation tasks hBanks (public area) Important LCD parameters A. Viewing angle The viewing angle is the display's visible field. If one were to imagine a vertical line in the centre of the image and to pivot up and down and to the right and to the left from that point, then that is the viewing angle.Working ergonomically requires a viewing angle of at least 60°/60° (right/left) horizontally and 45°/45° vertically (up/down). If only two values are specified for horizontal and vertical, the values for right and left, and for horizontal and vertical are added together. If this were the case then this would provide a viewing angle of 120° horizontally and 90° vertically. B. Contrast Contrast is the ratio between the light intensity of the brightest and the darkest point of an image. High contrast values improve readability and ergonomics. A display should in all instances attain contrast values of 100:1. This is a point on which LCD monitors are clearly superior to monitors. C. Response time The response time is the time, which a TFT cell requires to switch on and switch off. For standard applications a response time of a maximum of 70 ms (milliseconds) is sufficient. If a more rapid image build-up is required (e.g. the multimedia field), then values of a maximum of 30 ms are required. D. Brightness Brightness is the emitted luminous power over a specified area. Brightness is another point, on which LCD monitors are superior to CRT devices. Traditional monitors create approx. 80 to 100 cd/m² (candela per meter square). In the case of LC displays, values below 150 cm/m² are not acceptable. English 46 Benq LCD Color Monitor User's Guide Display errors A. Pixel errors Pixel errors are (unfortunately) unavoidable with today's production methods, if you want to manufacture displays at an economically sensible price. A display with a resolution of 1024x768 dots therefore has 786432 pixels. Each pixel consists of the three sub-pixels for red, green and blue. That makes 2,359,296 individual control transistors. It can occur during production that one or several transistors is defective, which means that pixel errors occur, in which a sub-pixel does not light up at all or does so all of the time. If you were to accept the same error rate as in the case of the strip mask, for which two horizontal lines are completely disrupted, then you would end up with a 2.6 percent error rate. The accepted error rates for LC displays are far lower, however. If, for example, you were to accept a tolerance of three permitted pixel errors per display, the you would end up with an error rate of 0.0038 per thousand. B. Blurred image You can also end up with blurred images with LC displays indeed whenever you depart from the native resolution. A display is built for a set resolution, smaller resolutions can only be displayed interpolated. If, for example, you want to display a resolution of 800x600 on a display with a native resolution of 1024x768, then each horizontal dot would have to display 1.28 dots of the resolution. This doesn't work of course and so intermediate values are calculated and this distorts the original image. C. Multifrequency as opposed to Multiscan LC displays require a digital control and because currently there is still no valid standard for a digital control, for the sake of compatibility there is a tendency to revert to the standard VGA connection. This is also ideal for monitors, as they require an analog signal. The image digitally created in the computer is converted in the graphics card into an analog signal and thus directly controls a CRT monitor. If, however, you use the analog signal of the VGA connection for a digital LC display, then transducer electronics at the input of the display must cater for conversion back into digital signals. Two problems occur with this: 1. conversion losses: The image is not so optimal as compared with direct, digital control. It can otherwise be the case that subsequent adjustments are necessary every couple of months on a regular basis. This is generally executed via the OSD or an automatic function) 2. Limitation to specific operating modes: Nowadays A CRT monitor is usually a multiscan monitor, which means it can be operated within the limits of its horizontal and vertical frequency, even in non-standard modes. An LCD monitor, in contrast, is a multi-frequency monitor, which means it is only guaranteed to work together with specific modes (see list in the user's guide). English 47 Benq LCD Color Monitor User's Guide Comparison of CRT & LCD monitors CRT monitor Advantages: Flat panel display Advantages: hMultiscan monitor. hsame quality in all resolutions. hproven connector standard hanalog (infinite) colour depth hno pixel errors halso large proportions hinexpensive hno geometry errors hno convergence errors hexcellent brightness and contrast values hflicker-free hinsensitive to magnetic and electric fields hlow power consumption hlow heat build-up hsmall footprint hlow weight Disadvantages: Disadvantages: hgeometry errors possible hconvergence errors possible hlimited brightness and contrast values honly flicker-free from 72 Hz hsensitive to magnetic and electric fields hrelatively high power consumption hhigh heat build-up hlarger footprint hhigh weight hMulti-frequency monitor. hbest quality only in its native resolution. hAbsence of standards hlimited colour depth hpixel errors hno large proportions hexpensive Summary Ultimately, it cannot be said that LCD monitors are superior to CRT monitors or vice-versa either. Rather when choosing which device to use you need to weigh up the advantages and disadvantages in order to decide which technology to use. In the public and presentational arena, LC displays are definitely preferable over CRT monitors. In relation to the display workstation order, the small footprint is also an important argument and in this respect more favours flat panel displays. On the other hand, when it comes to particular colour depth, or you need a large viewable diagonal, the choice of a CRT monitor is still unrivalled. English 48