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S1931a, S2031/S2031a, 
S2231/S2231a, S2331/ S2331a, S2321a,
LCD Monitors 
User Guide 
                                                                                                                                                                                                                                                                                                                                                                                                              
                    
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                            © 2010 Hewlett-Packard Development Company, L.P.    Microsoft, Windows, and Windows Vista are either trademarks or registered trademarks of Microsoft  Corporation in the United States and/or other countries.    The only warranties for HP products and services are set forth in the express warranty statements  accompanying such products and services. Nothing herein should be construed as constituting an  additional warranty. HP shall not be liable for technical or editorial errors or omissions
                    
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                            Important Safety Instructions    1. Please read all the following instructions carefully and keep this manual for future reference.  2. Unplug this monitor before cleaning. Do not use liquids or aerosol cleaners to clean the surface of  the LCD. Use a damp cloth for cleaning.  3. Do not push the surface of the LCD screen with your hands or any hard article. It may cause  damage to the circuit or liquid crystal molecules inside the monitor.   4. Do not expose the equipment to water, rain or m
                    
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                        Chapter I. Introduction    1.1 Features   Multilingual OSD adjustment    Compatible with IBM VGA, extended VGA, VESA VGA, SVGA, XGA, and SXGA modes    Wide range of applicable voltages (AC 100-240V 50/60Hz ) enables direct use without any  setting.    Plug-and-play VESA DDC1/ 2B Standard. Compatible with Windows 9x / 2000 / xp / Vista  operation systems    1.2 Check list  Please make sure the following items are included with your LCD monitor;   The monitor (and the pedestal)   Lower stand   Pow
                    
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                        Chapter II. Installation    2.1 Install the pedestal    Please follow the steps illustrated below to install the pedestal.             Step 1 Step 2   3                                                                                                                                                                                                                                                                                                                                                            
                    
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                        2.2 Connect your monitor to your computer    1. Power off and unplug your computer.     2. Connect the 15-Pin or 24-Pin ends of the signal cable to the VGA or DVI port of your monitor and  the VGA or DVI OUT jack on the back of your computer. Secure the screws on both ends of the  signal cable.   3. Connect the power cords of your computer and monitor to the nearest electrical outlet.   4. Power on your computer and monitor. If your monitor displays an image, the installation has been  successfu
                    
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                        2.3 Disconnect the pedestal     1. Press the clip button on the pedestal and remove the pedestal from the stand.       2. Press the clip button on the stand and remove the pedestal from your LCD monitor.       Note: This monitor uses VESA-compatible 100mmx100mm installation ports.   5                                                                                                                                                                                                                       
                    
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                        Chapter III. Monitor overview    Overview of front panel controls       1. Menu Button (MENU)  2. Select Button  -(minus)  3. Select Button +(plus)    4. OK Button (OK)  5. Power Button (POWER)  6                                                                                                                                                                                                                                                                                                                
                    
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                        Chapter IV. Operational Instruction      4.1 Power ON/OFF Switch  Press this button to power on/off your monitor. Note: The ON/OFF switch does not disconnect your  monitor from the main voltage. To completely disconnect the main voltage, please remove the  power plug from the socket.    4.2 Power indicator  This indicator lights up in blue when the monitor operates normally. If the monitor runs in  power-saving mode, this indicator changes to amber. When the monitor is turned off, this indicator
                    
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                        4.4 OSD operational instructions       Icon Main menu option Submenu option Note    When the monitor is connected to two    Switch the video  active and valid video sources, switching  input (only  between the video input sources is  applicable to some  available. Switching the video input  models)  signal sources may take you several  seconds.     To adjust the brightness level of the  Brightness     screen.      To adjust the contrast level of the  Contrast     screen.   To adjust the image on
                    
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                            To select the color displayed on the  screen. The factory default setting is  Color  “6500 K” or “Custom color”, depending  on the model of your monitor.     To select and adjust the color range:   R – to set the level of red   Custom color  G – to set the level of green   B – to set the level of blue     To set the color of the screen to comply  with color standards used in the imaging  sRGB   industry.      To select the language displayed on the  Languages  OSD menu. The factory default s
                    
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                           The resolution, refresh rate and frequency  information will be displayed when the OSD  Management  main menu is accessed. Please select “On”  Mode Display  (Continued)     or “Off” as the factory default on-off setting,  depending on the model of your monitor.     The operational status of your monitor will be  displayed when you power on your monitor.  To select the positions where the status  information is displayed:  Top   Monitor status Middle   Bottom   Off   The factory default settin
                    
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                           When the monitor is connected to two  active and valid video sources, select one  Default video  of them as the default video input.   input   The default signal input is DVI.   The change you made will be activated  after your computer is restarted.     To select and display important information  Information   about your monitor.     Restore factory  settings  The factory default settings will be restored.        11                                                                            
                    
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                        Chapter V. Technical Information     5.1 Factory preset display mode  S1931a Model   Criteria  Resolution Horizontal frequency Vertical frequency   1 640X480 @60 Hz 31.469 59.94  2 720X400 @70 Hz 31.469 70.087  3 800X600 @60 Hz 37.879 60.317  4 1024X768 @60 Hz 48.363 60.004  5 1280X720 @60 Hz 45 60  6 1280X960 @ 60 Hz 60 60.00  7 1280X1024 @60 Hz 63.98 60.02  47.71 59.79  8 1366X768 @60Hz      S2031 / S2031a Models  Criteria  Resolution Horizontal frequency Vertical frequency   1 640X480 @60 Hz 
                    
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                        5.2 Product specifications    S1931a Model      Size 18.5” wide screen   Max. resolution 1366x  768 @ 60 Hz  Recommended resolution 1366x768 @ 60 Hz  Horizontal frequency  24-83 kHz  Vertical frequency  50-76 Hz  Viewable size 409.8x 230.4 mm  Viewable angle  170  Pitching angle -5º to 15º  Pixel frequency  170 MHz  OSD functions  Brightness, Contrast, Image Control, Languages, Color,  Management, Information, Restore Factory Setting, Exit, OSD  Control  Size (Packing)  362x 130 x 533 mm  Net we
                    
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                        S2031 / S2031a Models    Size 20” wide screen   Max. resolution 1600 x 900 @ 60 Hz  Recommended resolution 1600 x 900 @ 60 Hz  Horizontal frequency  24-83 kHz  Vertical frequency  50-76 Hz  Viewable size 442.8x 249.08 mm  Viewable angle  170  Pitching angle -5º to 15º  Pixel frequency  170 MHz  OSD functions  Brightness, Contrast, Image Control, Languages, Color,  Management, Information, Restore Factory Setting, Exit, OSD  Control  Size (Packing)  362x 130 x 533 mm  Net weight/ Gross weight 4.0
                    
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                        S2231 / S2231a Models    Size 21.5” wide screen   Max resolution 1920 X 1080 @60 Hz  Recommended resolution 1920 X 1080 @60 Hz  Horizontal frequency  24-94 kHz  Vertical frequency  50-76 Hz  Viewable size 476.64*268.11 mm  Pitching angle -5º to 15º  Viewable angle  160  Pixel frequency  170 MHz  OSD functions  Brightness, Contrast, Image Control, Languages, Color,  Management, Information, Restore Factory Setting, Exit, OSD  Control  Size (Packing)  572*120*383 mm  Net weight/ Gross weight 4.12 
                    
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                        S2331 / Models  S2331a    Size 23” wide screen   Max. resolution 1920 X 1080 @60 Hz  Recommended resolution 1920 X 1080 @60 Hz  Horizontal frequency  24-94 kHz  Vertical frequency  50-76 Hz  Viewable size 509.18 × 286.42 mm  Pitching angle -5º to 15º  Viewable angle  160  Pixel frequency  170 MHz  OSD functions  Brightness, Contrast, Image Control, Languages, Color,  Management, Information, Restore Factory Setting, Exit,  OSD Control  Size (Packing)  405 x 610 x 122 mm  Net weight/ Gross weight
                    
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                        S2321a Model Size 23” wide screen   Max. resolution 1920 X 1080 @60 Hz  Recommended resolution 1920 X 1080 @60 Hz  Horizontal frequency  24-94 kHz  Vertical frequency  50-76 Hz  Viewable size 509.18 × 286.42 mm  Pitching angle -5º to 15º  Viewable angle  160  Pixel frequency  170 MHz  OSD functions  Brightness, Contrast, Image Control, Languages, Color,  Management, Information, Restore Factory Setting, Exit,  OSD Control  Size (Packing)  405 x 610 x 122 mm  Net weight/ Gross weight 4.67 KG / 6.
                    
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                        5.3 Signal cable connector     PIN No.  Signal name  1 TMDS Data 2-  2 TMDS Data 2+  3 TMDS Data 2/4 Shield   4 NC  5 NC  6 DDC Clock  7 DDC Data  8 NC  9 TMDS Data 1-  10 TMDS Data 1+  11 TMDS Data 1/3 Shield   12 NC  13 NC  14 +5V Power supply  15 Testing cable   16 Hot-swap testing  17 TMDS Data 0-  18 TMDS Data 0+  19 TMDS Data 0/5 Shield   20 NC  21 NC  22 TMDS Clock Shield  23 TMDS Clock +  24 TMDS Clock -      DVI Interface     18