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manual should be retained for future reference. 

 

FCC Class B Radio Frequency Interference Statement  

WARNING: (FOR FCC CERTIFIED MODELS) 

 

NOTE: 

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: 

1. Reorient or relocate the receiving antenna. 

2. Increase the separation between the equipment and receiver. 

3. Connect the equipment into an outlet on a circuit different from that to 

which the receiver is connected. 

4. Consult the dealer or an experienced radio/TV technician for help.

 

 
 

NOTICE: 

 

1. The changes or modifications not expressly approved by the party 

responsible for compliance could void the user's authority to operate the 

equipment. 

2. Shielded interface cables and AC power cord, if any, must be used in 

order to comply with the emission limits. 

3. The manufacturer is not responsible for any radio or TV interference 

caused by unauthorized modification to this equipment. It is the  

responsibilities of the user to correct such interference.

 

 
 

WARNING:

 

 

To prevent fire or shock hazard, do not expose the monitor to rain or moisture. 

Dangerously high voltages are present inside the monitor. Do not open the 

cabinet. Refer servicing to qualified personnel only. 

 

Before operating the monitor, please read this manual thoroughly. This 

 

 
 

 

 
 

 

 

 

 

 

 
 

 

  

 

 

Summary of Contents for AL2251W

Page 1: ...ALLATION INSTRUCTIONS 4 CONTROLS AND CONNECTORS 5 ADJUSTING THE VIEWING ANGLE 6 OPERATING INSTRUCTIONS 7 GENERAL INSTRUCTIONS 7 HOW TO ADJUST A SETTING 9 ADJUSTING THE PICTURE 10 11 PLUG AND PLAY 12 TECHNICAL SUPPORT FAQ 13 14 ERROR MESSAGE POSSIBLE SOLUTION 15 APPENDIX 16 SPECIFICATIONS 16 17 FACTORY PRESET TIMING TABLE 18 CONNECTOR PIN ASSIGNMENT 19 ...

Page 2: ...rence by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation between the equipment and receiver 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio TV technician for help NOTICE 1 The changes or modifications not expressly approved by the part...

Page 3: ...you are not sure of the type of power supplied to your home consult your dealer or local power company z The monitor is equipped with a three pronged grounded plug a plug with a third grounding pin This plug will fit only into a grounded power outlet as a safety feature If your outlet does not accommodate the three wire plug have an electrician install the correct outlet or ground the appliance sa...

Page 4: ...f the LCD screen an afterimage of the previous screen may remain after switching the image when the same image is displayed for hours In this case the screen is recovered slowly by changing the image or turning off the Power Switch for hours BEFORE YOU OPERATE THE MONITOR FEATURES 55 87cm 22 TFT Color LCD Monitor Crisp Clear Display for Windows Recommened Resolutions 1680 X 1050 60Hz Dual Input DV...

Page 5: ...s follows Method a Place the wall mounting bracket on the underside of the monitor Attach to monitor through the holes in the bracket and on the underside of monitor Attach 10cm X 10cm as shown in figure a Place four screws into the holes as shown and tighten Place four screws into the holes as shown and tighten 2 Re connect the cable For instructions on how to attach the monitor to the wall see t...

Page 6: ...nly Dual Input Model Connect one end of the 24 pin DVI cable to the back of the monitor and connect the other end to the computer s DVI port 4 Connect the audio cable between the monitor s audio input and the PC s audio output green port 5 Plug the power cable of your monitor into a nearby outlet Plug the other end of the power cord into the power adapter 6 Turn on your monitor and computer Figure...

Page 7: ... Figure 2 NOTES Do not touch the LCD screen when you change the angle It may cause damage or break the LCD screen Careful attention is required not to catch your fingers or hands when you change the angle ADJUSTING THE VIEWING ANGLE You can adjust the angle of the monitor from 5 to 15 but please notice that the rear obliquity of the monitor must not be over 15 when you adjust it otherwise the mach...

Page 8: ...ng these settings the picture can be adjusted to your personal preferences The power cord should be connected Connect the video cable from the monitor to the video card Press the power button to turn on the monitor position The power indicator will light up Figure 3 External Control Button EXTERNAL CONTROLS 1 Volume 4 MENU ENTER 2 Volume 5 Auto Adjust Key Exit 3 Power Key Power Indicator ...

Page 9: ...XIT OSD menu 2 When OSD menu is in off status press this button for 2 seconds to activate the Auto Adjustment function The Auto Adjustment function is used to set the HPos VPos Clock and Focus NOTES Do not install the monitor in a location near heat sources such as radiators or air ducts or in a place subject to direct sunlight or excessive dust or mechanical vibration or shock Save the original s...

Page 10: ...the MENU button to select the function that you want to adjust 4 Press or to change the settings of the current function 5 To exit and save select the exit function If you want to adjust any other function repeat steps 2 4 I Analog OnlyModel II Dual Input Model Analog Signal Input HOW TO ADJUST A SETTING ...

Page 11: ...tness Adjusts the background brightness of the screen image Focus Adjusts picture Focus available in Analog mode only Clock Adjusts picture Clock available in Analog mode only H Position Adjust picture Focus available in Analog mode only V Position Adjust picture Clock available in Analog mode only N A Warm Set the color temperature to warm white N A Cool Set the color temperature to cool white Us...

Page 12: ...og input Model N A Auto Config Auto Adjust the H V Position Focus and Clock of picture N A Analog Select input signal from analog D Sub only Dual Input Model N A Digital Select input signal from digital DVI N A Information Show the resolution H V frequency and input port of current iput timing N A Reset CleareacholdstatusofAuto configuration N A Exit Save user adjustment and OSD disappear ...

Page 13: ...minimum No 18 AWG type SJT or SVT three conductors flexible cord One end terminates with a grounding type attachment plug rated 10A 250V CEE 22 male configuration The other end terminates with a molded on type connector body rated 10A 250V having standard CEE 22 female configuration Please note that power supply cord needs to use VDE 0602 0625 0821 approval power cord in European counties This mon...

Page 14: ...s that may cause electrical interference The power LED is ON orange but there s no video or no picture Computer Power Switch should be in the ON position Computer Video Card should be snugly seated in its slot Make sure monitor s video cable is properly connected to the computer Inspect monitor s video cable and make sure none of the pins are bent Make sure computer is operational by hitting the C...

Page 15: ...shut down mode Adjust CLOCK and FOCUS or perform hot key AUTO key CLOCK pixel frequency controls the number of pixels scanned by one horizontal sweep If the frequency is not correct the screen shows vertical stripes and the picture has not correct width FOCUS adjusts the phase of the pixel clock signal With a wrong phase adjustment the picture has horizontal disturbances in light picture For FOCUS...

Page 16: ...able is properly connected If the connector is loose tighten the connector s screws 2 Check the signal cable connection pins for damage INPUT NOT SUPPORT Your computer has been set to unsuitable display mode set the computer to display mode given in the following table See page 18 ...

Page 17: ...rs 16 2M Colors Dot Clock 146 25MHz Max Resolution 1680 x 1050 60Hz Plug Play VESA DDC2B TM ON Mode 49W OFF Mode 1W D Sub 15pin Input Connector DVI D 24pin DVI w HDCP Analog 0 7Vp p standard 75 OHM Positive Input Video Signal Digital signal Only Dual Input Model Maximum Screen Size Horizontal 473mm Vertical 296mm Power Source 100 240VAC 47 63Hz Environmental Considerations Operating Temp 0 to 40 C...

Page 18: ...t signal Selection Only Dual Input Model Language Auto configuration only Analog input Model Warm Color Cool Color RGB Color temperature Reset OSD position timeout Display information Exit Power Consumption Maximum 49 Watts Audio Output Rated Power 1 5W rms Per channel Regulatory Compliance CUL FCC VCCI CCC MPR II CE TÜV GS TCO 03 UL ISO13406 2 ...

Page 19: ...68 60Hz 1344X806 48 363 N 60 004 N 65 000 1024X768 70Hz 1328X806 56 476 N 70 069 N 75 000 1024X768 75Hz 1312X800 60 023 P 75 029 P 78 750 1280X1024 60Hz 1688X1066 63 981 P 60 020 P 108 000 1280 1024 75Hz 1688X1066 79 976 P 75 025 P 135 000 1680X1050 60Hz 2240X1089 65 29 N 59 95 P 146 25 1600X1200 60Hz 2160X1250 75 P 60 P 162 IBM MODES Horizontal Vertical 720X400 70Hz 900X449 31 469 N 70 087 P 28 3...

Page 20: ...odel 24 Pin Color Display Signal Cable Pin Meaning Pin Meaning 1 TMDS Data2 13 TMDS Data3 2 TMDS Data2 14 5V Power 3 TMDS Data 2 4 Shield 15 GND return for 5V hsync vsync 4 TMDS Data4 16 Hot Plug Detect 5 TMDS Data4 17 TMDS Data0 6 DDC Clock 18 TMDS Data0 7 DDC Data 19 TMDS Data 0 5 Shield 8 Analogue Vertical Sync 20 TMDS Data5 9 TMDS Data1 21 TMDS Data5 10 TMDS Data1 22 TMDS Clock Shield 11 TMDS ...

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