Dell S2421HGF User Manual Download

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Troubleshooting

Common problems

The following table contains general information about common monitor problems
you might encounter and the possible solutions:

Common

symptoms

What you

experience

Possible solutions

No Video/Power
LED off

No picture

• Ensure that the video cable

connecting the monitor and the
computer is properly connected and
secure.

• Verify that the power outlet is

functioning properly using any other
electrical equipment.

• Ensure that the power button is

pressed fully.

• Ensure that the correct input source is

selected in the

Input Source

menu.

No Video/Power
LED on

No picture or no
brightness

• Increase brightness & contrast

controls via OSD.

• Perform monitor self-test feature

check.

• Check for bent or broken pins in the

video cable connector.

• Run the built-in diagnostics.

• Ensure that the correct input source is

selected in the

Input Source

menu.

Poor Focus

Picture is fuzzy,
blurry, or ghosting

• Eliminate video extension cables.

• Reset the monitor to factory settings.

• Change the video resolution to the

correct aspect ratio.

Shaky/Jittery
Video

Wavy picture or
fine movement

• Reset the monitor to factory settings.

• Check environmental factors.

• Relocate the monitor and test in

another room.

Summary of Contents for S2421HGF

Page 1: ...Dell S2421HGF Monitor User s Guide Model S2421HGF Regulatory model S2421HGFb ...

Page 2: ...r loss of data if instructions are not followed WARNING A WARNING indicates a potential for property damage personal injury or death Copyright 2020 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners 2020 05 Rev A01 ...

Page 3: ... 13 Supported video modes 13 Preset display modes 14 Electrical specifications 14 Physical characteristics 15 Environmental characteristics 16 Power management modes 17 Pin assignments 18 LCD monitor quality and pixel policy 19 Ergonomics 20 Handling and moving your display 22 Maintenance guidelines 23 Cleaning your monitor 23 Setting up the monitor 24 Connecting the stand 24 Connecting your monit...

Page 4: ...nd 29 VESA wall mounting optional 29 Operating the monitor 31 Power on the monitor 31 Using the joystick control 31 Using the rear panel controls 32 Accessing the menu system 34 OSD warning message 45 Tilt 49 Vertical extension 49 Troubleshooting 50 Self test 50 Built in diagnostics 51 Common problems 52 Product specific problems 56 Appendix 57 FCC notices U S only and other regulatory information...

Page 5: ...ways be sure that your monitor is electrically rated to operate with the AC power available in your location Keep the monitor in room temperature Excessive cold or hot conditions can have an adverse effect on the liquid crystal of the display Do not subject the monitor to severe vibration or high impact conditions For example do not place the monitor inside a car trunk Unplug the monitor when it i...

Page 6: ... more information see Contact Dell NOTE Some items may be optional and may not ship with your monitor Some features may not be available in certain countries NOTE If you are connecting a stand that you purchased from any other source follow the set up instructions that were included with the stand Component image Component description Display Stand riser Stand base ...

Page 7: ...About your monitor 7 Power cable varies by country HDMI cable Quick Setup Guide Safety Environmental and Regulatory Information ...

Page 8: ... capability if supported by your system On Screen Display OSD adjustments for ease of set up and screen optimization Power and OSD buttons lock Security lock slot Stand lock 0 3 W standby power when in sleep mode Optimize eye comfort with a flicker free screen WARNING The possible long term effects of blue light emission from the monitor may cause damage to the eyes including eye fatigue digital e...

Page 9: ...About your monitor 9 Identifying parts and controls Front view Label Description Use 1 Power On Off button with LED indicator To turn the monitor on or off Side view ...

Page 10: ...compatible wall mount kit 100 mm x 100 mm 4 Regulatory label Lists the regulatory approvals 5 Stand release button Releases stand from the monitor 6 Barcode serial number and Service Tag label Refer to this label if you need to contact Dell for technical support The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your com...

Page 11: ... using a M3 x 6 mm screw screw not included 4 HDMI port HDMI 1 Connect your computer with the HDMI cable shipped with your monitor 5 HDMI port HDMI 2 Connect your computer with the HDMI cable shipped with your monitor 6 DisplayPort Connect your computer with the DisplayPort cable 7 Headphone out port Connect the headphones CAUTION Increasing the audio output beyond 50 on the volume control or equa...

Page 12: ...put 350 cd m typical Contrast ratio 1000 to 1 typical Faceplate coating Haze 25 3H Backlight White LED edgelight system Response time 1 ms gray to gray in Extreme Mode 2 ms gray to gray in Super Fast Mode 4 ms gray to gray in Fast Mode The 1 ms gray to gray mode is achievable in the Extreme mode to reduce visible motion blur and increased image responsiveness However this may introduce some slight...

Page 13: ...1080p Color depth 16 7 million colors Color gamut 72 NTSC CIE 1931 72 and CIE 1976 83 Connectivity 1 x DisplayPort version 1 2 2 x HDMI ports version 1 4 1 x Headphone out port Border width edge of monitor to active area Top Left Right Bottom 5 4 mm 5 4 mm 5 4 mm 19 8 mm Adjustability Height adjustable stand Tilt 0 to 100 mm 5 to 21 Dell Display Manager compatibility Easy Arrange and other key fea...

Page 14: ...monitor supports AMD FreeSync Premium Electrical specifications Video input signals HDMI 1 4 DisplayPort 1 2 600 mV for each differential line 100 Ω input impedance per differential pair AC input voltage frequency current 100 VAC to 240 VAC 50 Hz or 60 Hz 3 Hz 1 A typical Inrush current 120 V 30 A Max at 0 C cold start 240 V 60 A Max at 0 C cold start 31 5 59 9 25 2 37 5 75 0 31 5 31 5 70 1 28 3 3...

Page 15: ...your Dell monitor Height extended 451 6 mm 17 78 in Height compressed 351 6 mm 13 84 in Width 537 8 mm 21 17 in Depth 189 4 mm 7 46 in Height 321 6 mm 12 66 in Width 537 8 mm 21 17 in Depth 65 6 mm 2 58 in Height extended 366 3 mm 14 42 in Height compressed 319 0 mm 12 56 in Width 221 6 mm 8 72 in Depth 189 4 mm 7 46 in Weight with packaging 7 4 kg 16 25 lb Weight with stand assembly and cables 5 ...

Page 16: ...4 F Non operating Storage 20 C to 60 C 4 F to 140 F Shipping 20 C to 60 C 4 F to 140 F Operating 10 to 80 non condensing Non operating Storage 5 to 90 non condensing Shipping 5 to 90 non condensing Operating 5000 m 16404 ft maximum Non operating 12192 m 40000 ft maximum 153 54 BTU hour maximum 68 24 BTU hour typical Model S2421HGF Compliant standards Temperature Humidity Altitude Thermal dissipati...

Page 17: ...reathing Less than 0 3 W Switch off Off Less than 0 3 W Power Consumption Pon 16 3 W Total Energy Consumption TEC 51 3 kWh Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the monitor Maximum power consumption with max luminance This document is informational only and reflects laboratory performance Your product may perform differently depending on the s...

Page 18: ...umber 20 pin side of the connected signal cable 1 ML3 n 2 GND 3 ML3 p 4 ML2 n 5 GND 6 ML2 p 7 ML1 n 8 GND 9 ML1 p 10 ML0 n 11 GND 12 ML0 p 13 GND 14 GND 15 AUX p 16 GND 17 AUX n 18 Hot Plug Detect 19 Re PWR 20 3 3 V DP_PWR DisplayPort connector ...

Page 19: ...SHIELD 12 TMDS CLOCK 13 CEC 14 Reserved N C on device 15 DDC CLOCK SCL 16 DDC DATA SDA 17 DDC CEC Ground 18 5 V POWER 19 HOT PLUG DETECT LCD monitor quality and pixel policy During the LCD Monitor manufacturing process it is not uncommon for one or more pixels to become fixed in an unchanging state which are hard to see and do not affect the display quality or usability For more information on Del...

Page 20: ...m your monitor and gaze at a distant object at 20 feet away for at least 20 seconds during the breaks 5 Perform stretches to relieve tension in the neck arm back and shoulders during the breaks Make sure that the monitor screen is at eye level or slightly lower when you are sitting in front of the monitor Adjust the tilt of the monitor its contrast and brightness settings Adjust the ambient lighti...

Page 21: ...and or get up and walk around at regular intervals Keep the area under your desk clear of obstructions and cables or power cords that may interfere with comfortable seating or present a potential trip hazard monitor screen at or below eye level monitor and keyboard positioned directly in front of the user feet flat on the floor wrists relaxed and flat ...

Page 22: ...all cables from the monitor Place the monitor in the original box with the original packing materials Hold the bottom edge and the side of the monitor firmly without applying excessive pressure when lifting or moving the monitor When lifting or moving the monitor ensure the screen is facing away from you and do not press on the display area to avoid any scratches or damage When transporting the mo...

Page 23: ...clean your anti static screen lightly dampen a soft clean cloth with water If possible use a special screen cleaning tissue or solution suitable for the anti static coating Do not use benzene thinner ammonia abrasive cleaners or compressed air Use a lightly dampened warm cloth to clean the monitor Avoid using detergent of any kind as some detergents leave a milky film on the monitor If you notice ...

Page 24: ...from any other source follow the set up instructions that were included with the stand To attach the monitor stand 1 Follow the instructions on the flaps of carton to remove the stand from the top cushion that secures it 2 Remove the stand base and stand riser from the packaging cushion 3 Align and place the stand riser on the stand base 4 Open the screw handle at the bottom of the stand base and ...

Page 25: ...nitor 25 6 Open the protective cover on the monitor to access the VESA slot on the monitor 7 Slide the tabs on the stand riser into the slots on the display back cover and lower the stand assembly to snap it into place ...

Page 26: ...tor 8 Hold the stand riser and lift the monitor carefully then place it on a flat surface NOTE Hold the stand riser firmly when lifting the monitor to avoid any accidental damage 9 Lift the protective cover from the monitor ...

Page 27: ...s NOTE Route the cables through the cable management slot before connecting them NOTE Do not connect all cables to the computer at the same time NOTE The images are for the purpose of illustration only Appearance of the computer may vary To connect your monitor to the computer 1 Turn Off your computer and disconnect the power cable 2 Connect the HDMI or DisplayPort cable from your monitor to the c...

Page 28: ...g your monitor using Kensington lock optional The security lock slot is located at the bottom of the monitor See Security lock slot For more information on using the Kensington lock purchased separately see the documentation that is shipped with the lock Secure your monitor to a table using the Kensington security lock NOTE The image is for the purpose of illustration only Appearance of the lock m...

Page 29: ... you purchased from any other source follow the set up instructions that were included with the stand To remove the stand 1 Place the monitor on a soft cloth or cushion 2 Press and hold the stand release button 3 Lift the stand up and away from the monitor VESA wall mounting optional Screw dimension M4 x 10 mm Refer to the instructions that come with the VESA compatible wall mounting kit 1 Place t...

Page 30: ...cover 4 Attach the mounting bracket from the wall mounting kit to the monitor 5 Mount the monitor on the wall For more information see the documentation that shipped with the wall mounting kit NOTE For use only with UL or CSA or GS listed wall mount bracket with minimum weight or load bearing capacity of 13 6 kg ...

Page 31: ...adjustments 1 Press the joystick button to launch the OSD main menu 2 Move the joystick up down left right to toggle between options 3 Press the joystick button again to confirm the settings and exit Joystick Description When the OSD menu is on press the button to confirm the selection or save the settings When the OSD menu is off press the button to launch the OSD main menu See Accessing the menu...

Page 32: ...ove left to exit from the submenu Increases right or decreases left the parameters of selected menu item For 2 way up and down directional navigation Toggles between the menu items Increases up or decreases down the parameters of selected menu item Rear panel button Description 1 Menu Use the MENU button to launch the On Screen Display OSD See Accessing the menu system 2 Exit To exit the OSD main ...

Page 33: ...g the joystick button the OSD Status Bar appears to let you know the current settings of some OSD functions 4 Shortcut key Dark Stabilizer To launch the Dark Stabilizer menu 5 Shortcut key Brightness Contrast To directly access the Brightness Contrast adjustment sliders ...

Page 34: ...your visual gameplay experience Preset Modes Allows you to choose from a list of preset color modes Standard Loads the monitor s default color settings This is the default preset mode FPS Loads color settings ideal for First Person Shooter FPS games MOBA RTS Loads color settings ideal for Multiplayer Online Battle Arena MOBA and Real Time Strategy RTS games ...

Page 35: ...rom the monitor may cause personal injury such as digital eye strain eye fatigue and damage to the eyes Using monitor for extended periods of time may also cause pain in parts of body such as neck arm back and shoulder For more information see Ergonomics Warm Presents colors at lower color temperatures The screen appears warmer with a red yellow tint Cool Presents colors at higher color temperatur...

Page 36: ... shows the time elapsed since the game starts Select an option from the time interval list to keep you aware of the remaining time Frame Rate Selecting On allows you to display the current frames per second when playing games The higher the rate the smoother the motion appears Display Alignment Activating the function may help ensure the perfect alignment of the video contents from multiple displa...

Page 37: ...mage Move the joystick down to increase the purple shade of the video image NOTE The Hue adjustment is available only when you select FPS MOBA RTS SPORTS or RPG preset mode Saturation This feature can adjust the color saturation of the video image Use the joystick to adjust the saturation level from 0 to 100 Move the joystick up to increase the colorful appearance of the video image Move the joyst...

Page 38: ...vel or move the joystick down to decrease the brightness level min 0 max 100 Contrast Adjusts the Brightness first and then adjust the Contrast only if further adjustment is necessary Move the joystick up to increase the contrast level or move the joystick down to decrease the contrast level min 0 max 100 The Contrast function adjusts the degree of difference between darkness and lightness on the ...

Page 39: ...the joystick button to confirm the selection HDMI 1 Select the HDMI 1 or HDMI 2 input when you are using the HDMI connector Press the joystick button to confirm the selection HDMI 2 Auto Select Turn on the function to allow the monitor to automatically scan for available input sources Press the joystick button to confirm the selection Reset Input Source Resets all settings under the Input Source m...

Page 40: ...to RGB Select this option if your monitor is connected to a computer or media player using the DP or HDMI cable YPbPr Select this option if your media player supports only YPbPr output Sharpness This feature can make the image look sharper or softer Move the joystick to adjust the sharpness level from 0 to 100 Reset Display Resets all settings under the Display menu to the factory defaults ...

Page 41: ...y defaults Menu Select this option to adjust the settings of the OSD such as the languages of the OSD the amount of time the menu remains on screen and so on Language Sets the OSD display to one of the eight languages English Spanish French German Brazilian Portuguese Russian Simplified Chinese or Japanese Transparency Select this option to change the menu transparency by moving the joystick up or...

Page 42: ...er the Menu menu to the factory defaults Personalize Shortcut Key 1 Allows you to choose a feature from Preset Modes Game Enhance Mode Dark Stabilizer Brightness Contrast Input Source Aspect Ratio or Volume and set it as a shortcut key Shortcut Key 2 Shortcut Key 3 Power Button LED Allows you to set the power LED indicator on or off to save energy Reset Personalization Resets all settings under th...

Page 43: ...splays the monitor s current settings DDC CI DDC CI Display Data Channel Command Interface allows your monitor parameters brightness color balance and etc to be adjustable via the software on your computer You can disable this feature by selecting Off Enable this feature for best user experience and optimum performance of your monitor ...

Page 44: ... by selecting On Firmware Displays the firmware version of your monitor Service Tag Displays the service tag of your monitor This string is required when you look for phone support check your warranty status update drivers on Dell s website etc Reset Others Resets all settings under the Others menu to the factory defaults Factory Reset Restore all preset values to the factory default settings ...

Page 45: ...rizontal and Vertical frequency ranges addressable by this monitor Recommended mode is 1920 x 1080 NOTE The message may be slightly different according to the connected input signal You will see the following message before the DDC CI function is disabled When the monitor goes into power save mode the following message appears Activate the computer and wake up the monitor to gain access to the OSD...

Page 46: ...ightly different according to the connected input signal If either HDMI or DP input is selected and the corresponding cable is not connected a floating dialog box as shown below appears NOTE The message may be slightly different according to the connected input signal When Factory Reset is selected the following message appears See Troubleshooting for more information ...

Page 47: ...pears on the screen 2 Select one of the following options Menu Buttons Choose this option to lock all OSD menu buttons except the Power button Power Button Choose this option to lock only the Power button Menu Power Buttons Choose this option to lock all the buttons on the rear panel control To unlock the button s press and hold Button 5 for four seconds until a menu appears on the screen Select t...

Page 48: ...tings 2 Click Advanced display settings 3 Click the dropdown list of Resolution and select 1920 x 1080 4 Click Apply If you do not see 1920 x 1080 as an option you may need to update your graphics driver Depending on your computer complete one of the following procedures If you have a Dell desktop or portable computer Go to http www dell com support enter your service tag and download the latest d...

Page 49: ...ng a stand that you purchased from any other source follow the set up instructions that were included with the stand Tilt With the stand attached to the monitor you can tilt the monitor for the most comfortable viewing angle NOTE The stand is not factory installed Vertical extension NOTE The stand extends vertically up to 100 mm The figure below illustrates how to extend the stand vertically ...

Page 50: ...ve all digital cables from the back of computer 3 Turn on the monitor NOTE A dialog box should appear on screen against a black background if the monitor cannot sense a video signal and is working correctly While in self test mode the power LED lights white default color NOTE This box also appears during normal system operation if the video cable is disconnected or damaged 4 This box also appears ...

Page 51: ...hlight the Diagnostics option and press the joystick button to start the diagnostics A gray screen is displayed 4 Observe if the screen has any defects or abnormalities 5 Toggle the joystick once again until a red screen is displayed 6 Observe if the screen has any defects or abnormalities 7 Repeat steps 5 and 6 until the screen displays green blue black and white colors Note any abnormalities or ...

Page 52: ...at the correct input source is selected in the Input Source menu No Video Power LED on No picture or no brightness Increase brightness contrast controls via OSD Perform monitor self test feature check Check for bent or broken pins in the video cable connector Run the built in diagnostics Ensure that the correct input source is selected in the Input Source menu Poor Focus Picture is fuzzy blurry or...

Page 53: ...ogy For more information on Dell Monitor Quality and Pixel Policy see Dell Support site at www dell com pixelguidelines Brightness Problems Picture too dim or too bright Reset the monitor to factory settings Adjust brightness contrast controls via OSD Geometric Distortion Screen not centered correctly Reset the monitor to factory settings Horizontal Vertical Lines Screen has one or more lines Rese...

Page 54: ...m any troubleshooting steps Contact Dell immediately Intermittent Problems Monitor malfunctions on off Ensure that the video cable connecting the monitor to the computer is connected properly and is secure Reset the monitor to factory settings Perform monitor self test feature check to determine if the intermittent problem occurs in self test mode Missing Color Picture missing color Perform monito...

Page 55: ... the Input Color Format to PC RGB or YPbPr in the Display menu OSD Run the built in diagnostics Image retention from a static image left on the monitor for a long period of time Faint shadow from the static image displayed appears on the screen Use the Power Management feature to turn off the monitor at all times when not in use for more information see Power management modes Alternatively use a d...

Page 56: ... Press and hold the fourth button the Brightness Contrast shortcut key by default below the joystick button for 4 seconds to unlock No Input Signal when user controls are pressed No picture the LED light is white Check the signal source Ensure the computer is not in the power saving mode by moving the mouse or pressing any key on the keyboard Check whether the signal cable is plugged in properly R...

Page 57: ...latory information see the regulatory compliance website located at www dell com regulatory_compliance Contact Dell For customers in the United States call 800 WWW DELL 800 999 3355 NOTE If you do not have an active Internet connection you can find contact information on your purchase invoice packing slip bill or Dell product catalog Dell provides several online and telephone based support and ser...

Page 58: ...04 4 8 122 02 4 8 298 03 11 73 468 91 18 46 181 02 7 13 351 63 13 84 198 03 7 8 184 51 7 26 451 63 17 78 130 5 12 221 61 8 72 527 04 20 75 5 38 0 21 296 46 11 67 5 37 0 21 5 38 0 21 19 8 0 78 366 33 14 42 25 94 1 02 189 44 7 46 S2421HGF Outline Dimension Tilt Z 0 Unit mm inch Dimension Nominal Drawing Not to scale Z 45 8 1 8 Z 43 8 1 72 M4X10 x4 ...

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