Dell P2421DC User Manual Download Page 67

Page: 67 / 71

Troubleshooting

│

Image retention from
a static image left
on the monitor for a
long period of time

∞

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 dynamically changing screensaver.

Video Ghosting or
Overshooting

∞

Change the

Response Time

in the

Display

OSD to

Fast

Normal

depending on your application and

usage.

Summary of Contents for P2421DC

Page 1: ...Monitor Model P2421DC Regulatory Model P2421DCc Dell 24 USB C Monitor P2421DC User s Guide ...

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 03 Rev A01 ...

Page 3: ...on specifications 14 Supported video modes 15 Preset display modes 15 MST Multi Stream Transport MST Modes 16 Electrical specifications 16 Physical characteristics 17 Environmental characteristics 18 Power management modes 19 Plug and play capability 25 LCD monitor quality and pixel policy 25 Maintenance guidelines 25 Cleaning your monitor 25 Setting up the monitor 26 Attaching the stand 26 ...

Page 4: ...ting your monitor 34 Power on the monitor 34 USB C charging options 35 Using the control buttons 35 OSD controls 36 Using the On Screen Display OSD menu 37 Accessing the OSD menu 37 Menu and Power button lock 49 OSD warning messages 51 Setting up your monitor 55 Setting the maximum resolution 55 If you have a Dell desktop or a Dell portable computer with internet access 55 If you have a non Dell d...

Page 5: ...f Test 61 Built in diagnostics 62 Setting USB C Prioritization when USB C Charging is set to On During Power Off 64 Common problems 65 Product specific problems 68 Appendix 70 Safety Instructions 70 FCC notices U S Only and other regulatory information70 Contacting Dell 70 ...

Page 6: ...nsure that you have received all the components and see Contacting Dell for more information if something is missing NOTE Some items may be optional and may not ship with your monitor Some features or media may not be available in certain countries Monitor Stand riser Stand base Power cable varies by countries ...

Page 7: ...About your monitor 7 DP 1 2 cable 1 8 m length USB Type C cable C to C 1 8 m length Cable Tie Quick Setup Guide Safety and Regulatory Information ...

Page 8: ...layPort and HDMI Equipped with 4 USB downstream ports Single USB Type C to supply power to compatible notebook while receiving video signal Plug and play capability if supported by your system On Screen Display OSD adjustments for ease of set up and screen optimization Software and documentation media includes an Information File INF Image Color Matching File ICM and product documentation Security...

Page 9: ...Front view 1 2 Control buttons Label Description Use 1 Function buttons Use the function buttons to adjust items in the OSD menu For more information see Using the control buttons 2 Power On Off button Use the power button to turn the monitor On and Off ...

Page 10: ...aheen Business Park Limerick Ireland for EU Only CAN ICES 3 B NMB 3 B This device complies with part 15 of the FCC Rules Opera on is subject to the following two condi ons 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired opera on XXXXX R33037 RoHS 䝕 ޛ 100V 2 5 A 50 60 Hz X X X X X X X X IS 13252...

Page 11: ... 11 Side view 1 Label Description Use 1 USB 3 0 downstream port x 2 Connect your USB device NOTE You can only use this port after you have connected the USB Type C cable to the computer and USB Type C port on the monitor ...

Page 12: ... with your monitor 6 DisplayPort out DP output for MST multi stream transport capable monitor DP 1 1 monitor can only be connected as the last monitor in the MST chain To enable MST refer to instruction on section Connecting the monitor for DP Multi Stream Transport MST function NOTE Remove the rubber plug when use DP out port 7 USB Type C port You can attach the monitor to PC using a USB type C c...

Page 13: ...mage Diagonal Horizontal Active Area Vertical Active Area Area 604 5 mm 23 8 in 526 85 mm 20 75 in 296 35 mm 11 67 in 156132 00 mm2 242 16 in 2 Pixel pitch 0 2058 mm x 0 2058 mm Pixel per inch PPI 123 Viewing angle Horizontal Vertical 178 typical 178 typical Luminance output 300 cd m typical Contrast ratio 1000 to 1 typical Faceplate coating Anti glare with 3H hardness Haze 25 Backlight LED edgeli...

Page 14: ...5 4 mm 5 5 mm 20 3 mm Adjustability Height adjustable stand Tilt Swivel Pivot 130 mm 5 to 21 45 to 45 90 to 90 Dell display manager compatibility Easy Arrange and other key features Security Security lock slot cable lock optional purchase Resolution specifications Model P2421DC Horizontal scan range 29 kHz to 113 kHz Vertical scan range 49 Hz to 75 Hz automatic Maximum preset resolution 2560 x 144...

Page 15: ...640 x 480 31 5 59 9 25 2 VESA 640 x 480 37 5 75 0 31 5 VESA 800 x 600 37 9 60 3 40 0 VESA 800 x 600 46 9 75 0 49 5 VESA 1024 x 768 48 4 60 0 65 0 VESA 1024 x 768 60 0 75 0 78 8 VESA 1152 x 864 67 5 75 0 108 0 VESA 1280 x 768 47 8 59 9 79 5 VESA 1280 x 1024 64 0 60 0 108 0 VESA 1280 x 1024 79 9 75 0 135 0 VESA 1600 x 1200 75 0 60 0 162 0 VESA 1680 x 1050 65 3 60 0 146 3 VESA 1920 x 1080 67 5 60 0 1...

Page 16: ...ons Model P2421DC Video input signals HDMI 1 4 600 mV for each differential line 100 ohm input impedance per differential pair DP 1 2 600 mV for each differential line 100 ohm input impedance per differential pair USB Type C 600 mV for each differential line 90 ohm input impedance per differential pair AC input voltage frequency current 100 VAC to 240 VAC 50 Hz or 60 Hz 3 Hz 2 5 A typical Inrush c...

Page 17: ...ensions without stand Height 322 1 mm 12 68 in Width 537 8 mm 21 17 in Depth 42 7 mm 1 68 in Stand dimensions Height extended 400 8 mm 15 78 in Height compressed 353 4 mm 13 91 in Width 206 0 mm 8 11 in Depth 166 0 mm 6 54 in Weight Weight with packaging 7 69 kg 16 95 lb Weight with stand assembly and cables 5 76 kg 12 70 lb Weight without stand assembly no cables 3 77 kg 8 31 lb Weight of stand a...

Page 18: ...t requirements Arsenic free glass and Mercury free for the panel only Energy Gauge shows the energy level being consumed by the monitor in real time Temperature Operating 0 C to 40 C 32 F to 104 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 Humidity Operating 10 to 80 non condensing Non operating Storage 10 to 90 non condensing Shipping 10 to 90 non condensin...

Page 19: ...ontal Sync Vertical Sync Video Power Indicator Power Consumption Normal operation Active Active Active White 127 W maximum 25 W typical Active off mode Inactive Inactive Blanked White Glowing Less than 0 3 W Switch off Off Less than 0 3 W Power Consumption PON 17 7 W Total Energy Consumption TEC 56 72 kWh Maximum power consumption with max luminance and USB active This document is informational on...

Page 20: ...e restored by Factory Reset function in the OSD menu Changing the factory default settings or enabling other features may increase power consumption that could exceed the ENERGY STAR specified limit NOTE PON Power consumption of On Mode as defined in Energy Star 8 0 version TEC Total energy consumption in KWh as defined in Energy Star 8 0 version ...

Page 21: ...onnector Pin Number 20 pin Side of the Connected Signal Cable 1 ML0 p 2 GND 3 ML0 n 4 ML1 p 5 GND 6 ML1 n 7 ML2 p 8 GND 9 ML2 n 10 ML3 p 11 GND 12 ML3 n 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 ...

Page 22: ...connector Pin Signal Pin Signal A1 GND B12 GND A2 SSTXp1 B11 SSTXp1 A3 SSTXn1 B10 SSTXn1 A4 VBUS B9 VBUS A5 CC1 B8 SBU2 A6 Dp1 B7 Dn1 A7 Dn1 B6 Dp1 A8 SBU1 B5 CC2 A9 VBUS B4 VBUS A10 SSRXn2 B3 SSRXp2 A10 SSRXp2 B2 SSRXp2 A12 GND B1 GND ...

Page 23: ...peed Data Rate Power Consumption Super speed 5 Gbps 4 5 W Max each port High speed 480 Mbps 4 5 W Max each port Full speed 12 Mbps 4 5 W Max each port Transfer Speed Data Rate Power Consumption High speed 480 Mbps 2 5 W Max each port Full speed 12 Mbps 2 5 W Max each port Low speed 1 5 Mbps 2 5 W Max each port USB 3 0 downstream connector Pin Number 9 pin Side of the Connector 1 VCC 2 D 3 D 4 GND ...

Page 24: ... 2 0 downstream bottom 2 x USB 3 0 downstream side NOTE USB 3 0 functionality requires a USB 3 0 capable computer NOTE The monitor s USB interface works only when the monitor is On or in the power save mode If you turn Off the monitor and then turn it On the attached peripherals may take a few seconds to resume normal functionality ...

Page 25: ...support monitors Maintenance guidelines Cleaning your monitor WARNING Before cleaning the monitor unplug the monitor power cable from the electrical outlet CAUTION Read and follow the Safety Instructions before cleaning the monitor For best practices follow the instructions in the list below while unpacking cleaning or handling your monitor To clean your screen lightly dampen a soft clean cloth wi...

Page 26: ...low the instructions on the flaps of carton to remove the stand from the top cushion that secures it 2 Insert the stand base blocks fully into the stand slot 3 Lift the screw handle and turn the screw clockwise 4 After fully tightening the screw fold the screw handle flat within the recess 2 1 3 5 Lift the cover to expose the VESA area for stand assembly 6 Attach the stand assembly to the monitor ...

Page 27: ...Setting up the monitor 27 2 1 7 Place the monitor upright ...

Page 28: ...he same time It is recommend to route the cables through the cable management slot before you connect them to the monitor To connect your monitor to the computer 1 Turn Off your computer and disconnect the power cable 2 Connect the DP USB Type C cable from your monitor to the computer Connecting the DP cable DP DP Connecting the monitor for DP Multi Stream Transport MST function DP DP out DP DP ...

Page 29: ...n your monitor Can be used as USB Type C or DisplayPort 1 2 alternatively Supports USB Power Delivery PD with profiles up to 65 W NOTE Regardless of the power requirement actual power consumption of your laptop or the remaining power runtime in your battery the monitor is designed to supply power delivery of up to 65 W to your laptop Rated power on laptops that have USB Type C with PowerDelivery M...

Page 30: ...e monitor for USB C Multi Stream Transport MST function USB Type c DP out DP USB Type c NOTE The maximum number of supported monitor via MST is subjected to the bandwith of the USB C source NOTE Remove the rubber plug when using DP out port ...

Page 31: ...Setting up the monitor 31 Organizing cables Use the cable management slot to route the cables connected to your monitor ...

Page 32: ... clean surface NOTE The following procedure is applicable only for the stand that shipped with your monitor If you are connecting a third party stand see the documentation that shipped 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 2 3 ...

Page 33: ...f the desk 2 Remove the stand See Removing the stand for details 3 Remove the four screws that secure the panel to the monitor 4 Attach the mounting bracket from the wall mounting kit to the monitor 5 To mount the monitor on the wall 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 load bearing capaci...

Page 34: ...ur monitor Operating your monitor Power on the monitor Press the button to turn on the monitor Language options English 简体中文日本語 Please select language Español Français Deutsch Português Brasil Pусский Dell 24 Monitor ...

Page 35: ...Individual settings can be changed in the Menu Using the control buttons Use the control buttons at the front of the monitor to adjust the settings on your monitor 1 2 3 4 5 Control buttons The following table describes the control buttons Control Buttons Description 1 Shortcut key Preset Modes Use this button for choose from a list of preset modes 2 Shortcut key Input Source Use the input source ...

Page 36: ...e power button to turn the monitor on and off Solid white light indicates the monitor is turned on Blinking white light indicates it is in power save mode OSD controls Use the buttons on the front of the monitor to adjust the image settings 1 2 3 4 Control Buttons Description 1 Up Use the Up button to increase values or move up in a menu 2 Down Use the Down button to decrease values or move down i...

Page 37: ... OSD main menu Input Source Color Display Others Personalize Menu Brightness Contrast Dell 24 Monitor 75 75 2 Press the and buttons to move between the setting options As you move from one icon to another the option is highlighted 3 Press the or or button once to activate the highlighted option 4 Press and button to select the desired parameter 5 Press and then use the and buttons according to the...

Page 38: ...justs the luminance of the backlight Press the button to increase the brightness and press the button to decrease the brightness min 0 max 100 Contrast Adjust the brightness first and then adjust the contrast only if further adjustment is necessary Press the button to increase the contrast and press the button to decrease the contrast min 0 max 100 The contrast function adjusts the degree of diffe...

Page 39: ...t HDMI input when you are using the HDMI con nector Push to select the HDMI input source Auto Select Select auto select to scan for available input signals Auto Select for USB C Allows you to set Auto Select for USB C to Prompt for Multiple Inputs always show Switch to USB C Video Input message for user to choose whether to switch or not Yes The monitor always switch to USB C video with out asking...

Page 40: ...ut 20 to 28 in 50 70 cm from your eyes Blink frequently to moisten or rewet your eyes when working with the monitor Take regular and frequent breaks for 20 minutes every two hours Look away from your monitor and gaze at a distant object at 20 feet away for at least 20 seconds dur ing the breaks Perform stretches to relieve tension in the neck arm back shoulders during the breaks Movie Loads color ...

Page 41: ...connected to a computer or DVD player using the HDMI cable YPbPr Select this option if your DVD player supports only YPbPr output Preset Modes Input Color Format Color Display Others Personalize Menu Brightness Contrast Dell 24 Monitor Input Source YPbPr RGB Reset Color Hue This feature can shift the color of the video image to green or purple This is used to adjust the desired flesh tone color Us...

Page 42: ...ase the colorful appearance of the video image NOTE Saturation adjustment is available only when you select Movie and Game mode Reset Color Allows your monitor color settings to the factory settings Display Use the display to adjust image Aspect Ratio Sharpness Response Time MST Display Others Personalize Menu Brightness Contrast Dell 24 Monitor 50 Wide 16 9 Normal Input Source Color Off Reset Dis...

Page 43: ...y to transfer the data with high resolution High Resolution or high speed High Data Speed when using the USB Type C port DisplayPort Aspect Ratio Sharpness Response Time MST Display Others Personalize Menu Brightness Contrast Dell 24 Monitor Input Source Color Reset Display USB C Prioritization High Data Speed High Resolution NOTE If your PC does not have a built in battery pack and is powered dir...

Page 44: ...lified Chinese or Japanese Rotation Rotates the OSD by 90 degrees counter clockwise You can adjust the menu according to your display rotation Transparency Select this option to change the menu transparency by pressing the and buttons from 0 to 100 Timer OSD hold time sets the length of time the OSD will remain active after the last time you pressed a button Use or to adjust the slider in 1 second...

Page 45: ...ota tion to set the shortcut key 1 Shorout Key 1 Aspect Ratio USB A Charging Display Others Personalize Menu Brightness Contrast Dell 24 Monitor Color Power Button LED Input Source Shorout Key 2 Brightness Contrast USB C Charging Rotation Input Source Preset Modes Reset Personalization Shortcut Key 2 User can select one of the following Preset Modes Brightness Contrast Input Source Aspect Ratio Ro...

Page 46: ...A Charging func tion during monitor standby mode Shorout Key 1 Shorout Key 2 Power Button LED USB C Charging Display Others Personalize Menu Brightness Contrast Dell 24 Monitor Color Input Source USB A Charging Reset Personalization USB C Charg ing Allows you to enable or disable USB C Charging func tion during monitor power off mode Shorout Key 1 Shorout Key 2 Power Button LED USB C Charging Disp...

Page 47: ...I Input Source DP Service Tag Firmware DP Capability DP 1 2 Model Dell P2421DC USB 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 by selecting on for best user experi ence and optimum performance of your monitor M...

Page 48: ... preset values Factory Reset Restore all preset values to the factory default settings These are also the settings for ENERGY STAR tests Menu Display Info Reset Others Display Others Personalize Brightness Contrast Dell 24 Monitor Color LCD Conditioning DDC CI On Input Source Service Tag Firmware 13C114 ENERGY STAR Factory Reset Easy Initial Setup Select Yes to enable the following function s Yes ...

Page 49: ...ey button 4 for 4 seconds to display the lock menu when Menu and Power buttons unlocked A lock menu appears and is shown on the bottom right corner of display screen Dell 24 Monitor Select Option To enter the unlock menu Hold the Exit key button 4 for 4 seconds to display the lock menu when Menu and Power buttons locked A unlock menu appears and is shown on the bottom right corner of display scree...

Page 50: ...djustments are allowed and the Power button is locked 4 Built in Diagnostics See Built in diagnostics for more information NOTE To get into the Lock or Unlock menu Press and hold the Exit key button 4 for 4 seconds The icon will appear on center of display screen when in the following conditions which mean Menu and Power buttons is in lock state 1 Press the Up key button 1 Down key button 2 Menu k...

Page 51: ...ell 24 Monitor This means that the monitor cannot synchronize with the signal that it is receiving from the computer See Monitor specifications for the Horizontal and Vertical frequency ranges addressable by this monitor Recommended mode is 2560 x 1440 Before the DDC CI function is disabled the following message is displayed The function of adjusting display setting using PC application will be di...

Page 52: ...our device If HDMI DP or USB Type C cable is not connected a floating dialog box as shown below appears The monitor will enter Power Save Mode after 4 minutes if left at this state Dell P2418HZ Dell 24 Monitor No HDMI Cable The display will go into Power Save Mode in 4 minutes www dell com P2421DC P2421DC or Dell P2418HZ Dell 24 Monitor No DP Cable The display will go into Power Save Mode in 4 min...

Page 53: ... is connected to the monitor Dell P2418HZ Dell 24 Monitor Switch to USB C Video Input P2421DC Yes No The OSD functions only in the normal operation mode When any button is pressed in the Active off mode the following message will be displayed Dell P2418HZ Dell 24 Monitor P2421DC Press any key on the keyboard or move the mouse to wake it up If there is no display press the monitor button again to s...

Page 54: ...y with ENERGY STAR requirements P2421DC When Yes is selected the following message appears Yes Dell 24 Monitor No Are you sure you want to reset to default settings P2421DC If USB C Charging On During Power Off following warning message will appear when user manually change USB C Prioritization away from current stored value Dynamic switching of USB C Prioritization is disabled when Dell 24 Monito...

Page 55: ...u are using a non Dell computer portable or desktop Go to the support site for your computer and download the latest graphic drivers Go to your graphics card website and download the latest graphic drivers If you have a Dell desktop or a Dell portable computer with internet access Go to www dell com support enter your service tag and download the latest driver for your graphics card 5 After instal...

Page 56: ...plier from the description at the top of the window e g NVIDIA ATI Intel and so on 6 Refer to the graphic card provider website for updated driver for example www ATI com OR www AMD com 7 After installing the drivers for your graphics adapter attempt to set the resolution to 2560 x 1440 again ...

Page 57: ...t up with any other stand see the documentation that shipped with the stand Tilt Swivel With the stand attached to the monitor you can tilt and swivel the monitor for the most comfortable viewing angle 45 45 5 21 NOTE The stand is detached when the monitor is shipped from the factory Vertical Extension NOTE The stand can be extended vertically up to 130 mm ...

Page 58: ...ng your monitor 130mm Rotating the Monitor Before you rotate the monitor your monitor should be fully vertically extended Vertical Extension and fully tilted up to avoid hitting the bottom edge of the monitor 1 2 ...

Page 59: ...Operating your monitor 59 90 90 90 90 ...

Page 60: ... you are using the monitor with a non Dell computer you need to go the graphics driver website or your computer manufacturer website for information on rotating the contents on your display To adjust the Rotation Display Settings 1 Right click on the desktop and click Properties 2 Select the Settings tab and click Advanced 3 If you have an ATI graphics card select the Rotation tab and set the pref...

Page 61: ...steps 1 Turn off both your computer and the monitor 2 Disconnect all video cables from the monitor This way the computer doesn t have to be involved 3 Turn on the monitor If the monitor is working correctly it detects that there is no signal and one of the following message appears While in self test mode the power LED remains white Dell P2418HZ Dell 24 Monitor No HDMI Cable The display will go in...

Page 62: ...bles check your video controller and computer Built in diagnostics Your monitor has a built in diagnostic tool that helps you determine if any screen abnormality you experience is an inherent problem with your monitor or with your computer and video card NOTE You can run the built in diagnostics only when the video cable is unplugged and the monitor is in self test mode 1 2 3 4 5 To run the built ...

Page 63: ...he Up key button 1 on the back cover again The color of the screen changes to grey 7 Inspect the display for any abnormalties 8 Repeat step 6 and 7 to inspect the display in red green blue black white and text pattern screens The test is complete when the text pattern screen appears To exit press the Up key button 1 again If you do not detect any screen abnormalties upon using the built in diagnos...

Page 64: ...rol button other than the power button to display the shortcut menu of Input Source 3 Use the or button to highlight USB Type C Input Source Auto USB Type C Dell 24 Monitor DP HDMI 4 Press and hold the button for approximately 8 seconds 5 The USB C Prioritization configuration message will appear Select USB C Prioritization Dell 24 Monitor High Resolution P2421DC High Data Speed 6 Use the or butto...

Page 65: ... cable connector Run the built in diagnostics Ensure that the correct input source is selected via the Input Source menu Poor Focus Eliminate video extension cables Reset the monitor to Factory Settings Factory Reset Change the video resolution to the correct aspect ratio Shaky Jittery Video Reset the monitor to Factory Settings Factory Reset Check environmental factors Relocate the monitor and te...

Page 66: ...or Restart the computer in the safe mode Safety Related Issues Do not perform any troubleshooting steps Contact Dell immediately Intermittent Problems Ensure that the video cable connecting the monitor to the computer is connected properly and is secure Reset the monitor to Factory Settings Factory Reset Perform monitor self test feature check to determine if the intermittent problem occurs in sel...

Page 67: ...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 dynamically changing screensaver Video Ghosting or Overshooting Change the Response Time in the Display OSD to Fast or Normal depending on your application and usage ...

Page 68: ...cessary Reset the computer or video player The picture does not fill the entire screen Due to different video formats aspect ratio of DVDs the monitor may display in full screen Run the built in diagnostics No image when using USB Type C connection to PC or Notebook Verify if the PC or Notebook USB Type C interface can support Alternate mode DP1 2 USB Type C interface of PC or Notebook can not sup...

Page 69: ... is plugged in Increase the distance between the USB 3 0 peripherals and the wireless USB receiver Position your wireless USB receiver as close as possible to the wireless USB peripherals Use a USB extender cable to position the wireless USB receiver as far away as possible from the USB 3 0 port No Video when connected to some docking device at HDMI DP Type C port There is no video when unplug plu...

Page 70: ...e safety instructions for best performance and long life for your monitor 1 The socket outlet shall be installed near the equipment and shall be easily accessible 2 The equipment can be installed on wall or ceiling mounting in horizontal position 3 The monitor is equipped with a three pronged grounded plug a plug with a third Grounding pin 4 Do not use this product near water 5 Read these instruct...

Page 71: ...ries by country and product and some services may not be available in your area To get online Monitor support content 1 Visit www dell com support monitors To contact Dell for sales technical support or customer service issues 1 Visit www dell com support 2 Verify your country or region in the Choose A Country Region drop down menu at the bottom of the page 3 Click Contact Us on the left side of t...

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