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Product Announcement:
This product is certificated to meet RoHS
Directive and Lead-Free produced definition.
Using approved critical components only is
recommended when the situation to replace
defective parts. Vender assumes no liability
express or implied, arising out of any unauthorized
modification of design or replacing non-RoHS
parts. Service providers assume all liability.
Qualified Repairability:
Proper service and repair is important to the safe,
reliable operation of all series products. The
service providers recommended by vender should
be aware of notices listed in this service manual in
order to minimize the risk of personal injury when
perform service procedures. Furthermore, the
possible existed improper repairing method may
damage equipment or products. It is recommended
that service engineers should have repairing
knowledge, experience, as well as appropriate
product training per new model before performing
the service procedures.
NOTICE:
! To avoid electrical shocks, the products should be
connected to an authorized power cord, and turn
off the master power switch each time before
removing the AC power cord.
! To prevent the product away from water or
expose in extremely high humility environment.
! To ensure the continued reliability of this
product, use only original manufacturer's
specified parts.
! To ensure following safety repairing behavior, put
the replaced part on the components side of
PWBA, not solder side.
1. Important Safety Notice
! To ensure using a proper screwdriver, follow the
! Using Lead-Free solder to well mounted the
! The fusion point of Lead-Free solder requested in
torque and force listed in assembly and
disassembly procedures to unscrew screws.
parts.
the degree of 220°C.
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Summary of Contents for Dell P3221D
- Page 1 1. Important Safety Notice Product Announcement: ! To ensure using a proper screwdriver, follow the This product is certificated to meet RoHS torque and force listed in assembly and Directive and Lead-Free produced definition. disassembly procedures to unscrew screws. Using approved critical components only is ! Using Lead-Free solder to well mounted the recommended when the situation to replace parts.
- Page 2 2. Exploded view diagram with list of items...
- Page 3 3. Wiring Connectivity Diagram Panel FK key BD Interface BD Power BD LED BD USB3.0 Down4 USB BD USB3.0 Down3 AC In HDMI 1.4 In DP 1.2 In Type C USB 2.0 Down 1 USB 2.0 Down 2...
- Page 4 4. Disassembly and Assembly Procedures Lift the rear cover up carefully. Disconnect the Necessary repair and test equipment: 1. Philips-head screwdriver joystick key cable from the connector of the interface board, and then remove the rear cover and put it 4.1 Disassembly Procedures: Remove the monitor stand base: aside for later diasassembling.
- Page 5 4. Disassembly and Assembly Procedures Tear off 1pcs conductive tape and 1pcs aluminum foil as the picture below shown. Use a Philips-head screwdriver to remove 4pcs screws for unlocking the middle bezel with front bezel. (No.1~4 screw size=M2x3.5, Torque=2.5 0.5kgfxcm) ±...
- Page 6 4. Disassembly and Assembly Procedures Remove the power board board and interface Take away the bracket chassis module and then put board from the bracket chassis module carefully, the bracket chassis module on a protective cushion. and then disconnect all of the cables. Remove the Mylar tape from the hooks of the bracket.
- Page 7 4. Disassembly and Assembly Procedures 4.2 Assembly Procedures: Take a mylar to insert the hooks of the bracket to Place a bracket chassis base on a protective cover the power board as the following picture shown. cushion, then stick 1pcs Silicon sheet on the position as the picture below shown.
- Page 8 4. Disassembly and Assembly Procedures Take 1pcs panel lamp cable to connect the circuit board with the connectors of the panel module. Move the middle bezel with the LED board close to the panel unit, then assemble the middle bezel with the front bezel and panel module.
- Page 9 4. Disassembly and Assembly Procedures Paste 1pcs aluminum foil to cover the two LVDS Take 1pcs joystick key and 1pcs OSD board, connectors, then use a Philips-head screwdriver to assemble the joystick key with the OSD board. tighten 4pcs screws for locking the middle bezel with Locate the board to the correct position of the rear front bezel.
- Page 10 4. Disassembly and Assembly Procedures Use a Philips-head screwdriver to tighten 4pcs screws for locking the rear cover with the assembled unit. Stick 2pcs labels on the specific positions of the rear cover as the picture below shown. (No.1~4 screw size=M4x11; Torque=11 1kgfxcm) ±...
- Page 11 LED remains white. Also, depending upon the selected input, one of the dialogs shown below will continuously scroll through the screen. No HDMI Cable The display will go into Standby mode in 4 minutes. www.dell.com/P3221D No DP Cable The display will go into Standby mode in 4 minutes. www.dell.com/P3221D No USB-C Cable The display will go into Standby mode in 4 minutes.
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Page 12: Built-In Diagnostics
5. Trouble Shooting Instructions Built-in diagnostics Your monitor has a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing 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. -
Page 13: Common Problems
• Cycle power on-off. spots • Pixel that is permanently off is a natural defect that can occur in LCD technology. • For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: www.dell.com/support/monitors. Stuck-on Pixels LCD screen has •... - Page 14 5. Trouble Shooting Instructions Common What You Possible Solutions Symptoms Experience Intermittent Monitor • Ensure that the video cable connecting the Problems malfunctions on monitor to the computer is connected properly & off and is secure. • Reset the monitor to factory settings. •...
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Page 15: Product Specific Problems
5. Trouble Shooting Instructions Product specific problems Problem What you Possible solutions experience Screen image is Image is • Check the Aspect Ratio setting in the Display too small centered on menu OSD. screen, but • Reset the monitor to factory settings. does not fill entire viewing area... - Page 16 USB Type-C connection. • Ensure that you use only Dell approved adapter or the adapter that comes with the product. • Ensure that the USB Type-C cable is not damaged.
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Page 17: Universal Serial Bus (Usb) Specific Problems
5. Trouble Shooting Instructions Universal Serial Bus (USB) specific problems Specific What You Possible Solutions Symptoms Experience USB interface is USB peripherals • Check that your display is turned ON. not working are not working • Reconnect the upstream cable to your computer.