Dell S3225QC Simplified Service Manual

32 plus 4k qd-oled monitor

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Dell 32 Plus 4K QD-OLED Monitor

S3225QC

Simplified Service Manual

Model: S3225QC

Regulatory Model: S3225QCc

March 2025

Rev. A00

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Summary of Contents for Dell S3225QC

Page 1 Dell 32 Plus 4K QD-OLED Monitor S3225QC Simplified Service Manual Model: S3225QC Regulatory Model: S3225QCc March 2025 Rev. A00...
Page 2 A WARNING indicates a potential for property damage, personal injury, or death. Copyright © 2025 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.
Page 3 Major components of S3225QC ........
Page 4 Contacting Dell ........
Page 5 Safety instructions Use the following safety guidelines to protect your monitor from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that is shipped with your monitor.
Page 6 Views of S3225QC monitor Front view Figure 1. Front view of the monitor Table 1. Front view of the monitor. Description Power LED indicator Solid white light indicates that the monitor is turned on and functioning normally. Blinking white light indicates that the monitor is in Standby Mode.
Page 7 Releases the stand from the monitor. Regulatory label (including MyDell QR See this label if you need to contact Dell for technical support. The code, serial number, and Service Tag label) Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your monitor and access warranty information.
Page 8 Press the Quick Access Port (QAP) module and then release the monitor’s built-in USB. For more Information. For more Information, see Using the Quick Access Port (QAP) in the User's Guide of.S3225QC. USB-C 5Gbps upstream port (DisplayPort Connect the USB Type-C cable that came with your monitor to the 1.4 Alternate Mode, Power Delivery up to...
Page 9 Major components of S3225QC Figure 5. Major components of S3225QC Major components of S3225QC...
Page 10 Middle frame LED board Display panel Note For replacement of power cable, connectivity cable and external power supply (if applicable), contact Dell: Go to Dell Support Site. Verify your country or region in the Choose A Country/Region drop-down menu at the bottom-right corner of the page.
Page 11 Wiring connectivity diagram Figure 6. Wiring connectivity diagram Figure 7. Wiring connectivity diagram Wiring connectivity diagram...
Page 12 Table 5. Wire connectivity diagram. Description Speaker cable Speaker cable System board - USB board cable USB board cable Keypad board to LED board cable Keypad board to system board cable Wiring connectivity diagram...
Page 13 Safety instructions. NOTE: Dell monitors are designed to work optimally with the Dell-supplied cables inside the box. Dell does not guarantee the video quality and performance if non-Dell cables are used. NOTE: Route the cables through the cable management guide before connecting them.
Page 14 4. Attaching the I/O cover. Figure 11. Attaching the I/O cover To attach the I/O cover: • Align and place the tabs on the I/O cover with the slots on the display back-cover. Press the I/O cover to snap it into place. Turn on the monitor and the computer. •...
Page 15 Disassembly and reassembly CAUTION: The information in this section is intended for authorized service technicians in the EMEA region. Dell prohibits users from disassembling the monitor, and any damage caused by unauthorized servicing will not be covered under the warranty.
Page 16 Component Screw type Quantity Screw image LED board Q2x3 Q3x5 USB board M3x4 Keypad board Q2x3 Disassembly and reassembly...
Page 17 Stand Removing the stand Prerequisites Follow the procedure in Before working inside your monitor. About the task The following image indicates the location of the stand and provides a visual representation of the removal procedure. Figure 13. Removing the stand Steps Place the monitor on a clean, flat surface on a soft cloth or cushion.
Page 18 Figure 14. Installing the stand Steps Align and insert the stand riser into the stand base until it snaps into place. Open the screw handle at the bottom of the stand base and turn it clockwise to secure the stand assembly. Close the screw handle.
Page 19 Back cover Removing the back cover Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. About the task The following image indicates the location of the back cover and provides a visual representation of the removal procedure. M4x10 Figure 15.
Page 20 Figure 16. Disconnecting the keypad board and LED board cable Steps Remove the four screws (M4x10) that secure the back cover to the chassis. Using a plastic scribe, pry the back cover starting from the bottom edge of the monitor. Lift the back cover from the right, and disconnect the keypad board cable from the connector on the system board.
Page 21 Figure 17. Connecting the keypad board and LED board cable Disassembly and reassembly...
Page 22 M4x10 Figure 18. Replacing the screws Steps Connect the keypad board cable to the connector on the system board. Connect the LED cable to the keypad board and adhere the tape. Align the screw holes on the back cover with the screw holes on the monitor, and gently press along the sides to snap the back cover into place.
Page 23 Speaker Removing the speaker Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. About the task The following image indicates the location of the speaker and provides a visual representation of the removal procedure. Figure 19.
Page 24 Q3x5 Figure 20. Disconnecting the speaker cables and removing the screws Steps Peel back the tapes and Mylar that secure the cables and metal shield to the display panel. Disconnect the speaker cable from the connector on the system board. Remove the fourteen screws (Q3x5) that secure the speakers to the middle frame.
Page 25 Installing the speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the speaker and provides a visual representation of the installation procedure. Q3x5 Figure 21.
Page 26 Figure 22. Adhere the tapes and Mylar to secure the cables and metal shield Steps Align and place the speakers in the slots on the chassis. Connect the speaker cable to the connector on the system board. Align the screw holes on the speakers with the screw holes on the middle frame. Replace the fourteen screws (Q3x5) to secure the speakers to the middle frame.
Page 27 Metal shield Removing the metal shield Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. Remove the speaker. About the task The following image indicates the location of the metal shield and provides a visual representation of the removal procedure. Figure 23.
Page 28 P3x5 Figure 24. Removing the screws and disconnecting the display cables Steps Disconnect the system board cable, the USB board cable, the webcam module cable, and IR cable from the connectors on the system board and the display panel. Remove the ten screws (P3x5) that secure the metal shield to the middle frame. Lift the metal shield partially and disconnect the display cables from the connector on the display panel.
Page 29 Installing the metal shield Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the metal shield and provides a visual representation of the installation procedure. P3x5 Figure 25.
Page 30 Figure 26. Connecting the USB cables and IR cables Steps Connect the display cables to the connectors on the display panel. Align the screw holes of the metal shield to the screw holes on the display panel. Replace the ten screws (P3x5) to secure the metal shield to the display panel. Connect the system board cable, the USB board cable, the webcam module cable, and IR cable to the connectors on the system board and the display panel.
Page 31 About the task The following image indicates the location of the system board, power board, the fan and provides a visual representation of the removal procedure. M2x5 Figure 27. Removing the fan and the Mylar Disassembly and reassembly...
Page 32 Figure 28. Removing the metal shield I/O-cover M3x6 M4x6 Figure 29. Removing the screws Disassembly and reassembly...
Page 33 Figure 30. Disconnecting the cables Steps Remove the two screws (M2x5) that secure the fan to the metal shield. Disconnect the cable to remove the fan and then remove the Mylar sheet from the system board and power board. Remove the metal shield I/O-cover from the metal shield. Remove the eight screws (M3x6) and the screw (M4x6) that secure the system board and power board to the metal shield.
Page 34 Figure 31. Connecting the cables Disassembly and reassembly...
Page 35 M3x6 M4x6 Figure 32. Replacing the screws Figure 33. Replacing the metal shield I/O-cover Disassembly and reassembly...
Page 36 M2x5 Figure 34. Installing the Mylar and the fan Steps Connect the cables to the connectors on the system board, power board, and the fan. Replace the eight screws (M3x6) and the screw (M4x6) to secure the system board, power board to the metal shield. Replace the metal shield I/O-cover on the metal shield.
Page 37 Install the stand. Follow the procedure in After working inside your monitor. Middle frame Removing the middle frame Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. Remove the speaker. Remove the metal shield.
Page 38 Installing the middle frame Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the middle frame and provides a visual representation of the installation procedure. M3x4 P3x6 Figure 36.
Page 39 LED board and webcam module Removing the LED board and webcam module Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. Remove the speaker. Remove the metal shield. Remove the middle frame. About the task The following image indicates the location of the LED board and webcam module and provides a visual representation of the removal procedure.
Page 40 Steps Remove the screw (Q2x3) that secure the LED board to the middle frame. Remove the two screws (Q3x5) that secure the webcam module to the middle frame. Installing the LED board and webcam module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the LED board, webcam module and provides a visual representation of the installation procedure.
Page 41 Steps Replace the screw (Q2x3) to secure the LED board to the middle frame. Replace the two screws (Q3x5) to secure the webcam module to the middle frame. Next steps Install the middle frame. Install the metal shield. Install the speaker. Install the back cover.
Page 42 Figure 39. Removing the USB board Steps Remove the two screws (Q3x5) to remove the USB module from the middle frame. Remove the USB front cover and USB rear cover. Remove the screw (M3x4) that secure the USB board to the braket bottom. Installing the USB board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Page 43 Figure 40. Installing the USB board Steps Replace the screw (M3x4) that secure the USB board to the braket bottom Replace the USB front cover and USB rear cover. Replace the two screws (Q3x5) that secure the USB board to the middle frame. Next steps Install the middle...
Page 44 Q2x3 Figure 41. Removing the keypad board and disconnecting the cables Steps Remove the three screws (Q2X3) that secure the keypad board to the back cover. Lift the keypad board away from the back cover. Disconnect the cables from the connectors on the keypad board. Installing the keypad board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Page 45 Q2x3 Figure 42. Connecting the cables and installing the keypad board Steps Connect the cables to the connectors on the keypad board. Align and place the keypad board on the back cover. Replace the three screws (Q2x3) to secure the keypad board to the back cover. Next steps Install the back...
Page 46 Troubleshooting WARNING: Before you begin any of the procedures in this section, follow the Safety instructions. Self-Test Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps: Turn off both your computer and the monitor.
Page 47 Built-in diagnostics Your monitor includes a built-in diagnostic tool to help you determine whether the screen abnormality is due to an issue with the monitor or with your computer and video card. To run the built-in diagnostics: Ensure that the screen is clean (no dust particles on the surface of the screen). Press the joystick button to launch the OSD Main Menu.
Page 48 • Cycle power On-Off. Pixel that is permanently off is a natural defect that can occur in • OLED technology. For more information about Dell Monitor Quality and Pixel Policy, see • www.dell.com/pixelguidelines. Stuck-on pixels OLED screen has bright Cycle power On-Off.
Page 49 Check whether the OSD menu is locked. If yes, move and hold the joystick up/down/left/right for four seconds to unlock (see Lock and Locking the control buttons in the User's Guide of S3225QC. No input signal when you No picture, the LED light is •...
Page 50 Universal Serial Bus (USB) specific problems Table 2. Universal Serial Bus (USB) specific problems Common symptoms What you experience Possible solutions USB interface is not USB peripherals are not Check that your monitor is turned on. • working working Reconnect the upstream cable to your computer. •...
Page 51 Audio specific problems Table 3. Audio specific problems Common symptoms What you experience Possible solutions No Audio (muted, source No sound Increase volume control from the OSD. • issue, configuration issue, Ensure that the power is turned on and the screen is display •...
Page 52 Regulatory information FCC notices (U.S. Only) and other regulatory information For FCC notices and other regulatory information, see the regulatory compliance website at www.dell.com/regulatory_compliance. EU product database for energy label and product information sheet S3225QC: https://eprel.ec.europa.eu/qr/2200407 Regulatory information...
Page 53 Contacting Dell To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell. NOTE: Availability varies by country, region, or product, and some services may not be available in your country. NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice, packing slip, bill, or Dell product catalog.

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