Dell S2721H Monitor Teardown Owner’s Manual

Dell S2721H Monitor Teardown Owner’s Manual

Disassembly Procedures

1. Open the Pizza carton with a proper tool.
   

2. Take out all of the accessories including HDMI QSG, cable, power cable, CD&user’s manual, stand base, stand riser and EEI label from the carton. (Note: It depends on whether users returning the accessories)

3. Take out of the molded pulp with base, riser and cover form the carton, then take out the monitor the EPE bag and put it on a protective cushion.

4. Use a Philips-head screwdriver to remove 6pcs screws for unlocking mechanisms.
   (No.1~4 screw size=M4x11; Torque=7 8kgfxcm;
   No.5~6 screw size=M4x8; Torque=7 8kgfxcm)
   
   

5. Wedge your fingers between the rear cover and the middle bezel on the corners of the top side of the monitor to release the rear cover, then use one hand to press the middle bezel, the other hand to pull up carefully the rear cover in order of arrow preference for unlocking mechanisms of rear cover..

6. Tear off 2pcs acetate tapes and then disconnect the speaker cable away from the connector. Use a Philips-head screwdriver to remove 6pcs screws for unlocking the speakers with middle bezel.
   **(No.1~6 screw size=M3x8, Torque=5~6kgfxcm)
   

**

7. Tear off 1pcs aluminum foil (refer to S7) and then remove the two speakers. Use a Philips-head screwdriver to remove 5pcs screws for unlocking the middle bezel with front bezel.
   (No.1~5 screw size=M2x3.3, Torque=1±0.2kgfxcm)
   
   

8. Tear off 1pcs aluminium foils for unfixing the LVDS connector, and then disconnect the function key cable away from the connector. Tear off 1pcs acetate tape and disconnect the panel lamp cable away from the connector of the panel module.
   

9. Use a Philips-head screwdriver to remove 2pcs screws for unlocking the bracket with middle bezel, to remove 2pcs screws for unlocking the bracket with panel module.
   (No.1~2 screw size=M3x4, Torque=3~4kgfxcm;
   No.3~4 screw size=M3x3.5, Torque=2~3kgfxcm )
   
   

10. Use a Philips-head screwdriver to remove 13pcs screws for unlocking the middle bezel with the assembled unit.
    (No.1~13 screw size=M3x4, Torque=3~4kgfxcm)
    
    

11. Take away the middle bezel, and put it on a fixture. Use a Philips-head screwdriver to remove 3pcs  screws for unlocking the function key board with the middle bezel, and then tear off the tapes for releasing the key cables.
    (No.1~3 screw size=M2x2.4, Torque=0.8±0.2kgfxcm
    

12. Tear off the tape, then lift up the panel module with the bracket chassis for releasing the front bezel away from the panel module.
    
    

13. Unplug the LVDS cable from the connector of the panel module by pushing the earing-locks.
    

14. Take away the bracket chassis module and then put the bracket chassis module on a protective cushion.
    

15. Remove the Mylar from the hooks of the bracket chassis module.
    

16. Use a Philips-head screwdriver to remove six screws for unlocking the circuit board, release all the cables from the hooks.
    (No.1~5 screw size=M3x7.5, Torque=6±0.5kgfxcm;
    **No. 6 screw size=M4x8, Torque=6±0.5kgfxcm)

**

17. Remove the interface board and power board from the bracket chassis module carefully, and disconnect all the cables.
    

18. Remove electrolyte capacitors (red mark) from printed circuit boards.

    • S18-1 Cut the glue between bulk cap. and PCB with a knife
      

    • S18-2 Ensure cutting path within the glue, don’t touch bulk cap. or PCB.
      

    • S18-3 Cut into the bottom of bulk cap. and pull it up carefully.
      

    • S18-4 Take out bulk cap. pin solder with soldering iron and absorber.
      

    • S19-5 Lift the bulk cap. up and away from the PCB.
      

Product material information

The following substances, preparations, or components should be disposed of or recovered separately from other WEEE in compliance with Article 4 of EU Council Directive 75/442/EEC.

printed circuit boards (with a surface greater than 10 square cm)
Component contain toner, ink and liquids| No used
Plastic containing BFR| No used
Component and waste contain asbestos| No used
CRT| No used
Component contain CFC, HCFC, HFC and HC| No used
Gas discharge lamps| No used
LCD display > 100 cm2| Product has an LCD greater than 100 cm2
External electric cable| Product has external cables
Component contain refractory ceramic fibers| No used
Component contain radio-active substances| No used
Electrolyte capacitors (height > 25mm, diameter > 25mm)| Product has electrolyte capacitors (height > 25mm, diameter > 25mm)

Tools Required

List the type and size of the tools that would typically can be used to disassemble the product to a point where components and materials requiring selective treatment can be removed.

Tool Description:

• Screwdriver (Phillip head) #1
• Screwdriver (Phillip head) #2
• Penknife
• Soldering iron and absorber

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