Dell S2721HS, S2721HSX Disassembly Manual

Disassembly Procedures

1. Open the Pizza carton with a proper tool.
   
2. Take out all of the accessories including QSG, HDMI 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 from the carton, then take out the riser and monitor from the EPE bag and put it on a protective cushion.
   
4. Use a Philips-head screwdriver to remove 4pcs screws for unlocking mechanisms
   (No.1~4 screw size=M4x11; 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 1pcs acetate tape and then disconnect the panel lamp cable away from the connector of panel. Tear off 2pcs aluminum foils, and then disconnect the function key cable away from the connector of the board.
   
   
7. Use a Philips-head screwdriver to remove 18pcs screws for unlocking the middle bezel.
   (No.1~13 screw size=M3x4, Torque=3~4kgfxcm; No.14~18 screw size=M2x3.3, Torque=1±0.2kgfxcm)
   
8. Use a Philips-head screwdriver to remove 2pcs screws for unlocking the bracket with panel module.
   (No.1~2 screw size=M3x3, Torque=3~4kgfxcm )
   
9. 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, and then tear off the tapes for releasing the key cables.
   (No.1~3 screw size=M2x2.4, Torque=0.8±0.2kgfxcm)
   
   
10. Tear off the tape, then lift up the panel module with the bracket chassis for releasing the front bezel away from the panel module.
    
11. Unplug the LVDS cable from the connector of the panel module by pushing the earing-locks.
    
12. Take away the bracket chassis module and then put the bracket chassis module on a protective cushion.
    
13. Remove the Mylar from the hooks of the bracket chassis module.
    
14. Use a Philips-head screwdriver to remove 5pcs screws for unlocking the circuit board, release all the cables from the hooks.
    (No.1 screw size=M4x8, Torque=6±0.5kgfxcm; No. 2~5 screw size=M3x7.5, Torque=6±0.5kgfxcm)
    
    
15. Remove the interface board and power board from the bracket chassis module carefully, and disconnect all the cables.
    
16. Remove electrolyte capacitors (red mark) from printed circuit boards.
    
    1. Cut the glue between bulk cap and PCB with a knife.
       
    2. Ensure cutting path within the glue, don't touch bulk cap or PCB.
       
    3. Cut into the bottom of bulk cap and pull it up carefully.
       
    4. Take out bulk cap. pin solder with soldering iron and absorber.
       
    5. Lift the bulk cap. up and away from the PCB.
       

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

Documents / Resources

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Dell S2721HS, S2721HSX Disassembly Manual