iMac (24-inch, M1, 2021, Two ports) Logic Board Cover
Before You Begin

Important
- This procedure may require replacement pieces of tape, which are not separate orderable parts. 
- The tape for the opening over the USB-C board (1) is included with a replacement logic board cover. 
- The tape for the middle of the logic board cover (2) is included in the display starter kit and the display refill kit. 

Removal
- Position the housing with the back facedown and the top closest to you.  
- Peel the tape off the middle of the logic board cover. Save the tape for reassembly.  
- Use the T3 screwdriver to remove the 14 T3 screws (923-05557) from the logic board cover.  
- Tilt up the logic board cover. Then pull it toward you to remove it from the housing. - Caution: Don’t touch the logic board with the logic board cover. 
  
Reassembly
- Look for foam on the underside of the logic board cover where the speaker cables connect to the logic board. - If the logic board cover has foam, don’t adhere foam over the speaker cable connectors on the logic board. 
- If the logic board cover doesn’t have foam, adhere foam over the speaker cable connectors on the logic board. 
 
- Slide the logic board cover into the housing and lay it flat over the logic board. - Caution: Don’t touch the logic board with the logic board cover. 
  
- Use the T3 screwdriver to reinstall the 14 T3 screws (923-05557) into the logic board cover.  
- Adhere the tape onto the middle of the logic board cover. - Important: If the tape was damaged during removal, discard it and use replacement tape.  
- Important: If you replaced the logic board cover, adhere the replacement tape onto the logic board cover over the USB-C board. 
  
Reinstall the following part to complete reassembly: