Disassembly/Reassembly Procedures Radio Reassembly - Detailed 5-27
wider edge is at the top side as per Figure 5-36.
Figure 5-36.  Battery contact seal reassembly
4. Place the mainboard assembly on the chassis and replace the 5 M2 screws.
Figure 5-37.  Mainboard reassembly
Make sure the battery contact seal is not twisted or lifted when 
the mainboard assembly is placed on the chassis.