5. Using Figure 5-2 as a guide, bend the side-panel detents on the case 
outward and pull the board assembly out of the case by the mounting 
screw stem.
NOTE: From this point forward, these 5 steps are referred to as “Reveal the
main board”.
Figure 5-2. Board Assembly Removing/Installing Detail
The meter is now disassembled to the point where you can check and
configure jumpers and install boards.
REINSERTING THE MAIN BOARD ASSEMBLY INTO THE CASE
Reinsert the Main Board into the case once jumpers and optional boards
have been configured and installed.
Spread the side-panel detents of the case, and carefully slide the main
board all the way in.