3-12 B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUALPANEL CUTOUTS CHAPTER 3: INSTALLATION3Figure 3-11: Example of modules in F and H slotsThe torque used to connect the screws that connect the terminal blocks (top screws a, b, c) and the metal plates overempty slots to the chassis is 9 inch-pounds. For the screws used to wire the terminal blocks (rows 1 to 8), use 19 ± 1 inch-pounds. During manufacturing, the power supply and CPU modules are installed in slots B and D of the chassis with 13inch-pounds of torque on the screws at the top and bottom of the modules. Wire connections to these two modules at 13inch-pounds.Figure 3-12: CPU modules and power supplyThe following figure shows the optical connectors for CPU modules.