Hi Plymouthair.
First of all you need the IRS aligned,then when they run up,select nav,Then goto isle stand,on the left side of the throttle quadrant,and select the efis buttons to on,the far left hand switch does not work I.E. dummy switch,but the rest need to be on,and you also need the weather radar switched on,just below throttle quadrant to the left.
This is assuming you are in the vc cockpit.
For the 2d cockpit,bring up these sub-panels,IRS/EFIS/RDR.
regards alan.