20 Replacing the Power Supply
i3070 4-mod Inline System (E9986E)
11 Locate the cable labeled F1+ (TB-2 to F-5). Disconnect the cable from TB-2
and connect it to K-B.
12 Connect a new cable labeled F2+ to K-B. Connect the other end to TB-2, in the
space previously occupied by F1+.
13 At TB-1, move the cable labeled L4 to the space previously occupied by L5
which was removed in step 5.