Completed rewiring of power supply into the IBM 1132 printer

FINISHING UP TERMINAL BLOCK 2 WIRING

This side was slightly complicated because there were two wiring looms plus a single wire that had been attached. IBM laces up bundles of wires so that the ring terminals line up precisely with the positions they will be connected to on the terminal blocks, making it very easy to get the reattachment done correctly. However, with two looms there is some relative positioning to work out. 

Some of the terminal block 2 (TB2) screw positions had two wires attached from a single loom, but other had even more wires as both looms contributed ring terminals to the screw location. My pictures prior to disassembly don't always clearly show all the layers of wires and from which loom they came. 

To resolve this, I beeped out the connections using the schematics so that I confirmed that the wires on each TB2 screw were connected on the other end to the proper circuit or component. 

TERMINAL BLOCK 1 WIRING COMPLETED

Terminal block 1 (TB1) is much more complex, having many different cables attaching to it, rather than mostly wire in a loom. I do have pictures to help me with the routing of the wires, but in this case I definitely needed to trace all the ends that I tentatively assigned, ensuring they went to the proper destination. 

TB1 handles the higher voltage AC power that will drive the motor, gate blower, usage meter power supply, and convenience outlet. TB2 carries low voltage mostly DC power to the carriage motor, solenoids, logic gate, carriage control tape PCB, and timing disk lamp.