Possible to bench test the 2310 disk drive (inside 1130 system)

DISK DRIVE HAS CE CONTROLS THAT ARE ACTIVE IF CONTROLLER CABLE REMOVED

The signal cable between the disk controller logic inside the 1130 and the disk drive proper can be removed. This allows the four switches to work, triggering movement of the disk arm and selecting between the two disk heads. 

The CE can then put a scope or logic analyzer on the data outputs to observe how the drive is reading data from the disk surface. It can also be used when the engineer aligns the heads so that they are positioned the same spot on a cartridge as any other 1130 system, ensuring interchangeability for cartridges between different 1130s. 

The drive must still have power connections. There is 115V to power the blower and spindle motors, but also the logic voltages of an 1130 system. It needs +3, -3, +6, +12 and +48V to operate. 

BENCH TESTING POSSIBLE WITH ENOUGH POWER SUPPLIES

I have plenty of power supplies on the workbench so that I can bring up the drive without any connection at all to an 1130 system. Power must be sequenced properly so that +48V is not applied until the three main logic voltages are correct and it must be removed before the others are switched off. This is the only caution for bench powering the drive.