Sunday, November 10, 2024

Wrapping up disk drive work, ready to install back in the IBM 1130

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VERIFIED WRITE LOGIC AND WRITE CLOCK OUTPUT The 2310 drive is formally called the 13SD and had the project name Ramkit. It is installed insi...

Evaluating possible SLT card socket to eliminate need for donor cards

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ORDERED HOUSING THAT SHOULD BE COMPATIBLE WITH SLT BACKPLANES Conor Krukosky had found a housing that appears to fit, as he has a long term ...
Saturday, November 9, 2024

Replacing the head connector required excavation to determine the coil wiring; successful conclusion

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DUG OUT THE CONNECTOR TO FIGURE OUT WHICH WIRES GO TO EACH PIN I know from the documentation about the wires from the SLT card compartment o...
2 comments:

Replacement 5806223 card finished and being tested in the 1130

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FINISHED ALL JUMPER WIRE TESTING OF THE STACKED PCB + DONOR SLT CARD Making sure the card was properly connected required me to beep out eac...

Disk heads cleaned and reinstalled on the IBM 1130 internal disk drive, but too rough to be used

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CLEANING HEAD SURFACES IN PREPARATION FOR FIRST ATTEMPT TO FLY ON PLATTER The heads must be completely clean, free of any oxide or other bui...
Thursday, November 7, 2024

Parts arrived, finally got drive startup and arm seeking to work

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SWISS ARMY KNIFE OF TIME DELAY RELAYS BEING USED This device cost just over $22 and provides a very wide range of solutions, including of co...
Wednesday, November 6, 2024

Working on drive speed detection circuit issue

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CONTINUING TO WORK ON THE DRIVE ON THE BENCH Here is my drive bench - the drive, multiple power supplies, and the oscilloscope to observe th...