IBM 1401 Diagnostics Manual

Quarter size

Grey-scale images at 75dpi for e.g. reading in a browser.

Full size

Black and white images at 300dpi as scanned, suitable for printing.
Here are also tar files of the quarter size pages (gif) and the HTML files that organize them.

Text of selected diagnostics

These two diagnostics have been transcribed into ASCII from the load-card pages of their diagnostic manual sections. Back
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