TI 59 Diagnostic Card Listing

[Tinue]

I had to perform a full restore, including a new roller and pressure pads. The old roller was dissolved all over the mechanism and quite hard to clean out.

I made a few tests, and it appears that many of the blank cards have deteriorated. When I write the "77" pattern and read it back, there are quite some errors even if the display does not blink after the read step. About half of the cards work fine though, so I guess the reader is ok.

The cards that I have written in the early 80ies are impossible to read, they all show an error after the card ran through the reader. I tried to make the reader faster and slower with the pot, but none of the settings worked.