Hp-41C card reader - dead

[teenix]

(05-20-2022 09:26 PM)Vintage63 Wrote:  these are the 'forks', that are pressed by the PCB. how are they used by the reader

They detect when a card is inserted into the module and allow the inbuilt CPU to control the read write process. If they are faulty, the system won't work properly. They are delicate and care should be taken not to bend them out of shape if cleaning is required.

cheers

Tony