I bought a UK 'ex-army' HP41 card reader and calculator about 10 years ago. The HP41CV still works well but the card reader has never been tried - until today with my 'new' HP41CX.
It appears to write programmes OK but does not read them back - no error message shown (brand new cards being used). When I verify the cards I get the message "malfunction".
The card reader appears to take the cards through OK - sounds OK as well (what do I know I have never heard a working one!).
When I do'Catalog 2' the message "CARD RDR 1G" lists.
Any suggestions would be greatly appreciated - should I get the screwdrivers out yet?.
Thanks
Colin (in sunny Derbyshire UK)