HP67 Card read error

[PANAMATIK]

(06-02-2017 05:49 AM)quaymat321234 Wrote:  Just received a beautifully restored HP67 but have a problem reading clipped cards.
They all (including the standard pack cards) give an error. Unclipped cards write and read without any problems. Anyone a suggestion?

Regards
Qmat

Perhaps the card reader motor has a slightly different speed than original and cannot read the prerecorded cards, but write and read new cards.

Bernhard