HP67-Card Reader - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: HP67-Card Reader (/thread-31105.html) |
HP67-Card Reader - Howard - 03-31-2003 Well - I've replaced the "gummy wheel" and the card pulls through OK. Re: HP67-Card Reader - David Smith - 03-31-2003 Have you cleaned the heads with 91% isopropyl alcohol? Also use the red colored head cleaning card. Also you might try demagnetizing the heads with a tape head demagnetizer.
Also check the head continuity. There are two windings. They should measure around 40 ohms. The black wire should measure zero ohms to the metal head case.
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