The Museum of HP Calculators

HP Forum Archive 17

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Message #1 Posted by TIM on 26 May 2007, 10:43 p.m.

Does anyone know the order of the wires from the magnetic head to the circuit board? Does anyone have a picture?

Re: Hp-67
Message #2 Posted by Randy on 27 May 2007, 10:36 a.m.,
in response to message #1 by TIM

There are two different board patterns, the early version where the wires where soldered in, the later version where they where in small sockets.

The soldered:

red blu

The socketed:

blu blk yel red org

Beware of older units with the wires exiting the head that are covered by a blob of RTV. Too much stress and or flexing and the wires can break off at the head.

Edited: 27 May 2007, 10:39 a.m.

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