HP-65 card reader problems

[coitboy2000]

I finally got an opportunity to check a few things.

The motor does have torque when a voltage is applied directly at the terminals.

The 4k64 resistor appears fine, i desoldered it and checked it. Continuity between it and yhe moyor is fine also.

When powered up and using pin 7 on the sense chip as ground i get the following voltages

Pin 1 0v
Pin 2 0v
Pin3 0v
Pin4 to pin6 1.4v
Pin8 to pin 10 1.4v
Pin11 0v
Pin 12 to pin14 3.85v
Pin15 3.6v
Pin16 3.9v
Pin17 3.7v
Pin18 3.9v
Pin19 6.2v
PIn20 3.9v

Not surr if this sheds anyblight on the matter. When insert a card i see a small increase in voltage to the motor of 60mv ?

Richard