Which resistance controls the card reader speed on a HP-97
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11-07-2017, 11:07 PM
Post: #6
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RE: Which resistance controls the card reader speed on a HP-97
Thank you all for your contribution.
I will try playing with the value of resistance R1 (using a variable resistance) and report the result. Now I only need to find where that resistance is located on the board. I will check the maintenance manual. However, I just find out that the cards written by the problematic HP-97 can be read on a HP-67... That means that the speed is not so much different after all... François |
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