|Y31-0069_2501_Card_Reader_FETOM_Feb67.pdf|| Field Engineering
Theory of Operation
Th is manual is intended for internal use only and may not be used
by other than IBM personnel without IBM's written permission.
Specifications contained herein are subject to change without
notice. Revisions and/or supplements to this publication will
be issued periodically.
~ ~ @ Card Reader Model
This manual explains the operation of the IBM 2501
Card Reader Model A. Maintenance information is
in the IBM 2501 Field Engineering Maintenance
Manual, Form Y31-0069. Attachment circuits are
explained in the Attachment Manual, Form Z26-5974.
RESTRICTED DISTRIBUTION: This publication is intended for use by IBM personnel
only and may not be made available to others without the approval of local IBM