IBM Y31-0069 2501 Card Reader FETOM Feb67 free download

File name Y31-0069_2501_Card_Reader_FETOM_Feb67.pdf

Field Engineering Theory of Operation Restricted Distribution 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 ~ A PREFACE 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 management. Third Edition This is a major revision of, and obsoletes, Y31-0068-1. The manual has been revised to incorporate changes to the 2501 logics and also to include information on the fiber optic read station. Significant changes or additions to the specifications contained in this publication will be reported in subsequent revisions or FE Supplements. This manual has been prepared by the IBM Systems Development Division, Product Publications, Department 245, Rochester, Minnesota 55901. A form has been provided at the back of this publication for reader's comments. If the form has been removed, send comments to the address above.