This page describes the IBM SMS card "AYJ", and is part of the SMS card database.

Function of the card:
Disk speed detector

Part number:372296

PCB number:399603

Used in:IBM 1311 Disk

Transistor type:026 033 083 084 086

References:
IBM 1311 ILD, p100.
This page created by Ken Shirriff, 2015.

The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.

Creation time: Tue Mar 03 23:40:32 2015.