Function of the card:
CTDL-Two Way “And” PNP No Loads
Two-Way-AND (no loads)
Ctdl two way and pnp no loads
Ctdl 2 way and pnp field replacement
Part number: 371263
Field replacement part number: 370975
Customer Eng reference number: 729820
PCB number: 528991
Image courtesy of Randall Neff
Image courtesy of Henk Stegeman
IBM Standard Modular System, Component Circuits, p42.
1_2 SMS Cards, p29,82.
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. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.