M941

This document is a schematic for a JUMPER/EXTENDER BOARD M941, produced by Digital Equipment Corporation in 1970.

Key information includes:

• Purpose: It is furnished for test and maintenance purposes only, and the circuits are proprietary.
• Design: The schematic details numerous pin-to-pin connections for a "CONNECTOR 7900-0155-0". Most connections are straight-through, but specific pairs of pins (e.g., T2-S2, R2-V2, U2-P2, M2-L2, K2-J2, H2-F2, E2-D2) are shown to be jumpered or connected together.
• Identification: The board number is M941-0-1, and its printed circuit revision is "A".
• Authorship & Dates: It was drawn by Nancy Moore on April 14, 1970, with subsequent checks and approvals through May 27, 1970.
• Additional Information: A blank "TRANSISTOR & DIODE CONVERSION CHART" is also present.