4-100ma Solenoid Driver M044

This document is a technical schematic for a Digital Equipment Corporation solenoid driver module (M044). It details the circuitry for four identical driver channels, each utilizing a DEC 7401N integrated circuit, a DEC 3009B transistor, a 2N2904A transistor, various diodes (D672), and resistors. The schematic is intended for test and maintenance purposes and includes basic specifications for components, such as transistor and diode pin configurations and voltage requirements (+5V).