Finisher Power Supply Protection; Punch Unit Power Supply Protection - Xerox Paser 7400 Service Manual

Finisher Power Supply Protection

A circuit breaker (CB1) is available to protect the 24 VDC system that drives the
motors against overcurrent conditions. The 24 VDC system drives the feed motor,
paddle motor, and delivery motor.

Punch Unit Power Supply Protection

After the printer is powered ON, the Finisher Controller Board supplies the punch
unit with 24 VDC and 5 VDC power. The 24 VDC power drives the motors, while the
5 VDC power supplies the associated sensors and ICs on the Punch Controller Board.
The 24VDC power to the motors is removed if the joint switch (MS2) or the Front
Door (Door J) switch (MS1) of the Finisher is open.
2-42 Phaser 7400 Color Printer Options Service Manual