Xerox Phaser 6128MFP Service Manual page 86

Theory of Operation
Interlock Switch
Toner Access Door Switch
GFI Breaker
Data Flow
2-32
The Interlock Switch is a switch that interrupts the supply of +24 VDC power to the
HVPS or Motor upon the opening of the Front Cover.
A switch that detects when the Toner Access Door is open.
Opens to shut off the AC power if it detects any voltage or current or leakage
current that exceeds the rating of the AC power supply.
The electrical signal flow for the print data from the printer I/P Board is shown in
the following diagram.
Computer
I/P Board Electronic Sub-system Control Board (Electric Signal)
MCU Board
Machine Control Unit (Electric Signal)
Laser Unit
Imaging Unit
Electrostatic Latent On Drum (Invisible Image)
Imaging Unit
Transfer Belt
Fuser
Host (Electric Signal)
Laser Unit (Laser Beams)
Toner Image On Drum
Toner Image On Paper
Print Image On Paper
Phaser 6128MFP Service Manual
s6128-034