1-74 Service Manual
4025-XXX
E-
Earth Electrical ground
Earth Plate Electrical ground plate or ground strap
Engine Board The board that controls the operation of the printer, synonym
for MCU and MCU PWB
EP Cartridge A sealed assembly that houses the xerographic drum, major
xerographic components, and a finite supply of dry ink. The
EP Cartridge is a CRU.
Error Code A unique set of letters and numbers that the printer control
system displays to indicate that a problem exists in a specific
area of the printer
ESS Electronic Subsystem. Synonym for the Controller PWB and
Controller Board
Exposure The action of the laser beam striking and discharging select
areas of the electrically charged surface of the drum
F-
°F Degrees Fahrenheit. °F = (°C x 1.8) + 32
Face Down Tray Standard output tray for the printer. Delivers paper face down.
Factory default An operational value or parameter that is set at the time of
equipment manufacture
FG Frame Ground
FRU Field Replaceable Unit
Fuser The printer subsystem that uses heat and pressure to
permanently adhere, or fuse, a transferred toner image to a
sheet of paper
G-
Ground Electrical ground
H-
Harness A bundle of wires that form a single unit and generally
terminated with connectors at both ends
HCF High Capacity Feeder
High (signal) A signal voltage that is equal to or almost equal to the base
voltage; such as +5VDC or +24VDC.
HS High Speed
HVPS High Voltage Power Supply
I-
Image density The relative darkness of the toner image on a sheet of paper
Image development Toner turning the latent image into a visible image.
Image fusing Using heat and pressure to permanently adhere the toner
image to a sheet of paper
Image transfer Moving the developed image from the surface of the drum to
the surface of a sheet of paper
Input test Diagnostic routine that is used to test switches and sensors
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