Basic operation
The product routes all high-level processes through the formatter, which stores font information,
processes the print image, and communicates with the host computer.
The basic product operation comprises the following systems:
●
The engine-control system, which includes the power supply and the DC controller PCA
●
The laser/scanner system, which forms the latent image on the photosensitive drum
●
The image-formation system, which transfers a toner image onto the paper
●
The paper pickup-and-feed system, which uses a system of rollers and belts to transport the
paper through the product
●
Scanner and document feeder functions and operations
●
Accessories
Figure 1-1 Relationship between the main product systems
PICKUP-AND-FEED SYSTEM
LASER/SCANNER SYSTEM
ENGINE CONTROL
SYSTEM
IMAGE-FORMATION SYSTEM
OPTION
SCANNER (M855 only)
2 Chapter 1 Theory of operation ENWW
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