HP CM6030 Service Manual - Page 184
Basic operation, Sequence of operation
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Basic operation All high-level processes are routed through the formatter, which stores font information, processes the print image, and communicates with the host computer. Basic product operation can be divided into 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 ADF functions and operations Figure 5-1 Relationship between the main product systems LASER/SCANNER SYSTEM IMAGE-FORMATION SYSTEM ENGINE CONTROL SYSTEM PICKUP-AND-FEED SYSTEM OPTION SCANNER Sequence of operation The DC controller PCA controls the operating sequence, as described in the following table. For detailed information about the timing of the processes, see General timing chart on page 635. Table 5-1 Sequence of operation Period Duration Description Waiting From the time the power is turned on or ● when the product exits Sleep mode until the product is ready for printing ● Pressurizes the fuser pressure roller Detects the print cartridges and imaging drums 138 Chapter 5 Theory of operation ENWW
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