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66 Functional overview
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Basic functions
This chapter presents a functional overview of the HP LaserJet 3100/
3150 product’s processes. The following systems are discussed:
● optical system (document scanner)
● ECU (engine controller unit) system/power system
● formatter system
● image formation system
● paper feed system (printer) and document feed system
(document scanner)
● laser/scanner system
● telecommunications system/line interface unit (LIU)
The HP LaserJet 3100/3150 product consists of the printer and the
document scanner. Operation sequences of the printer are controlled
by the ECU. Operation sequences of the document scanner are
controlled by the video controller.
Figure 7. Basic configuration
FORMATTER