User Guide

74 Chapter 4 - Operational overview EN
Basic functions
This chapter presents a functional overview of the HP LaserJet
3300mfp series. The following systems are discussed:
 formatter functions
 scanner and ADF functions and operation
 printer functions and operation
• ECU (engine controller unit) system/power system
• image formation system
• paper-feed system (printer) and document-feed system
(document scanner)
 LIU (fax) functions and operation
The full product consists of:
 the scanner (flatbed/ADF)
 the printer
 the line interface unit (LIU).
Each of these three systems brings its own characteristic functionality
to the product: scanning, printing, and telecommunications
respectively. In addition, these systems combine forces to complete
the functionality offering of the product.
 The scanner and printer work together to make copies.
 The scanner and LIU work together to send faxes.
 The LIU and printer work together to receive faxes.
Operation sequences of the printer are controlled by the ECU.
Operation sequences of the LIU and document scanner are
controlled by the formatter.