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Contents
Safety Precautions
CDRH Act -----------------------------------------------------------------------0-2
Laser Safety --------------------------------------------------------------------0-2
Handling of Laser System --------------------------------------------------0-2
Turn power switch ON -------------------------------------------------------0-3
Power Supply ------------------------------------------------------------------0-3
Safety of Toner -----------------------------------------------------------------0-4
About Toner ------------------------------------------------------------------------- 0-4
Toner on Clothing or Skin -------------------------------------------------------- 0-4
Notes When Handling the Lithium and Ni-MH Batteries ------------0-4
Notes Before it Works Serving ---------------------------------------------0-4
1 Product Overview
Product Lineup -----------------------------------------------------------------1-2
Host machine ----------------------------------------------------------------------- 1-2
Host machine conguration -------------------------------------------------------------- 1-2
Model type ------------------------------------------------------------------------------------ 1-2
Option --------------------------------------------------------------------------------- 1-3
Pickup delivery / image reading options ---------------------------------------------- 1-3
Function expanding option --------------------------------------------------------------- 1-4
Feature --------------------------------------------------------------------------1-5
Product feature --------------------------------------------------------------------- 1-5
Specications ------------------------------------------------------------------1-6
Specications ----------------------------------------------------------------------- 1-6
Weight / Size ------------------------------------------------------------------------ 1-7
Productivity (Print speed) -------------------------------------------------------- 1-8
Paper type --------------------------------------------------------------------------- 1-8
Pickup ----------------------------------------------------------------------------------------- 1-8
Name of Parts ------------------------------------------------------------------1-9
External View ----------------------------------------------------------------------- 1-9
Cross Sectional View (550-sheet 1st cassete model) -------------------1-10
Cross Sectional View (250-sheet 1st cassette model) ------------------ 1-11
Operation ---------------------------------------------------------------------------1-12
Power Switch -------------------------------------------------------------------------------1-12
Description of Control Panel ------------------------------------------------------------1-12
2 Technology
Basic Conguration -----------------------------------------------------------2-2
Functional Conguration --------------------------------------------------------- 2-2
Basic sequence ----------------------------------------------------------------------------- 2-2
Original Exposure System --------------------------------------------------2-3
Construction ------------------------------------------------------------------------- 2-3
Specications/controls/functions -------------------------------------------------------- 2-3
Major Components ------------------------------------------------------------------------- 2-3
Reader relay PCB -------------------------------------------------------------------------- 2-4
Basic Sequence -------------------------------------------------------------------- 2-5
Basic Sequence at Power-On ----------------------------------------------------------- 2-5
Basic Sequence at Start Key ON (book mode/1 original) ------------------------ 2-5
Basic Sequence at Start Key ON (ADF mode/1 original) ------------------------- 2-6
Controls ------------------------------------------------------------------------------ 2-7
Controlling the Scanner Drive System ------------------------------------------------ 2-7
Contact Image Sensor (CIS) ------------------------------------------------------------- 2-8
Enlargement/Reduction ------------------------------------------------------------------- 2-9
Detecting the Size of Originals ---------------------------------------------------------2-10
Dirt Sensor Control ------------------------------------------------------------------------2-12
Image Processing -------------------------------------------------------------------------2-14
Service Operations --------------------------------------------------------------2-16
Action to take when replacing parts ---------------------------------------------------2-16
Consumables -------------------------------------------------------------------------------2-16
Service precautions -----------------------------------------------------------------------2-16
Controller System ----------------------------------------------------------- 2-17
Overview ----------------------------------------------------------------------------2-17
Functional Conguration -----------------------------------------------------------------2-17
Controls -----------------------------------------------------------------------------2-19
Flow of Image Data -----------------------------------------------------------------------2-19
Construction of the Image Processing Module -------------------------------------2-19
Reader Unit Input Image Processing -------------------------------------------------2-20
Compressio/ Extesion/ Editing Block -------------------------------------------------2-20