Table Of Contents - Canon H1 Service Manual

Contents
0
Safety Precautions
Notes Before it Works Serving ---------------------------------------------0-8
Points to Note at Cleaning --------------------------------------------------0-8
1
Product Outline
Original Exposure System (Reader) -------------------------------------1-2
Features (Reader) ----------------------------------------------------------------- 1-2
Specifications (Reader) ------------------------------------------------------1-2
Specifications -------------------------------------------------------------------------------- 1-2
Names of Parts (Reader) ---------------------------------------------------1-3
External View -------------------------------------------------------------------------------- 1-3
Cross Section -------------------------------------------------------------------------------- 1-3
Major Components ------------------------------------------------------------------------- 1-3
Reader Relay PCB ------------------------------------------------------------------------- 1-4
Features (DADF) --------------------------------------------------------------1-5
Specifications (DADF) -------------------------------------------------------1-5
Names of Parts (DADF) -----------------------------------------------------1-5
External View ----------------------------------------------------------------------- 1-5
Cross Section ----------------------------------------------------------------------- 1-5
2
Technology
Controls (Reader) -------------------------------------------------------------2-2
Basic Sequence ----------------------------------------------------------------------------- 2-2
Controlling the Scanner Drive System ------------------------------------------------ 2-3
CCD Unit -------------------------------------------------------------------------------------- 2-4
Enlargement/Reduction ------------------------------------------------------------------- 2-6
Detecting the Size of Originals ---------------------------------------------------------- 2-6
Dirt Sensor Control ------------------------------------------------------------------------2-10
Image Processing ------------------------------------------------------------------------- 2-11
Color offset correction in sub scanning ----------------------------------------------2-13
Servicing (Reader) ------------------------------------------------------------------- 2-14
Periodically Replaced Parts -------------------------------------------------------------2-14
Consumable Parts -------------------------------------------------------------------------2-14
Periodical Servicing -----------------------------------------------------------------------2-14
Action to take when replacing parts ---------------------------------------------------2-14
Major Adjustments -------------------------------------------------------------------------2-14
Troubleshooting ----------------------------------------------------------------------------2-14
Basic Configuration (DADF) ---------------------------------------------- 2-15
Component Configuration ------------------------------------------------------2-15
Outline of Electric Circuits ---------------------------------------------------------------2-15
Drive Configuration ---------------------------------------------------------------2-15
Sensor Layout ------------------------------------------------------------------------------2-16
Outline of Operation Modes ----------------------------------------------------2-16
Outline ----------------------------------------------------------------------------------------2-16
Forward Pickup/Delivery Operation ---------------------------------------------------2-16
Forward Pickup/Reverse Delivery Operation ---------------------------------------2-17
Controls (DADF) ------------------------------------------------------------- 2-19
Document Detection -------------------------------------------------------------2-19
Outline ----------------------------------------------------------------------------------------2-19
Initial Document Size Detection --------------------------------------------------------2-20
Document Pickup/Separation --------------------------------------------------2-21
Basic Pickup Operation ------------------------------------------------------------------2-21
Pickup Unit and Stopper -----------------------------------------------------------------2-22
Document Reversing -------------------------------------------------------------2-22
Basic Operation ----------------------------------------------------------------------------2-22
Document Feeding/Delivery ----------------------------------------------------2-23
Basic Operation ----------------------------------------------------------------------------2-23
Release Operation ------------------------------------------------------------------------2-24
Detecting Jams --------------------------------------------------------------------2-24
Jams ------------------------------------------------------------------------------------------2-24
Power Supply ----------------------------------------------------------------------2-25
Power Supply -------------------------------------------------------------------------------2-25
Stamp Operation ------------------------------------------------------------------2-25
Outline ----------------------------------------------------------------------------------------2-25
Fan -----------------------------------------------------------------------------------2-26
Fan Operation ------------------------------------------------------------------------------2-26
Work of service (DADF) --------------------------------------------------- 2-27
When replacing the parts -------------------------------------------------------2-27