COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.CHAPTER 3ORIGINAL EXPOSURE SYSTEMThis chapter provides descriptions on the operations and the functions of thescanner drive mechanism and the original detection mechanism, relationshipbetween electrical and mechanical systems, and timing at which each associatedpart is turned on.I. OPERATIONS ............................ 3-1A. Outline ................................... 3-1B. Basic Sequence of Operations.............................................. 3-3C. Changing the Reproduction Ratio.............................................. 3-4II. SCANNER DRIVE SYSTEM ...... 3-5A. Outline ................................... 3-5B. Controlling the Scanner Motor.............................................. 3-6III. CONTROLLING THE SCANNINGLAMP .......................................... 3-8A. Outline ................................... 3-8B. Controlling the Temperature by aFluorescent Lamp Heater .... 3-10C. Controlling Pre-Heat Voltage............................................ 3-10D. Initial Activation ................... 3-11E. Detecting an Error ............... 3-12IV. DETECTING THE ORIGINAL SIZE................................................. 3-14A. Outline ................................. 3-14B. Detection by Original Sensors............................................ 3-14C. Detection by the Feeder ...... 3-14V. DISASSEMBLY/ASSEMBLY .... 3-15A. No. 1 Mirror Mount .............. 3-16B. Scanner Drive Assembly ..... 3-20C. PCBs ................................... 3-28D. Others .................................. 3-31
