Canon CANOSCAN FB1210U Service Manual

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COPYRIGHT © 2000 CANON INC. CANOSCAN FB1210U REV.0 APR. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 2OPERATION AND TIMINGI. BASIC OPERATION .................... 2-1A. Functions ............................ 2-1B. Electrical System ................ 2-2C. Main PCB Input and Output . 2-4D. Basic Sequences of Operations........................................... 2-5II. OPTICAL SYSTEM ..................... 2-7A. Scanning Lamp .................... 2-8B. Motor Control ..................... 2-9III. IMAGE PROCESSING ............... 2-10A. Outline .............................. 2-10B. Image Processing ............... 2-11C. Calibration ........................ 2-13D. Filter Processing ............... 2-14E. Interpolation Processing .... 2-15F. Averaging .......................... 2-16G. Binary Processing .............. 2-17H. Image Inversion(negative/positive) ............ 2-18IV. CONTROL SYSTEM ............ 2-19A. Control System Diagram .... 2-19B. Main PCB .......................... 2-19V. INTERFACE ............................. 2-20A. Overview of the USB Standard......................................... 2-20B. Benefits of the USB Scanner......................................... 2-20C. Signal Definitions .............. 2-21D. Interface Connection ......... 2-21VI. POWER SUPPLY ....................... 2-22