COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)CONTENTSI. FEATURES ..................................... 1-1II. SPECIFICATIONS ........................... 1-2III. EXTERIOR FEATURES .................. 1-5A. Front View ............................... 1-5B. Rear View ................................. 1-5IV. INSTALLATION .............................. 1-7A. Preface ..................................... 1-7B. Installation .............................. 1-8C. Connecting to the HostComputer ................................ 1-9D. Scanning a Document ........... 1-12V. CUSTOMER’S DAILY MAINTENANCE................................................ 1-13CHAPTER 2 : OPERATION AND TIMINGCHAPTER 1 : GENERAL DESCRIPTIONSI. BASIC OPERATION ........................ 2-1A. Functions ................................ 2-1B. Outline of ElectricalSystem ..................................... 2-2C. Main PCB Input and Output ... 2-4D. Basic Sequences of CanoScanFB330P/FB63OP ...................... 2-6E. Basic Sequences of CanoScanFB630U/FB636U ................... 2-19II. OPTICAL SYSTEM ....................... 2-26A. Outline .................................. 2-26B. CanoScan FB330P/FB630PDocument Scanning Sequence............................................... 2-27C. CanoScan FB630U/FB636UDocument Scanning Sequence............................................... 2-28D. Contact Image Sensor ........... 2-29E. Scanning Unit Drive MotorControl Circuit ...................... 2-32III. IMAGE PROCESSING SYSTEM .... 2-33A. Outline .................................. 2-33B. Image ProcessingFunctions .............................. 2-34IV. CONTROL SYSTEM ..................... 2-38A. CanoScanFB330P/FB630P ..................... 2-38B. CanoScanFB630U/FB636U .................... 2-40V. POWER SUPPLY ........................... 2-42A. CanoScanFB330P/FB630P ..................... 2-42B. CanoScanFB630U/FB636U .................... 2-43