Canon F91-4421 Service-Handbuch - Seite 4
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Seite druckenCHAPTER 1 : GENERAL DESCRIPTIONS
I.
SPECIFICATIONS ....................... 1-1
II. PARTS CONFIGURATION ........... 1-2
A. Front View .......................... 1-2
B. Rear View ............................ 1-2
III. SETTING UP THE SCANNER ...... 1-3
A. Precautions ......................... 1-3
CHAPTER 2 : OPERATION AND TIMING
I.
BASIC OPERATION .................... 2-1
A. Functions ............................ 2-1
B. Electrical System ................ 2-2
C. Main PCB Input and Output . 2-4
D. Basic Sequences of Operations
........................................... 2-5
II. OPTICAL SYSTEM ..................... 2-7
A. Scanning Lamp .................... 2-8
B. Motor Control ..................... 2-9
III. IMAGE PROCESSING ............... 2-10
A. Outline .............................. 2-10
B. Image Processing ............... 2-11
C. Calibration ........................ 2-13
D. Filter Processing ............... 2-14
E. Interpolation Processing .... 2-15
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CONTENTS
B. Unlocking the Scanning Unit 1-4
C. Connecting the Cables ......... 1-5
D. Scanning a Document .......... 1-6
IV. CUSTOMER'S DAILY MAINTENANCE
........................................... 1-7
F.
Averaging .......................... 2-16
G. Binary Processing .............. 2-17
H. Image Inversion
(negative/positive) ............ 2-18
IV. CONTROL SYSTEM .................. 2-19
A. Control System Diagram .... 2-19
B. Main PCB .......................... 2-19
V.
INTERFACE ............................. 2-20
A. Overview of the USB Standard
......................................... 2-20
B. Benefits of the USB Scanner
......................................... 2-20
C. Signal Definitions .............. 2-21
D. Interface Connection ......... 2-21
VI. POWER SUPPLY ....................... 2-22
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