Canon NP6320 Service Manual page 39

EXPOSURE SYSTEM
1. Disconnect the power cord for safety before disassembly or reassembly work.
2. Group the screws by type (length and diameter) and location.
3. The mounting screws are equipped with washers to protect against static
electricity; do not leave them behind when attaching the covers.
4. The mounting screw for the grounding wire is equipped with a washer to ensure
electrical continuity; make sure that the washer is attached to the screw when
removing/fitting it.
5. If possible, avoid operating the machine with any of its parts removed.
6. Unless otherwise noted, re-assembly is the reverse of disassembly.
I. BASIC OPERATION .................... 3-1
A. Changing the Reproduction
Ratio ...................................... 3-1
II. LENS DRIVE SYSTEM ................ 3-2
A. Outline ................................... 3-2
B. Basic Lens Drive System
Operation (change of
reproduction ratio) ................. 3-4
III. SCANNER DRIVE SYSTEM ....... 3-5
A. Outline ................................... 3-5
B. Relation Between Scanner
Sensor and Signals ...............3-6
COPYRIGHT © 1999 CANON INC.
CHAPTER 3
IV. DISASSEMBLY AND
CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. Basic Scanner Operation ......3-7
D. Scanner Motor Drive System
Operation ..............................3-8
E. Scanner Movement for Two-
Page Separation Mode
(copy count 2) .................... 3-10
F. Document Size
Identification ....................... 3-11
ASSEMBLY ............................... 3-14
A. Lens Drive Assembly ......... 3-14
B. Scanner Drive Assembly .... 3-16