SERVICE
MANUAL
REVISION 0
FY8-13E8-000
JULY 1996
COPYRIGHT © 1996 CANON INC.
CANON NP6085 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
IMPORTANT
THE INFORMATION CONTAINED HEREIN IS PUBLISHED BY CANON, INC., JAPAN. SPECIFICATIONS
AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE
VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER.
ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE
COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
COPYRIGHT © 1996 CANON INC.
Printed in Japan
Imprimé au Japon
Use of this manual should be
strictly supervised to avoid
disclosure
of
confidential
information.
Prepared by
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPT.1
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIV.
CANON INC.
30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 146 Japan
COPYRIGHT © 1996 CANON INC.
CANON NP6085 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
This Service Manual provides basic facts and figures needed to service the plain paper copier NP6085
in the field. The NP6085 is designed to enable automated copying work and may be configured with the
following system components:
1. Stapler Sorter-E2
2. RDF-D1
3. Computer Form Feeder-A2 (C.F.F.)
For descriptions on the RDF-D1 and the Stapler Sorter-E2, see their respective service manuals. This
manual covers the NP6085 and the C.F.F.
This Service Manual is organized as follows:
CHAPTER 1, "General Introduction," shows the NP6085's features, specifications, and step-by-step
instructions on how to operate the copier.
CHAPTER 2, "Copying Processes," shows how the NP6085 generates copies while discussing each
of the steps involved.
CHAPTER 3, "Operations and Timing," explains the NP6085's mechanical system by function and
principles behind its electrical systems in relation to timing of each operation.
CHAPTER 4, "Mechanical System," explains how to disassemble/assemble and adjust the NP6085.
CHAPTER 5, "Installation," provides points to note when selecting the site of installation and
instructions on how to install the NP6085.
CHAPTER 6, 'Maintenance and Inspection," provides tables of periodically replaced parts and
consumables/durables as well as a scheduled servicing chart.
APPENDIX contains a general timing chart, general circuit diagrams, and PCB diagrams.
This Service Manual is accompanied by the Service Handbook, which contains information on how to
maintain and inspect the NP6085 through adjustment and troubleshooting work.
Information found in this manual may be updated from time to time for product improvement, and major
updates are communicated in the form of Service Information bulletins.
All service persons are expected to be thoroughly familiar with the contents of this Service Manual, the
Service Handbook, and Service Information bulletins and be ready to respond to the needs of the user
promptly.
INTRODUCTION
COPYRIGHT © 1996 CANON INC.
CANON NP6085 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
System Configuration
The NP6085 is designed to accommodate the following accessory:
C.F.F.-A2 (Computer Form Feeder)*
Feeds continuous paper (computer forms)
automatically and continuously on a page basis.
RDF-D1
Feeds a stack of up to 100 originals
to the copyboard for copying.
Control Card V*
Provides an efficient means of controlling
the volume of copying work.
Stapler Sorter-E2
Sorts and groups up to 20 sets of copies automatically.
It is also equipped with a function to staple sorted copies
automaticallywith the help of its multiple stacking function,
one set of copies may be delivered to a single bin.
COPYRIGHT © 1996 CANON INC.
CANON NP6085 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
I.
BASIC OPERATION ..............................3-1
II.
EXPOSURE SYSTEM.........................3-30
III.
IMAGE FORMATION SYSTEM ...........3-50
IV.
PICK-UP/FEEDING SYSTEM .............3-81
V.
CONTROL PANEL.............................3-147
VI.
FANS .................................................3-150
VII.
POWER SUPPLY ..............................3-153
VIII.
C.F.F. (COMPUTER FORM FEEDER) ...3-159
IX.
SPECIFICATION AND
ADJUSTMENT ..................................3-172
X.
SERVICE MODE ...............................3-180
XI.
SELF DIAGNOSIS.............................3-251
COPYRIGHT © 1996 CANON INC.
CANON NP6085 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
CONTENTS
CHAPTER 1 GENERAL INTRODUCTION
I.
FEATURES ............................................1-1
II.
SPECIFICATIONS .................................1-2
III.
NAMES OF PARTS ...............................1-9
IV.
OPERATION ........................................1-13
V.
WARNINGS AND ACTIONS
TO TAKE ..............................................1-27
VI.
ROUTINE WORK BY THE USER .......1-35
CHAPTER 2 COPYING PROCESSES
I.
IMAGE FORMATION .............................2-1
II.
AUXILIARY PROCESSES.....................2-9
CHAPTER 3 OPERATIONS AND TIMING
CHAPTER 4 MECHANICAL SYSTEM
I.
EXTERNALS .........................................4-1
A. External Covers ................................4-1
B. Control Panel....................................4-4
C. Door Switch Assembly .....................4-5
D. Fans..................................................4-6
E. Removing the Power Supply
Cord Mount.....................................4-12
F. Removing the Counter Assembly...4-13
II.
DRIVE SYSTEM..................................4-14
A. Scanner Drive Assembly ................4-14
B. Lens Drive Assembly......................4-17
C. Drum Motor Assembly....................4-19
D. Pick-Up Motor Assembly ................4-20
E. Fixing Motor Assembly ...................4-21
F. Drum/Developing Drive Assembly..4-21
G. Pick-Up Drive Assembly .................4-22
H. Front Tray Drive Assembly..............4-27
I. Front Tray Lifter Motor Assembly....4-27
J. Fixing Relay Drive Assembly..........4-28
K. Fixing Buffer Drive Assembly .........4-28
L. CW/CCW Rotation Roller ...............4-30
III.
PICK-UP/FEEDING SYSTEM .............4-32
A. Multifeeder Assembly .....................4-32
B. Paper Deck Assembly ....................4-35
C. Front Tray Assembly .......................4-38
D. Pick-Up Vertical Path Roller
Assembly ........................................4-43
E. Feeding Assembly ..........................4-46
F. No. 2 Feeding Assembly.................4-50
G. Duplexing Unit ................................4-52
H. Buffer Assembly .............................4-57
IV.
EXPOSURE SYSTEM.........................4-61
A. Scanning Lamp Assembly..............4-61
B. Standard White Plate Assembly .....4-62
C. Pre-Exposure Lamp Assembly.......4-63
D. Blank Exposure Lamp Assembly....4-63
V.
CHARGING ASSEMBLY .....................4-64
A. Photosensitive Drum ......................4-64
B. Potential Sensor Assembly.............4-70
C. Primary Charging Assembly...........4-70