Canon NP6330 User manual

SERVICE
MANUAL
REVISION 0
FY8-13EZ-000
MAY 1997
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

IMPORTANT
THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE OF
REFERENCE FOR WORK IN THE FIELD.
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.
THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS, AND MAY CONTAIN
INFORMATION NOT APPLICABLE TO CERTAIN AREAS.
COPYRIGHT © 1997 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.
5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302, Japan
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

This Service Manual provides the basic facts and figures about the plain paper
copier NP6330 needed for servicing it in the field.
The NP6330 is designed to enable full automation of copying work, and may be
configured with various accessories.
(For detailed descriptions of sorters, ADFs, RDFs, and controllers, see their
respective Service Manuals.)
This Service Manual covers the NP6330 and the pedestal, and is organized as
follows:
Chapter 1
General Description introduces the copier’s features and specifications,
shows how to operate the copier, and explains how copies are made.
Chapter 2
Operations And Timing discusses how the functions of the mahine
work and provides outlines of electric circuitry and sequence of operations.
Chapter 3
Exposure System discusses the principles of operation used for the
copier’s lens drive unit and scanner drive unit. It also explains the timing at which
these drive units are operated, and shows how they may be disassembled/assembled
and adjusted.
Chapter 4
Image Formation System discusses the principles of how images are
formed. It also explains the timing at which the various units involved in image
formation are operated, and shows how they may be disassembled/assembled and
adjusted.
Chapter 5
Pick-Up/Feeding System explains the principles used from when copy
paper is picked up to when a copy is delivered in view of the functions of electrical and
mechanical units and in relation to their timing of operation. It also shows how these
units may be disassembled/assembled and adjusted.
Chapter 6
Fixing System explains the principles used to fuse toner images to
transfer media in view of the functions of electrical and mechanical units and in relation
to their timing of operation. It also shows how these units may be
disassembled/assembled and adjusted.
Chapter 7
Controls And Externals shows the copier’s external parts, and explains
the principles used for the copier’s various control mechanisms in view of the functions
of electrical and mechanical units and in relation to their timing of operation. It also
shows how these units may be disassembled/assembled and adjusted.
Chapter 8
Paper Deck Pedestal explains the principles of operation of the paper
deck pedestal in view of electrical and mechanical units and in relation to their timing
of operation. It also shows how the unit may be disassembled/assembled and
adjusted.
INTRODUCTION
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
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Chapter 9 Installation introduces requirements for the site of installation, and
shows how the copier may be installed using step-by-step instructions.
Chapter 10
Maintenance and Inspection provides tables of periodically replaced
parts and consumables/durables and scheduled servicing charts.
Chapter 11
Troubleshooting provides tables of maintenance/inspection,
standards/adjustments, and problem identification (image fault/malfunction).
Appendix contains a general timing chart and general circuit diagrams.
The following rules apply throughout this Service Manual:
1. Each chapter contains sections explaining the purpose of specific functions and
the relationship between electrical and mechanical systems with reference to the
timing of operation.
In the diagrams, represents the path of mechanical drive—where a
signal name accompanies the symbol , the arrow indicates the direction
of the electric signal.
The expression “turn on the power” means flipping on the power switch, closing
the front door, and closing the delivery door, which results in supplying the copier
with power.
2. In the digital circuits, ‘1’ is used to indicate that the voltage level of a given signal
is “High,” while ‘0’ is used to indicate “Low.” (The voltage value, however, differs
from circuit to circuit.)
In practically all cases, the internal mechanisms of a microprocessor cannot be
checked in the field. Therefore, the operations of the microprocessors used in the
copiers are not discussed: they are explained in terms of from sensors to the input
of the DC controller PCB and from the output of the DC controller PCB to the
loads.
The descriptions in this Service Manual are subject to change without notice for
product improvement or other reasons, and major changes will be communicated in
the form of
Service Information bulletins.
All service persons are expected to have a good understanding of the contents of
this Service Manual and all relevant Service Information bulletins and be able to
identify and isolate faults in the copier.
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
ii

System Configuration
The NP6330 may be configured with the following accessory:
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
iii
Stapler Sorter-D2/MS-B1
Automatically sorts (page
collation) and groups up to 10
sets of copies.
In addition to sorter functions,
is equipped with stapler sorter
functions which automatically
staple sorted copies. (Not
applicable to MS-B1.)
ADF-E1
Feeds a stack of originals one by
one to the copyboard for copying.
RDF-F1
Feeds a stack of originals one by
one to the copyboard for copying.
In addition, automatically turns
over each two-sided original.
Paper Deck Pedestal-M1
(1 paper deck)
Adds 1500 sheets of
paper.
Sorter-E1
Automatically sorts (page
collation) and groups up to 20
sets of copies.

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
v
CONTENTS
CHAPTER 1 GENERAL DESCRIPTION
CHAPTER 2 OPERATIONS AND TIMING
I. FEATURES.........................................1-1
II. SPECIFICATIONS..............................1-2
A. Copier............................................1-2
1. Type..........................................1-2
2. System .....................................1-2
3. Performance.............................1-3
B. Paper Deck Pedestal-M1 ..............1-8
III. NAMES OF PARTS............................1-9
A. Exterior View .................................1-9
B. Cross Section................................1-11
1. Body Cross Section..................1-11
2. Paper Deck Pedestal-M1 .........1-12
IV. OPERATION.......................................1-13
A. Control Panel (AB/Inch).................1-13
B. Control Panel (Inch) ......................1-14
C. User Mode.....................................1-17
1. Specifications ...........................1-17
2. Adjustment/Cleaning ................1-19
V. ROUTINE MAINTENANCE
BY THE USER ...................................1-20
VI. IMAGE FORMATION..........................1-21
A. Outline...........................................1-21
B. Static Latent Image Formation
Block..............................................1-23
C. Pre-Exposure (step 1)...................1-23
D. Primary Charging (step 2).............1-24
E. Image Exposure (step 3)...............1-24
F. Development (step 4)....................1-25
G. Transfer (step 5)............................1-26
H. Separation (step 6)........................1-27
I. Fixing (step 7)................................1-28
J. Drum Cleaning (step 8).................1-28
VII. AUXILIARY PROCESS......................1-29
A. Blank Exposure .............................1-29
I. BASIC OPERATION...........................2-1
A. Functional Construction.................2-1
B. Outline of the
Electrical Circuitry..........................2-2
C. Basic Sequence ............................2-4
1. Basic Sequence of Operation ..2-4
D. Controlling the Main Motor............2-6
1. Outline......................................2-6
2. Operation..................................2-6
E. Inputs to the DC Controller............2-8
1. Input to the
DC Controller (1/5)...................2-8
2. Input to the
DC Controller (2/5)...................2-9
3. Input to the
DC Controller (3/5)...................2-10
4. Input to the
DC Controller (4/5)...................2-11
5. Input to the
DC Controller (5/5)...................2-12
F. Outputs from the DC Controller.....2-13
1. Output from the
DC Controller (1/5)...................2-13
2. Output from the
DC Controller (2/5)...................2-14
3. Output from the
DC Controller (3/5)...................2-15
4. Output from the
DC Controller (4/5)...................2-16
5. Output from the
DC Controller (5/5)...................2-17
G. Inputs to and Outputs from the
Accessories (1/1)...........................2-18

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
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CHAPTER 4 IMAGE FORMATION SYSTEM
I. PROCESSES .....................................4-1
A. Outline...........................................4-1
B. Basic Sequence of Operations
(image formation) ..........................4-2
C. Controlling the Scanner Lamp.......4-3
1. Outline......................................4-3
2. Turning On and Off the
Scanning Lamp ........................4-4
3. Detecting the Activation of the
Scanning Lamp ........................4-4
4. Protection Mechanism..............4-4
D. Controlling the Primary/
Transfer Corona Current
and the Grid Bias ..........................4-5
1. Outline......................................4-5
2. Controlling the Primary/Transfer
Corona Current.........................4-6
3. Keeping the Primary/Transfer
Corona Current at a Specific
Level.........................................4-7
4. Turning On and Off the
Grid Bias...................................4-8
E. Controlling the Static Eliminator
Bias/Fixing Roller Bias ..................4-9
1. Outline......................................4-9
2. Turning ON/OFF the Static
Eliminator Bias/Fixing Bias.......4-10
3. Switching the Output of the
Static Eliminating Bias..............4-10
4. Preventing Separation Faults
(thin paper picked up from
the multifeeder) .......................4-10
F. Controlling the Developing Bias....4-11
1. Outline......................................4-11
2. Turning On and Off DC
Component of the Developing
Bias and Controlling the
Voltage Level............................4-12
3. Turning On and Off the AC
Component of the
Developing Bias .......................4-13
4. Sequence of Operations
(developing bias).....................4-13
G. Controlling Blank Exposure...........4-14
1. Outline......................................4-14
2. Operation..................................4-15
3. Controlling the Slide Shutters...4-15
H. Mesuring the Density of
Originals ........................................4-16
1. Outline......................................4-16
2. Operation..................................4-17
3. AE Adjustment..........................4-18
I. Cleaning the Transfer Charging
Wire...............................................4-19
1. Outline......................................4-19
2. Operation..................................4-19
II. DEVELOPING ASSEMBLY/
DRUM CLEANER...............................4-21
I. BASIC OPERATION...........................3-1
A. Varying the Reproduction Ratio.....3-1
II. LENS DRIVE SYSTEM ......................3-2
A. Movement of the Lens...................3-2
1. Outline......................................3-2
2. Lens Motor Drive Circuit...........3-4
3. Focusing...................................3-5
III. SCANNER DRIVE MECHANISM.......3-6
A. Driving the Scanner.......................3-6
1. Outline......................................3-6
2. Scanning Motor Control Circuit ..3-7
3. Relationship between Scanner
Sensor and Signals..................3-10
4. Sequence of Scanner
Movements (Enlarge/Reduce) ..3-10
5. Sequence of Scanner
Movements (page separation
mode, 2 copies)........................3-11
IV. OTHERS.............................................3-13
A. Controlling the Detection of
Original Sizes.................................3-13
1. Outline......................................3-13
2. Operation..................................3-15
3. Identifying the Size of Originals ..3-16
4. Identifying the Size of Originals
by the Document Feeder..........3-17
V. DISASSEMBLY AND ASSEMBLY......3-19
A. Scanner Drive Assembly...............3-19
1. Removing the Scanner Motor ..3-19
2. Outline of the Scanner
Drive Cable...............................3-20
3. Removing the Scanner
Drive Cable...............................3-21
4. Routing the Scanner Cable......3-26
B. Lens Drive Assembly.....................3-30
1. Removing the Lens Motor........3-30
2. Attaching the Lens Drive Belt...3-31
3. Removing the Lens hood ..........3-32
CHAPTER 3 EXPOSURE SYSTEM

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
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CHAPTER 5 PICK-UP/FEEDING SYSTEM
I. PICK-UP/FEEDING SYSTEM............5-1
A. Outline...........................................5-1
II. PICK-UP FROM THE CASSETTE.....5-3
A. Pick-Up Operation.........................5-3
1. Outline......................................5-3
2. Sequence of Pick-Up
Operations................................5-5
B. Movement of the Cassette Lifter...5-6
C. Identifying the Size of
Copy Paper ...................................5-8
1. Outline......................................5-8
2. Identifying the Size of Copy
Paper........................................5-8
3. Markings on the Width Guide
Rail ...........................................5-10
4. Paper Size................................5-11
5. Registering Paper Width Basic
Values.......................................5-12
III. PICK-UP FROM THE
MULTIFEEDER...................................5-13
A. Pick-Up Operation.........................5-13
1. Outline......................................5-13
2. Identifying the Size of Paper
on the Multifeeder ....................5-14
3. Sequence of Multifeeder
Pick-Up Operation....................5-15
IV. CONTROLLING THE
REGISTRATION CLUTCH .................5-16
V. TWO-SIDED COPYING .....................5-18
A. Making Two-Sided Copies.............5-18
1. Outline......................................5-18
2. Operations................................5-19
B. Lower Feeding Assembly..............5-20
1. Outline......................................5-20
2. Set-Back Operation..................5-22
3. Sequence of Set-back
Operation..................................5-26
4. Re-Pick Up...............................5-27
5. Sequence of Re-Pick-up
Operation..................................5-29
C. Horizontal Registration..................5-30
1. Outline......................................5-30
2. Operation..................................5-31
3. Sequence of Operatiion ...........5-33
VI. DETECTING JAMS............................5-34
A. Outline...........................................5-34
VII. DISASSEMBLY AND ASSEMBLY......5-45
A. Pick-Up Assembly .........................5-46
1. Construction .............................5-46
2. Removing the Pick-Up
Assembly..................................5-47
3. Removing the Pick-Up Roller...5-48
4. Points to Note When Installing
the Pick-Up Roller ....................5-49
5. Removing the Feeding Roller...5-49
6. Removing the Separation
Roller........................................5-51
A. Outline...........................................4-21
B. Detecting the Level of Toner and
Controlling the Supply...................4-23
C. Stopping the Hopper Motor in
Response to a Rotation Error........4-24
III. DISASSEMBLY AND ASSEMBLY......4-25
A. Scanning Lamp Assembly.............4-25
1. Removing the Scanning Lamp ...4-25
2. Orientation of the Scanning
Lamp ........................................4-26
3. Removing the Thermal Fuse....4-27
B. Blank Exposure Lamp Assembly ..4-28
1. Removing the Blank Exposure
Lamp Assembly........................4-28
2. Removing the Blank Exposure
Lamp ........................................4-30
3. Removing the Blank Shutter
Solenoid ...................................4-31
4. Adjusting the Position of the
Blank Shutter Solenoid.............4-32
5. Removing the Blank Shutter
Motor ........................................4-33
6. Routing the Blank Shutter
Cable........................................4-33
C. Drum Unit ......................................4-34
1. Removing the Drum Unit..........4-34
2. Cleaning ...................................4-35
D. Charging Assembly .......................4-36
1. Removing the Primary
Charging Assembly..................4-36
2. Removing the Transfer
Charging Assembly..................4-37
3. Stringing the Primary/
Transfer Charging Wire............4-37
4. Stringing the Guide Wire..........4-41
5. Adjusting the Height of the
Charging Wire ..........................4-41
E. Developing System .......................4-42
1. Removing the Developing
Assembly..................................4-42
2. Removing the Blade.................4-43
3. Removing the Magnetic Seal
(developing cylinder)...............4-44
4. Installing the Magnetic Seal
and the Blade...........................4-47
5. Installing the Electrode
Positioning Plate.......................4-48

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
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CHAPTER 6 FIXING SYSTEM
I. OPERATION.......................................6-1
A. Outline...........................................6-1
II. CONTROLLING THE FIXING
TEMPERATURE.................................6-2
A. Controlling the Area of Heating
(fixing roller)...................................6-2
B. Controlling the Activation and the
Temperature of the Fixing Roller
(continuous copying) .....................6-3
1. Outline......................................6-3
2. Controlling Period
of Activation..............................6-3
3. Controlling the Control
Temperature .............................6-4
4. Controlling the temperature
during Pre-heat mode ..............6-4
C. Protection Mechanism...................6-5
D. Driving the Cleaning Belt...............6-7
III. DELIVERY ASSEMBLY......................6-8
A. Outline...........................................6-8
B. Controlling the Delivery Motor.......6-9
1. Outline......................................6-9
2. Operation..................................6-10
IV. DISASSEMBLY AND ASSEMBLY......6-11
A. Fixing Assembly ............................6-11
1. Construction .............................6-11
2. Removing the Fixing
Assembly..................................6-12
3. Removing the Fixing Cleaning
Belt ...........................................6-15
4. Installing the Fixing Cleaning
Belt ...........................................6-16
5. Replacing the oil sheet.............6-17
6. Removing the Fixing Heater.....6-18
7. Removing the Fixing Roller......6-21
8. Installing the Upper Fixing
Roller and the Heater...............6-25
9. Adjusting the Nip (tightening
the pressure adjusting nut).......6-27
10.Installing the Thermistor...........6-28
11.Installing the Thermal Switch...6-28
12.Position of the Paper Guide.....6-29
13.Positioning the Cleaning Belt
Solenoid ...................................6-29
B. Delivery Assembly.........................6-30
1. Removing the Delivery
Assembly..................................6-30
2. Removing the Upper
Separation Claws.....................6-32
3. Removing the Lower
Separation Claws.....................6-33
4. Removing the Delivery Motor...6-34
7. Adjusting the Pressure of the
Separation Roller......................5-53
8. Positioning the Pick-Up Assembly
Pick-Up Roller Releasing
Solenoid (SL1, SL2).................5-53
9. Releasing the Lifter ..................5-54
10.Adjusting the Registration
(left/right) ..................................5-55
B. Multifeeder Assembly....................5-56
1. Removing the Multifeeder
Assembly..................................5-56
2. Removing the Multifeeder Pick-
Up Roller/Separation Pad ........5-56
3. Adjusting the Pressure on the
Separation Pad.........................5-58
4. Adjusting the Left/Right
Registration ..............................5-58
5. Adjusting the Paper Guide Plate
Cam (multifeeder assembly) ....5-59
6. Routing the Timing Belt
(multifeeder assembly).............5-59
C. Registration Roller Assembly........5-60
1. Removing the Registration
Roller........................................5-60
D. Feeding Assembly.........................5-62
1. Removing the Feeding
Assembly..................................5-62
2. Removing the Feeding Belt......5-63
3. Removing the Feeding Fan......5-67
E. Lower Feeding Assembly..............5-68
1. Removing the Lower Feeding
Assembly..................................5-68
2. Attaching the Lower Feeding
Assembly..................................5-70
3. Removing the Set-Back Roller ..5-71
4. Removing the Lower Feeder
Outlet Roller .............................5-72
5. Removing the Lower Feeder
Inlet Roller................................5-73

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
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I. BASIC OPERATION...........................8-1
A. Outline of Electrical Circuit............8-1
II. INPUTS TO AND OUTPUTS FROM
PEDESTAL CONTROLLER ...............8-2
A. Outline...........................................8-2
B. Inputs to and Outputs from
Pedestal Controller........................8-3
1. Inputs and outputs (1/2)...........8-3
2. Inputs and outputs (2/2)...........8-4
III. PEDESTAL MOTOR CONTROL
CIRCUIT.............................................8-5
A. Outline...........................................8-5
B. Mechanism....................................8-5
IV. PAPER DECK UNIT...........................8-6
A. Basic Construction ........................8-6
B. Pick-Up/Feeding Operation...........8-7
1. Mechanism...............................8-7
2. Sequence of Pick-Up
Operations................................8-8
C. Lifter Operation..............................8-9
1. Operation..................................8-9
2. Lifting Operation.......................8-10
D. Detecting Paper in the Deck .........8-11
1. Identifying the Size of Paper....8-11
2. Identifying the Presence/
Absence of Paper.....................8-12
V. DETECTING JAMS ............................8-13
1. Outline......................................8-13
VI. DISASSEMBLY AND ASSEMBLY......8-15
A. Externals........................................8-16
1. Paper Deck Pedestal-M1 .........8-16
2. Detaching the Copier from the
Pedestal ...................................8-17
B. Pedestal Motor Drive Assembly....8-19
1. Removing the pedestal motor
drive assembly .........................8-19
C. Paper Deck....................................8-20
1. Removing the Paper Deck.......8-20
2. Removing the Lifter Wire..........8-21
3. Setting the Deck Size...............8-25
4. Adjusting the Deck Registration ..8-27
D. Pick-Up System.............................8-28
1. Cross Section of Pick-Up
Assembly..................................8-28
2. Removing the Pick-Up
Assembly..................................8-29
CHAPTER 8 PAPER DECK PEDESTAL
CHAPTER 7 CONTROLS AND EXTERNALS
I. FANS ..................................................7-1
II. POWER SUPPLY...............................7-3
A. Outline of Power Supply................7-3
B. Protection Mechanisms of the
Power Supply Circuit.....................7-5
III. ERROR DETECTION CIRCUIT.........7-6
A. Outline...........................................7-6
B. Scanning Lamp Error Activation
Detection Circuit............................7-7
C. Fixing Heater Error Activation
Detection Circuit............................7-7
1. Detection by an SSR................7-7
2. Detection by a Thermistor........7-7
IV. DISASSEMBLY AND ASSEMBLY......7-8
A. Externals........................................7-9
1. Remove the left inside cover....7-11
2. Remove the right inside cover ...7-12
B. Control Panel.................................7-14
1. Removing the Control Panel....7-14
C. Copyboard Cover ..........................7-15
1. Replacing the Copyboard
Cover Sheet .............................7-15
D. Fans...............................................7-15
1. Removing the Scanner
Cooling Fan..............................7-15
2. Removing the Exhaust Fan......7-15
3. Removing the Feeding Fan .....7-17
E. Main Motor Assembly....................7-17
1. Removing the Main Motor
Assembly..................................7-17
F. Mirror Guide Assembly..................7-18
1. Removing the Mirror Guide
Plate .........................................7-18
G. Main Drive Assembly.....................7-19
1. Removing the Main Drive
Assembly..................................7-19
2. Attaching the Drive Belt............7-22
H. Cleaning Belt Drive Assembly.......7-23
1. Removing the Cleaning Belt
Drive Assembly ........................7-23
I. DC Controller PCB........................7-24
1. Removing the DC Controller
PCB..........................................7-24
2. Points to Note When Handling
the DC Controller PCB.............7-24
J DC Power Supply PCB .................7-25
1. Removing the DC Power
Supply PCB..............................7-25

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
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CHAPTER 9 INSTALLATION
I. SELECTING THE SITE......................9-1
II. UNPACKING AND INSTALLATION....9-2
A. Unpacking and Removing
the Metal Fixings...........................9-2
B. Supplying Toner.............................9-6
C. Stirring the Toner...........................9-8
D. Installing the Drum Unit.................9-10
E. Checking Images and
Operations.....................................9-11
III. RELOCATING THE COPIER .............9-13
CHAPTER 10 MAINTENANCE AND INSPECTION
I. PERIODICALLY REPLACED
PARTS................................................10-1
A. Periodically Replaced Parts ..........10-1
II. CONSUMABLES AND DURABLES...10-2
A. Copier............................................10-2
B. Paper Deck Pedestal.....................10-3
III. SCHEDULED SERVICING.................10-4
IV. PERIODICALLY SERVICED PARTS..10-6
A. Copier............................................10-6
3. Removing the Pick-Up Roller...8-30
4. Removing the Feeding Roller...8-31
5. Removing the Separation
Roller........................................8-33
6. Adjusting the Pressure of the
Separation Roller......................8-34
7. Position of the Pick-Up Roller
Release Solenoid (SL1) ...........8-34
CHAPTER 11 TROUBLESHOOTING
I. MAINTENANCE AND
INSPECTION......................................11-3
A. Image Adjustment Basic
Procedure......................................11-3
B. Points to Note for Scheduled
Servicing........................................11-5
II. STAMDARDS AND
ADJUSTMENTS.................................11-7
A. Adjusting the Images.....................11-7
1. Adjusting the Image Leading
Edge Margin [3] No. 305..........11-7
2. Adjusting the Leading Edge
Non-Image Width [3] No. 306 ..11-8
3. Adjusting the Trailing Edge Non-
Image Width [3] No. 307 ..........11-9
4. Adjusting the Left-Right
Registration ..............................11-10
5. Adjusting the Image Left-Right
Margin [3] No. 308....................11-12
6. AE Adjustments........................11-14
7. Adjusting the Developing Bias
DC Component [3] No. 302......11-18
8. Adjusting the Horizontal
Registration Paper Edge
Sensor Position [3] No. 324 .....11-19
9. Adjusting the Trailing Edge
Margin for Pick-Up from the
Multifeeder [3] No. 327.............11-20
10.Adjusting the Book Erasing
Width [3] No. 326 .....................11-21
B. Exposure System ..........................11-22
1. Routing the Scanner Drive
Cable........................................11-22
2. Adjusting the Position of the
Mirror (optical path length
between No. 1 mirror and
No. 2/No. 3 mirror) ...................11-23
3. Adjusting the Tension of the
Scanner Cable..........................11-25
4. Adjusting the Tension of the
Lens Drive Belt.........................11-26
5. Cleaning the No.4 Mirror..........11-26
6. Cleaning the No.5/No.6 Mirror ...11-27
C. Image Formation System..............11-29
1. Orientation of the Scanning
Lamp ........................................11-29
2. Position of the Blank Shutter
Solenoid ...................................11-29

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
xi
3. Routing the Blank Shutter
Cable........................................11-30
4. Routing the Charging Wire.......11-31
5. Stringing the Guide Wire..........11-32
6. Adjusting the Height of the
Charging Wire ..........................11-32
7. Position of the Developing
Assembly Magnetic Seal..........11-33
8. After Replacing the Drum unit..11-33
D. Pick-Up / Feeding System.............11-34
1. Orientation of the Pick-Up
Roller........................................11-34
2. Orientation of the Separation
Roller........................................11-34
3. Orientation of the Feeding
Roller........................................11-35
4. Adjusting the Pressure of the
Separation Roller......................11-35
5. Position of the Pick-Up Roller
Solenoid (pick-up assembly;
SL1, SL2) .................................11-36
6. Orientation of the Multifeeder
Pick-Up Roller ..........................11-36
7. Position of the Pick-Up Guide
Plate Cam (multifeeder
assembly).................................11-37
8. Routing the Timing Belt
(multifeeder assembly).............11-37
9. Adjusting the Pressure of the
Separation Pad (multifeeder
assembly).................................11-38
10.Routing the Drive Belt..............11-38
11.Adjusting the Position of the
Horizontal Registration
Solenoid ...................................11-39
E. Fixing System................................11-40
1. Points to Note When Installing
the Fixing Heater......................11-40
2. Adjusting the Nip (tightening
the pressure adjusting nut).......11-41
3. Position of the Fixing Assembly
Paper Guide.............................11-42
4. Position of the Cleaning Belt
Solenoid ...................................11-42
F. Electrical System...........................11-43
1. Registering the Cassette/
Multifeeder Paper Width Basic
Setting [4].................................11-43
2. Adjusting the Original Stop
Position with the DF in Use
([3] No.325) ..............................11-46
3. Checking the Photointerrupters11-47
III. TROUBLESHOOTING IMAGE
FAULTS ..............................................11-53
A. Making Initial Checks ....................11-53
1. Installation Environment...........11-53
2. Checking the Originals.............11-53
3. Copyboard Cover, Copyboard
Glass, and Standard White
Plate ..........................................11-53
4. Charging Assemblies ...............11-53
5. Developing Assembly...............11-53
6. Paper........................................11-53
7. Periodically Replaced Parts .....11-54
8. Others.......................................11-54
B. Image Fault Samples ......11-56
Not available in electronic format
C. Troubleshooting Faulty Images.....11-57
1. The copy is too light.
(halftone only)...........................11-57
2. The copy is too light.
(solid black also) ......................11-58
3. The copy is too light. (entire
copy, considerably)...................11-58
4. The copy has uneven density.
(darker at front) ........................11-59
5. The copy has uneven density.
(lighter at front).........................11-59
6. The copy is foggy.
(entire copy) .............................11-60
7. The copy has vertical fogging ....11-61
8. The copy has black lines.
(vertical, blurred, thick).............11-61
9. The copy has black lines.
(vertical, thin)............................11-62
10.The copy has white spots.
(vertical)....................................11-63
11.The copy has white lines.
(vertical)...................................11-63
12.The copy has white spots.
(horizontal) ...............................11-64
13. The back of the copy is soiled ...11-65
14.The copy has faulty fixing ........11-66
15.The copy has a
displaced leading edge ............11-67
16.The copy has a
displaced leading edge ............11-67
17.The copy has a
displaced leading edge ............11-67
18.The copy has a blurred image. 11-68
19.The copy has horizontal
fogging......................................11-69
20.The copy has poor sharpness..11-70
21.The copy is blank.....................11-71
22.The copy is solid black.............11-72
IV. TROUBLESHOOTING
MALFUNCTIONS ...............................11-73
A. Troubleshooting Malfunctions........11-73
1. E000.........................................11-73
2. E001.........................................11-74
3. E002, 003.................................11-75
4. E004.........................................11-76
5. E005.........................................11-76
6. E010.........................................11-77
7. E030.........................................11-77
8. E031.........................................11-78

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
xii
9. E051.........................................11-78
10.E053.........................................11-79
11.E060.........................................11-80
12.E202.........................................11-81
13.E203.........................................11-81
14.E204.........................................11-82
15.E210.........................................11-82
16.E220.........................................11-82
17.E224.........................................11-83
18.E240.........................................11-83
19.E710, E711...............................11-83
20.E712.........................................11-84
21.E716.........................................11-84
22.E800.........................................11-85
23.AC power is absent..................11-86
24.DC power is absent..................11-87
25. The blank shutter fails to move ..11-89
26.The photosensitive drum fails
to rotate....................................11-89
27.Pick-up fails. (cassette)............11-90
28.The lifter fails to move up.
(cassette)..................................11-91
29.Pick-up fails. (multifeeder)........11-92
30.The scanner fails to move
forward/in reverse.....................11-93
31.The registration roller fails to
rotate ........................................11-94
32.The scanning lamp fails to
turn on......................................11-95
33.The pre-exposure lamp fails
to turn on..................................11-96
34.The hopper motor fails to
rotate ........................................11-96
35.The lens fails to move..............11-97
36.The fixing heater fails to
operate. ....................................11-98
37.The total copy counter fails
to operate.................................11-99
38.The option counter fails to
operate .....................................11-99
39.The Add Paper indicator fails
to turn off................................11-100
40.The Jam indicator fails to
turn off....................................11-100
41.The Add Toner indicator fails
to turn off................................11-101
B. Troubleshooting Malfunctions in
the Pedestal ................................11-102
1. E901.......................................11-102
2. Pick-up fails. (pedestal)..........11-107
3. The lifter fails to move up.
(pedestal) ...............................11-105
4. The Add Paper indicator fails
to turn off. (pedestal)..............11-106
V. TROUBLESHOOTING FEEDING
FAULTS ............................................11-107
A. Copy Paper Jams ........................11-107
1. Pick-up assembly...................11-108
2. Separation/feeding assembly ..11-109
3. Fixing/delivery assembly........11-110
4. Cleaning assembly.................11-110
5. Lower feeding assembly ........11-111
B. Troubleshooting Feeding Faults ..11-112
1. Double feeding.......................11-112
2. Wrinkling.................................11-112
VI. ARRANGEMENT AND
FUNCTIONS OF THE
ELECTRICAL PARTS.......................11-113
A. Sensors........................................11-114
B. Switches, clutches, and
solenoids......................................11-116
C. Heaters, lamps, and motors.........11-118
D. PCBs............................................11-120
E. Paper deck pedestal-M1..............11-122
F. Variable Resistors, Light-
Emitting Diodes, and Check
pins by PCB.................................11-124
1. DC Controls PCB...................11-125
2. HVT........................................11-126
3. Lamp Regulator PCB.............11-126
4. Motor driver 1 PCB ................11-127
5. Motor driver 2 PCB ................11-127
6. Pedestal controller PCB
(Paper deck pedestal)............11-128
VII. SERVICE MODE..............................11-129
A. Outline..........................................11-129
B. Using Service Mode.....................11-130
1. Starting Service Mode............11-130
C. Using Adjustment Mode and
Optional Setting mode .................11-131
D. Control/Display Mode [1] .............11-132
E. I/0 Display Mode [2].....................11-147
F. Adjustment Mode [3]....................11-171
G.Function Mode [4]........................11-173
H. Optional Settings Mode [5] ..........11-175
I. Counter Mode [6].........................11-177
VIII. SELF DIAGNOSIS............................11-179
A. Copier ..........................................11-179
B. Pedestal Self Diagnosis...............11-183
C. RDF/ADF Self Diagnosis .............11-184
D. Sorter Self Diagnosis...................11-185

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
xiii
APPENDIX
A. GENERAL TIMING CHART..........A-1
B. SIGNALS AND ABBREVIATIONS A-2
C. GENERAL CIRCUIT DIAGRAM....A-5
Not available
D. PEDESTAL CONTROLLER ..........A-9
Not available
E. SPECIAL TOOLS LIST .................A-11
F. SOLVENTS AND OILS..................A-12

COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 1
GENERAL DESCRIPTION
I. FEATURES.........................................1-1
II. SPECIFICATIONS..............................1-2
A. Copier............................................1-2
B. Paper Deck Pedestal-M1 ..............1-8
III. NAMES OF PARTS............................1-9
A. Exterior View .................................1-9
B. Cross Section................................1-11
IV. OPERATION.......................................1-13
A. Control Panel (AB/Inch).................1-13
B. Control Panel (Inch) ......................1-14
C. User Mode.....................................1-17
V. ROUTINE MAINTENANCE
BY THE USER ...................................1-20
VI. IMAGE FORMATION..........................1-21
A. Outline...........................................1-21
B. Static Latent Image Formation
Block..............................................1-23
C. Pre-Exposure (step 1)...................1-23
D. Primary Charging (step 2).............1-24
E. Image Exposure (step 3)...............1-24
F. Development (step 4)....................1-25
G. Transfer (step 5)............................1-26
H. Separation (step 6)........................1-27
I. Fixing (step 7)................................1-28
J. Drum Cleaning (step 8).................1-28
VII. AUXILIARY PROCESS......................1-29
A. Blank Exposure .............................1-29
This chapter describes the outline of the features, how to operate and copying process
of this copier.

I. FEATURES
1. Front-loading.
• Paper is supplied from the front so that it requires less floor space.
• Although designed as a compact machine, its source of paper may hold as many as
2550 sheets (with the addition of a paper deck pedestal (accessory)).
2. High-quality toner for high-quality images.
• Its high-quality one-component toner ensures enhanced reproduction of text and
photos.
• Canon’s own developing technology (toner projection) ensures stable production of
high-quality images.
3. Full line of basic features.
• It turns out as many as 31 copies (A4) / 30 copies (LTR) per minute.
• It zooms between 49% and 204%, with nine (AB) / eight (Inch) preset reduction and
enlargement reproduction ratios.
• It accommodates various paper sizes (A3/11”
×17” to postcard) and transfer media
(tracing paper, transparency).
• It automatically recognizes the size of originals, selecting the best copy paper size
(auto paper selection) or reproduction ratio (auto ratio selection).
• It is capable of page separation, image composition, auto duplexing, frame erasing,
and margin creation.
• It possesses a compact duplexing unit designed with a set-back mechanism.
CHAPTER 1 GENERAL DESCRIPTION
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
1-1

II. SPECIFICATIONS
A. Copier
1. Type
2. System
1-2
CHAPTER 1 GENERAL DESCRIPTION
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Body Desk-top
Copyboard Fixed
Light source Halogen lamp (300 W, 120 V; 340 W, 220/240 V)
Lens Zoom lens
Photosensitive OPC (φ30)
medium
Reproduction Indirect electrostatic
Charging Corona
Exposure Slit (moving scanner)
Copy density Automatic (AE) or manual
adjustment
Development Dry (toner projection)
Pick-up Auto 2 cassettes
Pedestal (accessory)
Manual Multifeeder
Transfer Corona
Separation Curvature + static eliminator
Cleaning Blade
Fixing Heat roller
(main 700 W + sub 600 W for 120V model;
main 750 W + sub 640 W for 220/240V model)

3. Performance
CHAPTER 1 GENERAL DESCRIPTION
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
1-3
Item
Type of original
Maximum size of original
Reproduction ratio
Wait time
First copy
Continuous copying
Copying speed
Copy size
Cassette
Manual
Two-sided
copying
Pick-up
capacity
Copy tray
Non-image width
Auto clear
Auto power-off
Accessories
Type of copy paper
Auto
Manual
Specifications
Sheet, book, 3-D object (2 kg / 4.4lb max.)
A3 (297 x 420 mm)/LDG (11” x 17”*1)
Direct, 4R4E or 4R3E (Table 1-201), zoom 48~205%(Display
range: 49 to 204%)
35 sec or less (at 20°C / 68F room temperature)
5.75 sec or less (A4, Direct, non-AE, pick-up from cassette 1)
100 copies max.
See Tables 1-202 and 1-203.
Cassette: A3 (11” x 17”*1) to A5 (STMT*1)
Manual: A3 (11” x 17”*1) to A6 (postcard)
Plain paper (64 to 80 g/m2), tracing paper (SM1),
colored paper*2, recycled paper (64 to 80 g/m2)
Plain paper (64 to 80 g/m2;128 g/m2*3), tracing paper (SM1,
GNT80), colored paper*2, transparency*2*4, postcard*2,
label sheet*2, recycled paper (64 to 80 g/m2)
Plain paper (64 to 80 g/m2), colored paper*2, recycled paper
(64 to 80 g/m2)
Plain paper (64 to 80 g/m2; 128 g/m2*3), colored paper*2,
recycled paper (64 to 80 g/m2)
500 sheets (55mm / 2.2”,80g/m2plain paper), front loading (no
claw)
50 sheets (5.5mm / 0.22”,80g/m2plain paper)
100 sheets (A3 / 11” ×17”, plain paper)
2.0 ± 1.0 mm / 0.08” ± 0.04” (leading edge),
2.5 ± 1.5 mm / 0.1” ± 0.06” (left/right, trailing edge)
Provided (2 min standard, may be varied between 0 and 9
min in 1-min increments)
Provided (60 min standard, may be varied between 10 and 120
min in 10-min increments; may be disabled in service mode)
ADF-E1
RDF-F1
Paper Deck Pedestal-M1
MS-B1
Sorter-E1
Stapler Sorter-D2
*111”x17”=279.4x431.8mm, STMT=139.7x215.9mm
*2Canon-recommended paper.
*3Be sure to remove curling.
*4Be sure to separate sheets before setting on the multifeeder tray.
Cassette
Manual

Item
Temperature
Humidity
Atmospheric
pressure
120V 60Hz
120V 60Hz
(Taiwan)
220/240V
50Hz
220/240V
50Hz
(Australia)
Maximum
Standby
Continuous
copying
Copying
Standby
Ozone (avr of 8 hr)
Width
Depth
Height
Weight
Copy paper
Toner
1-4
CHAPTER 1 GENERAL DESCRIPTION
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Specifications
7.5°C / 45.5F to 32.5°C / 90.5F
5% to 85% RH
608 hPa to 1013 hPa (0.5 to 1 atm)
Serial numbers
NHE XXXXX
NHF XXXXX
PDE XXXXX
RBN XXXXX
1.5 kW or less
0.164 kWh (average; reference only)
0.834 kWh (average; reference only)
71 dB or less
50 dB or less
0.05 ppm or less (avr; 0.10 ppm or less max.)
610mm / 24.0”
595mm / 23.4”
585mm / 23.0”
82.5 kg / 181.5 lb
Keep wrapped, and protect against humidity.
Avoid direct sunshine, and store at 40°C / 104F, 85% or less.
Operating
environ-
ment
Power
supply
Power
consump-
tion
Noise
Dimen-
sions
Consum-
ables

CHAPTER 1 GENERAL DESCRIPTION
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
1-5
AB Inch
Direct 1:1 1:1
Reduce I 1:0.500 1:0.500
Reduce II 1:0.707 1:0.647
Reduce III 1:0.816 1:0.733
Reduce IV 1:0.865 1:0.786
Enlarge I 1:1.154 1:1.214
Enlarge II 1:1.224 1:1.294
Enlarge III 1:1.414 1:2.000
Enlarge IV 1:2.000
Zoom 49 ~ 204% in 1% increments
Copying
ratio
Table 1-201 Preset Ratios