Canon LBP3200 - LBP 3200 B/W Laser Printer, LBP3200 Series Service Manual
Sep 30 2003
Service Manual
LBP3200 Series
LBP3200
Application
This manual has been issued by Canon Inc. for qualified persons to learn technical theory, installation, maintenance, and
repair of products. This manual covers all localities where the products are sold. For this reason, there may be
information in this manual that does not apply to your locality.
Corrections
This manual may contain technical inaccuracies or typographical errors due to improvements or changes in products.
When changes occur in applicable products or in the contents of this manual, Canon will release technical information
as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon will
issue a new edition of this manual.
The following paragraph does not apply to any countries where such provisions are inconsistent with local law.
Trademarks
The product names and company names used in this manual are the registered trademarks of the individual companies.
Copyright
This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not be copied,
reproduced or translated into another language, in whole or in part, without the written consent of Canon Inc.
COPYRIGHT © 2001 CANON INC.
Printed in Japan
Caution
Use of this manual should be strictly supervised to avoid disclosure of confidential information.
Introduction
Symbols Used
This documentation uses the following symbols to indicate special information:
Symbol Description
Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning.
Indicates an item requiring care to avoid electric shocks.
Indicates an item requiring care to avoid combustion (fire).
Indicates an item prohibiting disassembly to avoid electric shocks or problems.
Indicates an item requiring disconnection of the power plug from the electric outlet.
Indicates an item intended to provide notes assisting the understanding of the topic in question.
Indicates an item of reference assisting the understanding of the topic in question.
Provides a description of a service mode.
Provides a description of the nature of an error indication.
Memo
REF.
Introduction
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 unit door, which results in supplying the machine 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 addition, the asterisk (*) as in
"DRMD*" indicates that the DRMD signal goes on when '0'.
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 machines 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
purposes, 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 machine."
Contents
Contents
Chapter 1 PRODUCT DESCRIPTION
1.1 PRODUCT SPECIFICATIONS....................................................................................................................... 1- 1
1.1.1Product Specifications................................................................................................................................. 1- 1
1.2 Detailed Specifications...................................................................................................................................... 1- 3
1.2.1Printing Speed ............................................................................................................................................. 1- 3
1.2.2Stack Upon Delivery ................................................................................................................................... 1- 3
1.3 NAMES OF PARTS ......................................................................................................................................... 1- 5
1.3.1External View.............................................................................................................................................. 1- 5
1.4 SAFETY............................................................................................................................................................ 1- 7
1.4.1Safety of Laser Light................................................................................................................................... 1- 7
1.4.2Regulations Under the Center for Devices and Radiological Health (CDRH) ........................................... 1- 7
1.4.3Handling the Laser Unit .............................................................................................................................. 1- 7
1.4.4Safety of Toner............................................................................................................................................ 1- 8
Chapter 2 TECHNICAL REFERENCE
2.1 LASER EXPOSURE SYSTEM........................................................................................................................ 2- 1
2.1.1 Overview/Configuration ............................................................................................................................. 2- 1
2.2 IMAGE FORMATION SYSTEM ....................................................................................................................2- 3
2.2.1 Overview/Configuration ............................................................................................................................. 2- 3
2.3 PICKUP AND FEEDING SYSTEM ................................................................................................................2- 5
2.3.1 Overview/Configuration ............................................................................................................................. 2- 5
2.3.2 Detecting Jams ............................................................................................................................................ 2- 6
2.4 FIXING SYSTEM............................................................................................................................................. 2- 9
2.4.1 Overview/Configuration ............................................................................................................................. 2- 9
2.4.2 Various Control Mechanisms ................................................................................................................... 2- 10
Chapter 3 DISASSEMBLY AND ASSEMBLY
3.1 EXTERNAL AND CONTROLS SYSTEM ..................................................................................................... 3- 1
3.1.1 Rear Cover .................................................................................................................................................. 3- 1
3.1.2 Right Cover................................................................................................................................................. 3- 1
3.1.3 Left Cover ................................................................................................................................................... 3- 2
3.1.4 Top Cover ................................................................................................................................................... 3- 3
3.1.5 Front Cover ................................................................................................................................................. 3- 4
3.1.6 Engine controller board............................................................................................................................... 3- 4
3.1.7 Power supply board..................................................................................................................................... 3- 5
3.1.8 High-voltage board ..................................................................................................................................... 3- 7
3.1.9 CAPT board .............................................................................................................................................. 3- 10
3.1.10 Top sensor............................................................................................................................................... 3- 11
3.1.11 Delivery sensor ....................................................................................................................................... 3- 13
3.2 IMAGE FORMATION SYSTEM .................................................................................................................. 3- 16
3.2.1 Transfer Charging Roller .......................................................................................................................... 3- 16
Contents
3.3 LASER EXPOSURE SYSTEM ......................................................................................................................3- 17
3.3.1 Laser Scanner Unit ....................................................................................................................................3- 17
3.4 PICKUP AND FEEDING SYSTEM...............................................................................................................3- 19
3.4.1 Cassette Pickup Roller ..............................................................................................................................3- 19
3.4.2 Cassette Separation Pad ............................................................................................................................3- 21
3.4.3 Cassette Pickup solenoid...........................................................................................................................3- 22
3.4.4 Gear Unit ...................................................................................................................................................3- 24
3.4.5 Main Motor ...............................................................................................................................................3- 26
3.4.6 Multi-purpose Pickup Roller.....................................................................................................................3- 29
3.4.7 Multi-purpose Pickup Solenoid.................................................................................................................3- 32
3.5 FIXING SYSTEM ...........................................................................................................................................3- 36
3.5.1 Fixing Pressure Roller ...............................................................................................................................3- 36
3.5.2 Fixing Film Unit........................................................................................................................................3- 38
Chapter 4 MAINTENANCE AND INSPECTION
4.1 Periodically Replaced Parts ...............................................................................................................................4- 1
4.1.1Parts Requiring Periodical Replacement .....................................................................................................4- 1
4.2 Consumables......................................................................................................................................................4- 2
4.2.1Consumable .................................................................................................................................................4- 2
4.3 Periodical Service ..............................................................................................................................................4- 3
4.3.1Items Requiring Scheduled Servicing .........................................................................................................4- 3
4.4 Cleaning.............................................................................................................................................................4- 4
4.4.1Items Requiring Cleaning............................................................................................................................4- 4
4.4.2Cleaning Method (external covers) .............................................................................................................4- 5
4.4.3Cleaning Method (printer unit)....................................................................................................................4- 5
4.5 Lubrications .......................................................................................................................................................4- 7
4.5.1Areas Requiring Application of Grease.......................................................................................................4- 7
4.5.2Delivery Idler Gear ......................................................................................................................................4- 7
4.5.3Fixing Drive Transmission Gear .................................................................................................................4- 8
4.5.4Large Gear Bushing R .................................................................................................................................4- 8
4.5.5Large Gear ...................................................................................................................................................4- 9
4.5.6Feed Gear.....................................................................................................................................................4- 9
4.5.7Internal Gear ..............................................................................................................................................4- 10
4.5.8Large Gear Deceleration Gear/Plate R ......................................................................................................4- 10
4.5.9Main Motor................................................................................................................................................4- 11
4.5.10Drive Releasing Arm ...............................................................................................................................4- 12
4.5.11FU Delivery Roller ..................................................................................................................................4- 12
4.5.12Pickup Idler Gear.....................................................................................................................................4- 13
4.5.13Feed Deceleration Gear ...........................................................................................................................4- 13
4.5.14Fixing Deceleration Gear.........................................................................................................................4- 14
4.5.15FD Delivery Roller ..................................................................................................................................4- 15
4.5.16Large Gear Bushing F..............................................................................................................................4- 15
4.5.17Pressure roller ..........................................................................................................................................4- 16
Chapter 5 TROUBLESHOOTING
5.1 PHENOMENON TABLE .................................................................................................................................5- 1
5.1.1Symptoms ....................................................................................................................................................5- 1
Contents
5.2 Countermeasures ............................................................................................................................................... 5- 2
5.2.1 Image Faults................................................................................................................................................5- 2
5.2.2 Malfunction................................................................................................................................................. 5- 2
5.2.3 Jam (Main Unit).......................................................................................................................................... 5- 3
5.3 MEASUREMENT AND ADJUSTMENT........................................................................................................ 5- 4
5.3.1 Basic Adjustment ........................................................................................................................................ 5- 4
5.4 SERVICE TOOLS ............................................................................................................................................ 5- 5
5.4.1Special Tools ............................................................................................................................................... 5- 5
Chapter 6 APPENDIX
6.1 OUTLINE OF ELECTRICAL COMPONENTS.............................................................................................. 6- 1
6.1.1 Sensor.......................................................................................................................................................... 6- 1
6.1.2 PCBs ........................................................................................................................................................... 6- 2
Chapter 1 PRODUCT
DESCRIPTION
Contents
Contents
1.1 PRODUCT SPECIFICATIONS........................................................................................................................ 1-1
1.1.1 Product Specifications................................................................................................................................. 1-1
1.2 Detailed Specifications....................................................................................................................................... 1-3
1.2.1 Printing Speed ............................................................................................................................................. 1-3
1.2.2 Stack Upon Delivery ................................................................................................................................... 1-3
1.3 NAMES OF PARTS .......................................................................................................................................... 1-5
1.3.1 External View.............................................................................................................................................. 1-5
1.4 SAFETY............................................................................................................................................................. 1-7
1.4.1 Safety of Laser Light................................................................................................................................... 1-7
1.4.2 Regulations Under the Center for Devices and Radiological Health (CDRH) ........................................... 1-7
1.4.3 Handling the Laser Unit .............................................................................................................................. 1-7
1.4.4 Safety of Toner............................................................................................................................................ 1-8
Chapter 1
1-1
1.1 PRODUCT SPECIFICATIONS
1.1.1 Product Specifications
0002-6360
Body installation
method
Desk-top page printer
Photosensitive medium OPC drum
Exposure method Semi-conductor laser
Development method Toner projection
Transfer method Roller transfer
Separation method Curvature/bias on static eliminator
Cassette pickup method Pad separation
Multifeeder pickup
method
Single feed
Drum cleaning method Blade
Fixing method On-demand fixing
Delivery method face-down/face-up
Toner supply type EP-26 toner cartridge; good for about 2500 prints
Warm-up time 0 second (Less than 8 seconds when the printer ON)
Print area Within 5 mm of paper edge
Printing resolution 600 x 600 dpi
First print time face-down mode: 10 sec or less (at 20 deg C; A4); face-
up mode: 9 sec or less (at 20 deg C; A4) / The times
are after the printer has received data.
Cassette paper size A4, B5, A5, Letter, Legal*, Executive, Envelope C5,
Envelope COM10, Envelope DL, Envelope Monarch /
*If "LGL" is indicated in the cassette, you can load the
legal-size paper in the cassette.
Multi-purpose paper
size
A4, B5, A5, Legal, Letter, Executive, Envelope C5,
Envelope COM10, Envelope DL, Envelope Monarch,
Custom Paper(76.2 to 215.9 mm in width, 127.0 to
355.6 mm in length)
Cassette paper type Plain paper (64 to 90 g/m2), Heavy paper (91 to 128 g/
m2), Transparency, Label, Envelope
Chapter 1
1-2
Multi-purpose paper
type
Plain paper (64 to 90 g/m2), Heavy paper (91 to 163 g/
m2), Transparency, Label, Envelope
Cassette capacity Approx. 250 sheets (Plain paper, 64 to 80 g/m2);
Approx. 100 sheets (Heavy paper, 91 to 128 g/m2);
Approx. 100 sheets (Transparency); Approx. 100
sheets (Label); Approx. 20 sheets (Envelope)
Multi-purpose capacity 1 sheet (Plain paper, Heavy paper, Transparency,
Label, Envelope)
Duplex method Manual feed only (excluding transparency, envelope,
label)
Memory 2 MB (built-in); no optional memory
Operating environment
(Temperature range)
7.5 to 32.5 deg C (45.5 to 90.5 deg F)
Operating environment
(Humidity range)
5 to 90 % RH
Noise During standby: Background noise level, During print:
55 dB [A] or less
Power supply rating 120 V 50/60 Hz (+/-2 Hz), 220-240 V (+/-10 %) 50/60
Hz (+/-2 Hz)
Power consumption 120 V model: Average during operation; approx. 350
W, Average during standby; approx. 7 W / 220-240 V
model: Average during operation; approx. 360 W,
Average during standby; approx. 7 W
Dimensions 367 (W) x 376.3 (D) x 245 (H) mm
Weight 120 V model: Printer unit; approx.6.5 kg (Excluding
the toner cartridge), Cassette; approx.0.9 kg, Toner
cartridge; 0.7 kg / 220-240 V model: Printer unit;
approx.6.1 kg (Excluding the toner cartridge),
Cassette; approx.0.8 kg, Toner cartridge; 0.7 kg
Option None
Chapter 1
1-3
1.2 Detailed Specifications
1.2.1 Printing Speed
0002-6870
T-1-1
(unit: sheets/min)
*If "LGL" is indicated in the cassette, you can load the legal-size in the cassette.
1.2.2 Stack Upon Delivery
0002-6888
T-1-2
Fixing mode
Paper size P l a i n
paper
Plain
paper L
Heavy
paper
Heavy
paper H
Transpare
ncy
A4 (64 to 90 g/m2) 18 18 18 12 18
B5 (64 to 90 g/m2) 8 8 4 4 8
A5 (64 to 90 g/m2) 8 8 4 4 8
A4 (105 to 128 g/m2) - - 18 12 -
B5 (105 to 128 g/m2) - - 4 4 -
LTR (75 to 90 g/m2) 18 18 18 12 18
LGL (75 to 90 g/
m2)*
15----
LTR (Bond 75 to 90
g/m2)
- - 18 12 -
LTR (105 g/m2) - - 18 12 -
Envelope Monarch - - 4 - -
Envelope DL - - 4 - -
Envelope COM10 - - 4 - -
Envelope C5 - - 4 - -
Paper type Face-down Face-up
Plain paper (64 to 80 g/m2) Approx. 100 sheets 1 sheet
Heavy paper (91 to 128 g/
m2)
Approx. 30 sheets 1 sheet
Chapter 1
1-4
The values herein are estimates only and are subject to change for product improvement.
Transparency Approx. 5 sheets (for 120V model)
Approx. 10 sheets (for 230V
model)
1 sheet
Label Approx. 10 sheets 1 sheet
Envelope Approx. 10 sheets 1 sheet
Paper type Face-down Face-up
Chapter 1
1-5
1.3 NAMES OF PARTS
1.3.1 External View
0002-9016
<Front View>
F-1-1
T-1-3
<Rear View>
[1] Face-down delivery tray [5] Cassette
[2] Face-down delivery area [6] Manual feed slot
[3] Delivery selection cover [7] Paper guide
[4] Power switch [8] Front cover
A
5
A
4
L
T
R
LG
L
O
N
B
5
E
X
E
C
O
F
F
[1]
[8]
[7]
[6]
[2]
[3]
[4]
[5]
Chapter 1
1-6
F-1-2
T-1-4
[1] Power socket [4] Ventilation slot
[2] face-up delivery slot [5] USB connector
[3] Power indicator [6] Cassette protective cover
[1]
[2]
[3]
[4]
[5]
[6]
Chapter 1
1-7
1.4 SAFETY
1.4.1 Safety of Laser Light
0002-4309
Laser radiation could be hazardous to the human body. For this reason, laser radiation emitted inside this machine is
hermetically sealed within the protective housing and external cover. No radiation can leaak from the machine in the
normal operation of the product by the user.
1.4.2 Regulations Under the Center for Devices and Radiological Health
(CDRH)
0002-4310
The CDRH of the US Food and Drug Administration put into effect regulations governing the sale of laser products
in the US on August 2, 1976. These regulations apply to all laser products produced on and after August 1, 1976, and
a laser product cannot be sold unless it has been certified to comply with the regulations. The following is the label
used to indicate that the product has been certified under the regulations, and all laser products sold in the US must
bear the label.
F-1-3
1.4.3 Handling the Laser Unit
0002-4553
The laser scanner unit emits invisible laser light inside it. If exposed to laser light, the human eye can irreparably be
damaged. Never attempt to disassemble the laser scanner unit. (It is not designed for servicing in the field).
The covers around the laser scanner unit are identified by the following label [1].
CANON
30-2, SHIMOMARUKO, 3-CHOME, OHTAKU, TOKYO,
146, JAPAN.
MANUFACTURED:
THIS PRODUCT CONFORMS WITH CQRH RADIATION
PERFORMANCE STANDARD 21CFR CHAPTER 1
SUBCHAPTER J.
Chapter 1
1-8
F-1-4
1.4.4 Safety of Toner
0002-4556
The machine's toner is a non-toxic material composed of plastic, iron, and small amounts of dye.
Do not put the toner into fire. It may explode.
Toner on the Skin or Clothes
1. If your skin or clothes came into contact with toner, use dry tissue to remove the toner, and then wash with water.
2. Do not use warm or hot water, which will cause the toner to jell, permanently fusing it with the fibers of the clothes.
3. Do not bring toner into contact with vinyl material. They are likely to react with each other.
[1]
Chapter 2 TECHNICAL
REFERENCE
Contents
Contents
2.1 LASER EXPOSURE SYSTEM......................................................................................................................... 2-1
2.1.1 Overview/Configuration.............................................................................................................................. 2-1
2.1.1.1 Overview .............................................................................................................................................. 2-1
2.2 IMAGE FORMATION SYSTEM ..................................................................................................................... 2-3
2.2.1 Overview/Configuration.............................................................................................................................. 2-3
2.2.1.1 Overview .............................................................................................................................................. 2-3
2.3 PICKUP AND FEEDING SYSTEM ................................................................................................................. 2-5
2.3.1 Overview/Configuration.............................................................................................................................. 2-5
2.3.1.1 Overview .............................................................................................................................................. 2-5
2.3.2 Detecting Jams ............................................................................................................................................ 2-6
2.3.2.1 Jam Detection Outline .......................................................................................................................... 2-6
2.3.2.1.1 Type so Jams ................................................................................................................................. 2-6
2.3.2.2 Delay Jams............................................................................................................................................ 2-7
2.3.2.2.1 Pickup Delay Jam.......................................................................................................................... 2-7
2.3.2.2.2 Delivery Delay Jam ....................................................................................................................... 2-7
2.3.2.3 Stationary Jams..................................................................................................................................... 2-7
2.3.2.3.1 Pickup Stationary Jam ................................................................................................................... 2-7
2.3.2.3.2 Delivery Stationary Jam ................................................................................................................ 2-7
2.3.2.4 Other Jams............................................................................................................................................ 2-7
2.3.2.4.1 Wrap Jam....................................................................................................................................... 2-7
2.3.2.4.2 Initial Jam ...................................................................................................................................... 2-8
2.3.2.4.3 Cover Open Jam ............................................................................................................................ 2-8
2.4 FIXING SYSTEM.............................................................................................................................................. 2-9
2.4.1 Overview/Configuration.............................................................................................................................. 2-9
2.4.1.1 Overview .............................................................................................................................................. 2-9
2.4.2 Various Control Mechanisms.................................................................................................................... 2-10
2.4.2.1 Protective Functions ........................................................................................................................... 2-10
2.4.2.1.1 Protective Mechanisms................................................................................................................ 2-10
2.4.2.1.2 Detecting a Fault in the Fixing Assembly ................................................................................... 2-11
Chapter 2
2-1
2.1 LASER EXPOSURE SYSTEM
2.1.1 Overview/Configuration
2.1.1.1 Overview 0002-4749
F-2-1
T-2-1
The machine's laser scanner assembly consists of the laser driver and the scanner motor, which are driven by signals
coming from the engine controller.
The laser driver serves to turn on the laser diode according to the laser control signal and video signals from the
engine controller.
The laser beam moves thorough the collimator less and the cylindrical lens to reach the 4-facet mirror rotating at a
specific speed.
The leaser beam reflected by the 4-facet mirror moves through the imaging lens arranged in front of the 4-facet mirror
[1] Laser driver PCB [5] Imaging lends
[2] BD sensor [6] Scanner motor
[3] Reflecting mirror [7] 4-facet mirror
[4] Photosensitive drum [8] Cylindrical lens
[2]
[1]
[3]
[4]
[5]
[7]
[6]
[8]
Chapter 2
2-2
and the reflecting mirror to reach and focus on the photosensitive drum.
When the 4-facet mirror rotates at a specific speed, the laser beam scans the photosensitive drum in keeping with the
mirror rotation, thus drawing static images on the photosensitive drum.
Memo:
BD Fault
The machine identifies a BD fault if it does not detect the /BDI signal within 0.1 sec after the scanner motor is
forced to accelerate. It also detects a BD fault if it does not detect a specific interval of /BDI signals for 2 sec
continuously after the scanner motor has reached a specific revolution (number of rotations).
Scanner Fault
If the machine does not detect the /BDI signal 1.4 sc after it has stopped forcing the scanner motor to accelerate,
it extends the period of detection by 120 sec; if it still does not detect a specific interval of /BDI signals, it
identifies a scanner fault.
BD Error
The machine identifies a BD error if it does not detect the /BDI signal at a specific interval while the /BDI signal
is being generated. It, however, does not identify a BD error under the following condition:
-the door is identified as being open within 0.2 sec after detection of a BD error.
-a BD fault or a scanner fault is detected after a BD error has been identified.
The laser/scanner unit contains parts that cannot be adjusted in the field. Do not attempt to disassemble the laser/
scanner unit.
Chapter 2
2-3
2.2 IMAGE FORMATION SYSTEM
2.2.1 Overview/Configuration
2.2.1.1 Overview 0002-8228
F-2-2
T-2-2
In response to a print command, the engine controller turns on the main motor to drive the photosensitive drum,
developing cylinder, primary charging roller, and transfer charging roller.
Thereafter, the machine uses the primary charging roller to charge the surface of the photosensitive drum to an even,
negative potential and, at the same time, directs the laser beam across the surface of the photosensitive drum. (The
laser beam is modulated to according to the incoming video signals.)
The image thus formed on the photosensitive drum is a static, latent image; it is turned into a visible image by means
of the toner from the developing cylinder. The resulting toner image is then transferred to paper by the work of the
transfer charging roller, and the paper is sent to the fixing assembly. The surface of the photosensitive drum is
cleaned by the cleaning blade so that it is free of residual toner; after cleaning, the primary charging roller once again
charges the surface to an even, negative potential to prepare for the formation of a new static, latent image.
[1] Laser/scanner assembly [5] Photosensitive drum
[2] Laser beam [6] Transfer charging roller
[3] Blade [7] Primary charging roller
[4] Developing cylinder [8] Cleaning blade
[1]
[2]
[6]
[3]
[4]
[5]
[8]
[7]
Chapter 2
2-4
Drum Cover Shutter
If the surface of the photosensitive drum is exposed to strong light, it develops what is know as "photo memory,"
which can cause white spots or black lines in images. To protect the drum against light, the machine is equipped
with a drum cover shutter. The drum cover shutter must never be opened unless doing so proves to be absolutely
necessary.
Loading...