Canon iPF825 User manual

SERVICE
MANUAL
imagePROGRAF
iPF825
COPYRIGHT ©
2017 CANON INC. CANON imagePROGRAF iPF825 Rev.2 PRINTED IN U.S.A.
February 27, 2017
Rev. 2


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 refer-
ence 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, how-
ever, 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 com-
municated 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 Overview .......................................................................................................................................1- 1
1.1.1 Product Overview....................................................................................................................................................1- 1
1.2 Features .....................................................................................................................................................1- 3
1.2.1 Features ..................................................................................................................................................................1- 3
1.2.2 Printhead.................................................................................................................................................................1- 3
1.2.3 Ink Tank...................................................................................................................................................................1- 3
1.2.4 Cutter.......................................................................................................................................................................1- 4
1.2.5 Roll Holder...............................................................................................................................................................1- 4
1.2.6 Stand.......................................................................................................................................................................1- 5
1.2.7 Wheeled Output Stacker .........................................................................................................................................1- 5
1.2.8 Hard Disk Drive .......................................................................................................................................................1- 5
1.2.9 Consumables...........................................................................................................................................................1- 6
1.3 Product Specifications................................................................................................................................1- 7
1.3.1 Product Specifications.............................................................................................................................................1- 7
1.4 Detailed Specifications ...............................................................................................................................1- 9
1.4.1 Print Speed and Direction........................................................................................................................................1- 9
1.4.2 Interface Specifications .........................................................................................................................................1- 15
1.5 Names and Functions of Components .....................................................................................................1- 16
1.5.1 Front......................................................................................................................................................................1- 16
1.5.2 Rear.......................................................................................................................................................................1- 17
1.5.3 Top Cover (Inside).................................................................................................................................................1- 18
1.5.4 Carriage.................................................................................................................................................................1- 19
1.5.5 Ink Tank Cover (Inside).........................................................................................................................................1- 19
1.6 Basic Operation........................................................................................................................................1- 20
1.6.1 Operation Panel.....................................................................................................................................................1- 20
1.6.2 Main Menu.............................................................................................................................................................1- 21
1.7 Safety and Precautions ............................................................................................................................1- 43
1.7.1 Safety Precautions ................................................................................................................................................1- 43
1.7.1.1 Moving Parts.......................................................................................................................................................................... 1- 43
1.7.1.2 Adhesion of Ink ...................................................................................................................................................................... 1- 44
1.7.1.3 Electric Parts..........................................................................................................................................................................1- 46
1.7.2 Other Precautions..................................................................................................................................................1- 47
1.7.2.1 Printhead................................................................................................................................................................................1- 47
1.7.2.2 Ink Tank .................................................................................................................................................................................1- 48
1.7.2.3 Handling the Printer...............................................................................................................................................................1- 49
1.7.3 Precautions When Servicing Printer......................................................................................................................1- 51
1.7.3.1 Notes on the Data Stored in the Printer.................................................................................................................................1- 51
1.7.3.2 Confirming the Firmware Version ..........................................................................................................................................1- 51
1.7.3.3 Precautions against Static Electricity.....................................................................................................................................1- 51
1.7.3.4 Precautions for Disassembly/Reassembly.............................................................................................................................1- 51
1.7.3.5 Self-diagnostic Feature.......................................................................................................................................................... 1- 51
1.7.3.6 Disposing of the Lithium Battery ............................................................................................................................................ 1- 52
Chapter 2 TECHNICAL REFERENCE
2.1 Basic Operation Outline..............................................................................................................................2- 1
2.1.1 Printer Diagram .......................................................................................................................................................2- 1
2.1.2 Print Signal Sequence.............................................................................................................................................2- 2
2.1.3 Print Driving.............................................................................................................................................................2- 3
2.2 Firmware.....................................................................................................................................................2- 5

Contents
2.2.1 Operation Sequence at Power-on............................................................................................................................2- 5
2.2.2 Operation Sequence at Power-off............................................................................................................................2- 6
2.2.3 Print Control.............................................................................................................................................................2- 7
2.2.4 Print Position Adjustment Function........................................................................................................................2- 16
2.2.5 Head Management ................................................................................................................................................2- 16
2.2.6 Printhead Overheating Protection Control.............................................................................................................2- 16
2.2.7 Pause between Pages...........................................................................................................................................2- 16
2.2.8 White Raster Skip..................................................................................................................................................2- 16
2.2.9 Sleep Mode............................................................................................................................................................2- 16
2.2.10 Hard Disk Drive....................................................................................................................................................2- 16
2.3 Printer Mechanical System.......................................................................................................................2- 18
2.3.1 Outline....................................................................................................................................................................2- 18
2.3.1.1 Outline....................................................................................................................................................................................2- 18
2.3.2 Ink Passage...........................................................................................................................................................2- 19
2.3.2.1 Ink Passage...........................................................................................................................................................................2- 19
2.3.2.2 Ink Tank Unit..........................................................................................................................................................................2- 20
2.3.2.3 Carriage Unit..........................................................................................................................................................................2- 22
2.3.2.4 Printhead................................................................................................................................................................................2- 25
2.3.2.5 Purge Unit..............................................................................................................................................................................2- 26
2.3.2.6 Maintenance Cartridge...........................................................................................................................................................2- 30
2.3.2.7 Air Flow.................................................................................................................................................................................. 2- 31
2.3.3 Paper Path.............................................................................................................................................................2- 32
2.3.3.1 Outline....................................................................................................................................................................................2- 32
2.3.3.2 Paper Path............................................................................................................................................................................. 2- 33
2.3.3.3 Cutter Unit..............................................................................................................................................................................2- 36
2.4 Printer Electrical System ..........................................................................................................................2- 37
2.4.1 Outline....................................................................................................................................................................2- 37
2.4.1.1 Overview................................................................................................................................................................................ 2- 37
2.4.2 Main Controller.......................................................................................................................................................2- 39
2.4.2.1 Main controller PCB components ..........................................................................................................................................2- 39
2.4.3 Carriage Relay PCB...............................................................................................................................................2- 41
2.4.3.1 Carriage relay PCB components ...........................................................................................................................................2- 41
2.4.4 Head Relay PCB....................................................................................................................................................2- 41
2.4.4.1 Head relay PCB components................................................................................................................................................. 2- 41
2.4.5 Motor Driver...........................................................................................................................................................2- 42
2.4.5.1 Lower roll unit PCB components............................................................................................................................................2- 42
2.4.6 Maintenance Cartridge Relay PCB........................................................................................................................2- 42
2.4.6.1 Maintenance cartridge relay PCB components......................................................................................................................2- 42
2.4.7 Power Supply.........................................................................................................................................................2- 42
2.4.7.1 Power supply block diagram..................................................................................................................................................2- 42
2.5 Detection Functions with Sensors............................................................................................................2- 43
2.5.1 Covers....................................................................................................................................................................2- 43
2.5.2 Ink passage system...............................................................................................................................................2- 44
2.5.3 Carriage system.....................................................................................................................................................2- 46
2.5.4 Paper path system.................................................................................................................................................2- 48
2.5.5 Others....................................................................................................................................................................2- 50
Chapter 3 INSTALLATION
3.1 Transporting the Printer..............................................................................................................................3- 1
3.1.1 Transporting the Printer...........................................................................................................................................3- 1
3.1.1.1 Transporting the Printer ........................................................................................................................................................... 3- 1
3.1.2 Reinstalling the Printer...........................................................................................................................................3- 13
3.1.2.1 Reinstalling the Printer........................................................................................................................................................... 3- 13
Chapter 4 DISASSEMBLY/REASSEMBLY
4.1 Service Parts..............................................................................................................................................4- 1

Contents
4.1.1 Service Parts...........................................................................................................................................................4- 1
4.2 Disassembly/Reassembly...........................................................................................................................4- 2
4.2.1 Disassembly/Reassembly .......................................................................................................................................4- 2
4.3 Points to Note on Disassembly and Reassembly.......................................................................................4- 2
4.3.1 Note: Items that should never be disassembled......................................................................................................4- 2
4.3.2 Moving the carriage manually..................................................................................................................................4- 2
4.3.3 Units requiring draining of ink..................................................................................................................................4- 2
4.3.4 External Covers.......................................................................................................................................................4- 4
4.3.5 Drive Unit...............................................................................................................................................................4- 17
4.3.6 Cutter.....................................................................................................................................................................4- 19
4.3.7 Carriage Unit .........................................................................................................................................................4- 21
4.3.8 Ink Tube Unit.........................................................................................................................................................4- 26
4.3.9 Pick-up/Feed Unit..................................................................................................................................................4- 29
4.3.10 Purge Unit............................................................................................................................................................4- 32
4.3.11 Waste Ink Collection Unit.....................................................................................................................................4- 33
4.3.12 Ink Tank Unit........................................................................................................................................................4- 43
4.3.13 Multi Sensor.........................................................................................................................................................4- 45
4.3.14 Linear Encoder Sensor........................................................................................................................................4- 48
4.3.15 Head Management Sensor..................................................................................................................................4- 49
4.3.16 PCBs....................................................................................................................................................................4- 50
4.3.17 Opening the Cap/Moving the Wiper Unit.............................................................................................................4- 51
4.3.18 Opening and closing ink supply valves................................................................................................................4- 52
4.3.19 Draining the ink....................................................................................................................................................4- 53
4.4 Applying the Grease.................................................................................................................................4- 54
4.4.1 Applying the Grease..............................................................................................................................................4- 54
4.5 Adjustment and Setup Items ....................................................................................................................4- 57
4.5.1 Adjustment Item List..............................................................................................................................................4- 57
4.5.2 Procedure after Replacing the Carriage Unit or Multi Sensor ...............................................................................4- 57
4.5.3 Procedure after Replacing the Feed Roller or Feed Roller Encoder.....................................................................4- 57
4.5.4 Procedure after Replacing the Head Management Sensor...................................................................................4- 57
Chapter 5 MAINTENANCE
5.1 Periodic Replacement Parts.......................................................................................................................5- 1
5.1.1 Periodic Replacement Parts....................................................................................................................................5- 1
5.2 Consumable Parts......................................................................................................................................5- 1
5.2.1 Consumable Parts...................................................................................................................................................5- 1
5.3 Periodic Maintenance.................................................................................................................................5- 2
5.3.1 Periodic Maintenance..............................................................................................................................................5- 2
Chapter 6 TROUBLESHOOTING
6.1 Troubleshooting..........................................................................................................................................6- 1
6.1.1 Outline.....................................................................................................................................................................6- 1
6.1.1.1 Outline of Troubleshooting.......................................................................................................................................................6- 1
6.2 Location of Connectors and Pin Arrangement............................................................................................6- 2
6.2.1 Main controller PCB.................................................................................................................................................6- 2
6.2.2 Carriage relay PCB................................................................................................................................................6- 12
6.2.3 Head relay PCB.....................................................................................................................................................6- 17
6.3 Version Up................................................................................................................................................6- 21
6.3.1 Firmware Update Tool...........................................................................................................................................6- 21
6.4 Service Tools............................................................................................................................................6- 26
6.4.1 Tool List.................................................................................................................................................................6- 26
Chapter 7 SERVICE MODE

Contents
7.1 Service Mode .............................................................................................................................................7- 1
7.1.1 Service Mode Operation..........................................................................................................................................7- 1
7.1.2 Map of the Service Mode.........................................................................................................................................7- 2
7.1.3 Details of Service Mode...........................................................................................................................................7- 8
7.1.4 Sample Printout .....................................................................................................................................................7- 16
7.2 Special Mode............................................................................................................................................7- 20
7.2.1 Special Modes for Servicing ..................................................................................................................................7- 20
Chapter 8 ERROR CODE
8.1 Outline........................................................................................................................................................8- 1
8.1.1 Outline......................................................................................................................................................................8- 1
8.2 Warning/Error/Service Call Error................................................................................................................8- 2
8.2.1 Code Table ..............................................................................................................................................................8- 2

Chapter 1 PRODUCT DESCRIPTION


Contents
Contents
1.1 Product Overview ....................................................................................................................................... 1-1
1.1.1 Product Overview.................................................................................................................................................... 1-1
1.2 Features ..................................................................................................................................................... 1-3
1.2.1 Features .................................................................................................................................................................. 1-3
1.2.2 Printhead................................................................................................................................................................. 1-3
1.2.3 Ink Tank................................................................................................................................................................... 1-3
1.2.4 Cutter....................................................................................................................................................................... 1-4
1.2.5 Roll Holder............................................................................................................................................................... 1-4
1.2.6 Stand....................................................................................................................................................................... 1-5
1.2.7 Wheeled Output Stacker ......................................................................................................................................... 1-5
1.2.8 Hard Disk Drive ....................................................................................................................................................... 1-5
1.2.9 Consumables........................................................................................................................................................... 1-6
1.3 Product Specifications................................................................................................................................ 1-7
1.3.1 Product Specifications............................................................................................................................................. 1-7
1.4 Detailed Specifications ............................................................................................................................... 1-9
1.4.1 Print Speed and Direction........................................................................................................................................ 1-9
1.4.2 Interface Specifications .......................................................................................................................................... 1-15
1.5 Names and Functions of Components ..................................................................................................... 1-16
1.5.1 Front....................................................................................................................................................................... 1-16
1.5.2 Rear........................................................................................................................................................................ 1-17
1.5.3 Top Cover (Inside).................................................................................................................................................. 1-18
1.5.4 Carriage.................................................................................................................................................................. 1-19
1.5.5 Ink Tank Cover (Inside).......................................................................................................................................... 1-19
1.6 Basic Operation........................................................................................................................................ 1-20
1.6.1 Operation Panel...................................................................................................................................................... 1-20
1.6.2 Main Menu.............................................................................................................................................................. 1-21
1.7 Safety and Precautions ............................................................................................................................ 1-43
1.7.1 Safety Precautions ................................................................................................................................................. 1-43
1.7.1.1 Moving Parts........................................................................................................................................................................... 1-43
1.7.1.2 Adhesion of Ink ....................................................................................................................................................................... 1-44
1.7.1.3 Electric Parts........................................................................................................................................................................... 1-46
1.7.2 Other Precautions................................................................................................................................................... 1-47
1.7.2.1 Printhead................................................................................................................................................................................. 1-47
1.7.2.2 Ink Tank .................................................................................................................................................................................. 1-48
1.7.2.3 Handling the Printer................................................................................................................................................................ 1-49
1.7.3 Precautions When Servicing Printer....................................................................................................................... 1-51
1.7.3.1 Notes on the Data Stored in the Printer.................................................................................................................................. 1-51
1.7.3.2 Confirming the Firmware Version ........................................................................................................................................... 1-51
1.7.3.3 Precautions against Static Electricity...................................................................................................................................... 1-51
1.7.3.4 Precautions for Disassembly/Reassembly.............................................................................................................................. 1-51
1.7.3.5 Self-diagnostic Feature........................................................................................................................................................... 1-51
1.7.3.6 Disposing of the Lithium Battery ............................................................................................................................................. 1-52


Chapter 1
1-1
1.1 Product Overview
1.1.1 Product Overview
0025-9205
This printer is a large-format printer that prints in a maximum width of 44 inches with high-speed photographic picture quality.
This printer is a stand-mounted type printer and is capable of output to either roll media or cut sheet.
F-1-1
T-1-1
[1] Upper Cover [10] Release Lever
[2] Ejection Guide [11] Maintenance Cartridge
[3] Roll Holder Slot [12] Carrying Handles
[4] Roll Holder [13] Maintenance Cartridge Cover
[5] Cut Sheet Protective Cloth [14] Stand
[6] Paper Feed Slot [15] Stopper
[7] Holder Stopper [16] Lower Roll Unit
[8] Ink Tank Cover [17] Lower Roll Unit Lever
[9] Operation Panel
[1]
[9]
[8]
[10]
[2]
[3]
[3]
[4]
[4]
[12]
[5]
[17]
[7]
[16]
[7]
[11]
[12]
[17]
[13]
[14]
[15]
[6]

Chapter 1
1-2
F-1-2
T-1-2
[1] Ethernet Connector [5] Lower Roll Unit Connector
[2] USB Port [6] Carrying Handles
[3] Manual Pocket [7] Accessory Box
[4] Power Supply Connector
[2] [1]
[3]
[4]
[5]
[7]
[6]
[6]

Chapter 1
1-3
1.2 Features
1.2.1 Features
0025-9206
- Media pass in widths up to 44 inches (1117.6 mm).
- Large ink tanks reduce the need for frequent ink replacement.
- Uninterrupted printing from subtanks.
- BK and MBK inks are loaded concurrently to eliminate the need for their replacement.
- Durability will be added by maintenance kit.
- Large LCD panel displays more information and makes operations easier.
- High resolutions of 2400 x 1200 dpi maximum, coupled with the exceptionally light-fast, water-proof and ozone-proof five-color inks of Y, M, C, BK and MBK,
deliver high-quality photographic picture quality.
- USB2.0 Hi-speed interface and 10Base-T/100Base-TX in standard support of a TCP/IP network.
- Barcodes printed on roll media makes measuring the remaining roll length more manageable.
- Borderless four-side printing support (roll media) reduces laborious cutting work, easing the job of creating posters to a significant degree.
- High-speed printing with a 1-inch head for each color (1,280 nozzles), under bidirectional print control.
- The hard disk is installed for better print job management and for driving on night time.
- The product allows two roll medias to be loaded simultaneously, making it possible to mix different sizes or types of paper in a single print job or use two roll
medias of the same paper size to fulfill bulk print needs.
- Ready for CAD drawings output on the HP-GL/2 and HP-RTL.
- The product comes with a wheeled output stacker to print lengthy materials or load bulk print jobs.
Functional enhancements new to this model include:
The processing ability of the printed data will enhance by increase of hard disk drive and memory capacity.
1.2.2 Printhead
0013-2742
The printhead that mounts on the carriage is an integrated six-color disposable printhead.
It has 2,560 nozzles for each color, comprising two rows of 1,280 nozzles each arranged in a staggerd pattern.
If print quality does not improve despite carrying out the specified cleaning, the printhead must be replaced with a new one.
F-1-3
1.2.3 Ink Tank
0020-5419
The ink tanks are disposable.
An ink tank should be replaced when an ink tank replacement prompt message appears.
To install ink tanks, open the ink tank cover of the printer. Ink tanks are furnished with a notch for preventing incorrect installation, which will allow the tanks to
be installed at the position marked in the right color and nowhere else.
The ink tanks are also available in two capacities: 330 ml and 700 ml.
The ink tanks are available in the four dye ink colors of black, cyan, magenta and yellow and the pigment ink color of mat black.
F-1-4

Chapter 1
1-4
1.2.4 Cutter
0020-5420
The cutter attached to the cutter unit is a round cutter.
F-1-5
1.2.5 Roll Holder
0020-5421
The roller holder accepts paper tubes having inside diameters of both 2 and 3 inches. It is furnished with attachments for 2- and 3-inch diameter paper tubes.
The roll holder clamps the paper tube of a roll not exceeding 150 mm in outside diameter from the inside.
F-1-6
[2-inch paper tube attachment]
F-1-7
[3-inch paper tube attachment 1]
F-1-8
[3-inch paper tube attachment 2]
F-1-9

Chapter 1
1-5
1.2.6 Stand
0020-6040
The stand is equipped with casters so that the printer can be easily moved.
F-1-10
1.2.7 Wheeled Output Stacker
0020-5422
This is a output stacker on wheels that is attached to the front of the printer.
F-1-11
T-1-3
1.2.8 Hard Disk Drive
0025-9220
Each print job received from the host computer is saved to the 160GB hard disk drive(serial ATA connection) attached to the printer, so the printer can print the
job repeatedly as needed, without having to wait for its retransmission from the host computer.
Saving print jobs will offer the following benefits:
- Reduced computer workload
A print job may be automatically stored to the hard disk when printing or may be stored to the hard disk without printing. A print job stored to the hard disk may
be printed multiple times without having to use the host computer.
- Reprinting after error occurrence
If the printer encounters errors, such as paper out, while printing a print job, it can resume the print operation as soon as the errors are cleared, without retransmission
from the host computer.
- Higher print work efficiency
Print jobs can be printed selectively or in a specified number of copies without using a host computer. Multiple print jobs can be printed batched. Unattended print
operations in the nighttime are also possible.
[1] Basket [3] Basket foot stand
[2] Basket eject guide [4] Stopper
[1]
[2]
[3]
[4]

Chapter 1
1-6
1.2.9 Consumables
0020-5424
Printhead
The consumable printhead is the same as the one that comes with the printer.
F-1-12
Ink tanks
The consumable ink tanks are available in five colors: mat black, black, cyan, magenta and yellow. Each is further available in two capacities: 300 ml and 700 ml.
Ink tanks that can be used with this printer are labeled "A" on their side.
F-1-13
Maintenance cartridge
The consumable maintenance cartridge is the same as the one that comes with the printer.
F-1-14
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