Canon imageFormula DR-C125 User manual

SERVICE
MANUAL
imageFORMULA
DR-C125
COPYRIGHT ©2011 CANON INC.
CANON imageFORMULA DR-C125 Rev. 0 PRINTED IN U.S.A.
June 1, 2011
Rev. 0

COPYRIGHT © CANON ELECTRONICS INC. 2011
Use of this manual should be
strictly supervised to avoid
disclosure of confidential
information.

PREFACE
This Service Manual describes necessary basic information for field service and maintenance for
maintaining the product quality and functions of this machine.
Contents
Chapter 1: General description
Product specifications, name of parts, operation method
Chapter 2: Functions and operation
Description of operation of machine system and electrical system by function
Chapter 3: Disassembly and reassembly
Disassembly method, reassembly method
Chapter 4: Installation and maintenance
Installation method, maintenance method
Chapter 5: Troubleshooting
Error display and troubleshooting
Appendix: General diagram etc.
Information in this manual is subject to change. Notification of such changes will be given in
Service Information Bulletins.
Thoroughly read the information contained in this Service Manual and the Service Information
Bulletins to gain a correct and deeper understanding of the machine. This is one way of fostering
response for ensuring prolonged quality and function, and for investigating the cause of trouble during
troubleshooting.
Quality Assurance Center
Canon Electronics Inc.
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

CONTENTS
CHAPTER 1 CHAPTER 3
DISASSEMBLY &
REASSEMBLY
GENERAL DESCRIPTION
I. PRODUCT OUTLINE ..............................1-1 I. EXTERNAL PARTS .................................3-1
1. Features..............................................1-1
2. Main Specifications.............................1-2 1. Left Cover............................................3-1
3. Precautions.........................................1-5 2. Right Cover.........................................3-2
II. NAME OF PARTS....................................1-6 3. Rear Cover..........................................3-3
4. Document Feed Tray ..........................3-3
1. Name of Parts.....................................1-6 5. Front Unit ............................................3-4
III. USER OPERATION.................................1-7 II. FRONT UNIT...........................................3-5
1. Placing Documents.............................1-7 1. Eject Pocket........................................3-5
2. Scanning.............................................1-9 2. Front Cover.........................................3-5
3. Clearing Paper Jams ........................1-11 3. Front Unit PCB....................................3-6
4. Feed Roller Drive Shaft.......................3-7
CHAPTER 2 5. Follower Roller....................................3-7
FUNCTIONS & OPERATION III. BASE UNIT..............................................3-8
I. OUTLINE.................................................2-1 1. Control PCB........................................3-8
1. Main Configuration..............................2-1 2. Feed Motor..........................................3-8
2. Feed Path ...........................................2-2 3. Main Motor..........................................3-9
3. Motor Drive .........................................2-3 4. Drive Roller .........................................3-9
4. Electrical Circuits ................................2-4 5. Retard Roller Drive Shaft..................3-11
5. Timing Chart........................................2-5 6. Document Pressure Plate.................3-11
II. READING SYSTEM.................................2-6 7. Flapper..............................................3-12
1. Reading Unit.......................................2-6 IV. READING UNIT.....................................3-13
2. Shading...............................................2-7 1. Reading Unit (Front) .........................3-13
III. FEED SYSTEM .......................................2-8 2. Reading Holder (Front).....................3-14
1. Feeding Mechanism............................2-8 3. Reading Unit (Rear)..........................3-14
2. Feed Error Detection ........................2-11 4. Reading Holder (Rear)......................3-15
IV. CONTROL SYSTEM .............................2-13 CHAPTER 4
1. Control Circuits .................................2-13 INSTALLATION &
MAINTENANCE
2. Image Processing.............................2-15
V. POWER SUPPLY..................................2-17
1. Power Supply....................................2-17 I. INSTALLATION........................................4-1
VI.
LAYOUT OF ELECTRICAL COMPONENTS .2-18 1. System Requirement ..........................4-1
1. Sensors/Motors.................................2-18 2. Checking theAccessories...................4-1
VII. PARTS LAYOUT ON EACH PCB..........2-19 3. Removing the Packing Material..........4-2
1. Control PCB......................................2-19 4. Installing the Software.........................4-2
2. Front Unit PCB..................................2-20 5. Connecting to a Computer..................4-3
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION
6. Power On............................................ 4-3
II. PARTS TO BE REPLACED .................... 4-4
1. Periodically Replaced Parts ............... 4-4
2. Consumable Parts.............................. 4-4
3. Major PartsList................................... 4-5
III. MAINTENANCE...................................... 4-6
1. User Maintenance.............................. 4-6
2. Service Maintenance.......................... 4-8
CHAPTER 5
TROUBLESHOOTING
I. ERROR DISPLAY ................................... 5-1
1. Main Body........................................... 5-1
2. Computers.......................................... 5-1
II. SERVICE MODE..................................... 5-2
1. Outline................................................ 5-2
2. How to Install...................................... 5-3
3. How to Start and Finish...................... 5-3
4. Registration Adjustment ..................... 5-4
5. Light Adjustment................................. 5-6
6. Document Sensor Adjustment............ 5-8
7. All Adjustment..................................... 5-9
8. Dcon Check...................................... 5-10
9. Check Device................................... 5-13
10. Manual Adjust.................................. 5-13
11. Firm Load........................................ 5-19
12. About............................................... 5-20
13. Counter........................................... 5-21
14. Machanical Feed Mode................... 5-22
15. Recovery of Log Files ..................... 5-22
III. LIST OF FAILURES .............................. 5-24
1. Operation Failures............................ 5-24
2. Image Failures.................................. 5-24
IV. OPERATION TROUBLESHOOTING.... 5-25
1. Power Does Not Come ON.............. 5-25
2. No Scanner is Found........................ 5-26
3. Scanning Does Not Start.................. 5-26
4. Scanner Does Not Feed Properly.... 5-27
5. Scanning Speed is Slow................... 5-28
6. The Eject Location is Incorrect......... 5-28
V. IMAGE TROUBLESHOOTING.............. 5-29
1. All Black/All White/All Streaked........ 5-30
2. Too Dark/Too Light............................ 5-30
3. Streaks in Image............................... 5-31
4. Image Slanted .................................. 5-31
5. Wrong Image Size............................ 5-32
6. Text Cannot be Seen........................ 5-32
7. Moire in Image.................................. 5-33
8. Top/Bottom of Image Incorrect......... 5-33
IV. AFTER REPLACING PARTS................ 5-34
APPENDIX
I. GENERAL CIRCUIT DIAGRAM..............A-1
II. LIST OF SPECIAL EQUIPMENT............A-2

CHAPTER 1
GENERAL DESCRIPTION
I. PRODUCT OUTLINE.............................. 1-1
I
I. NAME OF PARTS................................... 1-6
III. USER OPERATION ................................ 1-7
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

CHAPTER 1 GENERAL DESCRIPTION
I. PRODUCT OUTLINE
1. Features
1) Minimized actual scanning occupant area by the upright U-turn path.
Occupant area from top view (A4 size document)
ÆApprox. 750 cm² (Less than a half of DR-2510C)
2) Improvement of reliability for the pickup and separation operations.
Feed roller and Retard roller are improved.
New mechanisms are provided.
3) Straight path
It can be scanning for a card and a long document.
4) Natural Placement of Document “Face-up feeding”
Real direction setting for document, None of up side down as setting
5) Scanning speed (A4, 200dpi)
25ppm/50ipm at B&W, gray and color modes
6) Automatic image processing
Auto-color detection and Auto-resolution modes
Full-auto mode (2 modes above + Auto-size, Deskew, Blank skipping and Text
Orientation)
7) Hybrid OS
Both Windows and Mac OS are supported.
“Windows” is a trademark of Microsoft Corporation in the U.S. and other countries.
Other company names and product names mentioned in this document are registered trademarks or
trademarks of the respective companies.
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION 1-1

CHAPTER 1 GENERAL DESCRIPTION
2. Main Specifications
No. Item Specifications
1 Type Desktop type sheet-fed scanner
2 Dimensions
*See details at following. 1) Tray closed: 300 (W) x 156 (D) x 217 (H) mm 2) Tray opened: 300 (W) x 235 (D) x 336 (H) mm
3 Weight 2.6kg (Main body only)
4 Power supply AC adapter
Input: 100V-240VAC, 50/60Hz
0.53A (100V)-0.3A (240V)
Output: 16VDC, 1.4A
5 Power consumption 1) Maximum operation: 12.7W (100V/120V), 12.8W
(220-240V)
2) Sleep mode: 1.8W (100V/120V), 1.9W (220-240V)
3) Power switch OFF: 0.5W
6 External interface USB 2.0 (Hi-speed)
7 Expected product life
(In-house information
only)
One of the following two items, whichever comes first.
1) 5 years
2) 500,000 sheets (A4)
*Replace parts if necessary.
8 Installation By user.
9 Option 1) Flat bed scanner: FSU 101
10 Consumable parts
(Commercial goods) 1) Exchange Roller Kit *Feed roller and Retard roller
*Replaced by user. Expected life is 100,000 sheets.
11 Bundle software 1) ISIS/TWAIN driver, CaptureOnTouch
2) Others depend on Sales region
12 Sensor type, Density 1 line/3 parallel-CMOS contact image sensor, 600dpi
13 Sensor operation mode 600dpi or 300dpi
14 Effective reading width 216mm
15 Light source 3-color (RGB) LED, Single-side illumination
16 Background color White
17 Image data memory SDRAM 16MB
*Used for the working memory together.
18 Output data to computer 1) Type: 8bit gray or 24bit color (non-compression)
2) Resolution: 600x600dpi, 600x400dpi, 300x300dpi,
300x200dpi, 300x150dpi
Table 1-101a
1-2 COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

CHAPTER 1 GENERAL DESCRIPTION
No. Item Specifications
19 Mode setting in driver 1) Binary: B&W, Error diffusion, ATE, ATE-II
2) Gray: 8bit
3) Color: 24bit
*Auto-Color detection mode can be available.
20 Resolution setting in
driver 600x600dpi, 400x400dpi, 300x300dpi, 200x200dpi, 150x150dpi *Auto-resolution mode can be available.
Mode Resolution Simplex/Duplex
200dpi 25ppm/50ipm
300dpi 25ppm/50ipm
B&W
(TIFF) 600dpi 13ppm/26ipm
200dpi 25ppm/50ipm
300dpi 25ppm/50ipm
Gray
(JPEG) 600dpi 13ppm/26ipm
200dpi 25ppm/50ipm
300dpi 15ppm/30ipm
Color
(JPEG) 600dpi 4ppm/6ipm
21 Scanning speed
(A4 size)
*Using computer for evaluation. The numbers above come
from no special image treatments, and may differ depending
on the computer, the function settings and other conditions.
22 Document feed path U-turn path and straight path
*Manual selection is available.
23 Document size 1) Width: 50.8 to 216mm
2) Length: 53.9 to 355.6mm
*Length 297mm more should be 1 sheet feeding, 70mm
less should be fed with straight path.
24 Document weight
(Thickness) 1) U-turn path: 52 to 128g/m2(0.06 to 0.15mm) 2) Straight path: 40 to 209g/m2(0.05 to 0.25mm)
25 Special document Plastic Card, Business card, Folio, Long document
(3000mm) and others are available.
*There are some limitations required.
26 Document storage 1) Pickup: 30 sheets max. and 6mm height max.
2) Eject: 30 sheets max. and 6mm height max.
*Including curls. Special document have special conditions.
Eject for straight path is 1 sheet only.
27 Double feed detection 1) Length detection by registration sensor
2) Double feed detection by ultrasonic sensor
Table 1-101b
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION 1-3

CHAPTER 1 GENERAL DESCRIPTION
No. Item Specifications
28 Operation/Indication 1) Power button (with LED)
2) Start button
3) Eject selection lever
4) Feed selection lever
5) OPEN button
Table 1-101c
External dimensions (mm)
Figure 1-101
1-4 COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

CHAPTER 1 GENERAL DESCRIPTION
3. Precautions 4) Electromagnetic wave interference
This machine complies with some
standards regarding electromagnetic
wave interference, such as VCCI and
FCC. However, the user may have to
take countermeasures if the machine
causes electromagnetic wave
interference.
This section describes items that
require particular care, for example,
regarding human safety.
These precautions must be observed.
The user should be explained the items that
relate to user safety and instructed to take
appropriate actions.
1) Power OFF in emergency 5) “User Manual”
Read each “User Manual” thoroughly
prior to use of this machine.
If such abnormal conditions as
extraordinary noise, smoke, heat and
odor occur, immediately unplug the
power cord. 6) Disposal
Follow local regulations when disposing
of the product and parts. This product is
subject to the WEEE Directive in Europe.
Be careful not to get clothing (ties, long
hair, etc.) caught in this machine as it
may cause injury. Should this occur,
immediately unplug the power cord.
Do not insert fingers in the feed section
while moving the rollers.
2) Power OFF on disassembling
When disassembling and assembling are
performed, unplug the power cord.
3) Prohibition of modify
This machine must not arbitrarily be
modified or remade. If it is, use may be
forcibly suspended.
To change the specifications or
disassemble and reassemble this
machine, follow the instructions
described in this manual and the service
information.
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION 1-5

CHAPTER 1 GENERAL DESCRIPTION
II. NAME OF PARTS
1. Names of Parts
Front View
Figure 1-201
Figure 1-202
{
1Front unit
{
2Eject pocket
{
3Power button
{
4Start button
{
5Feed selection indicator
{
6Feed selection lever
{
7Feed extension plates
{
8Eject support
{
9Feed support
{
10 Document feed tray
{
11 Connectors
{
12 Eject selection lever
Connectors Rear View
Figure 1-203 Figure 1-204
{
1Power connector
{
2USB connector
{
1OPEN button
{
2Kensington slot
1-6 COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

CHAPTER 1 GENERAL DESCRIPTION
III. USER OPERATION
This section shows how to scan several
sheets of a regular paper document using
the initial settings of CaptureOnTouch. For
details on other operations, refer to the
“User Manual” for this machine.
For installation and maintenance, refer
to “CHAPTER 4 INSTALLATION &
MAINTENANCE”.
1. Placing Documents
1) Open the document feed tray and extend
the feed extension plates and eject
support to suit the document.
Figure 1-301
Figure 1-302
Figure 1-303
Figure 1-304
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION 1-7

CHAPTER 1 GENERAL DESCRIPTION
2) Set the feed selection lever and eject
selection lever.
Note:In this example, these are set to page
separation and U-turn eject.
Figure 1-305
Figure 1-306
3) Place the document, and adjust the
document guides to fit the document
width.
Note:In this example, the document is
placed with the writing facing you and
the top of the document at the top.
Figure 1-307
1-8 COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

CHAPTER 1 GENERAL DESCRIPTION
2. Scanning
This section describes how to scan
using [Scan First] in CaptureOnTouch in
Windows OS.
Note:CaptureOnTouch is TWAIN
compatible
application software.
1) Start CaptureOnTouch.
Double-click the CaptureOnTouch icon in
the task bar to start CaptureOnTouch.
Figure 1-308
2) When the main screen is displayed, click
[Scan First].
Note:Since [Scan First] is enabled by
default, this operation is not required.
Figure 1-309
3) Change the [Enable continuous
scanning] and [Scans in the full auto
mode] settings as needed.
Note:
In this example, set [Enable continuous
scanning: OFF] and [Scans in the full
auto mode: ON].
Figure 1-310
4) Click the Start button to start the scan.
Figure 1-311
COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION 1-9

CHAPTER 1 GENERAL DESCRIPTION
5) The scanned image is displayed on the
screen. Once you have finished, click the
[Next step] button.
Figure 1-312
6) The output settings are displayed.
Configure the settings and click the
buttons as needed.
Note:The button names vary depending on
the output method.
Figure 1-313
7) When the output is complete, the finished
screen is displayed.
Figure 1-314
Reference: Scanner Settings Screen
You can display the settings on the
screen by setting [Scans in the full auto
mode: OFF] in the step 3. You can then
open the advanced settings dialog box
by setting [Use advanced settings dialog
box: ON] and clicking the button on the
right.
Figure 1-315
Figure 1-316
1-10 COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION

COPYRIGHT © CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION 1-11
CHAPTER 1 GENERAL DESCRIPTION
3. Clearing Paper Jams
1) Remove any remaining documents from
the document feed tray.
Figure 1-317
2) Press the OPEN button and open the
front unit out towards you. Remove any
jammed documents.
Figure 1-318
Figure 1-319
3) If the document is jammed in the eject
side, open the eject pocket. Remove any
jammed documents.
Figure 1-320
Figure 1-321