Canon 8800F - CanoScan - Flatbed Scanner User manual

R2·Confidential
CanoScan 8800F
SERVICE MANUAL
Revision 0
QY8-13BQ-000
CANOSCAN 8800F JP 2168B001AA
CANOSCAN 8800F US 2168B002AA
CANOSCAN 8800F CA 2168B003AA
CANOSCAN 8800F GB 2168B008AA
CANOSCAN 8800F EUM/EMB 2168B009AA
CANOSCAN 8800F AU 2168B011AA
CANOSCAN 8800F ASA 2168B012AA
CANOSCAN 8800F H
K
2168B013AA
CANOSCAN 8800F CN 2168B014AA
CANOSCAN 8800F K
R
2168B016AA

Application
This manual has been issued by Canon Inc. to provide information necessary to self-study techniques, setting-
up, maintenance and repair to technicians who service the target products. This manual covers all locations
where the target products are sold. For this reason, there may be information in this manual that does not apply
to your locality.
Revision
This manual might include technically incorrect descriptions or misprints because the target products may be
improved or changed. For this reason, service information is being published in case of any changes in this
manual. If this manual is having a significant change, in long or in short term, a revised edition will be carried
out.
The following paragraph does not apply to any countries where such provisions are inconsistent with local law.
Trademarks
The product names and company names described in this manual are the registrered trademarks or tradmards of
the individual companies.
Copyright
The copyright of this manual belongs to Canon Inc. Under the copyright law, this manual may not be copied,
reproduced or translated into another language, in whole or in part, without the written consent of Canon Inc.,
always excepting the cases where copying a part of this manual is needed by business necessity.
Copyright c2007 by Canon Inc.
Canon Inc.
Ink Jet Scanner&FAX Quality Assurance Division
3-451 Tsuka
g
oshi, Saiwai-ku, Kawasaki-shi, Kana
g
awa 212-8530, Ja
p
an

This manual is provided into 4 sections providing each necessary information to service the target product.
Part 1: Maintenance
Maintenance and repair related information of the target product Part 3:
Part 2: Technical Reference
Technical matters such as new techniques and FAQ of the target product
Part 3: Parts Catalog
Parts catalog of the target product
Part 4: Appendix
Block diagram and specifications of the target product
CanoScan 8800F Service Manual
Outline
<Outline>

CONTENTS
Part 1: Maintenance
1. Maintenance
1-1 Service Engineer adjustment/Periodic Replacement/Periodic Inspection/Replacement of Consumable
1-2 Customer Maintenance
1-3 Product Life
1-4 Special Tools
1-5 Serial Number Indicating Location
2. Troubleshooting
2-1 Troubleshooting by Symptom
3. Servicing
3-1 Advisory for Replacement of Service Part
3-2 Instruction for Servicing
4. Transport
Part 2: Technical Reference
1. New Features
Part 3: Parts Catalog
Part 4: Appendix
1. Block Diagram
2. Specifications
CanoScan 8800F Service Manual
I. CONTENTS
<CONTENTS>

R2·Confidential
P
art 1
Maintenance

1-1 Service Engineer adjustment/Periodic Replacement/Periodic
Inspection/Replacement of Consumable
1-1-1 Adjustment
1-1-2 Periodic Inspection
1-1-3 Periodic Replacement
1-1-4 Replacement of Consumable
CanoScan 8800F Maintenance
1. Maintenance
ITEM PERIOD PURPOSE TOOL TIME
N/A
ITEM PERIOD PURPOSE TOOL TIME
N/A
ITEM PERIOD PURPOSE TOOL TIME
N/A
ITEM PERIOD PURPOSE TOOL TIME
N/A

1-2 Customer Maintenance
1-3 Product Life
1-3-1 Main Body
The following 1 or 2, which comes earlier
1. Scan Count: 15,000 scans
2. Age of Service: 3 years
1-4 Special Tools
1-5 Serial Number Indicating Location
Back side of the main body
ITEM PERIOD PURPOSE TOOL TIME
N/A
NAME TOOL NUMBER PURPOSE REMARKS
N/A
<1. Maintenance>

2-1 Troubleshooting by Symptom
CanoScan 8800F Maintenance
2. Troubleshootin
g
SYMPTOM
A
CTION REMARKS
MalfunctionUnit does not turn the power on
Spontaneously shuts down right after turned on Replace AC adapter or replace MAIN PCB ASS'Y
Carriage does not operate Replace MOTOR ASS'Y
or replace MAIN PCB ASS'Y
A
coustic noise Eliminate the foreign substance
or replace MOTOR ASS'Y
or replace MAIN PCB ASS'Y
or replace CARRIAGE ASS'Y
Scanning lamp does not light up Replace CARRIAGE ASS'Y
or replace MAIN PCB ASS'Y
Faulty
scanned
image
Blurred image Clean PLATEN GLASS ASS'Y
or replace CARRIAGE ASS'Y
or replace MAIN PCB ASS'Y
Solid vertical line Clean PLATEN GLASS ASS'Y
or replace CARRIAGE ASS'Y
Solid horizontal line Check the connection with PC
or replace USB cable
or replace MAIN PCB ASS'Y
Faulty color reproduction Replace MAIN PCB ASS'Y
<2. Troubleshooting>

3-1 Advisory for Replacement of Service Part (also for disassembly and
assembly)
CanoScan 8800F Maintenance
3. Servicin
g
REPLACING SERVICE
PART NOTE FOR REPLACEMENT*1 ADJUSTMENT /SETTING UP VERIFYING OPERATION
MAIN PCB ASS'Y Disconnect the power cord,leave the unit
about 1 minute (to discharge the stored
charge of the capacitor) and dismount
the part (to prevent MAIN PCB ASS'Y
broken)
Enforce scan operation
CARRIAGE ASS'Y Be careful not to touch mirrors or CCD
PCBs.
Be careful not to put dirt or fingerprint on
the light guide.
Enforce scan operation
PLATEN GLASS ASS'Y
(FE2-0201-000) Be careful not to put dirt or fingerprint on the document glass. Enforce visual inspection
1:Note for entire work
Have a careful look on the wiring arrangement of flexible cable and harness, and connection of connectors. [Refer to 3-2
Instruction for Servicing (1) Wiring arrangement of flexible cable and harness, and connection of connectors]
Be careful not to drop down ferrite core to be broken.
Be careful not to let electrostatic break electric parts down.
Disconnect the power cord, leave the unit about 1 minute (to discharge the stored charge of the capacitor) and dismount the
part (to prevent MAIN PCB ASS'Y broken).
Do not stain inappropriate part with TIMING grease. Do not scratch or damage parts and the unit.
Be careful not to damage or stain external cover.

3-2 Instruction for Servicing
3-2-1 Detaching the front cover
1) Lift the bottom side of the front cover as shown in the picture and detach the cover pulling the upper side
outwards.
2
)
Detach the front face and front cover liftin
g
u
p
the bottom side of the front face.

3-2-2 Attaching the front cover
1) Attach the front face.
2) Attach the front cover putting hooks on both sides of the front cover to the main unit.

3-2-3 Handling the carriage unit
1) If CCD is shocked, the optical axis will be out of alignment and scanned images will not be outputted properly.
Be careful when handling a carriage unit.
2) Be careful not to put dirt or dust on the light guide.

3-2-4 Detaching the FFC cable
N
otice:
Be careful not to crease the FFC cable.
This operation is performed in the area around CCD. If CCD is shocked, the optical axis will be out of alignment
and scanned images will not be outputted properly. Be careful when handling a carriage unit.
1) Move the carriage to the center of the main unit. Pull the FFC cable to the near side and take it from the hook.

2) Lift the hook on the connecter.
3) Pull the ferrite cores to the near side while pushing them down and detach the ferrite cores and the FFC cable.

3-2-5 Detaching the FFC cable (Main PCB)
1) Lift the hook on the connecter and then detach the FFC cable.
<3. Servicing>

4-1 Transport
When a unit, such as after repairing, is being transported, it needs a few cares in preparation for
transport.
1) Turn on the power switch of scanner and return Carriage unit to home position.
2) Move the lock switch to ON side to fix Carriage unit.
3) Fix the scanner body with tape. [See the figure below]
Note:Use a fixing tape almost equivalent to the polyester one used for shipping product. (A tough, not easily
peelable tape which would not leave its glue after peeled. )
CanoScan 8800F Maintenence
4. Transport
<4. Transport>

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P
art 2
Technical Reference

(1) CCD scanner with white LED, no need to warm up
High brightness white LED is used as light source for reflective documents and films.
To scan high quality images, technology to convert point light source of LED to line light source with uniform
intensity is essential. It is realized by applying our unique technology for optical guiding device development
acquired by CIS unit development of LiDE series.
Warming up required for traditional fluorescent lamp (approximately 30 seconds at normal temperatures) is no
longer needed. The first scanning starts immediately.
Turning on lamp after scanning is not required. It also serves the energy-conservation.
(2) Faster scanning speed at low resolution
The scanning speed at 300/600dpi, which is often used to scan reflective documents, becomes faster by improving
the data reading method from CCD.
Color 300dpi : 1.0msec/line (8600F: 3.6msec/line)
Color 600dpi : 1.7msec/line (8600F: 3.6msec/line)
(3) Reduced body size
N
ewly designed carriage (ST lens is used) and white LED used as light source of FAU allow to make the body
approximately 17% thinner than that of 8600F.
CanoScan 8800F Technical Reference
1. New Features
<1. New Features >

CanoScan 8800F Technical Reference
2. Product FAQ (Particular problems and their corrective
actions
)
Item Frequency Function Symptom Condition Cause Solution Expected
Call/Complaint
1 B scan Solid vertical
line on the
image
Scan Calibration is
not executed
properly
Execute
calibration Solid vertical line on the image
2 B Acoustic
noise when
the power
turned on
Lock switch
is not released Release the lock switch Acoustic noise
3 A scan Thumbnail
does not
display
normally
Film scan
Film scan with
overexposure /
underexposure
films
Film images
are not
recognized as
images
Set
Thumbnail
"OFF" and
scan
Thumbnail does
not appear
<2. Product FAQ>

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P
art 3
Part Catalog