Apple Color Onescanner 600.27 Service Manual

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Service Source

Color OneScanner 600/27

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Service Source

Basics

Apple Color OneScanner 600/27

Basics Overview - 1

Overview

Color OneScanner 600/27

The Color OneScanner 600/
27 is a compact, digital­image color scanner with a
maximum mechanical
resolution of 300 x 600 dpi.

Basics Overview - 2

An optional accessory for the
Color OneScanner 600/27
is an Automatic Document

Automatic Document Feeder

Feeder (ADF) with a 20­sheet capacity paper tray.

Basics Overview - 3

Scanner Features

Features of the Color OneScanner 600/27 include the
following:

• 300 x 600 dpi optical, 2400 x 2400 dpi interpolated,
resolution for improved Optical Character Recognition
(OCR) accuracy

• 27-bit scanning depth color that recognizes up to 134­million colors

• Support for PICT, TIFF, JPEG, EPS, BMP, and
Photoshop; compatible with most popular word
processing, presentation, image-editing, page layout,
and web-authoring software for the Macintosh

• OneScanner Dispatcher software that integrates with
popular applications and provides the tools to scan, edit,
and archive images or documents; supports Drag and
Drop

• Small desktop footprint of 16.3 in by 11.3 in

Basics Overview - 4

• ColorSync for the closest possible color match between
what is scanned, seen on the monitor, or printed

• Xerox TextBridge for converting scanned documents into
editable text or HTML format for a Web page

• Optional 20-sheet capacity Automatic Document Feeder

Basics Overview - 5

Scanner Operation

Clicking the icon at left launches a MoviePlayer animation
sequence that shows the following scanning cycles:

• Flatbed scanning where the document remains stationary
and the scanner lamp moves to scan from the front

• Automatic Document Feeder (ADF) scanning where the
document moves and the scanner lamp remains in one
position to scan from the front

Note:

Also shown in the animation sequence is Transparent
Media Adapter (TMA) scanning where the document remains
stationary and the TMA lamp moves to scan from the back.
This type of scanning is available with the TMA option for
the Apple Color OneScanner 1200/30. A TMA option is not
available for the Apple Color OneScanner 600/27.

Basics Overview - 6

Optical Assembly Handling Precautions

Issue

: The Color One Scanner 600/27 optical assembly is
being damaged during removal.

Solution:

by the longer sides (see illustration on next page) so that the
printed circuit board (CCD unit) on the underside will not
be damaged. The CCD unit is a delicate part located on the
front, or shorter side of the assembly. If a service provider
grabs or touches the CCD unit while removing or replacing
the scanner, the scanner may not function. In addition, new
packing was designed for the scanner unit.

Note

Assembly in Take Apart.

Apple recommends handling the scanner assembly

: For additional information, refer to the Optical

Basics Overview - 7

Hold or lift the optical
assembly by the long sides,

CCD Unit

Mirrors

never by the shorter sides.

Caution:

Do not touch the
printed circuit board (CCD
Unit) or the mirrors.

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Service Source

Specifications

Color OneScanner 600/27

Specifications Characteristics - 1

Characteristics

Scanner T ype

Scanner Resolution

Maximum Document Size

Speed

Interface

Flatbed, Single pass, 27-bit scanning

300 x 600 dpi
2400 x 2400 dpi interpolated

8.5 by 11.5 in.

8.5 by 14 in. with optional Automatic Document Feeder

Color: 20 seconds (US letter size)
Monochrome: 10 seconds (US letter size)

SCSI-2

Specifications Electrical - 2

Electrical

Line V oltage

Frequency

Power Consumption

100/120/200/220/240 VAC ± 10%

48–62 Hz ± 10

35 W (maximum)

Specifications Physical - 3

Physical

Size

Weight

Height: 3.1 in. (79 mm)
Width: 11.3 in. (287 mm)
Depth: 16.3 in. (414 mm)

13.2 lb. (6 kg)

Specifications Environmental - 4

Environmental

Temperature

Relative Humidity

50–90.5°F (10–32.5°C)

20–80% noncondensing

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Service Source

Troubleshooting

Color OneScanner 600/27

Troubleshooting General/ - 1

General

The Symptom Charts included in this chapter will help you
diagnose specific symptoms related to your product. Because cures
are listed on the charts in the order of most likely solution, try
the first cure first. Verify whether or not the product continues to
exhibit the symptom. If the symptom persists, try the next cure.
(Note: If you have replaced a module, reinstall the original module
before you proceed to the next cure.)

For additional assistance, contact Apple Technical Support.

Troubleshooting Wiring Diagram/ - 2

Wiring Diagram

CDD Drive Board

(Optical Assembly)

J201

1 2 3 4 5 6 7 8 9 10 11 12 13

YEL

YEL

YEL

YEL

YEL

YEL

YEL

YEL

YEL

YEL

YEL

YEL

Drive Motor

LED

1 2 3

J401

Inverter

Scanning Lamp (Optical Assembly)

Board

J402

1 2 3

BRN
ORN
RED
YEL

RED
BLK

RED
BLU
WHT

BRN
BLK
ORN
BLK
BLK
BLU

J301

J311

A

1
2

A*

3

B

4

B*

J309

12+5V

GND

J310

1

+24V

2

GND

3

LON*

J307

1

+5V

2

DGND

3

+12V

4

AGND

5

24V GND

6

+24V

1 2 3 4 5 6 7 8 9 10 11 12 13

BGR

GND

+12V

+A5V

CPCKN

RSN

SPCKN

SHN

F2N

F1N

J306

1

HPSNS

2

GND

3

VCC

Logic Board

BRN
YEL
BLU

Home

Position

Sensor

1
2
3

WHT
WHT

1 2 3 4 5 6

J101

Power Supply Board

Troubleshooting Symptom Charts/Normal Startup Sequence (Flatbed Scanning) -

Symptom Charts

Normal Startup Sequence (Flatbed Scanning)

Important:

the startup sequence. Even when turned off, some computers will
not allow the scanner’s normal startup sequence to begin if the
SCSI cable is connected.

1 Power on
2 Power LED lights
3 Logic board self-tests
4 Lamp turns on
5 Optical assembly moves to home position sensor at top of

6 Lamp turns off, then on
7 Lamp intensity checked with reflection of white on back of

8 Origin of scan is determined by black strip on back of

9 Lamp moves about 3 mm down
10 Lamp moves back to home position sensor
11 Lamp turns off
12 Ready

Disconnect the scanner’s SCSI cable before beginning

glass

glass

glass

Startup Troubleshooting Tips

When scanner is turned
on, there is a chattering
sound and it will not
scan.

When trying to scan
from the Dispatch
software, this message
appears: “Unable to
initialize the scanner
driver. Either the
scanner is not turned
on, connected, or
already in use by another
application.”

The SCSI select switch
doesn’t select the correct
SCSI ID.

Unlock the scanner by opening the top cover and using a coin or
slotted screwdriver to turn the locking mechanism, located at
the top of the glass.
unlock icon is at 90 degrees from the slot. See the Additional
Procedures chapter for more information.

1 The most common cause is that the scanner was turned on

after the Macintosh. Always make sure the scanner is
turned on, then turn on the Macintosh. Observe the INITs
as the Macintosh starts up. The INIT for the scanner
appears as a side view of the scanner. This is the driver
loading.

2 If the scanner INIT does not appear, reinstall the scanner

driver. If the icon appears with an “X” through it, there
is a SCSI problem.

3 Check the SCSI ID and cables.

The label may not be lined up correctly to the position of the
switch. Put the switch in the 12 o’clock position and then count
to the correct SCSI ID.

Note:

The arrow that points to the lock or

Troubleshooting Symptom Charts/General Troubleshooting - 4

General Troubleshooting

No LED (no power) 1 Check external power cable and incoming voltage.

2 Remove the covers, glass, and optical assembly. Check AC

voltage to power supply board by turning power ON and
testing for rated AC voltage at the AC input pin (pin L) on
the power supply board. If readings are not to rated
voltages, replace power supply board.

3 With power OFF, reconnect the optical assembly at J301.

Turn power ON and check voltages at J101.

J101 DC Voltage

GND-1 4.75 to 5.25

GND-3 11.4 to 12.6

GND-6 21.6 to 26.4

4 If any voltages are not correct, replace the power supply

board.

5 Turn scanner off. With power OFF, remove connector

J301 from the logic board. Turn power ON and check the
voltages at J101 again. If readings are within specified
ranges, replace the optical assembly, since the CCD

driver is faulty.
6 Turn scanner OFF and reconnect J301.
7 With power OFF, remove connector J311 from the logic

board. Turn power ON and check the voltages at J101

again. If readings are within specified ranges, replace the

drive motor.
8 Turn scanner OFF and reconnect J311.
9 With power OFF, remove connector J306 from the logic

board.
10 Turn power ON and check voltages at J101 again. If

readings are within specified ranges, replace the home

position sensor and/or home position sensor cable.
11 Turn scanner OFF and reconnect J306.
12 With power OFF, remove connector J309 from the logic

board.
13 Turn power ON and check voltages at J101 again. If

readings are within specified ranges, replace the LED

cable. If readings are not within specified ranges, replace

the logic board.
14 Turn scanner OFF and reconnect J309.

Troubleshooting Symptom Charts/General Troubleshooting - 5

Lamp does not light 1 Check connection at J402.

2 Remove the covers, glass, and optical assembly. With

power OFF, reconnect the optical assembly at J301. Turn

power ON and check voltages at J101.

J101 DC Voltage

GND-1 4.75 to 5.25

GND-3 11.4 to 12.6

GND-6 21.6 to 26.4

3 If any voltage is not correct, replace power supply board.
4 Connect J310 pin 2 to ground. Verify that scanner lamp

lights. If lamp does not light, replace logic board.
5 Connect J402 pin 2 on inverter board to ground. Verify

that scanner lamp lights. If lamp does not light, replace

inverter board. If lamp lights, replace optical assembly.

Lamp turns on, but
scanner drive motor is
not working

1 Make sure scanner optical assembly is unlocked. See

Additional Procedures chapter for information.
2 Check connections at J307 and J311.
3 Remove optical assembly and turn on scanner. If motor

works, make sure the glass is oriented correctly. Go to

symptom “Scanner does not find Home sensor”.
4 With scanner on, check voltages at connector J101.

J101 DC Voltage

GND-1 4.75 to 5.25

GND-3 11.4 to 12.6

GND-6 21.6 to 26.4

5 If any voltages are not correct, go to symptom “No LED,

no power” in this chapter.
6 Turn power off and check resistance in the drive motor by

measuring at connector J311.

J311 pins Resistance

1 and 2 about 17.3 ohms

3 and 4 about 17.3 ohms

7 If resistance is not correct, replace drive motor. If

resistance is correct, check connection at J311 and if it

is normal, replace logic board.

Troubleshooting Symptom Charts/General Troubleshooting - 6

Problem with lamp
intensity checked or
origin of scan area

Scanner does not find
Home sensor; scanner
drive motor does not
move mirror, even
when optical assembly
is removed

When the Apple Color
OneScanner Plug-in is
moved to the Photoshop
Acquire folder it doesn’t
work. The Dispatch
doesn’t work either.

When using the
Automatic Document
Feeder (ADF), the scan
shows a blank page or a
strange vertical pattern.

1 Make sure glass is oriented correctly and that nothing is

blocking the black strip or upper portion of the glass.
2 Replace glass.

1 Inspect mirror assembly on optical assembly for damage

to the home position flag. Replace optical assembly if

needed.
2 Replace home sensor (photo-interrupter).
3 Replace logic board.

The Apple Color OneScanner Plug-in must be left in it’s folder.
You can make a copy of it, or an alias and put that in the Acquire
folder. You cannot change the name of the original plug-in. It
must keep the name “Apple Color OneScanner”.

Check to see if paper has been left on the flatbed. Before using
the ADF, always check to see that the flatbed is empty.

Cannot fax multiple
pages with the ADF.

ADF does not feed paper
to scanner

Scan each page and merge them together before faxing them.

1 Check connection at document feeder connector cable.
2 Close document feeder cover completely.
3 Verify that document originals in the feeder are standard

office papers and do not exceed the maximum thickness of

2 mm (5/64 in) or 20 sheets.
4 Verify that document originals are free from

• Tears, perforations, or punch holes

• Curls or wrinkles

• Carbon backing or coarse texture

• Labels, tape, or glue

• Staples or clips

5 Replace logic board.

Troubleshooting Symptom Charts/Image Defects - 7

Image Defects

Image not correct, white
only, black only, or
grey.

1 Check SCSI cable connection.
2 Check whether scanning lamp is lighting. If not, go to

symptom “Lamp does not light” in this chapter.
3 With power off, remove connector J307. Turn on power

and check voltages at J101 on the power supply board.

J101 DC Voltage

GND-1 4.75 to 5.25

GND-3 11.4 to 12.6

GND-6 20.4 to 27.6

4 If these voltages are not present, go to symptom “No LED

(no power)” in this chapter.
5 Replace logic board.
6 Check connector at J301 and if it is normal, replace

optical assembly.

Troubleshooting Symptom Charts/Image Defects - 8

Image blurred 1 Use a soft, dry cloth to clean top of glass.

2 Check mirror for dust or obstructions.
3 Replace optical assembly.

A

Troubleshooting Symptom Charts/Image Defects - 9

Uneven image density or
lines (horizontal)

A
A

1 Use a soft, dry cloth to clean top of glass.
2 Check underside of glass to make sure the white plate is

intact.
3 Check connections at J301 and J310 on the logic board.
4 Replace logic board.
5 Replace optical assembly.

A

Troubleshooting Symptom Charts/Image Defects - 10

Uneven image density or
lines (vertical)

A
A

A

1 Use a soft, dry cloth to clean top of glass.
2 Check underside of glass to make sure the white plate is

intact.
3 Check mirrors for dust or obstructions.
4 Replace logic board.
5 Replace optical assembly.

A

Troubleshooting Symptom Charts/Image Defects - 11

Image is misaligned
(vertical)

1 Make sure the mirror on the optical assembly is not

obstructed.
2 Replace optical assembly.

Troubleshooting Symptom Charts/Image Defects - 12

Image is distorted 1 Replace optical assembly.

2 Replace logic board.

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Service Source

T ak e Apart

Color OneScanner 600/27

Take Apart Top Cover with Hinge - 1

Top Cover with Hinge

Top Cover with Hinge

No preliminary steps are
required before you begin
this procedure.

Take Apart Top Cover with Hinge - 2

Lift the top cover straight
off the scanner.

Top Cover with Hinge

Take Apart Glass Cover - 3

Glass Cover

Before you begin, remove

Glass Cover

the top cover with hinge.

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Glass Cover - 4

1 Using a jeweler’s flat-

blade screwdriver,
release the two glass
cover latches.

2 While pressing the

power switch, carefully
lift off the glass cover.

Power Switch

Latch

Caution:

When
removing the glass cover
assembly, make sure you
don’t damage the LED
cable.

Take Apart Glass Cover - 5

3 Raise the glass cover

assembly to 90 degrees

LED Cable

and disconnect the LED
cable by pushing the LED
toward the top of the
glass cover.

4 Remove the glass cover

from the scanner.

Glass Cover

Caution:

When the glass
cover is removed, do not
tilt the scanner on its
side, or the glass may
slip off.

Take Apart Glass Cover - 6

5 Grasp the glass by its

edges, and taking care
not to bend the glass
holder clips, slightly lift
the glass and rotate it
clockwise to release it
from the glass holder
clips.

Handle the glass by its
edges and place it in a
clean area.

Glass Holder
Clip

Glass Holder
Clip

Glass

Take Apart Optical Assembly - 7

Optical Assembly

Optical Assembly

Before you begin, remove
the following:

• Top cover with hinge

• Glass cover assembly

Caution

precautions in Bulletins/
Safety.

1 Make sure

: Review the ESD

• Scanner power is off

• Power cord is

connected

• SCSI cable is

disconnected

Take Apart Optical Assembly - 8

2 Set the SCSI ID switch to

7 (terminator off
position).

3 Switch on the scanner

power.

Wait for the startup
sequence to finish and
the lamp to turn off.
(For a description of the
normal startup
sequence, refer to the
Troubleshooting
chapter.)

SCSI ID Switch

4 Set the SCSI ID switch to

0 (terminator on
position).

Take Apart Optical Assembly - 9

Screw

Screw

Mirror

Screw

Screw

Screw

Screw

5 Set the SCSI ID switch

back to 7, then back to 0
and finally back to 7.

6 After about 10 seconds,

the lamp and mirror
will move. When the
mirror has reached the
position shown, turn off
the scanner.

7 Using a Phillips

screwdriver, remove

• Four screws and

lockwashers

• Two screws at rear

feet

Take Apart Optical Assembly - 10

8 Using a needlenose

pliers, carefully remove
connector J402 from the
logic board.

J402

Take Apart Optical Assembly - 11

9 Carefully lift the optical

assembly and remove

Longer Side

connector J301 from the
inverter board.

J301

CCD Unit

Caution:

scanner assembly by the
longer sides so that the

Handle the

printed circuit board
(CCD unit) on the
underside will not be
damaged.

Take Apart Optical Assembly - 12

10

Note:

Do not touch the

Mirror

Optical

Assembly

mirror or the printed
circuit board (CCD unit)
on the optical assembly.

Remove the optical
assembly from the
scanner.

CCD Unit

Take Apart LED Cable - 13

LED Cable

LED Cable

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

• Optical assembly

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart LED Cable - 14

1 Disconnect connector

Tie Wrap

Cable Clip

J309

J309 from the logic
board.

2 Remove the cable from

the cable clip and cut the
tie wrap.

Take Apart LED Cable - 15

3 Remove the tape and LED

cable from the bottom

LED Cable

Tape

case.

Take Apart Inverter Board - 16

Inverter Board

Inverter Board

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

• Optical assembly

Caution

precautions in Bulletins/
Safety.

.

: Review the ESD

Take Apart Inverter Board - 17

1 Disconnect connector

J402

J402 from the inverter
board.

Take Apart Inverter Board - 18

2 Using a pair of

needlenose pliers,
squeeze the card spacer
tabs and remove the
inverter board.

Card Spacer

Take Apart Drive Motor and Bracket - 19

Drive Motor and Bracket

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

• Optical assembly

Drive Motor

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Drive Motor and Bracket - 20

1 Remove connector J311

from the logic board.

2 Remove the cable from

the cable clip.

J311 Cable Clip

Take Apart Drive Motor and Bracket - 21

3 Remove the two screws

and washers.

4 Remove the drive motor

and bracket from the
bottom case.

Screw

Drive Motor

Screw

Take Apart Drive Motor and Bracket - 22

5 If necessary, lift off and

remove the gear from
the motor.

Spindle

Replacement Note:

Make
sure the gear is lined up
with the flat side of the
drive motor spindle
when reinstalling.

Drive Motor Gear

Take Apart Drive Motor and Bracket - 23

6 Carefully remove the

drive motor damper.

Drive Motor Bracket

7 Using a Phillips

screwdriver, remove
the two screws from the
drive motor bracket.

8 Remove the drive motor

from the bracket.

Drive Motor

Drive Motor
Damper

Take Apart Power Supply Board - 24

Power Supply

Power Supply Board

Board

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

• Optical assembly

• Inverter board

Caution

precautions in Bulletins/
Safety.

Note:

board before returning the
power supply to Apple.

: Review the ESD

Remove the inverter

Take Apart Power Supply Board - 25

1 Cut the tie wraps and

remove connector J307
from the logic board.

2 Remove the cables from

the cable clip.

J307Logic Board

Cable Clip

Take Apart Power Supply Board - 26

3 Slide the power switch

up and out of the bottom
case.

4 Remove the two screws

that hold the power
receptacle.

Screw

Power Switch

Screw

Power Receptacle

Take Apart Power Supply Board - 27

5 Remove the two

Screw

mounting screws.

6 Remove the ground

screw and lockwasher.

Power Supply

Board

7 Remove the power

supply board from the
scanner.

Ground Screw

Screw

Take Apart Logic Board - 28

Logic Board

Before you begin, remove
the following:

Logic Board

• Top cover

• Glass cover assembly

• Optical assembly

• Drive Motor

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Logic Board - 29

1 Disconnect the following

cables from the logic
board:

• J306

• J307

• J309

J306

J309

J307

J310

• J310

Take Apart Logic Board - 30

2 Using a Phillips

screwdriver, remove
the two mounting
screws from the SCSI
connector.

3 Using a hex driver,

remove the two mounting
screws from the
interface connector.

SCSI ConnectorInterface Connector

Take Apart Logic Board - 31

4 Remove the corner

screw from the logic

Logic Board

Screw

board.

Take Apart Logic Board - 32

5 Using needlenose pliers,

squeeze together the card

Card Spacer

Logic Board

spacers and lift off the
logic board.

Take Apart Logic Board - 33

6 Remove the shield plate

Logic Board

Shield Plate

from the logic board.

Take Apart Home Position Sensor (Photo-Interrupter) and Cable - 34

Home Position

Home Position Sensor
(Photo-Interrupter)

Cable

Sensor (Photo­Interrupter) and
Cable

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

• Optical assembly

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Home Position Sensor (Photo-Interrupter) and Cable - 35

1 Remove the cable from

connector J306 on the

Home Position Sensor

Cable

logic board and the
connector on the home
position sensor (photo­interrupter).

Logic Board

Take Apart Home Position Sensor (Photo-Interrupter) and Cable - 36

2 Press in the two latches

and lift up to remove the
home position sensor
from the bottom case.

Home Position

Sensor

Take Apart Feet - 37

Feet

Before you begin, remove

Rear Foot

Rear Foot

the following:

• Top cover

• Glass cover assembly

• Optical assembly

Front Foot

Front Foot

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Feet - 38

1 Slide the rear foot off of

the bottom case. Repeat
for other rear foot.

Rear Foot

Take Apart Feet - 39

2 Press down and unlatch

the front foot from the
bottom case. Repeat for
other front foot.

Bottom Case

Front Foot

Take Apart Automatic Document Feeder - 40

Automatic

Automatic Document Feeder

Document Feeder

No preliminary steps are
required before you begin
this procedure.

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Automatic Document Feeder - 41

1 Lift the document feeder

straight off the scanner.

Document Feeder

Take Apart Automatic Document Feeder - 42

Paper Separator

1 Lift up the top cover of

Document Feeder Top Cover

the document feeder.

Take Apart Automatic Document Feeder - 43

2 Do not pull on the

rubber piece on the
paper separator. It is
held in place by a metal
clip and will come off if
pulled.

Push down and press
forward on the paper
separator.

3 Remove the paper

separator.

Rubber Piece

Paper Separator

Take Apart Automatic Document Feeder - 44

Delivery Guide

and Deflector

Document Feeder

Delivery Guide and
Deflector

1 Turn the document

feeder over.

Take Apart Automatic Document Feeder - 45

2 Press in the two latches

and swing out the

Delivery Guide

Latch

and Deflector

Latch

delivery guide and
deflector.

Take Apart Automatic Document Feeder - 46

3 Remove the delivery

guide and deflector.

Delivery Guide

and Deflector

Take Apart Automatic Document Feeder - 47

4 Remove the delivery

guide from the deflector.

Delivery Guide

Deflector

Take Apart Automatic Document Feeder - 48

Replacement Note:

Tab

Before installing the
deflector back into the
document feeder, make

Tab

sure the two holes on the
delivery guide line up
with the two tabs on the
deflector.

Take Apart Automatic Document Feeder - 49

Replacement Note: Slip
the delivery guide back
under the plastic sheet

Plastic Sheet

Delivery Guide

on the document feeder
and snap the deflector in
place.

K

Service Source

Additional Procedures

Color OneScanner 600/27

Additional Procedures Unlocking the Scanner - 1

Unlocking the Scanner

Before you begin, remove
the top cover with hinge.

Lock

Additional Procedures Unlocking the Scanner - 2

Using a coin or a flat-blade

Lock

screwdriver, rotate the
lock to the unlocked position.

Unlocked

Position

Additional Procedures Changing the SCSI ID - 3

Changing the SCSI ID

No preliminary steps are
required before you begin
this procedure.

SCSI Switch

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Additional Procedures Changing the SCSI ID - 4

There are two sets of SCSI ID
numbers, depending if the
scanner has an external SCSI
terminator installed:

• The numbers on the left
are with SCSI
termination turned off.
Use these numbers if
there is an external SCSI
terminator.

• The numbers on the right
are with SCSI
termination turned on.
Use these numbers if
there is no external

SCSI Termination

Off

SCSI Termination

On

terminator.

Additional Procedures Changing the SCSI ID - 5

Turn the switch to the
desired number.

SCSI ID Switch

Additional Procedures Moving the Optical Assembly to Service Position - 6

Moving the
Optical Assembly

Optical Assembly

to Service Position

Before you begin, remove
the top cover with hinge.

1 Make sure

• Scanner power is off

• Power cord is
connected

• SCSI cable is
disconnected

Additional Procedures Moving the Optical Assembly to Service Position - 7

2 Set the SCSI ID switch to

7 (terminator off
position).

3 Switch on the scanner

power.

Wait for the startup
sequence to finish and
the lamp to turn off.
(For a description of the
normal startup
sequence, refer to the
Troubleshooting
chapter.)

SCSI ID Switch

4 Set the SCSI ID switch to

0 (terminator on
position).

Additional Procedures Moving the Optical Assembly to Service Position - 8

5 Set the SCSI ID switch

Mirror

Optical Assembly

back to 7, then back to 0
and finally back to 7.

6 The optical unit will now

move. When the mirror
has reached the position
where it is between the
set of four screws on the
bottom, turn off the
scanner.

K

Service Source

Exploded V ie w

Color OneScanner 600/27

Exploded View 1

Document Feeder,
Whole Unit

661-1119

Delivery Guide
Sheet, ADF
922-2048

Cable Sensor
922-1937

Photo-

Interrupter
922-1353

Paper Separator, ADF

922-2047

Deflector, ADF

922-2049

Cover, Top w/Hinge

922-1930

Cover, Glass

922-1932

Glass w/Scale
922-2024

Kit, Foot
076-0535

Gear, Motor (pkg. of 5)

922-2042

(pkg. of 5)

Motor, Drive
922-1938

Bracket, Motor

922-2046

Pad, Damper,
Motor
922-2045

Plate, Shield

922-1934

Logic Board

661-1083

Cable, LED
922-1935

Holder, Glass
(pkg. of 10)

922-1933

Optical

661-1084

Power Supply

661-1085

Assembly

Inverter
Board

922-1936