Apple Color Onescanner.B Service Manual

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Apple Color OneScanner/B

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Specifications

Color OneScanner/B

Specifications Characteristics - 1

Characteristics

Scanner T ype

Maximum Document Size

Speed

Grayscale

Dropout Color

Interface

Flatbed

8.5 by 14 in.

13 ms/line at 300 dpi

256 levels (8 bits per pixel)

White

SCSI

Specifications Electrical - 2

Electrical

Line Voltage

Frequency

120 VAC ±10% (US and Canada)
100/120/200/220/240 VAC ± 10% (Universal)

58–62 Hz (US and Canada)
48–62 Hz (Universal)

Specifications Physical - 3

Physical

Size

Weight

Height: 4.3 in. (110 mm)
Width: 13.4 in. (340 mm)
Depth: 21.5 in. (545 mm)

23 lb. (10.45 kg)

Specifications Environmental - 4

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

50–104°F (10–40°C)

–40 to 117°F (–40 to 47°C)

20–95% noncondensing

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Troubleshooting

Color OneScanner/B

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.)

If you are not sure what the problem is, or if the Symptom Charts
do not resolve the problem, refer to the Flowchart for the product
family.

For additional assistance, contact Apple Technical Support.

Troubleshooting Symptom Charts /LED Error Messages - 2

Symptom Charts

LED Error Messages

LED blinks once Replace logic board.

LED blinks twice 1 Clean glass cover assembly.

2 Check lamp holder connector.
3 Check that label of fluorescent lamp faces down into lamp

holder.
4 Replace lamp.
5 Replace optical assembly.

Troubleshooting Symptom Charts /LED Error Messages - 3

LED blinks three
times

Power-on self test
does not find error
(LED does not blink);
scanner is not
capturing image
correctly

1 Check motor carrier assembly.
2 Check drive belt assembly.
3 Check gears and pulleys.
4 Check limit switch assembly.
5 Check home position switch assembly.
6 Check carrier shaft; it should not be bent.

Replace optical assembly.

Troubleshooting Symptom Charts /Miscellaneous - 4

Miscellaneous

Power lamp not on;
machine dead

Optical assembly does
not move

1 Plug in power cord.
2 Close lamp cover and turn button clockwise.
3 Check interlock switch with multimeter. Replace switch if it

is not opening and closing.
4 Check fuse FU1 on power supply board.
5 Replace logic board.
6 Replace power supply.

1 Check SCSI connection.
2 Check SCSI ID.
3 Check and clean or replace belt.
4 Check belt tension. Belt should be tight with no slack.
5 Check for damage to gears or buildup of foreign material.

Clean or replace gears.

Troubleshooting Symptom Charts/Miscellaneous - 5

Optical assembly moves
once and then does not
move

Scanning program
crashes during middle of
scanning operation, or
computer hangs

1 Check limit switch for continuity.
2 Check drive belt.
3 Check drive belt pulleys.
4 Check carrier motor.

1 Verify version of scanner application software.
2 Verify that scanner driver is present.
3 Verify version of scanner driver.
4 Check SCSI connection.
5 Verify that host computer has enough memory.
6 Verify that system software is version 7.0 or above.
7 Verify SCSI ID of scanner.
8 Verify scanner SCSI termination.
9 Turn on scanner and reboot computer.
10 Replace logic board.

Troubleshooting Symptom Charts/Miscellaneous - 6

Fluorescent lamp won’t
light or is dim

Scan command does not
execute

1 Check lamp holder connector.
2 Check that label of fluorescent lamp faces down into lamp

holder.
3 Replace lamp.
4 Replace optical assembly.
5 Replace logic board.

1 Check external cable connections.
2 Reset SCSI select switch on scanner to unused device

number. Scanner is factory-preset at 2. Do not use 7, 8,

9, or 0.
3 Check that SCSI cable terminates correctly.
4 Replace logic board.

Troubleshooting Symptom Charts /Miscellaneous - 7

Image not clean; dark
or light spots

Scanning performed,
but image doesn’t
reach host computer

Incorrect image on
host screen

1 Clean glass with water and soft, lint-free cloth.
2 Adjust contrast or threshold settings on application.
3 Replace lamp.
4 Replace optical assembly.
5 Replace logic board.

1 Check interface connector.
2 Replace optical assembly.
3 Check fuse FU1 on logic board.
4 Replace logic board.

1 Clean glass with water and soft, lint-free cloth.
2 Replace optical assembly.

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T ak e Apart

Color OneScanner/B

Take Apart Top Cover - 1

Top Cover

Top Cover

No preliminary steps are
required before you begin
this procedure.

Take Apart Top Cover - 2

Press the clips and lift the
top cover.

Top Cover

Take Apart Glass Cover Assembly - 3

Glass Cover

Glass Cover

Assembly

Assembly

Before you begin, remove
the top cover.

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Glass Cover Assembly - 4

1 Loosen the three captive

screws.

Glass Cover

Assembly

Take Apart Glass Cover Assembly - 5

2 Lift the glass cover

Glass Cover

Assembly

assembly from the rear,
and at the same time
press in and release the
two retaining clips.

Retaining Clips
(both sides)

Take Apart Glass Cover Assembly - 6

Start Scan

Board

Scan Switch Cable

Glass Cover
Assembly

Caution:

When
removing the glass cover
assembly, make sure you
don’t damage the start
scan board.

3 Raise the glass cover

assembly to 90° and
disconnect the scan
switch cable from the
start scan board.

4 Remove the glass cover

assembly.

Take Apart Glass Cover Assembly - 7

5

Replacement Note:

Before returning a
damaged glass cover
assembly, remove the
start scan board. Install
the start scan board on
the new glass cover
assembly.

Start Scan

Board

Take Apart Scan Start Board - 8

Scan Start Board

Scan Start Board

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Scan Start Board - 9

1 Remove the two screws

and remove the scan
start board.

2 Remove the LED lenses.

Scan Start

Board

LED Lenses

Take Apart Lid Hinge Assembly - 10

Lid Hinge Assembly

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

Lid Hinge

Assembly

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Lid Hinge Assembly - 11

Glass Cover Assembly

Lid Fastener

Lid Hinge

1 Turn over the glass

cover assembly.

2 Twist and remove the lid

fastener.

3 Repeat for the fastener

on the other side.

Take Apart Lid Hinge Assembly - 12

4 Lift up and remove the

lid hinge.

5 Remove the lid hinge

rings.

Lid

Hinge

Lid Hinge Ring

Lid Hinge Ring

Take Apart Optical Assembly - 13

Optical Assembly

Before you begin, remove

Optical Assembly

the following:

• Top cover

• Glass cover assembly

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Optical Assembly - 14

1 Using a small flat-blade

Screwdriver

Lamp

screwdriver, remove
the lamp assembly

Take Apart Optical Assembly - 15

2 Remove the two

Front Plate

retaining screws and
lift out the front plate.

Replacement Note:

Place the screws in the
front plate before
reinstalling the plate in
the scanner. Carefully
lower the plate down and
tighten the screws.

Take Apart Optical Assembly - 16

3 Push the optical

Optical Assembly

assembly to the center
over the cutout in the
left guide rail.

Left Guide Rail

Take Apart Optical Assembly - 17

4 Remove the three

retaining screws, and
the ground clip.

Limit Switch

Assembly

5 Slide the limit switch

assembly to the side.

Ground Clip

Take Apart Optical Assembly - 18

6 Loosen the tension lock

screw.

Pulley Lever

Tension Lock Screw

7 Slide the pulley lever

forward to relieve belt
tension and remove the
belt from the rear
pulley gear.

8 Remove the belt from the

front pulley gear.

Take Apart Optical Assembly - 19

9 Remove the two

Front Retaining Bracket

retaining screws and the
carrier shaft front
retaining bracket.

Take Apart Optical Assembly - 20

Flex Cable

Optical Assembly

Left Guide
Rail

Carrier Shaft

Caution:

Do not lift the
optical assembly too
high, or you may damage
the flex cable.

10 Lift the shaft until it

clears both support
brackets and pull the
shaft slightly to the
right.

11 Free the left side of the

optical assembly from
the left guide rail.

Take Apart Optical Assembly - 21

12 Using a small flat-blade

Screwdriver

screwdriver, unlatch
the optical board cover.

13 Repeat for other side

and remove the optical
board cover.

Optical Board Cover

Take Apart Optical Assembly - 22

14 Using a small flat-blade

screwdriver, disconnect
the flex cable and

Flex Cable

remove the cable from
the optical assembly.

Optical Assembly

Replacement Note:

Make
sure the blue stripe on
the flex cable is facing
up.

Take Apart Optical Assembly - 23

15 Lift the optical

Carrier Stopper Sleeve

assembly from the
scanner.

Carrier Shaft

Optical Assembly

16 Slide the carrier shaft

out of the optical
assembly.

Note:

Keep the carrier
stopper sleeve with the
shaft.

Take Apart Optical Assembly - 24

17 Using a small

Retaining Clip

screwdriver, pry off
the retaining clip and
remove the belt from the
optical assembly.

Take Apart Carrier Motor - 25

Carrier Motor

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

• Optical assembly

Carrier Motor

Caution:

precautions in Bulletins/
Safety.

.

Review the ESD

Take Apart Carrier Motor - 26

1 Remove the logic board

cover.

Logic Board Cover

Take Apart Carrier Motor - 27

2 Disconnect the cable

connector from the logic
board.

Logic Board

Take Apart Carrier Motor - 28

3 Unhook the cables from

the cable retainer.

Cable

Retainer

Take Apart Carrier Motor - 29

4 Remove the five

mounting screws and
lift out the motor plate.

Motor Plate

Take Apart Carrier Motor - 30

Carrier Motor

E-Clip

Front Gear Pulley

5 Remove the E-clip and

washer.

6 Slide the front gear

pulley up and off the
pulley spindle.

7 Remove the three motor

mounting screws and the
carrier motor.

Replacement Note:

Install the motor onto
the carrier assembly as
shown.

Take Apart Logic Board - 31

Logic Board

No preliminary steps are
required before you begin
this procedure.

Logic Board

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Logic Board - 32

1 Loosen the three captive

Bottom Cover

screws and remove the
bottom cover.

Take Apart Logic Board - 33

Optical

Cable

Caution:

Do not let the
optical cable slide back
into the scanner. Tape it
to the chassis until you
can reinstall the logic
board.

2 Disconnect the five

cables from the logic
board.

Take Apart Logic Board - 34

3 Remove the four

mounting screws, and
remove the logic board.

Caution:

the metal case from the
logic board. You could
cause electrostatic
damage to the circuitry.

Do not remove

Take Apart Power Supply Board - 35

Power Supply Board

Power Supply Board

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

• Optical assembly

• Logic board

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Power Supply Board - 36

1 Remove the retaining

screw and slide the AC

AC Inlet Cover

inlet cover to the right
and out of the scanner.

AC Switch

Cover

2 Remove the AC switch

cover.

Take Apart Power Supply Board - 37

3 Remove the three

mounting screws and the

Left Guide Rail

left guide rail.

Take Apart Power Supply Board - 38

4 Disconnect cables from

Power Supply Board

Ground Wire

the following power
supply connectors:

• CN1

• CN2

5 Remove the retaining

Ground Strap

screw and detach the
power supply board

CN2

ground wire and strap.

CN1

Replacement Note:

Make
sure the ground strap
from the logic board is
seated properly under
the power supply.

Take Apart Power Supply Board - 39

6 Remove the screws.

7 Push in and lift out the

power supply board.

Power Supply Board

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Additional Procedures

Color OneScanner/B

Additional Procedures Power Supply Fuse - 1

Power Supply Fuse

Before you begin, remove

Fuse

the following:

• Top cover

• Glass cover assembly

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Additional Procedures Power Supply Fuse - 2

1 To access fuse FU1,

push in the tabs and
remove the AC switch
cover.

AC Switch Cover

Additional Procedures Power Supply Fuse - 3

2 Remove fuse FU1.

FU1

(2A)

Replacement Caution:

Use a replacement fuse
with the correct rating.
FU1 is a fire-rated
ceramic fuse.

Additional Procedures Lamp Replacement - 4

Lamp Replacement

Optical
Assembly

Lamp

Before you begin, remove
the following:

• Top cover

• Glass cover assembly

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Additional Procedures Lamp Replacement - 5

Carefully push the lamp out

Screwdriver

Lamp

of the optical assembly.

Additional Procedures Lamp Replacement - 6

Replacement Note:

Retaining Flange

When replacing the lamp
and lamp assembly,

Lamp

make sure

• The lamp is free of

fingerprints. Use a
soft cloth to wipe the

Lamp Assembly

lamp prior to
inserting it into the
lamp assembly.

• The printing on the

lamp faces the lamp
assembly.

• The lamp assembly

seats securely in the
left retaining flanges.

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Exploded V ie w

Color OneScanner/B

Exploded View 1

Top Coverw/ Glass

Scan Start Board

076-0592

Top Cover
922-1189

Shaft, Carrier

699-0514

Front Plate

Assembly

922-0331

922-1187

Lid Hinge
Assembly
922-1191

Cable Optical
922-0021

Optical Assy
661-0187

Lamp Holder
922-1198

Transformer

Assembly

915-0038 110V

915-0039 100/240V

Interior Cover

949-0226

Drive Belt
Assembly
076-0323

Carrier

Motor

922-1193

Assembly,

Carrier Motor

922-0017

Cover, Voltage Select

922-0402

Plate

AC Inlet Cover
949-0214

Shield Plate (L)
922-1196

*Fuses
See Parts List

Power Supply
661-0186

Bottom Cover
Assembly
922-1188

Logic Board 24Bit
661-0185 (B)

Logic Board Cover
922-1199 (B)