Apple Scanner Products Service Manual
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Apple Scanners
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Specifications
Apple Scanners
Specifications Characteristics - 1
Characteristics
Scanner T ype
Maximum Document Size
Speed
Grayscale
Dropout Color
Interface
Flatbed
8.5 by 14 in.
20.4 sec. for a 300-dpi scan measuring 8.5 by 11 in.
16 levels (4 bits per pixel)
Green
SCSI
Specifications Settings - 2
Settings
Contrast
Brightness
Threshold Values
Gray-Map
Scan Selections
Halftone Techniques
Up to 8 (specified by user)
Up to 16 (specified by user)
Up to 16 (specified by user)
More light detail, normal detail, more dark detail
Line art, halftone, grayscale
Spiral, bayer, 2 by 2, line, user-definable patterns, and adaptive
dithering to grayscale data that has been scanned.
Specifications Electrical - 3
Electrical
Line V oltage
Frequency
120 VAC ±10%
58–62 Hz
Specifications Physical - 4
Physical
Size
Weight
Height: 4.4 in. (11.2 cm)
Width: 13.6 in. (34.5 cm)
Depth: 21.8 in. (55.4 cm)
20 lb. (9.1 kg)
Specifications Environmental - 5
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
32–104°F (0-40°C)
–40 to 149°F (–40 to 65°C)
5–95% noncondensing
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Troubleshooting
Apple Scanners
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 /Miscellaneous - 2
Symptom Charts
Miscellaneous
Power lamp not on; machine dead
1 Plug in power cord.
2 Close lamp cover and turn button clockwise.
3 Check for correct setting of voltage selector (on universal
models).
4 Check interlock switch with multimeter; replace if switch is
not opening and closing.
5 Check fuses FU1, FU2, and FU3 on power supply board.
6 Check fuse 1 on logic board (4-bit only).
7 Replace logic board.
8 Replace power supply.
9 Replace transformer.
Troubleshooting Symptom Charts /Miscellaneous - 3
Optical assembly does not move
Optical assembly moves once, then does not move
System does not boot
or locks up during
transfer of data over
SCSI bus
1 Check and clean or replace belt.
2 Check belt tension. Belt should be tight with no slack.
3 Check for damage to gears or buildup of foreign material;
clean or replace gears.
Check limit switch for continuity.
Perform “Logic Board Modification” (see Additional
Procedures).
Troubleshooting Symptom Charts /Miscellaneous - 4
AppleScan program
crashes during
middle of scanning
operation, or
computer hangs
Fluorescent lamp won’t light or is dim
1 Verify version of AppleScan.
2 Replace power supply board.
3 Replace logic board.
1 Check lamp holder connector.
2 Check that label of fluorescent lamp faces down (into lamp
holder).
3 Replace lamp.
4 Check flexible cable.
5 Replace inverter (or optical assembly).
Troubleshooting Symptom Charts /Miscellaneous - 5
Scan command not executed
Image not clean; dark or light spots
Scanning performed,
but image doesn’t
reach host computer
1 Check external cable connections.
2 Reset SCSI select switch on scanner to an unused device
number (factory preset at 2). Do not use 7 or 8.
3 Check that SCSI cable terminates correctly.
4 Check fuse on logic board.
5 Replace logic board.
1 Clean glass with water and soft, lint-free cloth.
2 Adjust contrast or threshold settings on application.
3 Replace lamp.
4 Replace logic board.
5 Replace optical assembly.
1 Check interface connector.
2 Replace optical assembly.
3 Check fuse on logic board.
4 Replace logic board.
Troubleshooting Symptom Charts /Miscellaneous - 6
Incorrect image on host screen
1 Clean glass with water and soft, lint-free cloth.
2 Replace optical assembly.
Troubleshooting Symptom Charts /Apple OneScanner for Windows - 7
Apple OneScanner for Windows
Scanner does not operate in Windows environment
1 Check connections of SCSI cable.
2 Check that SCSI terminator is installed.
3 Replace AT-to-SCSI Host Adapter card.
4 If you determine that there is a software problem, contact
the Apple Assistance Center.
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T ak e Apart
Apple Scanners
Take Apart Top Cover - 1
Top Cover
Top Cover
No preliminary steps are
required before you begin
this procedure.
1 Press the clips and lift
the top cover.
Take Apart Glass Cover Assembly - 2
Glass Cover
Glass Cover
Assembly
Assembly
Before you begin, remove
the top cover.
Caution:
precautions in Bulletins/
Safety.
1 Loosen the three captive
Review the ESD
screws.
Take Apart Glass Cover Assembly - 3
2 While lifting the glass
cover assembly from
Glass Cover Assembly
the rear, use a flatblade screwdriver to
press in and release the
two retaining clips.
Retaining Clips
(both sides)
Take Apart Glass Cover Assembly - 4
Start Scan Board
Scan Switch Cable
Caution:
Make sure that
you don’t damage the
protruding components
on the start scan board
while performing this
procedure.
3 Raise the glass cover
assembly to 90°,
disconnect the scan
switch cable from the
start scan board, and
remove the glass cover
assembly.
Take Apart Glass Cover Assembly - 5
4
Replacement Note:
When you replace a
damaged glass cover
assembly, remove the
start scan board and
install the board on the
Start Scan Board
new glass cover
assembly.
Take Apart Optical Assembly - 6
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 - 7
1 While pulling the wire
Retaining Screw
handle, loosen the
retaining screw and
Lamp
Assembly
remove the lamp
assembly.
Replacement Note:
Make
sure the left side of the
lamp assembly engages
the left retaining
flanges properly.
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