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Maintaining
the HiResolve Scanner |
Regular maintenance of
your Howtek HiResolve consists of periodic
cleaning, replacement of the lamps, drum drive
belt, and drum calibration strip when
necessary, and lubrication of the lead screw.
How often the scanner requires cleaning
depends on how much scanning you do, how
frequently you mount transparencies with oil,
how much excess oil remains on the drum, and
the cleanliness of the room in general.
WARNING! To prevent personal injury,
always turn the power switch off and unplug
the power cord from the outlet before cleaning
or performing any maintenance on the scanner.
The following procedures are covered in this
section:
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Cleaning the Scanner
Cabinet Exterior
- Turn the power switch off.
- Unplug the power cord from the outlet.
- Clean the exterior of the scanner with a
soft, lint-free damp cloth and wipe dry.
CAUTION: Do not use paper materials
such as facial tissue or paper towels. You may
use a mild cleaning solution if the cabinet
has become so soiled that a damp cloth does
not remove the stain. If you have questions
about a particular cleaning solution, contact
your dealer.
CAUTION: Do not use ammonia-based
cleaning products on the scanner. Do not
disassemble the scanner or lubricate any parts
other than those specifically indicated in
this section.
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Cleaning the Scanner
Cavity
For optimum performance, the scanning cavity
must be kept free of dust and oil.
Follow this procedure:
- Turn the power switch off.
- Unplug the power cord from the outlet.
- Clean the cavity with a soft, lint-free
cloth moistened with a non-volatile
degreasing solution.
You may use the recommended drum cleaner
included in the Drum and Accessories Kit that
comes with the scanner. You may also use an
aerosol can of compressed air to remove dust.
CAUTION: Do not spray cleaning solution
directly onto surfaces inside the scanner. Use
only a lightly moistened cloth. Do not use
paper materials such as facial tissue or paper
towels. If you have questions about a
particular cleaning solution, contact your
dealer.
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Cleaning the Analyzer
Lens
If you frequently scan oil mounted
transparencies, the analyzer lens may become
contaminated with oil. Oil or foreign matter
on the lens may cause distortions in your
scans.
To clean the analyzer lens follow this
procedure:
- Remove the drum from the scanner.
- In the OFF LINE state, press the RIGHT
ARROW on the control panel until the TESTS
function is displayed.
- Press ENTER.
- Press the RIGHT ARROW until the CARRIAGE
option is displayed.
- Press the DOWN ARROW until the CARRIAGE
STEP option is displayed.
- Press the RIGHT ARROW to move the
carriage far enough to the right to freely
access the Fiber Optic Reflectance
Illuminator (FORI). The FORI is attached to
the analyzer lens.
- Remove the FORI:
- Insert the long end of the Allen
wrench (located in the front of this user
guide) into the small hole on the left
side of the FORI and turn counterclockwise
one revolution:
- Gently pull the FORI assembly off and
place it into the scanner cavity.
- Using only lens tissue and lens cleaner,
wipe the surface of the lens. Use a can of
clean compressed air to blow any remaining
particles off the lens.
- Reinstall the FORI:
- Place the FORI over the lens with the
attached cable slightly to the left of top
center.
- Tighten the Allen screw by turning it
clockwise one revolution. Do not
over-tighten.
- Return the scanner to the READY TO SCAN
state.
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Replacing the Lamps
The scanner includes two identical tungsten
halogen reflector lamps, one lamp for the
reflective mode and one for the transparency
mode. Each lamp is mounted in a mechanical
assembly that ensures proper alignment when
installed.
WARNING! The lamps are hot during
scanning. Wait at least five minutes after the
lamps have been turned off before replacing
them.
To replace a lamp assembly, follow these
steps:
- Turn the power switch off.
- Unplug the power cord from the outlet.
- Open the lamp access door on the top of
the scanner.
- Locate the desired lamp assembly.
- Gently unplug the lamp connector from
behind the bulb.
Note: The reflective and transparency
lamp assemblies are interchangeable; the
connectors, however, are not.
- Pull up on the two locking pins that
hold the lamp assembly in place:
- Lift the lamp mount with bulb up and out
of the scanner cavity.
- Grasp the new lamp assembly by the base
plate
(DO NOT TOUCH THE LAMP WITH YOUR FINGERS)
and place into position. When the assembly
is in position, the alignment pins on the
bottom of the base plate will click into
place.
- Press down on the two locking pins. Make
sure the lamp assembly is securely in place.
- Connect the lamp assembly to the proper
electrical connector and close the drum
access door.
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Replacing the Drum
Drive Belt
The drum drive belt connects the motor with
the headstock spindle. The belt should be
replaced if it appears chipped or cracked or
if you find pieces of rubber on the bottom of
the scanner cavity.
To replace a belt, follow this procedure:
- Remove the drum from the scanner.
- Locate the drive belt on the left side
of the carriage, attached to the head stock.
- Pull the old belt off with your fingers.
- Put the new belt on. No tools or tension
adjustments are required.
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Replacing the
Drum Calibration Strip
The calibration strip should be replaced if it
becomes scratched or visibly damaged. A
damaged calibration strip can result in
horizontal light or dark streaks across the
scanned image. If the strip becomes dirty, it
can be cleaned with drum cleaner.
CAUTION: The drum surface is fragile;
be careful not to scratch it. Do not use hard
instruments to remove the calibration strip or
adhesive. Do not use any unauthorized cleaning
materials.
To replace the calibration strip, follow this
procedure:
- Remove the drum from the scanner.
- Peel off the old strip.
- Remove any adhesive residue with drum
cleaner.
- Clean the entire area where the new
strip will be mounted. Let the drum dry
thoroughly. Make sure your hands are clean
and dry before proceeding.
- Mount the drum into the scanner.
- Peel the adhesive backing off the new
strip.
- Roughly align the strip between the two
red areas.
- Place the strip on the drum such that
the edge of the strip is against the axial
scribe line.
- Roll the strip onto the drum. Smooth out
the strip with your fingers, making sure to
remove any bubbles or wrinkles.
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Lubricating the Lead screw
The lead screw drives the drum carriage and is
located beneath it. Normal use of the scanner
(approximately 30 scans per day) should not
require additional lead screw lubrication.
However, differences in environmental
conditions may require cleaning of the
scanner, including the lead screw. This
requires re-application of lubricant.
The recommended lubricant is Kluber Isoflex
Topaz NCA-52.
To lubricate the lead screw, follow these
steps:
- Power on the scanner.
- Open the drum access door and remove the
drum.
- In the OFF LINE state, press RIGHT ARROW
on the control panel until the TESTS
function is displayed.
- Press ENTER.
- Press RIGHT ARROW until the CARRIAGE
option is displayed.
- Press DOWN ARROW until the CARRIAGE STEP
option is displayed.
- Press RIGHT ARROW to move the carriage
completely to the right until it stops.
- Using a syringe, apply a small amount of
lubricant to several sections of the screw.
- Operate the scanner in the normal manner
and the lubricant will be distributed
evenly.
- Clean excess lubricant from the screw.
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