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63 _Troubleshooting
Copying problems Scanning problems
CONDITION SUGGESTED SOLUTIONS
Copies are too light
or too dark.
Use Darkness to darken or lighten the
background of the copies.
Smears, lines,
marks, or spots
appears on copies.
• If defects are on the original, press
Darkness to lighten the background of your
copies.
• If no defects are on the original, clean the
scan unit. (See "Cleaning the scan unit" on
page 48.)
Copy image is
skewed.
• Ensure that the original is face down on the
scanner glass.
• Check that the copy paper is loaded
correctly.
Blank copies print
out.
Ensure that the original is face down on the
scanner glass.
Image rubs off the
copy easily.
• Replace the paper in the tray with paper
from a new package.
• In high humidity areas, do not leave paper
in the machine for extended periods of
time.
Frequent copy paper
jams occur.
• Fan the stack of paper, then turn it over in
the tray. Replace the paper in the tray with
a fresh supply. Check/adjust the paper
guides, if necessary.
• Ensure that the paper is the proper paper
weight. 75 g/m
2
(20 lb bond) paper is
recommended.
• Check for copy paper or pieces of copy
paper remaining in the machine after a
paper jam has been cleared.
Toner cartridge
produces fewer
copies than expected
before running out of
toner.
• Your originals may contain pictures, solids,
or heavy lines. For example, your originals
may be forms, newsletters, books, or other
documents that use more toner.
• The machine may be turned on and off
frequently.
• The scanner lid may be left open while
copies are being made.
CONDITION SUGGESTED SOLUTIONS
The scanner does
not work.
• Make sure that you place the original to be
scanned face down on the scanner glass.
• There may not be enough available memory
to hold the document you want to scan. Try
the Prescan function to see if that works. Try
lowering the scan resolution rate.
• Check that the USB cable is connected
properly.
• Make sure that the USB cable is not
defective. Switch the cable with a known
good cable. If necessary, replace the cable.
• Check that the scanner is configured
correctly. Check scan setting in the
SmarThru Configuration or the application
you want to use to make certain that the
scanner job is being sent to the correct port.
The unit scans very
slowly.
• Check if the machine is printing received
data. If so, scan the document after the
received data has been printed.
• Graphics are scanned more slowly than text.
• Communication speed slows in scan mode
because of the large amount of memory
required to analyze and reproduce the
scanned image. Set your computer to the
ECP printer mode through BIOS setting. It
will help to increase the speed. For details
about how to set BIOS, refer to your
computer user’s guide.
Message appears on
your computer
screen:
• “Device can't be
set to the H/W
mode you want.”
• “Port is being used
by another
program.”
• “Port is Disabled.
• “Scanner is busy
receiving or
printing data.
When the current
job is completed,
try again.”
• “Invalid handle.”
• “Scanning has
failed.”
• There may be a copying or printing job in
progress. When that job is complete, try your
job again.
• The Selected port is currently being used.
Restart your computer and try again.
• The printer cable may be improperly
connected or the power may be off.
• The scanner driver is not installed or the
operating environment is not set up properly.
• Ensure that the machine is properly
connected and the power is on, Then restart
your computer.
• The USB cable may be improperly
connected or the power may be off.