Samsung SCX-4300-XAA - Manual (Page 51)

Troubleshooting
9.9
Copying problems
Horizontal stripes If horizontally aligned black streaks or smears
appear:
• The toner cartridge may be installed improperly.
Remove the toner cartridge and reinsert it.
• The toner cartridge may be defective. Remove the
toner cartridge and install a new one. See
page 8.4.
• If the problem persists, the machine may require
repair. Contact a service representative.
Curl If the printed paper is curled or paper does not feed
into the machine:
• Turn over the stack of paper in the tray. Also try
rotating the paper 180° in the tray.
• Try printing to the rear cover.
Condition Suggested solutions
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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, use Darkness to
lighten the background of your copies.
• If no defects are on the original, clean the scan
unit. See page 8.2.
Copy image is
skewed.
• Ensure that the original is face down on the
document glass.
• Check that the paper is loaded correctly.
Blank copies print
out.
Ensure that the original is face down on the
document glass.
Image rubs off the
copy easily.
• Replace the paper in the paper input 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
paper input tray. Replace the paper in the paper
input tray with a fresh supply. Check/adjust the
paper guides, if necessary.
• Ensure that the paper is the proper paper weight
80 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.
Scanning problems
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 document cover may be left open while
copies are being made.
Condition Suggested solutions
Condition Suggested solutions
The scanner does not
work.
• Make sure that you place the document to be
scanned face down on the document 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, for example, LPT1.
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.