Oki MPS420b MPS420b User Guide (English) - Page 65

Problems

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SYMPTOM Bold characters and dark lines are smeared. Print is darker than usual. Pages curl excessively. PROBLEM Toner is low. Darkness setting is too high. Printing on wrong side of paper. Moisture in paper. Improper storage. High humidity. SOLUTION Install new toner cartridge. Change darkness setting. Turn paper over in tray. (Note arrow on paper package). Install paper print side down in tray. Avoid storing paper in areas of excessive temperature and humidity. Store paper in protective wrapping. Recommended operating humidity: 20-80%. PAPER FEED PROBLEMS SYMPTOM Paper Jams occur frequently. Multiple sheets of paper are fed at the same time. PROBLEM SOLUTION The printer is tilted. Paper is too thick or too thin. Paper is moist, folded, creased or warped. Paper is not aligned. Only one sheet of paper is loaded in the Paper tray or Multi Purpose tray. Sheets of paper is added to the existing paper stock in the Paper tray or Multi Purpose tray. Postcards, envelopes, label sheets or transparencies are loaded in the Paper tray. Place the paper on a stable and flat surface. Use paper suitable for the printer. Avoid storing paper in areas of excessive temperature and humidity. Store paper in protective wrapping Align the paper edges to the paper guides. Load several sheets of paper. Remove existing sheets of paper from the tray and add the new sheets to them, ensuring alignment and then load the tray. You cannot print using the Paper tray. Load postcards, envelopes, label sheets or transparencies in the Multi Purpose tray. Postcards or envelopes are placed in the wrong orientation. Check and load in the correct orientation. Troubleshooting > 65

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Troubleshooting > 65
P
APER
FEED
PROBLEMS
Bold characters
and dark lines are
smeared.
Toner is low.
Install new toner cartridge.
Print is darker
than usual.
Darkness setting is too high.
Change darkness setting.
Pages curl
excessively.
Printing on wrong side of
paper.
Turn paper over in tray. (Note arrow
on paper package). Install paper
print side down in tray.
Moisture in paper. Improper
storage.
Avoid storing paper in areas of
excessive temperature and humidity.
Store paper in protective wrapping.
High humidity.
Recommended operating humidity:
20-80%.
SYMPTOM
PROBLEM
SOLUTION
Paper Jams occur
frequently. Multiple
sheets of paper are fed at
the same time.
The printer is tilted.
Place the paper on a
stable and flat surface.
Paper is too thick or too
thin. Paper is moist,
folded, creased or
warped.
Use paper suitable for the
printer. Avoid storing
paper in areas of
excessive temperature
and humidity. Store
paper in protective
wrapping
Paper is not aligned.
Align the paper edges to
the paper guides.
Only one sheet of paper is
loaded in the Paper tray
or Multi Purpose tray.
Load several sheets of
paper.
Sheets of paper is added
to the existing paper
stock in the Paper tray or
Multi Purpose tray.
Remove existing sheets
of paper from the tray
and add the new sheets
to them, ensuring
alignment and then load
the tray.
Postcards, envelopes,
label sheets or
transparencies are loaded
in the Paper tray.
Postcards or envelopes
are placed in the wrong
orientation.
You cannot print using
the Paper tray. Load
postcards, envelopes,
label sheets or
transparencies in the
Multi Purpose tray.
Check and load in the
correct orientation.
SYMPTOM
PROBLEM
SOLUTION