11-7
Troubleshooting > General Troubles
There are black dots
in the white parts of
the image.
Is the original holder or the glass
platen dirty?
Clean the original holder or the glass
platen.
Printouts are fuzzy.
Is the device used in an environment
with high humidity or where the
temperature or humidity changes
suddenly?
Use in an environment that has
suitable humidity.
ʊ
If the problem occurs frequently, turn
on the Cassette Heater switch.
ʊ
Run [Drum Refresh].
The image is
misaligned.
Are the originals placed correctly?
When placing originals on the platen,
align them with the original size
indicator plates.
When placing originals in the
document processor, align the
original width guides securely before
placing the originals.
Is the paper loaded correctly?
Check the position of the paper width
guides.
ʊ
Perform centerline adjustment. For
information about this adjustment,
contact your Service Representative.
Printouts have
vertical lines.
Is the slit glass dirty?
Clean the slit glass.
Dirt on the top edge
or back of the paper.
Is the interior of the machine dirty?
Open the right cover. If the machine
interior is dirty with toner, clean it
using soft, dry, lint-free cloth.
ʊ
There is a regular
repeating pattern of
faintness, blurring, or
whiteness in the
image.
Are the developing unit and drum unit
installed correctly?
Remove and correctly re-install the
developing unit and drum unit.
ʊ
ʊ
Open right cover and then close it
again.
ʊ
ʊ
Run [Drum Refresh].
ʊ
If the problem occurs frequently, turn
on the Cassette Heater switch.
Symptom
Checkpoints
Corrective Actions
Reference
Page
Summary of Contents for d-COPIA 255MF
Page 1: ...Code 595201en OPERATION GUIDE d COPIA255MF ...
Page 79: ...2 2 Installing and Setting up the Machine Uninstalling Applications 2 55 ...
Page 427: ...10 3 Maintenance Regular Maintenance 2 Clean the slit glass and the reading guide ...
Page 473: ...11 38 Troubleshooting Clearing a Staple Jam 5 Close the staple cover ...
Page 511: ......