T-2 3

6. IMAGE QUALITY PROBLEMS

6-1. Troubleshooting Image Quality Problems

• This chapter is divided into two parts: “Initial Checks” and “Troubleshooting Specific
Image Quality Problems.”
• If an image quality problem occurs, first go through the “Initial Checks” and, if the cause
is still not identified, continue to “Troubleshooting Specific Image Quality Problems.”

6-2. Initial Checks

• Determine if the failure is attributable to a basic cause or causes.
Section Step Check Result Action
Installation
site
1 The installation site complies with the
requirements.
NO Change the
installation site.
Media 2 The media meets product specifica-
tions.
NO Instruct the user
to use recom-
mended media
that meets prod-
uct specifications.
3 The paper is damp. YES Change the
paper.
Instruct the user
on the correct
methods for stor-
ing media.
Original
document
4 The document is not flat. YES Correct the docu-
ment.
5 Copies of a faint document (written in
light pencil, etc.) are being made.
YES Instruct the user
to use a docu-
ment with an
appropriate image
density.
6 Copies of a highly transparent docu-
ment (OHP transparencies, etc.) are
being made.
YES Instruct the user
on how to copy
transparent docu-
ments.
7 The Original Glass is dirty or
scratched.
YES Clean or replace
the Original
Glass.
PM parts 8 PM parts relating to image formation
have reached the end of their service
life.
YES Clean or replace
the PM parts.
Adjust-
ments
9 There are adjustments that can
improve image quality problems by
being performed again.
YES Perform the
adjustment again.