Field Service Ver. 1.0 Apr. 2005 17. Image quality problem
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Troubleshooting
17. Image quality problem
17.1 How to identify problematic part
• In this chapter, troubleshooting is divided into “initial checks” and “troubleshooting proce-
dures classified by image failures.”
• If any image failure has occurred, first make the initial checks, then proceed to the corre-
sponding image failure troubleshooting procedure.
17.1.1 Initial Check Items
• 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 specified in
“PRECAUTIONS FOR INSTALLA-
TION” contained in GENERAL.
NO • Change the installation site.
Paper
2
Paper meets product specifica-
tions.
NO
• Change paper for one that meets
specifications.
• Instruct user to use paper that
meets specifications and is rec-
ommended.
3 Paper is damp. YES
• Change paper for one that is dry.
Then, instruct user to use paper
that meets specifications and in
how to store paper.
Original
4 Original is placed correctly. NO
• Reposition original.
• Instruct user in how to place orig-
inal correctly.
5 Original is written in light pencil. YES
• Change original.
• Instruct user to use original with
appropriate image density.
6
Original is transparent (OHP film,
etc.).
YES
• Change original.
• Instruct user to use originals that
meet specifications.
7 Original Glass is dirty. YES • Clean Original Glass.
8 Original Glass is scratchy. YES • Change Original Glass.
PM parts 9
The PM parts relating to image for-
mation have reached the end of
cleaning/replacement cycles.
YES
• Clean PM parts.
• Change PM parts.
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