Image Quality Problem; How To Identify Problematic Part - Konica Minolta Bizhub 162 Service Manual

Field Service Ver. 1.0 Apr. 2005

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
The installation site complies with
Installation the requirements specified in
1
site "PRECAUTIONS FOR INSTALLA-
TION" contained in GENERAL.
Paper meets product specifica-
2
tions.
Paper
3 Paper is damp.
4 Original is placed correctly.
5 Original is written in light pencil.
Original
Original is transparent (OHP film,
6
etc.).
7 Original Glass is dirty.
8 Original Glass is scratchy.
The PM parts relating to image for-
PM parts 9 mation have reached the end of
cleaning/replacement cycles.
Check Result
NO
NO
YES
NO
YES
YES
YES
YES
YES
17. Image quality problem
Action
• Change the installation site.
• Change paper for one that meets
specifications.
• Instruct user to use paper that
meets specifications and is rec-
ommended.
• Change paper for one that is dry.
Then, instruct user to use paper
that meets specifications and in
how to store paper.
• Reposition original.
• Instruct user in how to place orig-
inal correctly.
• Change original.
• Instruct user to use original with
appropriate image density.
• Change original.
• Instruct user to use originals that
meet specifications.
• Clean Original Glass.
• Change Original Glass.
• Clean PM parts.
• Change PM parts.
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