Olivetti PF-P09, Service Manual

Page: 387 / 457

22. IMAGE QUALITY PROBLEM Field Service Ver. 1.1 May 2011
344
TROUBLESHOOTING
22. IMAGE QUALITY PROBLEM
22.1 How to identify problematic part
• This chapter is divided into two parts: “Initial check items” and “Troubleshooting proce-
dure by a particular image quality problem.”
• When an image quality problem occurs, first go through the “Initial check items” and, if
the cause is yet to be identified, go to “Troubleshooting procedure by a particular image
quality problem.”
22.1.1 Initial check items
A. Initial check items 1
• Let the machine produce a test print and determine whether the image problem is attrib-
utable to the scanner or printer system.
• Evaluation procedure
B. Initial check items 3
• If the printer is responsible for the image problem, let the machine produce a test print
and determine whether the image problem occurs in a specific single color or four colors
• Evaluation procedure
Action Result Cause Next step
From [SERVICE MODE], select [PS/PCL]
o
[PRINT
MENU]
o
[GRADATION], and produce a test print. Is
image problem evident?
YES Printer Initial check items 2
NO Scanner P.345
Action Result Cause Next step
From [SERVICE MODE], select [PS/PCL]
o
[PRINT
MENU]
o
[GRADATION], and produce a test print. Is
image problem evident in each of all four colors?
YES Printer,
4 colors
P.368
NO Printer,
single color
P.356
d-Color MF2400