TROUBLESHOOTING GUIDE
17 January, 2003
4-44
Can the
problem be
duplicated?
Make a test print
from IPU in SP4-417
by selecting related
colour.
Check connection
between the IPU/
Controller, or
replace the IPU.
Check the scanner
section (exposure
glass, mirrors,
scanner movement,
etc.)
Yes
No
Can the
problem be
duplicated?
Yes
Check the
connection between
the SBU/IPU or
replace the SBU.
No
Specify the colour
that caused the
image problem.
Check the image
processing area of
the colour specified
in the previous step
!
Faint image (K)
Check the image transfer unit position lever.
!
Cyan/Magenta jitter
Check if the registration roller speed is suitable for the type of paper used.
!
Toner blasting
Check which colour is blasting and adjust the toner limit or transfer bias.
!
Image density change
Check when the problem is reported and follow the necessary steps.
!
Dirty Background
Check in which condition the problem is reported, and follow the required
procedure.
!
Colour vertical bands/lines/dirty background
Check the OPC drum and/or development unit.
!
Colour shift
Check the level of the colour shift and follow the troubleshooting guide if
required.
!
Colour lines/bands/dirty background
When the PCU/development unit is close to its life end, the developer or
the cleaning blade of the PCU wears out, causing vertical colour lines,
bands, or dirty background. Check the related colour unit and replace it if
necessary.
Considerable Symptom
A
B
G080T913.WMF