Ricoh G080, Руководство по обслуживанию, Страница: 165 / 419

17 January, 2003 TROUBLESHOOTING GUIDE
4-43
4.4 TROUBLESHOOTING GUIDE
4.4.1 IMAGE QUALITY
Work-flow
The following work-flow shows the basic troubleshooting steps for the considerable
image quality problems on this product.
(From previous page)
Start
Verification of
problem reported
from users
Can the
problem be
duplicated?
Ask customer to
duplicate it.
No
Image
Quality?
Yes
Copy or
Print?
Yes
Make copy in the
enlargement or
reduction mode.
Location of
the image
problem
shifted?
Copy
Problem is related
to the scanner
section.
Yes
Make a test pattern
in SP5-997.
Print
No
Make a test print
from SBU in SP4-
907 in each
colour.
Colour
related?
All colour?
No
Yes
Yes
Colour
missing
No
Yes
Troubleshoot
using the service
manual or
technical bulletin.
No
N o
! Vertical white dotted
lines
Check the transfer
bias or paper
condition.
! Vertical white lines on
thick paper
Check the timing when
the problem occurs.
! Dirty lines
Check the transfer belt
cleaning section.
! Poor fusing / Fusing
offset
Check the paper types
selected in the printer
driver.
! Smeared image at
trailing edge
Check the fusing unit
speed.
! Crow marks
Check the humidity
condition and adjust
the transfer bias if
necessary.
Possible Symptoms
Possible
Symptoms
! Colour shift
Check the level
of the colour shift
and follow the
troubleshooting
guide if required.
Check Points
!
Connection of flat
cable between the
controller and
laser optic
housing unit.
! Mirror position of
related colour
located in the
laser optic
housing unit.
! Controller or BCU
board defective
* Font problem
* Image data missing
Especially, problems
related to the above
symptoms and if no
problem is found on the
test pattern, it may be
related to the application
used or driver. Collect a
capture file for further
investigation (select
'Print to File' in the
driver).
No problem on pattern
A
B
Troubleshoot
depending on the type
of problem.
G080T912.WMF