Service manual

TROUBLESHOOTING GUIDE 1
SM 4-43 G130/G131
Trouble-
shooting
4.4 TROUBLESHOOTING GUIDE 1
4.4.1 IMAGE QUALITY
Work-flow
The following workflow shows the basic troubleshooting steps for the considerable
image quality problems on this product.
Start
Verification of problem
reported from users
Ask customer to
duplicate it.
No
Yes
Yes
Make a test pattern in
SP5-997.
Colour
related?
No
Yes
Troubleshoot using the service
manual or technical bulletin.
No
Troubleshoot depending on
the type of problem.
Can the problem be
duplicated?
Image Quality?
y Vertical white dotted lines
Check the transfer bias or paper condition.
y Vertical white lines on thick paper
Check the timing when the problem occurs.
y Dirty lines
Check the transfer belt cleaning section.
y Poor fusing / Fusing offset
Check the paper types selected in the
printer driver.
y Smeared image at trailing edge
Check the fusing unit speed.
y Crow marks
Check the humidity condition and adjust
the transfer bias if necessary.
Possible Symptoms
* 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
G130T501.WMF
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CÓPIA NÃO CONTROLADA