Epson AcuLaser C2900N Service Manual page 172

Chapter 1 Troubleshooting
FIP-1.P14 Banding/Horizontal band cross out
13
Possible causative parts
- ROS ASSY (PL4.1.1)
- DRUM CARTRIDGE (PL4.1.21)
- TRANSFER ASSY (PL6.1.7)
- PWBA HVPS (PL4.1.19)
Before commencing troubleshooting, check the paper transfer path. Make sure there is no foreign
materials on the transfer path, such as staples, paper clips, scraps of paper and so on.
Step
Checking the Print.
Checked by [Test-Print] - [Contamination check] in
1
diagnosis.
Is the image printed correctly?
Checking the paper.
2 Is the installed paper with a new and dry one?
or does the paper satisfy the specification?
Checking for foreign objects in the paper transfer path.
Remove any foreign objects in the paper transfer path
3
between the TRANSFER ASSY and the fuser unit.
Does the printout have Banding/Horizontal band cross out?
Checking the defective parts.
Print the [Pitch Configuration Chart] in [Chart Print] in
[Diagnosis] tab of [Tool Box].
4 When the vertical stripes of periodicity are observed, check
the defective parts by comparing the printed vertical stripes
with the Pitch Chart.
Are there any vertical stripes matching the chart?
Epson AcuLaser C2900N
13
Check
1 - 159
Remedy
Yes
Printing data is
incorrect, then
check the printing
Go to step 2
data which the
problem
generated.
Replace the paper
with a new and dry
one. or Change
Go to step 3.
the paper to the
one that satisfies
the specification.
Go to step 4. End of work.
Replace the
corresponding Go to step 5.
parts.
Revision B
No
Confidential