06/2014
3-10
WC 5022/5024
3.1.4 Image Quality Troubleshooting
Version 1.0
Image Quality Troubleshooting
IQ11 Repeating Bands,Streaks,Spots,and Smears RAP
Black lines or blank areas running along the paper in h.orizontal direction.
Procedure
Check the operating parts of the IIT Carriage for foreign substances and distortion. No distor-
tion or foreign substances are found in the operating parts of the carriage.
YN
Remove the foreign substances. If the Pulley, Shaft, IIT Carriage Belt (PL 1.3) (REP
1.3.2), etc. is deformed, replace it.
Remove the Drum Cartridge (PL 8.1) (REP 8.1.1) and reinstall it. Turn the power OFF then ON
and print. The problem reoccurs.
YN
End
Install the new Drum Cartridge (PL 8.1) (REP 8.1.1) securely. Turn the power OFF then ON
and print. The problem reoccurs.
YN
End
Check the surface of the BTR for contamination and distortion. The surface of the BTR is
clean and there is no distortion.
YN
Clean the BTR. If there is distortion, replace the BTR Roll (PL 6.1) (REP 4.1.1).
Check the pitch of the black lines or blank areas. The pitch of the black lines is approx. 78
mm (Heat Roll circumference).
YN
Clean the Heat Roll. If there is difficulty in removing the contamination, replace the Fusing
Unit (PL 7.1) (REP 7.1.1).
Replace the ROS Assembly (PL 2.1) (REP 2.1.1), followed by the ESS/MCU PWB (PL 18.3)
(REP 18.3.2).
IQ12 Mottle RAP
A phenomenon where an uneven density is occurring in the high density patch image.
Procedure
Check the paper type. Paper used is within specifications.
YN
Use paper within specifications.
Use paper from a freshly opened packet. The problem reoccurs.
YN
End
Remove the Drum Cartridge (PL 8.1) (REP 8.1.1) and reinstall it. Turn the power OFF then ON
and print. The problem reoccurs.
YN
End
Install the new Drum Cartridge (PL 8.1) (REP 8.1.1) securely. Turn the power OFF then ON
and print. The problem reoccurs.
YN
End
Check the surface of the BTR for contamination and distortion. The surface of the BTR is
clean and there is no distortion.
YN
Clean the BTR. If there is distortion, replace the BTR Roll (PL 6.1) (REP 4.1.1).
Remove the HVPS and reinstall it. Turn the power OFF then ON and print. The problem
reoccurs.
YN
End
Replace the ESS/MCU PWB (PL 18.3) (REP 18.3.2).