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Table 5-28. Print Quality Anomalies (Continued)
Symptom Possible Cause Part Name Check Item Remedy
Blank print Poor development Imaging
cartridge
Check whether the
toner cartridge is
installed properly.
Reinstall the toner
cartridge.
PWB-F board — Replace the PWB-F
board.
Improper charging PWB-F board — Replace the PWB-F
board.
Poor image
transfer
Image transfer
unit
Check the surface of
the image transfer unit.
Replace the image
transfer unit.
PWB-F board — Replace the PWB-F
board.
Improper print
density setting
— — Adjust the print density
in SelecType.
Defective optical
unit
Optical unit — Replace the optical unit.
Black print Improper charging Photoconduc-
tor unit
— Replace the
photoconductor unit.
PWB-F board — Replace the PWB-F
board.
Poor development Toner cartridge — Replace the toner
cartridge.
PWB-F board Replace the PWB-F
board.
Improper print
density setting
— — Adjust the print density
in SelecType
Defective optical
unit
Optical unit — Replace the optical unit.
White/black lines and
bands.
Improper charging Photoconduc-
tor unit
— Replace the imaging
cartridge.
Poor development PWB-F board — Replace the PWB-F
board.
Toner cartridge — Replace the toner
cartridge.
Dirt on the fusing
roller
Fusing roller — Clean the fusing roller.
Troubleshooting EPL-5500 Service Manual
5-18 Rev. B