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5.4.2 Print Quality Anomalies
This section describes how to isolate possible causes of a print quality problem.
Table 5-12. Print Quality Anomalies
Symptom Possible Cause Part Name Check Item Remedy
Low image density
Poor
development
PWB-F board —
Replace the PWB-F
board.
Image transfer
problem
Image transfer
unit
Check to see if the
surface of image
transfer unit is
damaged.
Replace the image
transfer unit.
PWB-F board —
Replace the PWB-F
board.
Defective PC
drum
Photoconduc-
tor unit
—
Replace the
photoconductor unit.
Improper print
density setting
——
Adjust the print
density using the
printer settings.
Foggy background Poor develop-
ment
Toner
cartridge
—
Replace the toner
cartridge.
Improper
charging
Drum charge
—
Replace the PWB-F
board.
Check the wiring of
the PC drum charging
bias line.
Replace the
photoconductor unit.
Improper print
density setting
——
Adjust the print
density using the
printer settings.
Troubleshooting EPL-5500W Service Manual
5-8 Rev. A