Dell C5765DN MFP Color Laser Printer - Manual (Page 520)

22 Problem Solving
520
Black or colored
lines are printed.
The drum cartridge has
deteriorated or is damaged.
Replace the drum cartridge with a new one.
Refer to "Replacing Drum Cartridges C, M,
Y, or K" (P.223).
The machine interior (laser
scanners) is dirty.
Clean the machine interior.
Refer to "Cleaning the Interior (Laser
Scanners)" (P.240).
The constant velocity
transport glass on the
document feeder is dirty.
Clean the constant velocity transport glass.
Refer to "Cleaning the White Chute and
Constant Velocity Transport Glass" (P.246).
Dirt appears at
equal intervals.
Paper feed
direction
The paper path is dirty. Print a few pages to remove the dirt.
The drum cartridge has
deteriorated or is damaged.
Replace the drum cartridge with a new one.
Refer to "Replacing Drum Cartridges C, M,
Y, or K" (P.223).
White dots
appear in black
filled areas.
The paper is unsuitable. Load suitable paper.
Refer to "Loading Paper" (P.207).
The drum cartridge has
deteriorated or is damaged.
Replace the drum cartridge with a new one.
Refer to "Replacing Drum Cartridges C, M,
Y, or K" (P.223).
Printed toner
smudges when
rubbed with your
finger.
Toner is not
fused.
The paper is
soiled with toner.
The paper is damp. Replace the paper with new one.
Refer to "Loading Paper" (P.207).
The paper is unsuitable. Load suitable paper.
Refer to "Loading Paper" (P.207).
Symptom Cause Remedy