B710 B720 B730 User’s Guide > 105
White dots
appear in black
filled areas.
The paper used is not suitable. Load the correct type
of paper.
See pages 24 and 40.
The drum/toner cartridge is defective or damaged.
Replace with a new drum/toner cartridge.
See page 119.
Printed image
smudges when
rubbed with your
finger.
The toner is not
fixed on the
paper.
Paper is
smeared with
toner.
The paper loaded in the paper tray does not match
the paper type set on the control panel. Make sure
the paper loaded in the tray matches the type set
using the control panel.
The paper is damp. Replace with paper from a new
ream.
The paper used is not suitable. Load the correct type
of paper.
See pages 24 and 40.
The whole sheet
is printed black.
The drum/toner cartridge is defective or damaged.
Replace with a new drum/toner cartridge.
See page 119.
This may be due to breakdown of high voltage power.
Contact service.
Nothing is
printed.
The drum/toner cartridge is defective/damaged or
there is no more toner inside the cartridge. Replace
with a new drum/toner cartridge.
See page 119.
Spots of missing
text.
This may be due to breakdown of high voltage power.
Contact service.
The paper is damp. Replace with paper from a new
ream.
The paper used is not suitable. Load the correct type
of paper.
See pages 24 and 40.
Symptom
Reason/Action
