Print Quality Problems - Kyocera FS-9120DN Operating Manual

2. Print Quality Problems

As the following table shows, there are many possible causes of print quality problems, such as blank output. The troubleshooting
procedure for each type of problem is explained below. If you still cannot solve the problem, contact your Kyocera Mita dealer.
Printed Results
Completely blank printout
All-black printout
Dropouts, horizontal streaks, stray dots
Black or white vertical streaks
Table 4-2
Corrective Action
Check the toner container.
Open the printer front cover and check that the toner container is
correctly installed in the printer. See
on page 5-1 .
Check the main charger unit.
Open the printer front cover and check that the main charger unit is
correctly installed.
Clean the charger wire.
Open the printer front cover. Pull the cleaning knob slowly in and out
Toner Container Replacement on page 5-1
a few times. See
Refresh drum.
See the following procedures in the operator panel and try cleaning
the drum surface using the printer's built-in cleaning system.
1. Press the MENU key, and then press the
>Others.
2. Press the key , and then press the
>Service >.
3. Press the key, and then press the
And then press the ENTER key twice.
4. The message display shows Please wait, and then the drum
starts turning and stops after approx.3 minutes. The printer
reverts to Ready.
Clean the separator.
Open the printer left cover 1 and clean the separator with a cleaning
Toner Container Replacement on page 5-1
brush. See
Check the operator panel.
If the Toner low message is displayed and the ! ATTENTION
indicator is flashing, install a new toner kit. See
Replacement on page 5-1
.
Clean the charger wire.
Open the printer front cover. Pull the cleaning knob slowly in and out
Toner Container Replacement on page 5-1
a few times. See
CHAPTER 4 TROUBLESHOOTING
Toner Container Replacement
or key to display
or key to display
or key to display >>Drum.
Toner Container
(Continued on next page)
.
.
.
4-2