Ricoh C9020L Operating Instructions Manual page 212

4. Troubleshooting When Using the Printer Function
Problem
The image on the back side of
duplex copies has mottled
blank patches or is smudged.
4
White stripes appear on the
OHP.
Other printing problems
Problem
It takes a long time to
complete a print job.
70
Cause
Missing patches and
smudges are caused by
moisture leaking from the
paper.
Fragments of paper are stuck
to the OHP.
Cause
"Sleep mode" might be set.
Solution
• Do not install the machine in areas
that are susceptible to low
temperature.
• Use paper that has been stored
where temperature and humidity
conditions meet the limitations we
recommend. For details about the
paper storage conditions we
recommend, see "Paper Storage",
About This Machine
• Install the Optional anti-humidity
heater. For details about the anti-
humidity heater, contact your
service representative.
Use a dry cloth to wipe any paper
fragments off the back of the OHP.
Solution
The machine requires time to warm up if
it has been in "Sleep mode". In [System
Settings], under [Timer Settings], select
[Auto Off Timer], and then specify
"Sleep mode".
.