Riso MH 9350, User Manual

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Chapter 11 Troubleshooting
195
11
A portion of the image is
missing on printed papers.
Check if the glass platen is
stained. Wipe the glass platen with a soft cloth, etc.
(
A
176 “Maintenance”)
Check if any foreign objects
are adhered to the master. Pull out the print drum (cylinder) and check if any for-
eign object adheres to the master. If there is a for-
eign object, remove it.
If a foreign object exists between the master and the
print drum (cylinder), remove the master, and elimi-
nate the foreign object. Then, set the print drum (cyl-
inder) in place and perform the master making
process again.
Check if the paper size that
was placed on the paper
feed tray for master making
is smaller than the size of the
original. The size of the master to be made is determined
according to the size of the paper that is placed on
the paper feed tray.
Set the same size of paper on the paper feed tray as
the original, and then perform the master making
process.
Part of the print output by
print drum (cylinder) 1 is
missing. Check if an A4 / Letter drum
is installed as print drum (cyl-
inder) 1. The area that exceeds the maximum printing area of
the print drum (cylinder) will not be printed. In partic-
ular, if [Rotate] is set, the original will be inverted and
cause unintended results. To print an original that is
larger than A4
R
, replace the print drum (cylinder)
with an A3 drum.
Blank lines are found on
printed papers. Check if the thermal print
head of the master making
unit or the scanner glass of
the optional auto document
feeder is stained. Wipe the thermal print head or scanner glass with a
soft cloth, etc.
(
A
176 “Maintenance”)
Lines are found on printed
papers. Check if the scanner glass of
the optional auto document
feeder is stained. Wipe the scanner glass with a soft cloth, etc.
(
A
176 “Maintenance”)
The overall background of
the printed papers is stained. Check if colored paper, such
as newspaper, is used as the
original. Lighten the contrast in [Contrast] (
A
56) and perform
master making again.
Check if the glass platen is
stained. Wipe the glass platen with a soft cloth, etc.
(
A
176 “Maintenance”)
Problem Point to check Action