Troubleshooting Image Quality Problems; Image Quality Problems; Problem 1: White Spots - Ricoh Pro C900 Replacement Manual

3. TROUBLESHOOTING IMAGE QUALITY
PROBLEMS
This section describes some common image quality problems and tells you what to
do about them.
Paper Feed Direction
Before you begin this section, note that the dark arrow in each illustration indicates
the direction of paper feed.

3.1 IMAGE QUALITY PROBLEMS

3.1.1 PROBLEM 1: WHITE SPOTS

Step 1 Print three full-page A3 or DLT sheets in each color (cyan, yellow,
magenta, and black).
Step 2 If you can see these white spots, replace the drum unit.
Step 3 If unit replacement does not solve the problem, call for service.
White dots or small lines appear, spaced at 314 mm (12 in.)
intervals in the direction of paper feed.
CAUSE: The drum is stained.
NOTE: See the following page for an actual sample. The
sample image is not at 1:1 scale.
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