Ricoh Aficio Color 3006 Service Manual page 282

24 February, 1999 DRUM UNIT
NOTE: 1) After pulling out the drawer unit, pull out the drum unit (2 connectors)
and shield the drum unit from light with a black sheet or 5 (or more)
white sheets of paper.
2) If the drawer unit is left out, the drum is exposed to light. This may
cause optical fatigue, resulting in image anomalies (see
"Troubleshooting – Drum Light Fatigue"). Therefore after pulling out the
drawer unit, remove the drum unit (2 connectors) and cover it with a
black sheet or 5 (or more) white sheets of paper.
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