Question about Ricoh Aficio AP3800C Laser Printer
ERR (990) or ERR (999) are both error messages which are displayed
when a sensor does not work normally due to dirtiness. For example,
either may be caused by a dirty maintenance unit or clogged ink
nozzles. It may be possible to resolve the issue by cleaning the device
as described below
To clean your device, follow these steps.
Take care not to snag the sleeves of your clothing on the cord (1). Do not touch the feed belt (2).
Never use tissues because it can contaminate the maintenance unit with loose fibers.
Posted on Dec 27, 2008
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Posted on Jan 02, 2017
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