Question about Ricoh Office Equipment & Supplies
990 A Waste Tank Full Sensor Defective
The waste ink tank full sensor (a
photosensor) on the corner of
the waste tank is not operating.
• Waste ink tank sensor on the corner of
the ink waste tank is defective.
• Replace the waste ink tank.
Posted on Jul 30, 2010
How to fix error 990 and what causes it
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Posted on Apr 23, 2018
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Posted on Jan 02, 2017
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