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I believe this has something to do with waste toner?
Any help appreciated
Are you shore about this code.Maybe E990-000
E990 Error in the waste toner shutter
0000 When the output of the waste toner shutter opening and shutting detection
sensor doesn't become "H" when it WMUPR period after the sleep returns after
eight hours or more pass, the door opening and shutting is detected or main
power switch turns on.
- Check that the drum unit is properly installed
- Replace the waste toner shutter sensor
If it ain't broke, don't fix it
A picture is worth a thousand words
When the process unit black locking lever is locked or released, it in turn opens/closes a waste toner shutter mechanism, if this does not occur properly an E990 error code may occur.
Check the Cam Lead mechanism (on inside process frame) for any broken gears or a broken cam lead itself, item #24FC6-9403-000. (See attached image for parts location). FIGURE 513 PROCESS FRAME ASSEMBLY frame.JPG
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