Question about Xerox Phaser 8550DX Laser Printer
Here's a link to the error codes, note the 8550 codes are on the right side. (See POST codes.)
16.4 is a soft error code, i.e. doesn't prevent your printer from starting up, but generates a printed report. "Control panel data path failure, bad data returned." See page 4 for instructions recommended in this case.
You can access a remote dignostic tool from Xerox for your machine here., and here are support center instructions.
Here is the home support page for your model.
There may be firmware updates available for your printer that could help to correct some issues.
I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
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Posted on Jul 24, 2009
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Posted on Jan 02, 2017
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