Toshiba e-STUDIO 5540C Service Manual page 1088

Cause/Section Step
Developer unit 12
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
Check item
Is there any abnormality on the
driving gear in the developer unit?
Check the driving gear in the
developer unit.
Replace the driving gear if it is worn
out.
Remove any developer material from
the driving gear, and then reapply
grease.
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Measures