Canon TR7500 Series Online Manual page 557

5200
Cause
Printer error has occurred.
What to Do
Turn off printer and unplug it.
After a while, plug in the printer again and turn it back on.
If this does not solve the problem, contact your nearest Canon service center to request a repair.
Important
• If you unplug the power cord, all the faxes stored in the printer's memory are deleted.
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