Brother MFC 9880 error 71

Print Unable 71 means Polygon Mirror Failure on the Brother HL-4040, MFC-9840 and MFC-9440.
Pretty safe to say it means the same thing on the MFC-8880.

The Polygon Mirror is part of the Laser Unit, and its rpm isn't within specs.
The Laser Unit must be replaced.

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Error 71 on a MFC-9600 means there is a problem with the motor inside the printer.
You can try unplugging and waiting a few minutes, then plugging back in again.
If it is still coming up with the error, if its still under warranty Brother will replace/repair it for you, otherwise you will have to pay Brother for the repair cost.

Polygon motor does not synchronize with the reference clock

Thats up to you. request a repair cost and compair it to the cost for a new one. Your choice mfc 9700 is a good unit. Upgrade to a MFC 4100n its one of the best brothers makes. Hope this helps.

71 says the fuser unit is not installed, it means the fuser lamp is burned out, or the temp. sensors are bad. In either case the best repair is a new fuser which you'll find at www.precisionroller.com

any of the error 7X codes are to do with the fuser. Call an engineer

that code indicates that your laser unit has gone bad. no way to reset or repair without a tech replacing the laser unit itself.

razors

error 71 is a problem with the polygon motor which is in the laser unit. This error usually means that you would need the laser unit replaced.
I'd suggest calling out an engineer.

Error code 71 -- ( Polygon motor does not synchronize with the reference clock. ) What ever that means - hope that helps.