Question about Brother MFC-8820D Laser Flatbel Multi-Function Center (MFC 8820D, MFC8820D) Printer

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Brother MFC-8820D Machine Error A

This AIO printer gives Machine Error 7A. The code stands for: Main motor is not synchronized withe the reference clock". How can I repair it? what is the most likely problem? Is service manual available, at least pages related to this error? Thank you.

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  • w00w Jul 21, 2008

    Machine error 7A

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For the error code "7a" to be fixed permanently, you need to ensure that the main PCB is fine and is working in good condition.
If the error code is caused due to malfunctioning of the main motor, then you need to check the whole setup by connecting it with another motor.
In this case, make sure that there is no mechanical load present on the main board.
While fixing this error code, you will notice that the motor runs slowly initially and then picks up the speed later.


http://www.fixya.com/support/t5660619-7a_error

Posted on Sep 22, 2010

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The top hopper on the Brother8820D is not working. How can I fix it or take in for repair.

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A synchronized signal of the main motor cannot be detected.
Turn the power off and then back on again.
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Check the flat cable connection of the main
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2 Main motor failure Replace the main motor.
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Replace the low voltage power supply PCB ASSY.
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Thank you for posting to Fixya.com and it is my pleasure to guide you.

I have scanned through the appropriate sections of the

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http://www.fixya.com/support/t5660619-7a_error

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http://www.fixya.com/support/t5660619-7a_error

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For the error code "7a" to be fixed permanently, you need to ensure that the main PCB is fine and is working in good condition.
If the error code is caused due to malfunctioning of the main motor, then you need to check the whole setup by connecting it with another motor.
In this case, make sure that there is no mechanical load present on the main board.
While fixing this error code, you will notice that the motor runs slowly initially and then picks up the speed later.

http://www.fixya.com/support/t5660619-7a_error

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http://www.fixya.com/support/t5660619-7a_error

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For the error code "7a" to be fixed permanently, you need to ensure that the main PCB is fine and is working in good condition.
If the error code is caused due to malfunctioning of the main motor, then you need to check the whole setup by connecting it with another motor.
In this case, make sure that there is no mechanical load present on the main board.
While fixing this error code, you will notice that the motor runs slowly initially and then picks up the speed later.

http://www.fixya.com/support/t5660619-7a_error

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For the error code "7a" to be fixed permanently, you need to ensure that the main PCB is fine and is working in good condition.
If the error code is caused due to malfunctioning of the main motor, then you need to check the whole setup by connecting it with another motor.
In this case, make sure that there is no mechanical load present on the main board.
While fixing this error code, you will notice that the motor runs slowly initially and then picks up the speed later.

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