Question about Brother MFC-8440 All-In-One Laser Printer

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When i turn on my brother mfc 8440 it is saying

When i turn on my brother mfc 8440 it is saying that there is machine error 7A ... can you solve this for me please

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Hi,

Brother printer error code ' 7a' occur in different forms and they are linked directly to errors caused due to calculations as detected by GPU, however, it is still doubtful what exactly cause these GPU errors in hardware and the errors in WU. Keep in mind that this error code could also suggest that the main PCB is broken.

Posted on Jun 08, 2011

  • Dennis
    Dennis Mar 11, 2012

    What is the PCB? I have a problem where my machine power-cycles when you try to scan or print something. The scan bar starts moving, or it starts printing, and then it suddenly power-cycles.

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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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3 Answers

Brother MFC-8440 Machine Error Code 7A - tried to print something and machine stopped, beeped and gave me this code. No resolution from Brother other than to have a tech come look at it. Any insight...


Hello thanks for using FixYa
Error code 7A occurs in different forms and they are linked directly to errors caused due to calculations as detected by GPU, however, it is still doubtful what exactly cause these GPU errors in hardware and the errors in WU. Keep in mind that this error code could also suggest that the main PCB is broken.

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.

I hope this solution will helpful 4 u
Please don't forget to click on Four thumbs which are given below if it is helpful
THANKS & Keep Using fixya

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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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I recently had this problem - tested fuser and all sensors.
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Brother laser mcf-8440/ machin error 7a


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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