Question about Lexmark Optra M412 Laser Printer

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Lexmark Optra M412

Display was not working properly and now it is diplaying a 939 service system board error.

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  • Anonymous Jan 06, 2009

    Display is very dim, same error code, and continuos beeps.

  • Anonymous Feb 12, 2009

    I turn on the Optra m412 and it says 939 Service System Board. This model doesn't even show up on Lexmark's web site.

  • zabrina liang May 11, 2010

    Can you verify the error number? I do not find a 939 error code in the knowledgebase

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  • 412 Answers

Error 939 means --
RIP Communications Lost 
Controller EngineCommunications Lost 
The controller board and the engine board cannot
communicate with one another.

Solution --
POR several times
Check each board
for secure ground.
Replace the assys
in the following
order
1. Controller Bd
2. Engine Board
3. Intterconnect
  Board

Posted on Mar 09, 2009

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