Question about Xerox 5665 Copier

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Network Controller is unavailable

Xerox WorkCentre 5665 v1 Multifunction System in our organization does not boot up to 100%, maximum boot it goes up to 75% only and it displays teh Network Controller is unavailable message then the machine responds to shutdown. What seems to be the root cause of this problem please advice.

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  • Anonymous Mar 13, 2014

    xerox panel says network controller unavailable



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The network controller used on these machines has a 2 stage power supply. The 1st stage initialises at switch on and the 2nd stage at about 75% of the boot sequence, if the 2nd stage fails then you will get the "controller unavailable" message. The answer is to replace the internal power supply for the network controller.

Posted on Feb 02, 2009

  • Tareq Bin Mostaq Mostaq

    Where is 2nd power supply ? please tell me clearly.



Rick Kasper

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More than likely it has a bad ess hard drive.
Could be software corruption but I would think there is a much better chance of it being the hard drive.

Posted on Apr 30, 2008



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The problem is xerox - their network controllers are ****. Get a new machine. Best advice anyone could get. We just went through 3 brand new machines, xerox replaced the network controller on all 3 for a total of 6 or 7 network conrtollers - we had a 5150, 5150 and a 5638 we had techs, level 2 techs, and engineers dissect all machines. A tech just left and now the network controller is saying unavailable - the tech just replaced the power supply... yesterday.

Posted on Mar 11, 2011

  • vilo62 Sep 02, 2011

    I have 3 workcentre Xerox 5030 with no conectivity(sacn , print or fax). the units were installed in 2010, We have connectivity issues with the units and tech support has told as to reset the units. While it does help initially, it is only a temporary fix. Two out of three units are now out of service. when we called Xerox the told us that they will dispach field engineer for $375.00 per half hour, plus parts. However, we believe this product have a mayor electrical engineering poor design issue and it soud be treate as a product recall. The interface print/ scan/fax has a power supply with no ventilation system for protection which results in overheating and to add more to the problem they mounted the hard drive over the power supply, I never see such poor engineering design for office products
    I will stay away from Xerox from now on, these units should cover by a factory recall


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