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Xerox 5665 Copier Questions & Answers
Network Controller is unavailable
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.
Fault code problem whit xerox 5665
This sounds like a fuser problem, underheat or over heat. On this machine also, it might be related to NVM, or NVM memory corruption. Sometimes the batteries on the Main Board, they just get old and die.
This can be a multiple problem on the machine.
This might require a Xerox service person to visit the machine.
Some ideas are: A bad heat sensor(Thermistor), very fragil and brittle.
A NVM might need to be reset, Over heat or underheat code in the diagnostice service mode. You need a service manual to find it.Very complicated to explain.
A full sump bottle can cause this, the machine enters a code in the NVM and will keep the machine from "Logicly turning on." Or a broken full sump bottle, sensor falls off or not in place will cause the machine to enter a error code in the NVM.
Good luck.
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