Xerox 8830 has error E7.01 Controller Communication problem

This error message comes when the printer is unable to communicate with the controller. According to the manual to rectify this problem you need to switch the printer and controller off and wait for a few seconds and turn the printer on first and then the controller. here is a link to the manual if you dont have it.

http://download.support.xerox.com/pub/docs/8830ds/userdocs/any-os/en/701p19710_8830_printer_opman.pdf

Error E7.01 is shown on Xerox 8330 if the controller board cannot communicate with the IOT(image output terminal).
In this case many a times the controller board needs to be replaced.In some cases Removing the connection cable from controller cable then reinserting cable again resets the copier and problem gets solved.But before replacing the controller board the controller board needs to be checked.Checking the controller board is not very easy.Its a technical procedure :----
E701 is reported when the controller is unable to communicate with the IOT(image output terminal).The following check might saves some further troubles. 
1.If the the controller communication error is shown is,connect a terminator to the SCSI port marked "HOST" 
2.Disconnect the IOT,power up the controller,press the reset switch on the controller board and allow reset cycle to complete,power down,reconnect,insert floppy firmware,power up.
3.Down grade to firmware 2.7
4.Check PSU +5V and +12V at the pcb.
5.Check HD drive present on the con-fig printout. 
6.Check reset switch if not stuck in on controller.
7.Check controller to IOT cable in good condition.If faulty or short then cable needs replacement.
8.Replaced the flash SIMMs 
And lastly if all the above fail to cure the fault then replaced the controller board.
Thanks. keep updated for any more query.you can rate this solution and show your appreciation.

Dear Craig,
Download the service manual from given link. It will solve your problem. http://www.nodevice.com/manual/newmans/8825_8830(smpc)pdf/get11493.html