oliphaz Posted November 12, 2021 Report Share Posted November 12, 2021 Hello all, I have a 3411 w/ SI-2400 & SP-2300. The machine has been having ARCNET issues for awhile now, and has finally gotten to the point where it is impacting startup. I have isolated the issue to the AFC/Scanner Control PCB causing interference in the system, as all other ARCNET connections work without errors when the AFC/Scanner pcb fiber is not plugged in - when it is plugged in the whole system runs at ~%60 errors when running arcnet selfcheck. I have a spare S-4 so have swapped out all the scanner power supplies to rule out them out. I have also trimmed all fiber cables clean and square. Now I believe it has to be the PCB itself. The board in the machine is J390879-04, while the service manual calls for J391201. I also see there are several other versions J390879-(1 thru 4). I am wondering if all of these boards are interchangeable as I look for a replacement. Could there be anything else causing the ARCNET issues in the scanner unit outside of this PCB; like I said, the system only has trouble when this fiber is plugged in. Thank you! Quote Link to comment Share on other sites More sharing options...
TECNOR Posted November 12, 2021 Report Share Posted November 12, 2021 (edited) Probably your problem is a bad conexion of optical fiber. Edited November 12, 2021 by TECNOR Quote Link to comment Share on other sites More sharing options...
davidlam Posted November 12, 2021 Report Share Posted November 12, 2021 J390879-xx is the old vwesion / old part no. of J391201-xx and all are interchangeable。I saw you had already swapped out all the scanner power supplies.... you can swap the board also to see if error will go. I have this board spare / remaining ..after our S4 upgraded to HS- scanner. Lastly Noritsu had supply discontinued this J391201-xx already. Good Luck. Quote Link to comment Share on other sites More sharing options...
Minilab service Posted November 20, 2021 Report Share Posted November 20, 2021 Yes, J390879 and J391201 . From 1 to 4 are revision numbers. These boards also used on other scanners - S2, S3, or S4. Just after replacement need to run software upgrade from HD ( only for AFC/scanner control PCB ) and read backups ( for scanner and Auto Film Carrier ) . Do not think, that board is faulty. Check do you have 5V on the board ( on J/P9 pin 1 ) . Also clean ARCNET connectors. In most cases connector cleaning is enough. Remove ARCNET holders ( black and white ) . Then clean sensors well. Trim ends of ARCNET cables ( 90 degrees ) . The best to use special cutters ( for example Omron ) . Then assemble, connect back and test. Quote Link to comment Share on other sites More sharing options...
davidlam Posted November 26, 2021 Report Share Posted November 26, 2021 @oliphaz, what's up with your machine now ? did you find a solution ? Quote Link to comment Share on other sites More sharing options...
oliphaz Posted January 18 Author Report Share Posted January 18 I am sorry for the long delay in responding. I replaced boards, but in the end it was in fact the fiber cables. I purchased a proper fiber trimmer to get clean cuts and was able to get arcnet working 100%. They sure were finicky! Quote Link to comment Share on other sites More sharing options...
davidlam Posted January 19 Report Share Posted January 19 glad to hear your problem had been fixed and we learnt from your case. Good Day to all ! Quote Link to comment Share on other sites More sharing options...
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