error code 11 : 11. trailing cable.

[jolo2021]

We had a Designjet 500 given to us. The previous owner told us that the motherboard was bad and that they had tried fixing it but the motherboard was a non serviceable item. We located a motherboard online and i have replaced it. Numbers match on motherboard.  When I power it up it gives me the 11:11 code for trailing cable.  I have gone through and reseated cable. The redline on the carriage was covered by the clip and I have reset that alignment to match service manual. The electronics module has a tag on it that is marked as c7779-60013. That number relates to a 24" model. Are they interchangable? I can't get past the error code on start-up, is there a way to continue past it? Maybe a calibration or something? Any thoghts or direction would be appreciated.

Thank You

[D Hook]

Don't know of any way to get past the 11:11 error code.   You'll probably need to remove the cables from the sockets on the board and closely examine the ends for any damage.  They're a little tricky to seat without folding back the foil ends.  Did you disconnect the trailing cable from the carriage also?  If so, I'd look there first since the sockets sit at a slight angle and are notorious for getting damaged when seating the cable.  New trailing cables for that printer are pretty cheap on Ebay and not difficult to replace.  

Not sure if the modules are interchangeable.  Hopefully someone else comes along that can answer that.