C552 with FS526; error Code C1144

[jacco77]

hello,
I have a C552 with FS526, the machine have a trouble code C1144, i have just change M17, PS11, FNS control board assy, but the code remain.
Thank.

[emujo]

not standing in front of one right now, but if I remember this code has to do with the white arms that eject in and out during stacking. If I'm correct (and I'm not sure) and it's not the motor or sensor or broken pin, take the arms off and try running w/o them. If no problem then you have to look at a working MFP to get an idea of how they are supposed to be mounted on the gear tracks. Emujo